Detection of liver metastasis: is diffusion-weighted imaging needed in Gd-EOB-DTPA-enhanced MR imaging for evaluation of colorectal liver metastases?
Purpose We compared diagnostic ability for detecting hepatic metastases between gadolinium ethoxy benzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) on a 1.5-T system, and determined whether DWI is necessary in Gd-E...
Ausführliche Beschreibung
Autor*in: |
Tajima, Taku [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2012 |
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Anmerkung: |
© Japan Radiological Society 2012 |
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Übergeordnetes Werk: |
Enthalten in: Radiation medicine - Tokyo : Springer, 1999, 30(2012), 8 vom: 18. Juli, Seite 648-658 |
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Übergeordnetes Werk: |
volume:30 ; year:2012 ; number:8 ; day:18 ; month:07 ; pages:648-658 |
Links: |
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DOI / URN: |
10.1007/s11604-012-0105-4 |
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Katalog-ID: |
SPR021034060 |
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520 | |a Purpose We compared diagnostic ability for detecting hepatic metastases between gadolinium ethoxy benzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) on a 1.5-T system, and determined whether DWI is necessary in Gd-EOB-DTPA-enhanced MRI for diagnosing colorectal liver metastases. Materials and methods We assessed 29 consecutive prospectively enrolled patients with suspected metachronous colorectal liver metastases; all patients underwent surgery and had preoperative Gd-EOB-DTPA-enhanced MRI. Overall detection rate, sensitivity for detecting metastases and benign lesions, positive predictive value, and diagnostic accuracy (Az value) were compared among three image sets [unenhanced MRI (DWI set), Gd-EOB-DTPA-enhanced MRI excluding DWI (EOB set), and combined set]. Results Gd-EOB-DTPA-enhanced MRI yielded better overall detection rate (77.8–79.0 %) and sensitivity (87.1–89.4 %) for detecting metastases than the DWI set (55.9 % and 64.7 %, respectively) for one observer (P < 0.001). No statistically significant difference was seen between the EOB and combined sets, although several metastases were newly detected on additional DWI. Conclusions Gd-EOB-DTPA-enhanced MRI yielded a better overall detection rate and higher sensitivity for detecting metastases compared with unenhanced MRI. Additional DWI may be able to reduce oversight of lesions in Gd-EOB-DTPA-enhanced 1.5-T MRI for detecting colorectal liver metastases. | ||
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650 | 4 | |a Liver metastasis |7 (dpeaa)DE-He213 | |
700 | 1 | |a Akahane, Masaaki |4 aut | |
700 | 1 | |a Takao, Hidemasa |4 aut | |
700 | 1 | |a Akai, Hiroyuki |4 aut | |
700 | 1 | |a Kiryu, Shigeru |4 aut | |
700 | 1 | |a Imamura, Hiroshi |4 aut | |
700 | 1 | |a Watanabe, Yasushi |4 aut | |
700 | 1 | |a Kokudo, Norihiro |4 aut | |
700 | 1 | |a Ohtomo, Kuni |4 aut | |
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10.1007/s11604-012-0105-4 doi (DE-627)SPR021034060 (SPR)s11604-012-0105-4-e DE-627 ger DE-627 rakwb eng Tajima, Taku verfasserin aut Detection of liver metastasis: is diffusion-weighted imaging needed in Gd-EOB-DTPA-enhanced MR imaging for evaluation of colorectal liver metastases? 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Japan Radiological Society 2012 Purpose We compared diagnostic ability for detecting hepatic metastases between gadolinium ethoxy benzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) on a 1.5-T system, and determined whether DWI is necessary in Gd-EOB-DTPA-enhanced MRI for diagnosing colorectal liver metastases. Materials and methods We assessed 29 consecutive prospectively enrolled patients with suspected metachronous colorectal liver metastases; all patients underwent surgery and had preoperative Gd-EOB-DTPA-enhanced MRI. Overall detection rate, sensitivity for detecting metastases and benign lesions, positive predictive value, and diagnostic accuracy (Az value) were compared among three image sets [unenhanced MRI (DWI set), Gd-EOB-DTPA-enhanced MRI excluding DWI (EOB set), and combined set]. Results Gd-EOB-DTPA-enhanced MRI yielded better overall detection rate (77.8–79.0 %) and sensitivity (87.1–89.4 %) for detecting metastases than the DWI set (55.9 % and 64.7 %, respectively) for one observer (P < 0.001). No statistically significant difference was seen between the EOB and combined sets, although several metastases were newly detected on additional DWI. Conclusions Gd-EOB-DTPA-enhanced MRI yielded a better overall detection rate and higher sensitivity for detecting metastases compared with unenhanced MRI. Additional DWI may be able to reduce oversight of lesions in Gd-EOB-DTPA-enhanced 1.5-T MRI for detecting colorectal liver metastases. MRI (dpeaa)DE-He213 Gd-EOB-DTPA (dpeaa)DE-He213 DWI (dpeaa)DE-He213 Liver metastasis (dpeaa)DE-He213 Akahane, Masaaki aut Takao, Hidemasa aut Akai, Hiroyuki aut Kiryu, Shigeru aut Imamura, Hiroshi aut Watanabe, Yasushi aut Kokudo, Norihiro aut Ohtomo, Kuni aut Enthalten in Radiation medicine Tokyo : Springer, 1999 30(2012), 8 vom: 18. Juli, Seite 648-658 (DE-627)368312305 (DE-600)2117284-5 1862-5274 nnns volume:30 year:2012 number:8 day:18 month:07 pages:648-658 https://dx.doi.org/10.1007/s11604-012-0105-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA 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_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 30 2012 8 18 07 648-658 |
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10.1007/s11604-012-0105-4 doi (DE-627)SPR021034060 (SPR)s11604-012-0105-4-e DE-627 ger DE-627 rakwb eng Tajima, Taku verfasserin aut Detection of liver metastasis: is diffusion-weighted imaging needed in Gd-EOB-DTPA-enhanced MR imaging for evaluation of colorectal liver metastases? 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Japan Radiological Society 2012 Purpose We compared diagnostic ability for detecting hepatic metastases between gadolinium ethoxy benzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) on a 1.5-T system, and determined whether DWI is necessary in Gd-EOB-DTPA-enhanced MRI for diagnosing colorectal liver metastases. Materials and methods We assessed 29 consecutive prospectively enrolled patients with suspected metachronous colorectal liver metastases; all patients underwent surgery and had preoperative Gd-EOB-DTPA-enhanced MRI. Overall detection rate, sensitivity for detecting metastases and benign lesions, positive predictive value, and diagnostic accuracy (Az value) were compared among three image sets [unenhanced MRI (DWI set), Gd-EOB-DTPA-enhanced MRI excluding DWI (EOB set), and combined set]. Results Gd-EOB-DTPA-enhanced MRI yielded better overall detection rate (77.8–79.0 %) and sensitivity (87.1–89.4 %) for detecting metastases than the DWI set (55.9 % and 64.7 %, respectively) for one observer (P < 0.001). No statistically significant difference was seen between the EOB and combined sets, although several metastases were newly detected on additional DWI. Conclusions Gd-EOB-DTPA-enhanced MRI yielded a better overall detection rate and higher sensitivity for detecting metastases compared with unenhanced MRI. Additional DWI may be able to reduce oversight of lesions in Gd-EOB-DTPA-enhanced 1.5-T MRI for detecting colorectal liver metastases. MRI (dpeaa)DE-He213 Gd-EOB-DTPA (dpeaa)DE-He213 DWI (dpeaa)DE-He213 Liver metastasis (dpeaa)DE-He213 Akahane, Masaaki aut Takao, Hidemasa aut Akai, Hiroyuki aut Kiryu, Shigeru aut Imamura, Hiroshi aut Watanabe, Yasushi aut Kokudo, Norihiro aut Ohtomo, Kuni aut Enthalten in Radiation medicine Tokyo : Springer, 1999 30(2012), 8 vom: 18. Juli, Seite 648-658 (DE-627)368312305 (DE-600)2117284-5 1862-5274 nnns volume:30 year:2012 number:8 day:18 month:07 pages:648-658 https://dx.doi.org/10.1007/s11604-012-0105-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA 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_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 30 2012 8 18 07 648-658 |
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10.1007/s11604-012-0105-4 doi (DE-627)SPR021034060 (SPR)s11604-012-0105-4-e DE-627 ger DE-627 rakwb eng Tajima, Taku verfasserin aut Detection of liver metastasis: is diffusion-weighted imaging needed in Gd-EOB-DTPA-enhanced MR imaging for evaluation of colorectal liver metastases? 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Japan Radiological Society 2012 Purpose We compared diagnostic ability for detecting hepatic metastases between gadolinium ethoxy benzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) on a 1.5-T system, and determined whether DWI is necessary in Gd-EOB-DTPA-enhanced MRI for diagnosing colorectal liver metastases. Materials and methods We assessed 29 consecutive prospectively enrolled patients with suspected metachronous colorectal liver metastases; all patients underwent surgery and had preoperative Gd-EOB-DTPA-enhanced MRI. Overall detection rate, sensitivity for detecting metastases and benign lesions, positive predictive value, and diagnostic accuracy (Az value) were compared among three image sets [unenhanced MRI (DWI set), Gd-EOB-DTPA-enhanced MRI excluding DWI (EOB set), and combined set]. Results Gd-EOB-DTPA-enhanced MRI yielded better overall detection rate (77.8–79.0 %) and sensitivity (87.1–89.4 %) for detecting metastases than the DWI set (55.9 % and 64.7 %, respectively) for one observer (P < 0.001). No statistically significant difference was seen between the EOB and combined sets, although several metastases were newly detected on additional DWI. Conclusions Gd-EOB-DTPA-enhanced MRI yielded a better overall detection rate and higher sensitivity for detecting metastases compared with unenhanced MRI. Additional DWI may be able to reduce oversight of lesions in Gd-EOB-DTPA-enhanced 1.5-T MRI for detecting colorectal liver metastases. MRI (dpeaa)DE-He213 Gd-EOB-DTPA (dpeaa)DE-He213 DWI (dpeaa)DE-He213 Liver metastasis (dpeaa)DE-He213 Akahane, Masaaki aut Takao, Hidemasa aut Akai, Hiroyuki aut Kiryu, Shigeru aut Imamura, Hiroshi aut Watanabe, Yasushi aut Kokudo, Norihiro aut Ohtomo, Kuni aut Enthalten in Radiation medicine Tokyo : Springer, 1999 30(2012), 8 vom: 18. Juli, Seite 648-658 (DE-627)368312305 (DE-600)2117284-5 1862-5274 nnns volume:30 year:2012 number:8 day:18 month:07 pages:648-658 https://dx.doi.org/10.1007/s11604-012-0105-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA 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_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 30 2012 8 18 07 648-658 |
allfieldsGer |
10.1007/s11604-012-0105-4 doi (DE-627)SPR021034060 (SPR)s11604-012-0105-4-e DE-627 ger DE-627 rakwb eng Tajima, Taku verfasserin aut Detection of liver metastasis: is diffusion-weighted imaging needed in Gd-EOB-DTPA-enhanced MR imaging for evaluation of colorectal liver metastases? 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Japan Radiological Society 2012 Purpose We compared diagnostic ability for detecting hepatic metastases between gadolinium ethoxy benzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) on a 1.5-T system, and determined whether DWI is necessary in Gd-EOB-DTPA-enhanced MRI for diagnosing colorectal liver metastases. Materials and methods We assessed 29 consecutive prospectively enrolled patients with suspected metachronous colorectal liver metastases; all patients underwent surgery and had preoperative Gd-EOB-DTPA-enhanced MRI. Overall detection rate, sensitivity for detecting metastases and benign lesions, positive predictive value, and diagnostic accuracy (Az value) were compared among three image sets [unenhanced MRI (DWI set), Gd-EOB-DTPA-enhanced MRI excluding DWI (EOB set), and combined set]. Results Gd-EOB-DTPA-enhanced MRI yielded better overall detection rate (77.8–79.0 %) and sensitivity (87.1–89.4 %) for detecting metastases than the DWI set (55.9 % and 64.7 %, respectively) for one observer (P < 0.001). No statistically significant difference was seen between the EOB and combined sets, although several metastases were newly detected on additional DWI. Conclusions Gd-EOB-DTPA-enhanced MRI yielded a better overall detection rate and higher sensitivity for detecting metastases compared with unenhanced MRI. Additional DWI may be able to reduce oversight of lesions in Gd-EOB-DTPA-enhanced 1.5-T MRI for detecting colorectal liver metastases. MRI (dpeaa)DE-He213 Gd-EOB-DTPA (dpeaa)DE-He213 DWI (dpeaa)DE-He213 Liver metastasis (dpeaa)DE-He213 Akahane, Masaaki aut Takao, Hidemasa aut Akai, Hiroyuki aut Kiryu, Shigeru aut Imamura, Hiroshi aut Watanabe, Yasushi aut Kokudo, Norihiro aut Ohtomo, Kuni aut Enthalten in Radiation medicine Tokyo : Springer, 1999 30(2012), 8 vom: 18. Juli, Seite 648-658 (DE-627)368312305 (DE-600)2117284-5 1862-5274 nnns volume:30 year:2012 number:8 day:18 month:07 pages:648-658 https://dx.doi.org/10.1007/s11604-012-0105-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA 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_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 30 2012 8 18 07 648-658 |
allfieldsSound |
10.1007/s11604-012-0105-4 doi (DE-627)SPR021034060 (SPR)s11604-012-0105-4-e DE-627 ger DE-627 rakwb eng Tajima, Taku verfasserin aut Detection of liver metastasis: is diffusion-weighted imaging needed in Gd-EOB-DTPA-enhanced MR imaging for evaluation of colorectal liver metastases? 2012 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Japan Radiological Society 2012 Purpose We compared diagnostic ability for detecting hepatic metastases between gadolinium ethoxy benzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) on a 1.5-T system, and determined whether DWI is necessary in Gd-EOB-DTPA-enhanced MRI for diagnosing colorectal liver metastases. Materials and methods We assessed 29 consecutive prospectively enrolled patients with suspected metachronous colorectal liver metastases; all patients underwent surgery and had preoperative Gd-EOB-DTPA-enhanced MRI. Overall detection rate, sensitivity for detecting metastases and benign lesions, positive predictive value, and diagnostic accuracy (Az value) were compared among three image sets [unenhanced MRI (DWI set), Gd-EOB-DTPA-enhanced MRI excluding DWI (EOB set), and combined set]. Results Gd-EOB-DTPA-enhanced MRI yielded better overall detection rate (77.8–79.0 %) and sensitivity (87.1–89.4 %) for detecting metastases than the DWI set (55.9 % and 64.7 %, respectively) for one observer (P < 0.001). No statistically significant difference was seen between the EOB and combined sets, although several metastases were newly detected on additional DWI. Conclusions Gd-EOB-DTPA-enhanced MRI yielded a better overall detection rate and higher sensitivity for detecting metastases compared with unenhanced MRI. Additional DWI may be able to reduce oversight of lesions in Gd-EOB-DTPA-enhanced 1.5-T MRI for detecting colorectal liver metastases. MRI (dpeaa)DE-He213 Gd-EOB-DTPA (dpeaa)DE-He213 DWI (dpeaa)DE-He213 Liver metastasis (dpeaa)DE-He213 Akahane, Masaaki aut Takao, Hidemasa aut Akai, Hiroyuki aut Kiryu, Shigeru aut Imamura, Hiroshi aut Watanabe, Yasushi aut Kokudo, Norihiro aut Ohtomo, Kuni aut Enthalten in Radiation medicine Tokyo : Springer, 1999 30(2012), 8 vom: 18. Juli, Seite 648-658 (DE-627)368312305 (DE-600)2117284-5 1862-5274 nnns volume:30 year:2012 number:8 day:18 month:07 pages:648-658 https://dx.doi.org/10.1007/s11604-012-0105-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA 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_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 AR 30 2012 8 18 07 648-658 |
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Materials and methods We assessed 29 consecutive prospectively enrolled patients with suspected metachronous colorectal liver metastases; all patients underwent surgery and had preoperative Gd-EOB-DTPA-enhanced MRI. Overall detection rate, sensitivity for detecting metastases and benign lesions, positive predictive value, and diagnostic accuracy (Az value) were compared among three image sets [unenhanced MRI (DWI set), Gd-EOB-DTPA-enhanced MRI excluding DWI (EOB set), and combined set]. Results Gd-EOB-DTPA-enhanced MRI yielded better overall detection rate (77.8–79.0 %) and sensitivity (87.1–89.4 %) for detecting metastases than the DWI set (55.9 % and 64.7 %, respectively) for one observer (P < 0.001). No statistically significant difference was seen between the EOB and combined sets, although several metastases were newly detected on additional DWI. Conclusions Gd-EOB-DTPA-enhanced MRI yielded a better overall detection rate and higher sensitivity for detecting metastases compared with unenhanced MRI. 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Tajima, Taku |
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Detection of liver metastasis: is diffusion-weighted imaging needed in Gd-EOB-DTPA-enhanced MR imaging for evaluation of colorectal liver metastases? MRI (dpeaa)DE-He213 Gd-EOB-DTPA (dpeaa)DE-He213 DWI (dpeaa)DE-He213 Liver metastasis (dpeaa)DE-He213 |
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Detection of liver metastasis: is diffusion-weighted imaging needed in Gd-EOB-DTPA-enhanced MR imaging for evaluation of colorectal liver metastases? |
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Tajima, Taku Akahane, Masaaki Takao, Hidemasa Akai, Hiroyuki Kiryu, Shigeru Imamura, Hiroshi Watanabe, Yasushi Kokudo, Norihiro Ohtomo, Kuni |
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detection of liver metastasis: is diffusion-weighted imaging needed in gd-eob-dtpa-enhanced mr imaging for evaluation of colorectal liver metastases? |
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Detection of liver metastasis: is diffusion-weighted imaging needed in Gd-EOB-DTPA-enhanced MR imaging for evaluation of colorectal liver metastases? |
abstract |
Purpose We compared diagnostic ability for detecting hepatic metastases between gadolinium ethoxy benzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) on a 1.5-T system, and determined whether DWI is necessary in Gd-EOB-DTPA-enhanced MRI for diagnosing colorectal liver metastases. Materials and methods We assessed 29 consecutive prospectively enrolled patients with suspected metachronous colorectal liver metastases; all patients underwent surgery and had preoperative Gd-EOB-DTPA-enhanced MRI. Overall detection rate, sensitivity for detecting metastases and benign lesions, positive predictive value, and diagnostic accuracy (Az value) were compared among three image sets [unenhanced MRI (DWI set), Gd-EOB-DTPA-enhanced MRI excluding DWI (EOB set), and combined set]. Results Gd-EOB-DTPA-enhanced MRI yielded better overall detection rate (77.8–79.0 %) and sensitivity (87.1–89.4 %) for detecting metastases than the DWI set (55.9 % and 64.7 %, respectively) for one observer (P < 0.001). No statistically significant difference was seen between the EOB and combined sets, although several metastases were newly detected on additional DWI. Conclusions Gd-EOB-DTPA-enhanced MRI yielded a better overall detection rate and higher sensitivity for detecting metastases compared with unenhanced MRI. Additional DWI may be able to reduce oversight of lesions in Gd-EOB-DTPA-enhanced 1.5-T MRI for detecting colorectal liver metastases. © Japan Radiological Society 2012 |
abstractGer |
Purpose We compared diagnostic ability for detecting hepatic metastases between gadolinium ethoxy benzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) on a 1.5-T system, and determined whether DWI is necessary in Gd-EOB-DTPA-enhanced MRI for diagnosing colorectal liver metastases. Materials and methods We assessed 29 consecutive prospectively enrolled patients with suspected metachronous colorectal liver metastases; all patients underwent surgery and had preoperative Gd-EOB-DTPA-enhanced MRI. Overall detection rate, sensitivity for detecting metastases and benign lesions, positive predictive value, and diagnostic accuracy (Az value) were compared among three image sets [unenhanced MRI (DWI set), Gd-EOB-DTPA-enhanced MRI excluding DWI (EOB set), and combined set]. Results Gd-EOB-DTPA-enhanced MRI yielded better overall detection rate (77.8–79.0 %) and sensitivity (87.1–89.4 %) for detecting metastases than the DWI set (55.9 % and 64.7 %, respectively) for one observer (P < 0.001). No statistically significant difference was seen between the EOB and combined sets, although several metastases were newly detected on additional DWI. Conclusions Gd-EOB-DTPA-enhanced MRI yielded a better overall detection rate and higher sensitivity for detecting metastases compared with unenhanced MRI. Additional DWI may be able to reduce oversight of lesions in Gd-EOB-DTPA-enhanced 1.5-T MRI for detecting colorectal liver metastases. © Japan Radiological Society 2012 |
abstract_unstemmed |
Purpose We compared diagnostic ability for detecting hepatic metastases between gadolinium ethoxy benzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) and diffusion-weighted imaging (DWI) on a 1.5-T system, and determined whether DWI is necessary in Gd-EOB-DTPA-enhanced MRI for diagnosing colorectal liver metastases. Materials and methods We assessed 29 consecutive prospectively enrolled patients with suspected metachronous colorectal liver metastases; all patients underwent surgery and had preoperative Gd-EOB-DTPA-enhanced MRI. Overall detection rate, sensitivity for detecting metastases and benign lesions, positive predictive value, and diagnostic accuracy (Az value) were compared among three image sets [unenhanced MRI (DWI set), Gd-EOB-DTPA-enhanced MRI excluding DWI (EOB set), and combined set]. Results Gd-EOB-DTPA-enhanced MRI yielded better overall detection rate (77.8–79.0 %) and sensitivity (87.1–89.4 %) for detecting metastases than the DWI set (55.9 % and 64.7 %, respectively) for one observer (P < 0.001). No statistically significant difference was seen between the EOB and combined sets, although several metastases were newly detected on additional DWI. Conclusions Gd-EOB-DTPA-enhanced MRI yielded a better overall detection rate and higher sensitivity for detecting metastases compared with unenhanced MRI. Additional DWI may be able to reduce oversight of lesions in Gd-EOB-DTPA-enhanced 1.5-T MRI for detecting colorectal liver metastases. © Japan Radiological Society 2012 |
collection_details |
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title_short |
Detection of liver metastasis: is diffusion-weighted imaging needed in Gd-EOB-DTPA-enhanced MR imaging for evaluation of colorectal liver metastases? |
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Akahane, Masaaki Takao, Hidemasa Akai, Hiroyuki Kiryu, Shigeru Imamura, Hiroshi Watanabe, Yasushi Kokudo, Norihiro Ohtomo, Kuni |
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Materials and methods We assessed 29 consecutive prospectively enrolled patients with suspected metachronous colorectal liver metastases; all patients underwent surgery and had preoperative Gd-EOB-DTPA-enhanced MRI. Overall detection rate, sensitivity for detecting metastases and benign lesions, positive predictive value, and diagnostic accuracy (Az value) were compared among three image sets [unenhanced MRI (DWI set), Gd-EOB-DTPA-enhanced MRI excluding DWI (EOB set), and combined set]. Results Gd-EOB-DTPA-enhanced MRI yielded better overall detection rate (77.8–79.0 %) and sensitivity (87.1–89.4 %) for detecting metastases than the DWI set (55.9 % and 64.7 %, respectively) for one observer (P < 0.001). No statistically significant difference was seen between the EOB and combined sets, although several metastases were newly detected on additional DWI. Conclusions Gd-EOB-DTPA-enhanced MRI yielded a better overall detection rate and higher sensitivity for detecting metastases compared with unenhanced MRI. 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