Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Letter from the editor

Letter from the editor t ~ h VOLUME 2. NUMBER 2 of ultrasound for breaking up renal stones, we are talking of power levels of 1.5 t o 2 W/cm2. Power levels in this range are also used for treatment of Meniere’s disease. There are several additional points t o be made in relation to potential toxicity of ultrasound which are not considered in the above-mentioned articles. The most important is the actual time the patient is exposed t o ultrasonic energy for any of the various medical applications of ultrasound. There is also a problem in ultrasound which is distinctly different from safety factors in radiology, where total dose is the prime consideration. There are two types of ultrasonic energy used in medicine, pulsed and continuous ultrasound. In the use of pulsed ultrasound, the figures presented above represent the average power per unit of time. However, during the time of peak pulse power we are talking of power intensities at the crystal face ranging from 4 t o 7 W/cm2, although the exposure t o the higher energy for each pulse may be less than 1%of the total examination time. Thus investigation of toxicity of ultrasound must include studies of both http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Clinical Ultrasound Wiley

Letter from the editor

Journal of Clinical Ultrasound , Volume 2 (2) – Jun 1, 1974
Download PDF
4 pages

Loading next page...
 
/lp/wiley/letter-from-the-editor-jCOJI4K9GE

References (0)

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
Wiley
Copyright
Copyright © 1974 Wiley Periodicals, Inc., A Wiley Company
ISSN
0091-2751
eISSN
1097-0096
DOI
10.1002/jcu.1870020202
Publisher site
See Article on Publisher Site

Abstract

t ~ h VOLUME 2. NUMBER 2 of ultrasound for breaking up renal stones, we are talking of power levels of 1.5 t o 2 W/cm2. Power levels in this range are also used for treatment of Meniere’s disease. There are several additional points t o be made in relation to potential toxicity of ultrasound which are not considered in the above-mentioned articles. The most important is the actual time the patient is exposed t o ultrasonic energy for any of the various medical applications of ultrasound. There is also a problem in ultrasound which is distinctly different from safety factors in radiology, where total dose is the prime consideration. There are two types of ultrasonic energy used in medicine, pulsed and continuous ultrasound. In the use of pulsed ultrasound, the figures presented above represent the average power per unit of time. However, during the time of peak pulse power we are talking of power intensities at the crystal face ranging from 4 t o 7 W/cm2, although the exposure t o the higher energy for each pulse may be less than 1%of the total examination time. Thus investigation of toxicity of ultrasound must include studies of both

Journal

Journal of Clinical Ultrasound – Wiley

Published: Jun 1, 1974

There are no references for this article.