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Original Article

Korean Journal of Medical Physics 2008; 19(4): 227-230

Published online December 25, 2008

Copyright © Korean Society of Medical Physics.

Development of Ultrasound Phantom for Volume Calibration

부피 측정을 위한 초음파 팬텀 개발

Hye-young Kim, Ji-hae Lee, Kyung-Ja Lee, Hyunsuk Suh, Rena Lee

김혜영ㆍ이지혜ㆍ이경자ㆍ서현숙ㆍ이레나

Department of Radiation Oncology, School of Medicine, Ewha Womans University, Seoul, Korea

이화여자대학교 의과대학 방사선종양학교실

Abstract

The purpose of this study was to design and construct an ultrasound phantom for volume calibration and evaluate the volume measurement accuracy of a 2 dimensional ultrasonic system. Ultrasound phantom was designed, constructed and tested. The phantom consisted of a background material and a target. The background was made by mixing agarose gel with water. A target, made with an elastic material, was filled with water to vary its volume and shape and inserted into background material. To evaluate accuracy of a 2 dimensional ultrasonic system (128XP, ACUSON), three different shapes of targets (a sphere, 2 ellipsoids and a triangular prism) were constructed. In case of ellipsoid shape, two targets, one with same size length and width (ellipsoid 1) and another with the length 2 times longer than width (ellipsoid 2) were examined. The target volumes of each shape were varied from 94cc to 450cc and measurement accuracy was examined. The volume difference between the real and measured target of the sphere shape ranged between 6.7 and 11%. For the ellipsoid targets, the differences ranged from 9.2 to 10.5% with ellipsoid 1 and 25.7% with ellipsoid 2. The volume difference of the triangular prism target ranged between 20.8 and 35%. An easy and simple method of constructing an ultrasound phantom was introduced and it was possible to check the volume measurement accuracy of an ultrasound system.

KeywordsUltrasound phantom, Volume calibration

Korean Society of Medical Physics

Vol.35 No.2
June 2024

pISSN 2508-4445
eISSN 2508-4453
Formerly ISSN 1226-5829

Frequency: Quarterly

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