Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty

Abstract Cavitation effects in pulsed laser ablation can cause severe deformation of tissue near the ablation site. In angioplasty, they result in a harmful dilatation and invagination of the vessel walls. We suggest to reduce cavitation effects by dividing the laser pulse energy into a pre-pulse wi...
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Autor*in:	Vogel, A. [verfasserIn] Engelhardt, R. Behnle, U. Parlitz, U.

Format:	Artikel
Sprache:	Englisch

Erschienen:	1996

Systematik:	UA 9001

Anmerkung:	© Springer-Verlag 1996

Übergeordnetes Werk:	Enthalten in: Applied physics. B, Lasers and optics - Springer-Verlag, 1981, 62(1996), 2 vom: Feb., Seite 173-182
Übergeordnetes Werk:	volume:62 ; year:1996 ; number:2 ; month:02 ; pages:173-182

Links:	Volltext

DOI / URN:	10.1007/BF01081122

Katalog-ID:	OLC2074255314

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520			\|a Abstract Cavitation effects in pulsed laser ablation can cause severe deformation of tissue near the ablation site. In angioplasty, they result in a harmful dilatation and invagination of the vessel walls. We suggest to reduce cavitation effects by dividing the laser pulse energy into a pre-pulse with low and an ablation pulse with high energy. The pre-pulse creates a small cavitation bubble which can be filled by the ablation products of the main pulse. For suitable energy ratios between the pulses, this bubble will not be enlarged by the ablation products, and the maximal bubble size remains much smaller than after a single ablation pulse. The concept was analyzed by numerical calculations based on the Gilmore model of cavitation dynamics and by high-speed photography of the effects of single and double pulses performed with a silicone tube as vessel model. The use of double pulses prevents the deformation of the vessel walls. The concept works with an energy ratio of up to about 1:30 between the pulses. For the calculated optimal ratio of 1:14.6, the bubble volume is reduced by a factor of 17.7. The ablation pulse is best applied when the pre-pulse bubble is maximally expanded, but the timing is not very critical.
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allfields	10.1007/BF01081122 doi (DE-627)OLC2074255314 (DE-He213)BF01081122-p DE-627 ger DE-627 rakwb eng 530 620 VZ 530 VZ UA 9001 VZ rvk Vogel, A. verfasserin aut Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty 1996 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 1996 Abstract Cavitation effects in pulsed laser ablation can cause severe deformation of tissue near the ablation site. In angioplasty, they result in a harmful dilatation and invagination of the vessel walls. We suggest to reduce cavitation effects by dividing the laser pulse energy into a pre-pulse with low and an ablation pulse with high energy. The pre-pulse creates a small cavitation bubble which can be filled by the ablation products of the main pulse. For suitable energy ratios between the pulses, this bubble will not be enlarged by the ablation products, and the maximal bubble size remains much smaller than after a single ablation pulse. The concept was analyzed by numerical calculations based on the Gilmore model of cavitation dynamics and by high-speed photography of the effects of single and double pulses performed with a silicone tube as vessel model. The use of double pulses prevents the deformation of the vessel walls. The concept works with an energy ratio of up to about 1:30 between the pulses. For the calculated optimal ratio of 1:14.6, the bubble volume is reduced by a factor of 17.7. The ablation pulse is best applied when the pre-pulse bubble is maximally expanded, but the timing is not very critical. Engelhardt, R. aut Behnle, U. aut Parlitz, U. aut Enthalten in Applied physics. B, Lasers and optics Springer-Verlag, 1981 62(1996), 2 vom: Feb., Seite 173-182 (DE-627)130297682 (DE-600)579693-3 (DE-576)015877272 0946-2171 nnns volume:62 year:1996 number:2 month:02 pages:173-182 https://doi.org/10.1007/BF01081122 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_23 GBV_ILN_30 GBV_ILN_31 GBV_ILN_40 GBV_ILN_60 GBV_ILN_70 GBV_ILN_105 GBV_ILN_121 GBV_ILN_130 GBV_ILN_170 GBV_ILN_2004 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_4012 GBV_ILN_4126 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4310 GBV_ILN_4313 GBV_ILN_4315 GBV_ILN_4319 GBV_ILN_4323 UA 9001 AR 62 1996 2 02 173-182
spelling	10.1007/BF01081122 doi (DE-627)OLC2074255314 (DE-He213)BF01081122-p DE-627 ger DE-627 rakwb eng 530 620 VZ 530 VZ UA 9001 VZ rvk Vogel, A. verfasserin aut Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty 1996 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 1996 Abstract Cavitation effects in pulsed laser ablation can cause severe deformation of tissue near the ablation site. In angioplasty, they result in a harmful dilatation and invagination of the vessel walls. We suggest to reduce cavitation effects by dividing the laser pulse energy into a pre-pulse with low and an ablation pulse with high energy. The pre-pulse creates a small cavitation bubble which can be filled by the ablation products of the main pulse. For suitable energy ratios between the pulses, this bubble will not be enlarged by the ablation products, and the maximal bubble size remains much smaller than after a single ablation pulse. The concept was analyzed by numerical calculations based on the Gilmore model of cavitation dynamics and by high-speed photography of the effects of single and double pulses performed with a silicone tube as vessel model. The use of double pulses prevents the deformation of the vessel walls. The concept works with an energy ratio of up to about 1:30 between the pulses. For the calculated optimal ratio of 1:14.6, the bubble volume is reduced by a factor of 17.7. The ablation pulse is best applied when the pre-pulse bubble is maximally expanded, but the timing is not very critical. Engelhardt, R. aut Behnle, U. aut Parlitz, U. aut Enthalten in Applied physics. B, Lasers and optics Springer-Verlag, 1981 62(1996), 2 vom: Feb., Seite 173-182 (DE-627)130297682 (DE-600)579693-3 (DE-576)015877272 0946-2171 nnns volume:62 year:1996 number:2 month:02 pages:173-182 https://doi.org/10.1007/BF01081122 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_23 GBV_ILN_30 GBV_ILN_31 GBV_ILN_40 GBV_ILN_60 GBV_ILN_70 GBV_ILN_105 GBV_ILN_121 GBV_ILN_130 GBV_ILN_170 GBV_ILN_2004 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_4012 GBV_ILN_4126 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4310 GBV_ILN_4313 GBV_ILN_4315 GBV_ILN_4319 GBV_ILN_4323 UA 9001 AR 62 1996 2 02 173-182
allfields_unstemmed	10.1007/BF01081122 doi (DE-627)OLC2074255314 (DE-He213)BF01081122-p DE-627 ger DE-627 rakwb eng 530 620 VZ 530 VZ UA 9001 VZ rvk Vogel, A. verfasserin aut Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty 1996 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 1996 Abstract Cavitation effects in pulsed laser ablation can cause severe deformation of tissue near the ablation site. In angioplasty, they result in a harmful dilatation and invagination of the vessel walls. We suggest to reduce cavitation effects by dividing the laser pulse energy into a pre-pulse with low and an ablation pulse with high energy. The pre-pulse creates a small cavitation bubble which can be filled by the ablation products of the main pulse. For suitable energy ratios between the pulses, this bubble will not be enlarged by the ablation products, and the maximal bubble size remains much smaller than after a single ablation pulse. The concept was analyzed by numerical calculations based on the Gilmore model of cavitation dynamics and by high-speed photography of the effects of single and double pulses performed with a silicone tube as vessel model. The use of double pulses prevents the deformation of the vessel walls. The concept works with an energy ratio of up to about 1:30 between the pulses. For the calculated optimal ratio of 1:14.6, the bubble volume is reduced by a factor of 17.7. The ablation pulse is best applied when the pre-pulse bubble is maximally expanded, but the timing is not very critical. Engelhardt, R. aut Behnle, U. aut Parlitz, U. aut Enthalten in Applied physics. B, Lasers and optics Springer-Verlag, 1981 62(1996), 2 vom: Feb., Seite 173-182 (DE-627)130297682 (DE-600)579693-3 (DE-576)015877272 0946-2171 nnns volume:62 year:1996 number:2 month:02 pages:173-182 https://doi.org/10.1007/BF01081122 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_23 GBV_ILN_30 GBV_ILN_31 GBV_ILN_40 GBV_ILN_60 GBV_ILN_70 GBV_ILN_105 GBV_ILN_121 GBV_ILN_130 GBV_ILN_170 GBV_ILN_2004 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_4012 GBV_ILN_4126 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4310 GBV_ILN_4313 GBV_ILN_4315 GBV_ILN_4319 GBV_ILN_4323 UA 9001 AR 62 1996 2 02 173-182
allfieldsGer	10.1007/BF01081122 doi (DE-627)OLC2074255314 (DE-He213)BF01081122-p DE-627 ger DE-627 rakwb eng 530 620 VZ 530 VZ UA 9001 VZ rvk Vogel, A. verfasserin aut Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty 1996 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 1996 Abstract Cavitation effects in pulsed laser ablation can cause severe deformation of tissue near the ablation site. In angioplasty, they result in a harmful dilatation and invagination of the vessel walls. We suggest to reduce cavitation effects by dividing the laser pulse energy into a pre-pulse with low and an ablation pulse with high energy. The pre-pulse creates a small cavitation bubble which can be filled by the ablation products of the main pulse. For suitable energy ratios between the pulses, this bubble will not be enlarged by the ablation products, and the maximal bubble size remains much smaller than after a single ablation pulse. The concept was analyzed by numerical calculations based on the Gilmore model of cavitation dynamics and by high-speed photography of the effects of single and double pulses performed with a silicone tube as vessel model. The use of double pulses prevents the deformation of the vessel walls. The concept works with an energy ratio of up to about 1:30 between the pulses. For the calculated optimal ratio of 1:14.6, the bubble volume is reduced by a factor of 17.7. The ablation pulse is best applied when the pre-pulse bubble is maximally expanded, but the timing is not very critical. Engelhardt, R. aut Behnle, U. aut Parlitz, U. aut Enthalten in Applied physics. B, Lasers and optics Springer-Verlag, 1981 62(1996), 2 vom: Feb., Seite 173-182 (DE-627)130297682 (DE-600)579693-3 (DE-576)015877272 0946-2171 nnns volume:62 year:1996 number:2 month:02 pages:173-182 https://doi.org/10.1007/BF01081122 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_23 GBV_ILN_30 GBV_ILN_31 GBV_ILN_40 GBV_ILN_60 GBV_ILN_70 GBV_ILN_105 GBV_ILN_121 GBV_ILN_130 GBV_ILN_170 GBV_ILN_2004 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_4012 GBV_ILN_4126 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4310 GBV_ILN_4313 GBV_ILN_4315 GBV_ILN_4319 GBV_ILN_4323 UA 9001 AR 62 1996 2 02 173-182
allfieldsSound	10.1007/BF01081122 doi (DE-627)OLC2074255314 (DE-He213)BF01081122-p DE-627 ger DE-627 rakwb eng 530 620 VZ 530 VZ UA 9001 VZ rvk Vogel, A. verfasserin aut Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty 1996 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 1996 Abstract Cavitation effects in pulsed laser ablation can cause severe deformation of tissue near the ablation site. In angioplasty, they result in a harmful dilatation and invagination of the vessel walls. We suggest to reduce cavitation effects by dividing the laser pulse energy into a pre-pulse with low and an ablation pulse with high energy. The pre-pulse creates a small cavitation bubble which can be filled by the ablation products of the main pulse. For suitable energy ratios between the pulses, this bubble will not be enlarged by the ablation products, and the maximal bubble size remains much smaller than after a single ablation pulse. The concept was analyzed by numerical calculations based on the Gilmore model of cavitation dynamics and by high-speed photography of the effects of single and double pulses performed with a silicone tube as vessel model. The use of double pulses prevents the deformation of the vessel walls. The concept works with an energy ratio of up to about 1:30 between the pulses. For the calculated optimal ratio of 1:14.6, the bubble volume is reduced by a factor of 17.7. The ablation pulse is best applied when the pre-pulse bubble is maximally expanded, but the timing is not very critical. Engelhardt, R. aut Behnle, U. aut Parlitz, U. aut Enthalten in Applied physics. B, Lasers and optics Springer-Verlag, 1981 62(1996), 2 vom: Feb., Seite 173-182 (DE-627)130297682 (DE-600)579693-3 (DE-576)015877272 0946-2171 nnns volume:62 year:1996 number:2 month:02 pages:173-182 https://doi.org/10.1007/BF01081122 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_20 GBV_ILN_21 GBV_ILN_22 GBV_ILN_23 GBV_ILN_30 GBV_ILN_31 GBV_ILN_40 GBV_ILN_60 GBV_ILN_70 GBV_ILN_105 GBV_ILN_121 GBV_ILN_130 GBV_ILN_170 GBV_ILN_2004 GBV_ILN_2006 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_4012 GBV_ILN_4126 GBV_ILN_4277 GBV_ILN_4306 GBV_ILN_4310 GBV_ILN_4313 GBV_ILN_4315 GBV_ILN_4319 GBV_ILN_4323 UA 9001 AR 62 1996 2 02 173-182
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source	Enthalten in Applied physics. B, Lasers and optics 62(1996), 2 vom: Feb., Seite 173-182 volume:62 year:1996 number:2 month:02 pages:173-182
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author	Vogel, A.
spellingShingle	Vogel, A. ddc 530 rvk UA 9001 Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty
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topic_title	530 620 VZ 530 VZ UA 9001 VZ rvk Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty
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title	Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty
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title_full	Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty
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title_sort	minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty
title_auth	Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty
abstract	Abstract Cavitation effects in pulsed laser ablation can cause severe deformation of tissue near the ablation site. In angioplasty, they result in a harmful dilatation and invagination of the vessel walls. We suggest to reduce cavitation effects by dividing the laser pulse energy into a pre-pulse with low and an ablation pulse with high energy. The pre-pulse creates a small cavitation bubble which can be filled by the ablation products of the main pulse. For suitable energy ratios between the pulses, this bubble will not be enlarged by the ablation products, and the maximal bubble size remains much smaller than after a single ablation pulse. The concept was analyzed by numerical calculations based on the Gilmore model of cavitation dynamics and by high-speed photography of the effects of single and double pulses performed with a silicone tube as vessel model. The use of double pulses prevents the deformation of the vessel walls. The concept works with an energy ratio of up to about 1:30 between the pulses. For the calculated optimal ratio of 1:14.6, the bubble volume is reduced by a factor of 17.7. The ablation pulse is best applied when the pre-pulse bubble is maximally expanded, but the timing is not very critical. © Springer-Verlag 1996
abstractGer	Abstract Cavitation effects in pulsed laser ablation can cause severe deformation of tissue near the ablation site. In angioplasty, they result in a harmful dilatation and invagination of the vessel walls. We suggest to reduce cavitation effects by dividing the laser pulse energy into a pre-pulse with low and an ablation pulse with high energy. The pre-pulse creates a small cavitation bubble which can be filled by the ablation products of the main pulse. For suitable energy ratios between the pulses, this bubble will not be enlarged by the ablation products, and the maximal bubble size remains much smaller than after a single ablation pulse. The concept was analyzed by numerical calculations based on the Gilmore model of cavitation dynamics and by high-speed photography of the effects of single and double pulses performed with a silicone tube as vessel model. The use of double pulses prevents the deformation of the vessel walls. The concept works with an energy ratio of up to about 1:30 between the pulses. For the calculated optimal ratio of 1:14.6, the bubble volume is reduced by a factor of 17.7. The ablation pulse is best applied when the pre-pulse bubble is maximally expanded, but the timing is not very critical. © Springer-Verlag 1996
abstract_unstemmed	Abstract Cavitation effects in pulsed laser ablation can cause severe deformation of tissue near the ablation site. In angioplasty, they result in a harmful dilatation and invagination of the vessel walls. We suggest to reduce cavitation effects by dividing the laser pulse energy into a pre-pulse with low and an ablation pulse with high energy. The pre-pulse creates a small cavitation bubble which can be filled by the ablation products of the main pulse. For suitable energy ratios between the pulses, this bubble will not be enlarged by the ablation products, and the maximal bubble size remains much smaller than after a single ablation pulse. The concept was analyzed by numerical calculations based on the Gilmore model of cavitation dynamics and by high-speed photography of the effects of single and double pulses performed with a silicone tube as vessel model. The use of double pulses prevents the deformation of the vessel walls. The concept works with an energy ratio of up to about 1:30 between the pulses. For the calculated optimal ratio of 1:14.6, the bubble volume is reduced by a factor of 17.7. The ablation pulse is best applied when the pre-pulse bubble is maximally expanded, but the timing is not very critical. © Springer-Verlag 1996
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title_short	Minimization of cavitation effects in pulsed laser ablation illustrated on laser angioplasty
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