Simple uniformity and penetration phantoms for the quality assurance of ultrasound scanners.
A pair of polyethylene bottles filled with tissue-mimicking gel provides a quick and economical method for sonographers in small hospitals and clinics to perform quality assurance on ultrasound scanners. The uniformity phantom filled with a homogeneous low attenuation gel provides a visual display of the spatial sensitivity of the probe's scanning pattern, and has proved particularly effective for detecting insensitive elements in transducer arrays. The penetration phantom contains a tissue equivalent attenuating wedge, which allows the penetration depth of the system to be measured under standard conditions. Any loss of system sensitivity will be reflected as a long term reduction in the measured penetration.
Groth
M J
MJ
Department of Physical Sciences, Royal Brisbane Hospital, Herston, Queensland, Australia.
D006801:Humans; D008961:Models, Structural; D011785:Quality Assurance, Health Care; D011786:Quality Control; D014463:Ultrasonography / Q000295:instrumentation* / Q000592:standards*