@article{oai:niigata-u.repo.nii.ac.jp:00006683, author = {Onuki, Keizo}, issue = {4}, journal = {Acta medica et biologica, Acta medica et biologica}, month = {Mar}, note = {Subjects for this study were 32 patients who had radiolucent stones in the gallbladder disclosed by conventional cholecystography. In all 12 patients with complete or partial dissolution of gallstones by gallstone dissolution therapy, the gallstone features on the CT scan were shown as an iso-density or a low-density in contrast to the bile, whereas, in 20 unresponsive patients, they were shown as shells of high-density in 9 out of 20 patients, and as a high-density in contrast to the bile in 7 out of 20 patients. If the gallstones contained 1.0 to 4.0% of calcium, the calcification could not be detected by conventional radiographic examinations, but could be clearly detected by CT examinations. In the present study, we concluded that the patients with gallstones containing more than 1% of calcium were not suitable for dissolution therapy and that CT examinations were very useful for deciding about using dissolution therapy of the gallstones.}, pages = {139--151}, title = {New attempts using computed tomography in determinig indication of gallstone dissolution therapy}, volume = {34}, year = {1987} }