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Proceedings Paper

New ultrasound system for bone assessment
Author(s): Jonathan J. Kaufman; Gangming Luo; David Conroy; William A. Johnson; Ronald L. Altman; Robert S. Siffert
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Paper Abstract

This paper reports on a new ultrasound device for noninvasive assessment of bone. The device, known as the QRT 2000 -for Quantitative Real-Time-is entirely self-contained, portable, and handheld. The QRT 2000 is powered by 4 “AA” rechargeable batteries and permits near real-time evaluation of a novel set of ultrasound parameters and their on-line display to the user. The parameters have been studied both in vitro and clinically with a laboratory unit that measured the calcaneus in through transmission and computed the ultrasound features off-line. The data related the ultrasound parameters to the bone mineral density (BMD) of the calcaneus, spine and hip, as determined by x-ray absorptiometry, and demonstrated that the parameters were superior to the standard ones known as BUA and SOS (broadband ultrasound attenuation and speed-of-sound, respectively). The QRT 2000 was then constructed to compute the same parameters; however as noted about it does this in near real-time and provides visual feedback to the user while the measurements are being made. The compactness and portability of the unit make it also ideal for spaceflight applications. Finally, the QRT 2000 was designed to be manufactured at relatively low cost, and therefore should enable the significant expansion of quantitative ultrasound measurements to, for example, primary care physicians in this country and abroad, and including for use in the developing world.

Paper Details

Date Published: 28 April 2004
PDF: 11 pages
Proc. SPIE 5373, Medical Imaging 2004: Ultrasonic Imaging and Signal Processing, (28 April 2004); doi: 10.1117/12.535571
Show Author Affiliations
Jonathan J. Kaufman, CyberLogic, Inc. (United States)
Mount Sinai School of Medicine (United States)
Gangming Luo, New York Univ. Medical Ctr. (United States)
David Conroy, Design at Work (United States)
William A. Johnson, Techen, Inc. (United States)
Ronald L. Altman, Techen, Inc. (United States)
Robert S. Siffert, Mount Sinai School of Medicine (United States)


Published in SPIE Proceedings Vol. 5373:
Medical Imaging 2004: Ultrasonic Imaging and Signal Processing
William F. Walker; Stanislav Y. Emelianov, Editor(s)

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