Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario

Objectives The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise. - Methods We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic s...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Pfaff, Johannes - 1983- [verfasserIn] Füssel, Bianka - 1989- [verfasserIn] Harlan, Marcial E. - 1988- [verfasserIn] Hubert, Alexander [verfasserIn] Bendszus, Martin [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Anmerkung:	Online veröffentlicht: 15. Juni 2021 Gesehen am 23.10.2023
Umfang:	9

Übergeordnetes Werk:	Enthalten in: European radiology - Berlin : Springer, 1991, 32(2022), 1, Seite 281-289
Übergeordnetes Werk:	volume:32 ; year:2022 ; number:1 ; pages:281-289 ; extent:9

Links:	Volltext Volltext

DOI / URN:	10.1007/s00330-021-08084-5

Katalog-ID:	1867275163

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245	1	0	\|a Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario \|c Johannes A.R. Pfaff, Bianka Füssel, Marcial E. Harlan, Alexander Hubert, Martin Bendszus
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520			\|a Objectives The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise. - Methods We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic stroke to a comprehensive stroke center (CSC) or to one of eight primary stroke centers (PSC). CTAs were classified into arterial or venous phases as well as into 1 of 5 phases (early arterial, peak arterial, equilibrium, peak venous, and late venous). - Results Overall, n = 871 CTAs (CSC: n = 431 (49.5%); PSC: n = 440 (50.5%)) were included in the final analysis. A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overall n = 13 (1.5%); CSC: n = 3/431 (0.7%); PCS: n = 10/440 (2.3%); p = 0.09). CTAs acquired in the CSC showed more often an early arterial contrast phase (CSC: n = 371 (86.1%); PSC: n = 153 (34.8%), p < 0.01). Equilibrium contrast phase, i.e., a slightly stronger arterial contrast with clear venous contrast filling, was more frequent in CTAs from the PSCs (CSC: n = 6 (1.4%); PSC: n = 47 (10.7%); p < 0.01). - Conclusions Despite different technical equipment and examination protocols, the overall number of CTAs with venous contrast was low and did not differ between the CSC and the PCSs. Differences between the further differentiated contrast phases indicate potential for further improvement of CTA acquisition protocols.
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matchkey_str	article:14321084:2022----::aibltoaqiiinhsocmuetmgahagorpyncticei
oclc_num	1425060349
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publishDate	2022
allfields	10.1007/s00330-021-08084-5 doi (DE-627)1867275163 (DE-599)KXP1867275163 (OCoLC)1425060349 DE-627 ger DE-627 rda eng Pfaff, Johannes 1983- verfasserin (DE-588)14226718X (DE-627)704185598 (DE-576)329375318 aut Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario Johannes A.R. Pfaff, Bianka Füssel, Marcial E. Harlan, Alexander Hubert, Martin Bendszus 2022 9 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Online veröffentlicht: 15. Juni 2021 Gesehen am 23.10.2023 Objectives The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise. - Methods We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic stroke to a comprehensive stroke center (CSC) or to one of eight primary stroke centers (PSC). CTAs were classified into arterial or venous phases as well as into 1 of 5 phases (early arterial, peak arterial, equilibrium, peak venous, and late venous). - Results Overall, n = 871 CTAs (CSC: n = 431 (49.5%); PSC: n = 440 (50.5%)) were included in the final analysis. A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overall n = 13 (1.5%); CSC: n = 3/431 (0.7%); PCS: n = 10/440 (2.3%); p = 0.09). CTAs acquired in the CSC showed more often an early arterial contrast phase (CSC: n = 371 (86.1%); PSC: n = 153 (34.8%), p < 0.01). Equilibrium contrast phase, i.e., a slightly stronger arterial contrast with clear venous contrast filling, was more frequent in CTAs from the PSCs (CSC: n = 6 (1.4%); PSC: n = 47 (10.7%); p < 0.01). - Conclusions Despite different technical equipment and examination protocols, the overall number of CTAs with venous contrast was low and did not differ between the CSC and the PCSs. Differences between the further differentiated contrast phases indicate potential for further improvement of CTA acquisition protocols. Füssel, Bianka 1989- verfasserin (DE-588)1301065862 (DE-627)1858834457 aut Harlan, Marcial E. 1988- verfasserin (DE-588)1306945003 (DE-627)1867276518 aut Hubert, Alexander verfasserin (DE-588)1097621650 (DE-627)85732795X (DE-576)468904948 aut Bendszus, Martin verfasserin (DE-588)1032676426 (DE-627)738634131 (DE-576)175567697 aut Enthalten in European radiology Berlin : Springer, 1991 32(2022), 1, Seite 281-289 Online-Ressource (DE-627)268757526 (DE-600)1472718-3 (DE-576)103868070 1432-1084 nnns volume:32 year:2022 number:1 pages:281-289 extent:9 https://doi.org/10.1007/s00330-021-08084-5 Verlag Resolving-System kostenfrei Volltext https://link.springer.com/10.1007/s00330-021-08084-5 Verlag kostenfrei Volltext GBV_USEFLAG_U GBV_ILN_2011 ISIL_DE-16 SYSFLAG_1 GBV_KXP GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 GBV_ILN_2013 GBV_ILN_2403 GBV_ILN_2013 ISIL_DE-16-250 GBV_ILN_2403 ISIL_DE-LFER AR 32 2022 1 281-289 9 2011 01 DE-16 4400829464 00 --%%-- --%%-- --%%-- --%%-- l01 02-11-23 2013 01 DE-16-250 4395671756 00 --%%-- --%%-- --%%-- --%%-- l01 23-10-23 2403 01 DE-LFER 4405878358 00 --%%-- --%%-- n --%%-- l01 13-11-23 2403 01 DE-LFER https://doi.org/10.1007/s00330-021-08084-5 2403 01 DE-LFER https://link.springer.com/10.1007/s00330-021-08084-5 2013 01 DE-16-250 00 s hd2022 2013 01 DE-16-250 01 s (DE-627)1410508463 wissenschaftlicher Artikel (Zeitschrift) 2013 01 DE-16-250 02 s per_5 2013 01 DE-16-250 03 s s_9 2013 01 DE-16-250 04 p (DE-627)1498361358 Pfaff, Johannes 2013 01 DE-16-250 04 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 04 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 04 s pos_1 2013 01 DE-16-250 05 p (DE-627)1858894638 Füssel, Bianka 2013 01 DE-16-250 05 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 05 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 05 s pos_2 2013 01 DE-16-250 06 p (DE-627)1867276836 Harlan, Marcial E. 2013 01 DE-16-250 06 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 06 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 06 s pos_3 2013 01 DE-16-250 07 p (DE-627)1538905442 Hubert, Alexander 2013 01 DE-16-250 07 k (DE-627)1416741399 Radiologische Universitätsklinik 2013 01 DE-16-250 07 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 07 s pos_4 2013 01 DE-16-250 08 p (DE-627)1450183360 Bendszus, Martin 2013 01 DE-16-250 08 k (DE-627)1416741267 Neurologische Universitätsklinik 2013 01 DE-16-250 08 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 08 s pos_5
spelling	10.1007/s00330-021-08084-5 doi (DE-627)1867275163 (DE-599)KXP1867275163 (OCoLC)1425060349 DE-627 ger DE-627 rda eng Pfaff, Johannes 1983- verfasserin (DE-588)14226718X (DE-627)704185598 (DE-576)329375318 aut Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario Johannes A.R. Pfaff, Bianka Füssel, Marcial E. Harlan, Alexander Hubert, Martin Bendszus 2022 9 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Online veröffentlicht: 15. Juni 2021 Gesehen am 23.10.2023 Objectives The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise. - Methods We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic stroke to a comprehensive stroke center (CSC) or to one of eight primary stroke centers (PSC). CTAs were classified into arterial or venous phases as well as into 1 of 5 phases (early arterial, peak arterial, equilibrium, peak venous, and late venous). - Results Overall, n = 871 CTAs (CSC: n = 431 (49.5%); PSC: n = 440 (50.5%)) were included in the final analysis. A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overall n = 13 (1.5%); CSC: n = 3/431 (0.7%); PCS: n = 10/440 (2.3%); p = 0.09). CTAs acquired in the CSC showed more often an early arterial contrast phase (CSC: n = 371 (86.1%); PSC: n = 153 (34.8%), p < 0.01). Equilibrium contrast phase, i.e., a slightly stronger arterial contrast with clear venous contrast filling, was more frequent in CTAs from the PSCs (CSC: n = 6 (1.4%); PSC: n = 47 (10.7%); p < 0.01). - Conclusions Despite different technical equipment and examination protocols, the overall number of CTAs with venous contrast was low and did not differ between the CSC and the PCSs. Differences between the further differentiated contrast phases indicate potential for further improvement of CTA acquisition protocols. Füssel, Bianka 1989- verfasserin (DE-588)1301065862 (DE-627)1858834457 aut Harlan, Marcial E. 1988- verfasserin (DE-588)1306945003 (DE-627)1867276518 aut Hubert, Alexander verfasserin (DE-588)1097621650 (DE-627)85732795X (DE-576)468904948 aut Bendszus, Martin verfasserin (DE-588)1032676426 (DE-627)738634131 (DE-576)175567697 aut Enthalten in European radiology Berlin : Springer, 1991 32(2022), 1, Seite 281-289 Online-Ressource (DE-627)268757526 (DE-600)1472718-3 (DE-576)103868070 1432-1084 nnns volume:32 year:2022 number:1 pages:281-289 extent:9 https://doi.org/10.1007/s00330-021-08084-5 Verlag Resolving-System kostenfrei Volltext https://link.springer.com/10.1007/s00330-021-08084-5 Verlag kostenfrei Volltext GBV_USEFLAG_U GBV_ILN_2011 ISIL_DE-16 SYSFLAG_1 GBV_KXP GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 GBV_ILN_2013 GBV_ILN_2403 GBV_ILN_2013 ISIL_DE-16-250 GBV_ILN_2403 ISIL_DE-LFER AR 32 2022 1 281-289 9 2011 01 DE-16 4400829464 00 --%%-- --%%-- --%%-- --%%-- l01 02-11-23 2013 01 DE-16-250 4395671756 00 --%%-- --%%-- --%%-- --%%-- l01 23-10-23 2403 01 DE-LFER 4405878358 00 --%%-- --%%-- n --%%-- l01 13-11-23 2403 01 DE-LFER https://doi.org/10.1007/s00330-021-08084-5 2403 01 DE-LFER https://link.springer.com/10.1007/s00330-021-08084-5 2013 01 DE-16-250 00 s hd2022 2013 01 DE-16-250 01 s (DE-627)1410508463 wissenschaftlicher Artikel (Zeitschrift) 2013 01 DE-16-250 02 s per_5 2013 01 DE-16-250 03 s s_9 2013 01 DE-16-250 04 p (DE-627)1498361358 Pfaff, Johannes 2013 01 DE-16-250 04 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 04 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 04 s pos_1 2013 01 DE-16-250 05 p (DE-627)1858894638 Füssel, Bianka 2013 01 DE-16-250 05 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 05 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 05 s pos_2 2013 01 DE-16-250 06 p (DE-627)1867276836 Harlan, Marcial E. 2013 01 DE-16-250 06 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 06 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 06 s pos_3 2013 01 DE-16-250 07 p (DE-627)1538905442 Hubert, Alexander 2013 01 DE-16-250 07 k (DE-627)1416741399 Radiologische Universitätsklinik 2013 01 DE-16-250 07 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 07 s pos_4 2013 01 DE-16-250 08 p (DE-627)1450183360 Bendszus, Martin 2013 01 DE-16-250 08 k (DE-627)1416741267 Neurologische Universitätsklinik 2013 01 DE-16-250 08 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 08 s pos_5
allfields_unstemmed	10.1007/s00330-021-08084-5 doi (DE-627)1867275163 (DE-599)KXP1867275163 (OCoLC)1425060349 DE-627 ger DE-627 rda eng Pfaff, Johannes 1983- verfasserin (DE-588)14226718X (DE-627)704185598 (DE-576)329375318 aut Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario Johannes A.R. Pfaff, Bianka Füssel, Marcial E. Harlan, Alexander Hubert, Martin Bendszus 2022 9 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Online veröffentlicht: 15. Juni 2021 Gesehen am 23.10.2023 Objectives The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise. - Methods We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic stroke to a comprehensive stroke center (CSC) or to one of eight primary stroke centers (PSC). CTAs were classified into arterial or venous phases as well as into 1 of 5 phases (early arterial, peak arterial, equilibrium, peak venous, and late venous). - Results Overall, n = 871 CTAs (CSC: n = 431 (49.5%); PSC: n = 440 (50.5%)) were included in the final analysis. A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overall n = 13 (1.5%); CSC: n = 3/431 (0.7%); PCS: n = 10/440 (2.3%); p = 0.09). CTAs acquired in the CSC showed more often an early arterial contrast phase (CSC: n = 371 (86.1%); PSC: n = 153 (34.8%), p < 0.01). Equilibrium contrast phase, i.e., a slightly stronger arterial contrast with clear venous contrast filling, was more frequent in CTAs from the PSCs (CSC: n = 6 (1.4%); PSC: n = 47 (10.7%); p < 0.01). - Conclusions Despite different technical equipment and examination protocols, the overall number of CTAs with venous contrast was low and did not differ between the CSC and the PCSs. Differences between the further differentiated contrast phases indicate potential for further improvement of CTA acquisition protocols. Füssel, Bianka 1989- verfasserin (DE-588)1301065862 (DE-627)1858834457 aut Harlan, Marcial E. 1988- verfasserin (DE-588)1306945003 (DE-627)1867276518 aut Hubert, Alexander verfasserin (DE-588)1097621650 (DE-627)85732795X (DE-576)468904948 aut Bendszus, Martin verfasserin (DE-588)1032676426 (DE-627)738634131 (DE-576)175567697 aut Enthalten in European radiology Berlin : Springer, 1991 32(2022), 1, Seite 281-289 Online-Ressource (DE-627)268757526 (DE-600)1472718-3 (DE-576)103868070 1432-1084 nnns volume:32 year:2022 number:1 pages:281-289 extent:9 https://doi.org/10.1007/s00330-021-08084-5 Verlag Resolving-System kostenfrei Volltext https://link.springer.com/10.1007/s00330-021-08084-5 Verlag kostenfrei Volltext GBV_USEFLAG_U GBV_ILN_2011 ISIL_DE-16 SYSFLAG_1 GBV_KXP GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 GBV_ILN_2013 GBV_ILN_2403 GBV_ILN_2013 ISIL_DE-16-250 GBV_ILN_2403 ISIL_DE-LFER AR 32 2022 1 281-289 9 2011 01 DE-16 4400829464 00 --%%-- --%%-- --%%-- --%%-- l01 02-11-23 2013 01 DE-16-250 4395671756 00 --%%-- --%%-- --%%-- --%%-- l01 23-10-23 2403 01 DE-LFER 4405878358 00 --%%-- --%%-- n --%%-- l01 13-11-23 2403 01 DE-LFER https://doi.org/10.1007/s00330-021-08084-5 2403 01 DE-LFER https://link.springer.com/10.1007/s00330-021-08084-5 2013 01 DE-16-250 00 s hd2022 2013 01 DE-16-250 01 s (DE-627)1410508463 wissenschaftlicher Artikel (Zeitschrift) 2013 01 DE-16-250 02 s per_5 2013 01 DE-16-250 03 s s_9 2013 01 DE-16-250 04 p (DE-627)1498361358 Pfaff, Johannes 2013 01 DE-16-250 04 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 04 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 04 s pos_1 2013 01 DE-16-250 05 p (DE-627)1858894638 Füssel, Bianka 2013 01 DE-16-250 05 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 05 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 05 s pos_2 2013 01 DE-16-250 06 p (DE-627)1867276836 Harlan, Marcial E. 2013 01 DE-16-250 06 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 06 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 06 s pos_3 2013 01 DE-16-250 07 p (DE-627)1538905442 Hubert, Alexander 2013 01 DE-16-250 07 k (DE-627)1416741399 Radiologische Universitätsklinik 2013 01 DE-16-250 07 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 07 s pos_4 2013 01 DE-16-250 08 p (DE-627)1450183360 Bendszus, Martin 2013 01 DE-16-250 08 k (DE-627)1416741267 Neurologische Universitätsklinik 2013 01 DE-16-250 08 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 08 s pos_5
allfieldsGer	10.1007/s00330-021-08084-5 doi (DE-627)1867275163 (DE-599)KXP1867275163 (OCoLC)1425060349 DE-627 ger DE-627 rda eng Pfaff, Johannes 1983- verfasserin (DE-588)14226718X (DE-627)704185598 (DE-576)329375318 aut Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario Johannes A.R. Pfaff, Bianka Füssel, Marcial E. Harlan, Alexander Hubert, Martin Bendszus 2022 9 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Online veröffentlicht: 15. Juni 2021 Gesehen am 23.10.2023 Objectives The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise. - Methods We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic stroke to a comprehensive stroke center (CSC) or to one of eight primary stroke centers (PSC). CTAs were classified into arterial or venous phases as well as into 1 of 5 phases (early arterial, peak arterial, equilibrium, peak venous, and late venous). - Results Overall, n = 871 CTAs (CSC: n = 431 (49.5%); PSC: n = 440 (50.5%)) were included in the final analysis. A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overall n = 13 (1.5%); CSC: n = 3/431 (0.7%); PCS: n = 10/440 (2.3%); p = 0.09). CTAs acquired in the CSC showed more often an early arterial contrast phase (CSC: n = 371 (86.1%); PSC: n = 153 (34.8%), p < 0.01). Equilibrium contrast phase, i.e., a slightly stronger arterial contrast with clear venous contrast filling, was more frequent in CTAs from the PSCs (CSC: n = 6 (1.4%); PSC: n = 47 (10.7%); p < 0.01). - Conclusions Despite different technical equipment and examination protocols, the overall number of CTAs with venous contrast was low and did not differ between the CSC and the PCSs. Differences between the further differentiated contrast phases indicate potential for further improvement of CTA acquisition protocols. Füssel, Bianka 1989- verfasserin (DE-588)1301065862 (DE-627)1858834457 aut Harlan, Marcial E. 1988- verfasserin (DE-588)1306945003 (DE-627)1867276518 aut Hubert, Alexander verfasserin (DE-588)1097621650 (DE-627)85732795X (DE-576)468904948 aut Bendszus, Martin verfasserin (DE-588)1032676426 (DE-627)738634131 (DE-576)175567697 aut Enthalten in European radiology Berlin : Springer, 1991 32(2022), 1, Seite 281-289 Online-Ressource (DE-627)268757526 (DE-600)1472718-3 (DE-576)103868070 1432-1084 nnns volume:32 year:2022 number:1 pages:281-289 extent:9 https://doi.org/10.1007/s00330-021-08084-5 Verlag Resolving-System kostenfrei Volltext https://link.springer.com/10.1007/s00330-021-08084-5 Verlag kostenfrei Volltext GBV_USEFLAG_U GBV_ILN_2011 ISIL_DE-16 SYSFLAG_1 GBV_KXP GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 GBV_ILN_2013 GBV_ILN_2403 GBV_ILN_2013 ISIL_DE-16-250 GBV_ILN_2403 ISIL_DE-LFER AR 32 2022 1 281-289 9 2011 01 DE-16 4400829464 00 --%%-- --%%-- --%%-- --%%-- l01 02-11-23 2013 01 DE-16-250 4395671756 00 --%%-- --%%-- --%%-- --%%-- l01 23-10-23 2403 01 DE-LFER 4405878358 00 --%%-- --%%-- n --%%-- l01 13-11-23 2403 01 DE-LFER https://doi.org/10.1007/s00330-021-08084-5 2403 01 DE-LFER https://link.springer.com/10.1007/s00330-021-08084-5 2013 01 DE-16-250 00 s hd2022 2013 01 DE-16-250 01 s (DE-627)1410508463 wissenschaftlicher Artikel (Zeitschrift) 2013 01 DE-16-250 02 s per_5 2013 01 DE-16-250 03 s s_9 2013 01 DE-16-250 04 p (DE-627)1498361358 Pfaff, Johannes 2013 01 DE-16-250 04 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 04 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 04 s pos_1 2013 01 DE-16-250 05 p (DE-627)1858894638 Füssel, Bianka 2013 01 DE-16-250 05 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 05 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 05 s pos_2 2013 01 DE-16-250 06 p (DE-627)1867276836 Harlan, Marcial E. 2013 01 DE-16-250 06 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 06 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 06 s pos_3 2013 01 DE-16-250 07 p (DE-627)1538905442 Hubert, Alexander 2013 01 DE-16-250 07 k (DE-627)1416741399 Radiologische Universitätsklinik 2013 01 DE-16-250 07 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 07 s pos_4 2013 01 DE-16-250 08 p (DE-627)1450183360 Bendszus, Martin 2013 01 DE-16-250 08 k (DE-627)1416741267 Neurologische Universitätsklinik 2013 01 DE-16-250 08 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 08 s pos_5
allfieldsSound	10.1007/s00330-021-08084-5 doi (DE-627)1867275163 (DE-599)KXP1867275163 (OCoLC)1425060349 DE-627 ger DE-627 rda eng Pfaff, Johannes 1983- verfasserin (DE-588)14226718X (DE-627)704185598 (DE-576)329375318 aut Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario Johannes A.R. Pfaff, Bianka Füssel, Marcial E. Harlan, Alexander Hubert, Martin Bendszus 2022 9 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Online veröffentlicht: 15. Juni 2021 Gesehen am 23.10.2023 Objectives The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise. - Methods We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic stroke to a comprehensive stroke center (CSC) or to one of eight primary stroke centers (PSC). CTAs were classified into arterial or venous phases as well as into 1 of 5 phases (early arterial, peak arterial, equilibrium, peak venous, and late venous). - Results Overall, n = 871 CTAs (CSC: n = 431 (49.5%); PSC: n = 440 (50.5%)) were included in the final analysis. A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overall n = 13 (1.5%); CSC: n = 3/431 (0.7%); PCS: n = 10/440 (2.3%); p = 0.09). CTAs acquired in the CSC showed more often an early arterial contrast phase (CSC: n = 371 (86.1%); PSC: n = 153 (34.8%), p < 0.01). Equilibrium contrast phase, i.e., a slightly stronger arterial contrast with clear venous contrast filling, was more frequent in CTAs from the PSCs (CSC: n = 6 (1.4%); PSC: n = 47 (10.7%); p < 0.01). - Conclusions Despite different technical equipment and examination protocols, the overall number of CTAs with venous contrast was low and did not differ between the CSC and the PCSs. Differences between the further differentiated contrast phases indicate potential for further improvement of CTA acquisition protocols. Füssel, Bianka 1989- verfasserin (DE-588)1301065862 (DE-627)1858834457 aut Harlan, Marcial E. 1988- verfasserin (DE-588)1306945003 (DE-627)1867276518 aut Hubert, Alexander verfasserin (DE-588)1097621650 (DE-627)85732795X (DE-576)468904948 aut Bendszus, Martin verfasserin (DE-588)1032676426 (DE-627)738634131 (DE-576)175567697 aut Enthalten in European radiology Berlin : Springer, 1991 32(2022), 1, Seite 281-289 Online-Ressource (DE-627)268757526 (DE-600)1472718-3 (DE-576)103868070 1432-1084 nnns volume:32 year:2022 number:1 pages:281-289 extent:9 https://doi.org/10.1007/s00330-021-08084-5 Verlag Resolving-System kostenfrei Volltext https://link.springer.com/10.1007/s00330-021-08084-5 Verlag kostenfrei Volltext GBV_USEFLAG_U GBV_ILN_2011 ISIL_DE-16 SYSFLAG_1 GBV_KXP GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 GBV_ILN_2013 GBV_ILN_2403 GBV_ILN_2013 ISIL_DE-16-250 GBV_ILN_2403 ISIL_DE-LFER AR 32 2022 1 281-289 9 2011 01 DE-16 4400829464 00 --%%-- --%%-- --%%-- --%%-- l01 02-11-23 2013 01 DE-16-250 4395671756 00 --%%-- --%%-- --%%-- --%%-- l01 23-10-23 2403 01 DE-LFER 4405878358 00 --%%-- --%%-- n --%%-- l01 13-11-23 2403 01 DE-LFER https://doi.org/10.1007/s00330-021-08084-5 2403 01 DE-LFER https://link.springer.com/10.1007/s00330-021-08084-5 2013 01 DE-16-250 00 s hd2022 2013 01 DE-16-250 01 s (DE-627)1410508463 wissenschaftlicher Artikel (Zeitschrift) 2013 01 DE-16-250 02 s per_5 2013 01 DE-16-250 03 s s_9 2013 01 DE-16-250 04 p (DE-627)1498361358 Pfaff, Johannes 2013 01 DE-16-250 04 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 04 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 04 s pos_1 2013 01 DE-16-250 05 p (DE-627)1858894638 Füssel, Bianka 2013 01 DE-16-250 05 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 05 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 05 s pos_2 2013 01 DE-16-250 06 p (DE-627)1867276836 Harlan, Marcial E. 2013 01 DE-16-250 06 k (DE-627)1416466967 Medizinische Fakultät Heidelberg 2013 01 DE-16-250 06 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 06 s pos_3 2013 01 DE-16-250 07 p (DE-627)1538905442 Hubert, Alexander 2013 01 DE-16-250 07 k (DE-627)1416741399 Radiologische Universitätsklinik 2013 01 DE-16-250 07 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 07 s pos_4 2013 01 DE-16-250 08 p (DE-627)1450183360 Bendszus, Martin 2013 01 DE-16-250 08 k (DE-627)1416741267 Neurologische Universitätsklinik 2013 01 DE-16-250 08 s (DE-627)1410501914 Verfasser 2013 01 DE-16-250 08 s pos_5
language	English
source	Enthalten in European radiology 32(2022), 1, Seite 281-289 volume:32 year:2022 number:1 pages:281-289 extent:9
sourceStr	Enthalten in European radiology 32(2022), 1, Seite 281-289 volume:32 year:2022 number:1 pages:281-289 extent:9
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container_title	European radiology
authorswithroles_txt_mv	Pfaff, Johannes @@aut@@ Füssel, Bianka @@aut@@ Harlan, Marcial E. @@aut@@ Hubert, Alexander @@aut@@ Bendszus, Martin @@aut@@
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A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overall n = 13 (1.5%); CSC: n = 3/431 (0.7%); PCS: n = 10/440 (2.3%); p = 0.09). CTAs acquired in the CSC showed more often an early arterial contrast phase (CSC: n = 371 (86.1%); PSC: n = 153 (34.8%), p < 0.01). Equilibrium contrast phase, i.e., a slightly stronger arterial contrast with clear venous contrast filling, was more frequent in CTAs from the PSCs (CSC: n = 6 (1.4%); PSC: n = 47 (10.7%); p < 0.01). - Conclusions Despite different technical equipment and examination protocols, the overall number of CTAs with venous contrast was low and did not differ between the CSC and the PCSs. 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title	Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario
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title_full	Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario Johannes A.R. Pfaff, Bianka Füssel, Marcial E. Harlan, Alexander Hubert, Martin Bendszus
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title_sort	variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario
title_auth	Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario
abstract	Objectives The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise. - Methods We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic stroke to a comprehensive stroke center (CSC) or to one of eight primary stroke centers (PSC). CTAs were classified into arterial or venous phases as well as into 1 of 5 phases (early arterial, peak arterial, equilibrium, peak venous, and late venous). - Results Overall, n = 871 CTAs (CSC: n = 431 (49.5%); PSC: n = 440 (50.5%)) were included in the final analysis. A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overall n = 13 (1.5%); CSC: n = 3/431 (0.7%); PCS: n = 10/440 (2.3%); p = 0.09). CTAs acquired in the CSC showed more often an early arterial contrast phase (CSC: n = 371 (86.1%); PSC: n = 153 (34.8%), p < 0.01). Equilibrium contrast phase, i.e., a slightly stronger arterial contrast with clear venous contrast filling, was more frequent in CTAs from the PSCs (CSC: n = 6 (1.4%); PSC: n = 47 (10.7%); p < 0.01). - Conclusions Despite different technical equipment and examination protocols, the overall number of CTAs with venous contrast was low and did not differ between the CSC and the PCSs. Differences between the further differentiated contrast phases indicate potential for further improvement of CTA acquisition protocols. Online veröffentlicht: 15. Juni 2021 Gesehen am 23.10.2023
abstractGer	Objectives The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise. - Methods We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic stroke to a comprehensive stroke center (CSC) or to one of eight primary stroke centers (PSC). CTAs were classified into arterial or venous phases as well as into 1 of 5 phases (early arterial, peak arterial, equilibrium, peak venous, and late venous). - Results Overall, n = 871 CTAs (CSC: n = 431 (49.5%); PSC: n = 440 (50.5%)) were included in the final analysis. A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overall n = 13 (1.5%); CSC: n = 3/431 (0.7%); PCS: n = 10/440 (2.3%); p = 0.09). CTAs acquired in the CSC showed more often an early arterial contrast phase (CSC: n = 371 (86.1%); PSC: n = 153 (34.8%), p < 0.01). Equilibrium contrast phase, i.e., a slightly stronger arterial contrast with clear venous contrast filling, was more frequent in CTAs from the PSCs (CSC: n = 6 (1.4%); PSC: n = 47 (10.7%); p < 0.01). - Conclusions Despite different technical equipment and examination protocols, the overall number of CTAs with venous contrast was low and did not differ between the CSC and the PCSs. Differences between the further differentiated contrast phases indicate potential for further improvement of CTA acquisition protocols. Online veröffentlicht: 15. Juni 2021 Gesehen am 23.10.2023
abstract_unstemmed	Objectives The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise. - Methods We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic stroke to a comprehensive stroke center (CSC) or to one of eight primary stroke centers (PSC). CTAs were classified into arterial or venous phases as well as into 1 of 5 phases (early arterial, peak arterial, equilibrium, peak venous, and late venous). - Results Overall, n = 871 CTAs (CSC: n = 431 (49.5%); PSC: n = 440 (50.5%)) were included in the final analysis. A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overall n = 13 (1.5%); CSC: n = 3/431 (0.7%); PCS: n = 10/440 (2.3%); p = 0.09). CTAs acquired in the CSC showed more often an early arterial contrast phase (CSC: n = 371 (86.1%); PSC: n = 153 (34.8%), p < 0.01). Equilibrium contrast phase, i.e., a slightly stronger arterial contrast with clear venous contrast filling, was more frequent in CTAs from the PSCs (CSC: n = 6 (1.4%); PSC: n = 47 (10.7%); p < 0.01). - Conclusions Despite different technical equipment and examination protocols, the overall number of CTAs with venous contrast was low and did not differ between the CSC and the PCSs. Differences between the further differentiated contrast phases indicate potential for further improvement of CTA acquisition protocols. Online veröffentlicht: 15. Juni 2021 Gesehen am 23.10.2023
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title_short	Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario
url	https://doi.org/10.1007/s00330-021-08084-5 https://link.springer.com/10.1007/s00330-021-08084-5
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Pfaff, Bianka Füssel, Marcial E. Harlan, Alexander Hubert, Martin Bendszus</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2022</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">9</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">Online veröffentlicht: 15. Juni 2021</subfield></datafield><datafield tag="500" ind1=" " ind2=" "><subfield code="a">Gesehen am 23.10.2023</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Objectives The informative value of computed tomography angiography (CTA) depends on the contrast phase in the vessels which may differ depending on the level of local expertise. - Methods We retrospectively measured vessel contrast density from CTA scans in patients presenting with acute ischemic stroke to a comprehensive stroke center (CSC) or to one of eight primary stroke centers (PSC). CTAs were classified into arterial or venous phases as well as into 1 of 5 phases (early arterial, peak arterial, equilibrium, peak venous, and late venous). - Results Overall, n = 871 CTAs (CSC: n = 431 (49.5%); PSC: n = 440 (50.5%)) were included in the final analysis. A higher venous than arterial contrast density at the level of the circle of Willis was only rarely observed (overall n = 13 (1.5%); CSC: n = 3/431 (0.7%); PCS: n = 10/440 (2.3%); p = 0.09). CTAs acquired in the CSC showed more often an early arterial contrast phase (CSC: n = 371 (86.1%); PSC: n = 153 (34.8%), p < 0.01). Equilibrium contrast phase, i.e., a slightly stronger arterial contrast with clear venous contrast filling, was more frequent in CTAs from the PSCs (CSC: n = 6 (1.4%); PSC: n = 47 (10.7%); p < 0.01). - Conclusions Despite different technical equipment and examination protocols, the overall number of CTAs with venous contrast was low and did not differ between the CSC and the PCSs. Differences between the further differentiated contrast phases indicate potential for further improvement of CTA acquisition protocols.</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Füssel, Bianka</subfield><subfield code="d">1989-</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(DE-588)1301065862</subfield><subfield code="0">(DE-627)1858834457</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Harlan, Marcial E.</subfield><subfield code="d">1988-</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(DE-588)1306945003</subfield><subfield code="0">(DE-627)1867276518</subfield><subfield code="4">aut</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Hubert, Alexander</subfield><subfield code="e">verfasserin</subfield><subfield code="0">(DE-588)1097621650</subfield><subfield code="0">(DE-627)85732795X</subfield><subfield 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Variability of acquisition phase of computed tomography angiography in acute ischemic stroke in a real-world scenario

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