Pr. Hoskins, CHOICE OF MOVING TARGET FOR A STRING PHANTOM .2. ON THE PERFORMANCE TESTING OF DOPPLER ULTRASOUND SYSTEMS, Ultrasound in medicine & biology, 20(8), 1994, pp. 781-789
Citations number
8
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging",Acoustics
A string phantom was used to test a duplex system using several filame
nts: braided silk, nylon and O-ring rubber. The estimated pulsatility
index was identical for ah filaments tested. Range gate registration m
easurements were identical for all filaments tested. Maximum velocity
was underestimated in the region of a strong angular backscatter peak
this was the case for several of the braided silk filaments. This effe
ct was not observed for O-ring rubber. The paper concluded that O-ring
rubber is a suitable filament for the testing of several key Doppler
quantities. Recalibration of the string phantom velocity indicator is
necessary due to the large diameter of the O-ring rubber.