Classification of gallstones with ultrasound

Caroline Kocherscheidt; Ulla Albert M.D.; Franz Werner Albert M.D.; Madhukar C. Pandit; Matthias Pfeiffer; J. Racky

doi:10.1117/12.382233

12 April 2000 Classification of gallstones with ultrasound

Caroline Kocherscheidt, Ulla Albert M.D., Franz Werner Albert M.D., Madhukar C. Pandit, Matthias Pfeiffer, J. Racky

Proceedings Volume 3982, Medical Imaging 2000: Ultrasonic Imaging and Signal Processing; (2000) https://doi.org/10.1117/12.382233
Event: Medical Imaging 2000, 2000, San Diego, CA, United States

Abstract

The in vivo determination of the composition of gallstones is of interest to physicians, as it would offer the basis for choosing the appropriate therapy: high calcium content stones would call for laparoscopy, calcium free stones are smashed with a lithotriptor and flushed out using oral solvents. In publications regarding gallstone examinations employing ultrasound, opinion is divided as to whether or not the B-mode image is correlated with the stone composition. The following work aims at resolving this controversy. B-scans were examined in vivo and in vitro. The B-scans were segmented and several texture based features were tried out. Calcification was verified by x-ray imaging. The evaluation of the texture parameters of the segmented areas do not show any calcification dependent clustering. Analysis of images obtained in vitro using a water bath do not offer any better results than those obtained in vivo. However, the features proposed in the literature do show some correlation with the surface geometry. The investigation of tissue characterization using ultrasound imaging seems to be still open.

Citation Download Citation

Caroline Kocherscheidt, Ulla Albert M.D., Franz Werner Albert M.D., Madhukar C. Pandit, Matthias Pfeiffer, and J. Racky "Classification of gallstones with ultrasound", Proc. SPIE 3982, Medical Imaging 2000: Ultrasonic Imaging and Signal Processing, (12 April 2000); https://doi.org/10.1117/12.382233

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KEYWORDS

Biliary calculi

Calcium

Image segmentation

Ultrasonography

In vitro testing

X-ray imaging

In vivo imaging

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