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KMID : 0357520150380040443
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Journal of Radiological Science and Technology
2015 Volume.38 No. 4 p.443 ~ p.449
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The Impacts of Piezoelectric Elements’ Defects On Color & Power Doppler Images
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Lee Kyung-Sung
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Abstract
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An ultrasound probe has a big impact on Doppler images even though it has very high risk of frequent function-breakdowns occurring in medical ultrasound scanners. This study experimentally analyses the impacts of an ultrasonic probe’s defected elements on power & color Doppler images.The results show that, the bigger the size of defected probe elements is, and the closer a group of action elements is to the center, the more the brightness of images and the velocity of Doppler diminish. When elements’ defects increase in color & power Doppler images, false images are formed to be mistaken for blood-vessel plaque in neighboring regions. Accordingly, whenever element defects are suspected, we need check-up process in B-mode. From this respective, it is advisable to have primary interest in a probe and carry out continuous probe QA for ultrasonography.
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KEYWORD
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Ultrasound probe, Defected elements, Group of action elements, Velocity of Doppler
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