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Biomedical Applications Group
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New ultrasound technology shows promise
Projection ultrasound system design
Ultrasound imaging has become one of the most widely used medical imaging technologies for diagnostics and guiding images for surgical intervention because of its high portability, non-ionization, non-invasiveness and low cost. Standard ultrasound systems (B-scan) use the reflection of sound waves to produce images of what lies beneath the surface of an object. However, due to constructive and destructive interference of echo signals, significant speckle patterns have been the limiting factor on the image quality and broader use of conventional ultrasound.
Chu Chuan Liu and his advisor, Yue (Joseph) Wang, are using a novel, two-dimensional, ultrasound sensor from Imperium, Inc. to investigate a projection ultrasound system (C-scan).
C-scan operates much like a conventional X-ray system in which a source transmits signals through the object that are recorded by a sensor on the opposite side. This configuration eliminates the speckle problem of B-scan systems and enables the use of computed tomography (CT) algorithms for generating three-dimensional images as in an X-ray CAT scan. Medical applications in biopsy monitoring, foreign object detection, real-time imaging and mammography have been explored with the experimental system, yet with promising results.