CT-Profile analysis of gallbladder stones

• Published in: Tando Vol. 9; no. 4; pp. 289 - 297
• Main Authors: OKAYAMA, Yasutaka, IIDA, Masayuki, GOTO, Kazuo, HOSHINO, Makoto
• Format: Journal Article
• Language: Japanese
• Published: Japan Biliary Association 1995
• Subjects: CT-Profile曲線; 胆石の肉眼分類; 胆石の質的診断
• ISSN: 0914-0077; 1883-6879
• DOI: 10.11210/tando1987.9.4_289

Qualitative diagnosis of gallbladder stones was attempted in 149 cases on the basis of the pattern and CT values of individual stones assessed along cross-sectional lines passing from the center of the stones to their maximum diameters (CT-Profiles). Macroscopic views of cutsurfaces of the stones were classified according to the guidelines of the Japanese Society of Gastroenterology. CT-Profiles were classified into six types. Correspondence between macroscopic findings and CTProfiles of each type of stones could be obtained as follows: pure cholesterol stones,29/33 (88%); combination stones,16/21 (76%); mixed stones,32/34 (94%); black stones,22/43 (51%) and calcium bilirubinate stones,13/18 (72%). Cholesterol stones were diagnosed excellently by CTProfiles, but pigment stones were not so good. Finally, correct diagnosis was gained in 75% of patients.