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http://dx.doi.org/10.7776/ASK.2009.28.8.732

Manufacture of Flow Phantom with Stenosis and Imaging Evaluation of Power Doppler  

Park, Hee-Young (한서대학교 방사선학과)
Bae, Jong-Rim (대구대학교 물리학과)
Kim, Jeong-Koo (한서대학교 방사선학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.28, no.8, 2009 , pp. 732-739 More about this Journal
Abstract
Flow phantom with stenosis was manufactured using an auto-injector to obtain angiostenotic flow information and quality assurance (QA) for ultrasound diagnostic instrumentation. Effectiveness of manufactured flow phantom with stenosis was investigated with power Doppler that was known to have diagnostic efficiency for angiostenosis. The flow phantom with stenosis was manufactured to 70% stenosis with 8 mm and 2.4 mm silicon tube, and silicone tube was covered with gelatin that has acoustic characteristics similar to soft tissue. When the linear transducer was used for measurement, the estimated diameter of normal vessel was measured lower than that of normal value, and the estimated diameter of stenosed vessel was measured higher than that of normal value. The measured parameters were not affected except for the radical conditions such as gain of 60%, PRF of 3000 Hz, use of maximal filter or angle. In addition, when the convex transducer was used for measurement, measurement parameters were affected by gain, PRF, filter, and angle. Therefore it is expected that flow phantom with stenosis manufactured with an auto-injector will be utilized effectively for QA of angiostenotic diagnosis.
Keywords
Angiostenosis; Phantom; Power Doppler; Auto Injector;
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