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Ultrasound micro-power meter

Novel ultrasound imaging procedures such as harmonics imaging and power Doppler imaging have increased the amount of ultrasonic energy deposition into patient body tremendously. Two safety indices, Thermal and Mechanical Indices, have been proposed to address this concern. Accurate value of ultrasou...

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Main Authors:	Ong H.S., Ritenour E.R.
Other Authors:	16023044400
Format:	Article
Published:	2023
Subjects:	Heat conduction calorimeter Micro-calorimetry Ultrasound exposimetry article calorimeter electrical equipment engineering radiation measurement thermal conductivity ultrasound
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id	my.uniten.dspace-29881
record_format	dspace
spelling	my.uniten.dspace-298812023-12-28T16:58:02Z Ultrasound micro-power meter Ong H.S. Ritenour E.R. 16023044400 7003924569 Heat conduction calorimeter Micro-calorimetry Ultrasound exposimetry article calorimeter electrical equipment engineering radiation measurement thermal conductivity ultrasound Novel ultrasound imaging procedures such as harmonics imaging and power Doppler imaging have increased the amount of ultrasonic energy deposition into patient body tremendously. Two safety indices, Thermal and Mechanical Indices, have been proposed to address this concern. Accurate value of ultrasound power output is required in order to calculate the indices. Therefore, this give rises to the need for a device that is capable of measuring ultrasound output power quickly and accurately. In this paper, a micro-power meter, a dual chamber heat conduction calorimeter (HCC) is designed, built and tested for the purpose of measuring ultrasonic output power of clinical diagnostic ultrasound devices. The dual chamber heat conduction calorimeter (HCC) is composed of two identical water filled Aluminum wells housed in two separated compartments of an insulated box. The two compartments form the measuring and reference chambers of the calorimeter. The wells are sealed with plastic membranes that constitute the entrance window for the ultrasound. The bottom of each well is stuffed with a 4 cm layer of 0.5 cm thick rubber pads. These pads serve as a sonic-to-heat energy exchanger. A small resistive heater is embedded in both rubber pads for calibration purposes. Heat is measured with a series of Seebeck effect thermoelectric devices (thermopiles) sandwiched between the well and the heat sink surrounding the wells. The output voltage signal from the thermopiles is amplified, digitized, then analyzed and displayed in term of Thermal Index with a PC-based system. The performance and sensitivity of the HCC is tested and measured, initially with the embedded resistive heaters, then with an experimental transducer, and lastly with transducers from clinical ultrasound scanners. Final 2023-12-28T08:58:02Z 2023-12-28T08:58:02Z 2000 Article 2-s2.0-0033917754 https://www.scopus.com/inward/record.uri?eid=2-s2.0-0033917754&partnerID=40&md5=4671089510802c2d2bf31a695e451a7b https://irepository.uniten.edu.my/handle/123456789/29881 5 2 76 80 Scopus
institution	Universiti Tenaga Nasional
building	UNITEN Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Tenaga Nasional
content_source	UNITEN Institutional Repository
url_provider	http://dspace.uniten.edu.my/
topic	Heat conduction calorimeter Micro-calorimetry Ultrasound exposimetry article calorimeter electrical equipment engineering radiation measurement thermal conductivity ultrasound
spellingShingle	Heat conduction calorimeter Micro-calorimetry Ultrasound exposimetry article calorimeter electrical equipment engineering radiation measurement thermal conductivity ultrasound Ong H.S. Ritenour E.R. Ultrasound micro-power meter
description	Novel ultrasound imaging procedures such as harmonics imaging and power Doppler imaging have increased the amount of ultrasonic energy deposition into patient body tremendously. Two safety indices, Thermal and Mechanical Indices, have been proposed to address this concern. Accurate value of ultrasound power output is required in order to calculate the indices. Therefore, this give rises to the need for a device that is capable of measuring ultrasound output power quickly and accurately. In this paper, a micro-power meter, a dual chamber heat conduction calorimeter (HCC) is designed, built and tested for the purpose of measuring ultrasonic output power of clinical diagnostic ultrasound devices. The dual chamber heat conduction calorimeter (HCC) is composed of two identical water filled Aluminum wells housed in two separated compartments of an insulated box. The two compartments form the measuring and reference chambers of the calorimeter. The wells are sealed with plastic membranes that constitute the entrance window for the ultrasound. The bottom of each well is stuffed with a 4 cm layer of 0.5 cm thick rubber pads. These pads serve as a sonic-to-heat energy exchanger. A small resistive heater is embedded in both rubber pads for calibration purposes. Heat is measured with a series of Seebeck effect thermoelectric devices (thermopiles) sandwiched between the well and the heat sink surrounding the wells. The output voltage signal from the thermopiles is amplified, digitized, then analyzed and displayed in term of Thermal Index with a PC-based system. The performance and sensitivity of the HCC is tested and measured, initially with the embedded resistive heaters, then with an experimental transducer, and lastly with transducers from clinical ultrasound scanners.
author2	16023044400
author_facet	16023044400 Ong H.S. Ritenour E.R.
format	Article
author	Ong H.S. Ritenour E.R.
author_sort	Ong H.S.
title	Ultrasound micro-power meter
title_short	Ultrasound micro-power meter
title_full	Ultrasound micro-power meter
title_fullStr	Ultrasound micro-power meter
title_full_unstemmed	Ultrasound micro-power meter
title_sort	ultrasound micro-power meter
publishDate	2023
_version_	1806425943825186816
score	13.222552

Ultrasound micro-power meter

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