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KMID : 0386119920280020241
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Journal of the Korean Radiological Society
1992 Volume.28 No. 2 p.241 ~ p.249
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An Experimental Study on Prediction of Gallstone Composition by Ultrasonography and Computed Tomography
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이종범
정세열/김건상/이용철/한만청/김진규
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Abstract
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Prediction f chemical composition of gallstones is a prerequisite in contemplating the chemical dissolution or extracorporeal shock wave lithotripsy of gallstones. The author retrospectively analysed the correlation between quantitative chemical
composition of gallstones and their ultrasonographic and computed tomographic findings. The ultrasonography(US) and computed tomography(CT) of 100 consecutive stones obtained from 100 patients were performed under the in vitro condition. Their US
and CT
fingings were grouped with certain patterns and each group was compared with the chemical composition of the stones.
Stones with entirely discernible cirumsference and homogeneous internal echo on US had high bilirubin and low cholesterol content. Acoustic shadows were frequently absent with those stones. Stones with variable internal echo on US had relatively
high
cholesterol content but their distribution range were wide. There was no correlationship between the cholesterol content and the CT No. of the gallstones. There was positive correlationship between the calcium content and the CT No. of
gallstones.
The
near totally calcified gallstones had very low cholesterol and high residue content. There was no relationship betweenthe calcification type and the ultrasonographic pattern.
In conclusion, those stones with entirely discernible circumsference and homogeneous internal echo on US were pigment stones. On the contrary, stones with variable internal echo had relatively high cholesterol content. CT could predict the
calcium
content with CT No., but could not predict the cholesterol content.
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KEYWORD
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