Acoustic Power Measurement and Thermal Bioeffect Evaluation of Therapeutic Langevin Transducers

We recently proposed an analytical design method of Langevin transducers for therapeutic ultrasound treatment by conducting parametric study to estimate the effect of compression force on resonance characteristics. In this study, experimental investigations were further performed under various elect...
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Autor*in:	Jinhyuk Kim [verfasserIn] Jungwoo Lee [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2022

Schlagwörter:	Langevin transducer bioeffect thermal index acoustic power thermal ablation

Übergeordnetes Werk:	In: Sensors - MDPI AG, 2003, 22(2022), 2, p 624
Übergeordnetes Werk:	volume:22 ; year:2022 ; number:2, p 624

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/s22020624

Katalog-ID:	DOAJ025984926

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allfieldsSound	10.3390/s22020624 doi (DE-627)DOAJ025984926 (DE-599)DOAJ59937fb9dfa34616be9321a5bbdc4e08 DE-627 ger DE-627 rakwb eng TP1-1185 Jinhyuk Kim verfasserin aut Acoustic Power Measurement and Thermal Bioeffect Evaluation of Therapeutic Langevin Transducers 2022 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We recently proposed an analytical design method of Langevin transducers for therapeutic ultrasound treatment by conducting parametric study to estimate the effect of compression force on resonance characteristics. In this study, experimental investigations were further performed under various electrical conditions to observe the acoustic power of the fully equipped transducer and to assess its heat-related bioeffect. Thermal index (TI) tests were carried out to examine temperature rise and thermal damage induced by the acoustic energy in fatty porcine tissue. Acoustic power emission, TI values, temperature characteristics, and depth/size of thermal ablation were measured as a function of transducer’s driving voltage. By exciting the transducer with 300 V<sub<pp</sub< sinusoidal continuous waveform, for instance, the average power was 23.1 W and its corresponding TI was 4.1, less than the 6 specified by the Food and Drug Administration (FDA) guideline. The maximum temperature and the depth of the affected site were 74.5 °C and 19 mm, respectively. It is shown that thermal ablation is likely to be more affected by steep heat surge for a short duration rather than by slow temperature rise over time. Hence, the results demonstrate the capability of our ultrasonic transducer intended for therapeutic procedures by safely interrogating soft tissue and yet delivering enough energy to thermally stimulate the tissue in depth. Langevin transducer bioeffect thermal index acoustic power thermal ablation Chemical technology Jungwoo Lee verfasserin aut In Sensors MDPI AG, 2003 22(2022), 2, p 624 (DE-627)331640910 (DE-600)2052857-7 14248220 nnns volume:22 year:2022 number:2, p 624 https://doi.org/10.3390/s22020624 kostenfrei https://doaj.org/article/59937fb9dfa34616be9321a5bbdc4e08 kostenfrei https://www.mdpi.com/1424-8220/22/2/624 kostenfrei https://doaj.org/toc/1424-8220 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 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_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_206 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2111 GBV_ILN_2507 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 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_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 22 2022 2, p 624
language	English
source	In Sensors 22(2022), 2, p 624 volume:22 year:2022 number:2, p 624
sourceStr	In Sensors 22(2022), 2, p 624 volume:22 year:2022 number:2, p 624
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Langevin transducer bioeffect thermal index acoustic power thermal ablation Chemical technology
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container_title	Sensors
authorswithroles_txt_mv	Jinhyuk Kim @@aut@@ Jungwoo Lee @@aut@@
publishDateDaySort_date	2022-01-01T00:00:00Z
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callnumber-first	T - Technology
author	Jinhyuk Kim
spellingShingle	Jinhyuk Kim misc TP1-1185 misc Langevin transducer misc bioeffect misc thermal index misc acoustic power misc thermal ablation misc Chemical technology Acoustic Power Measurement and Thermal Bioeffect Evaluation of Therapeutic Langevin Transducers
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topic_title	TP1-1185 Acoustic Power Measurement and Thermal Bioeffect Evaluation of Therapeutic Langevin Transducers Langevin transducer bioeffect thermal index acoustic power thermal ablation
topic	misc TP1-1185 misc Langevin transducer misc bioeffect misc thermal index misc acoustic power misc thermal ablation misc Chemical technology
topic_unstemmed	misc TP1-1185 misc Langevin transducer misc bioeffect misc thermal index misc acoustic power misc thermal ablation misc Chemical technology
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title	Acoustic Power Measurement and Thermal Bioeffect Evaluation of Therapeutic Langevin Transducers
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title_full	Acoustic Power Measurement and Thermal Bioeffect Evaluation of Therapeutic Langevin Transducers
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title_sort	acoustic power measurement and thermal bioeffect evaluation of therapeutic langevin transducers
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title_auth	Acoustic Power Measurement and Thermal Bioeffect Evaluation of Therapeutic Langevin Transducers
abstract	We recently proposed an analytical design method of Langevin transducers for therapeutic ultrasound treatment by conducting parametric study to estimate the effect of compression force on resonance characteristics. In this study, experimental investigations were further performed under various electrical conditions to observe the acoustic power of the fully equipped transducer and to assess its heat-related bioeffect. Thermal index (TI) tests were carried out to examine temperature rise and thermal damage induced by the acoustic energy in fatty porcine tissue. Acoustic power emission, TI values, temperature characteristics, and depth/size of thermal ablation were measured as a function of transducer’s driving voltage. By exciting the transducer with 300 V<sub<pp</sub< sinusoidal continuous waveform, for instance, the average power was 23.1 W and its corresponding TI was 4.1, less than the 6 specified by the Food and Drug Administration (FDA) guideline. The maximum temperature and the depth of the affected site were 74.5 °C and 19 mm, respectively. It is shown that thermal ablation is likely to be more affected by steep heat surge for a short duration rather than by slow temperature rise over time. Hence, the results demonstrate the capability of our ultrasonic transducer intended for therapeutic procedures by safely interrogating soft tissue and yet delivering enough energy to thermally stimulate the tissue in depth.
abstractGer	We recently proposed an analytical design method of Langevin transducers for therapeutic ultrasound treatment by conducting parametric study to estimate the effect of compression force on resonance characteristics. In this study, experimental investigations were further performed under various electrical conditions to observe the acoustic power of the fully equipped transducer and to assess its heat-related bioeffect. Thermal index (TI) tests were carried out to examine temperature rise and thermal damage induced by the acoustic energy in fatty porcine tissue. Acoustic power emission, TI values, temperature characteristics, and depth/size of thermal ablation were measured as a function of transducer’s driving voltage. By exciting the transducer with 300 V<sub<pp</sub< sinusoidal continuous waveform, for instance, the average power was 23.1 W and its corresponding TI was 4.1, less than the 6 specified by the Food and Drug Administration (FDA) guideline. The maximum temperature and the depth of the affected site were 74.5 °C and 19 mm, respectively. It is shown that thermal ablation is likely to be more affected by steep heat surge for a short duration rather than by slow temperature rise over time. Hence, the results demonstrate the capability of our ultrasonic transducer intended for therapeutic procedures by safely interrogating soft tissue and yet delivering enough energy to thermally stimulate the tissue in depth.
abstract_unstemmed	We recently proposed an analytical design method of Langevin transducers for therapeutic ultrasound treatment by conducting parametric study to estimate the effect of compression force on resonance characteristics. In this study, experimental investigations were further performed under various electrical conditions to observe the acoustic power of the fully equipped transducer and to assess its heat-related bioeffect. Thermal index (TI) tests were carried out to examine temperature rise and thermal damage induced by the acoustic energy in fatty porcine tissue. Acoustic power emission, TI values, temperature characteristics, and depth/size of thermal ablation were measured as a function of transducer’s driving voltage. By exciting the transducer with 300 V<sub<pp</sub< sinusoidal continuous waveform, for instance, the average power was 23.1 W and its corresponding TI was 4.1, less than the 6 specified by the Food and Drug Administration (FDA) guideline. The maximum temperature and the depth of the affected site were 74.5 °C and 19 mm, respectively. It is shown that thermal ablation is likely to be more affected by steep heat surge for a short duration rather than by slow temperature rise over time. Hence, the results demonstrate the capability of our ultrasonic transducer intended for therapeutic procedures by safely interrogating soft tissue and yet delivering enough energy to thermally stimulate the tissue in depth.
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container_issue	2, p 624
title_short	Acoustic Power Measurement and Thermal Bioeffect Evaluation of Therapeutic Langevin Transducers
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Acoustic Power Measurement and Thermal Bioeffect Evaluation of Therapeutic Langevin Transducers

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