[Ultra-low-dose CT to search for stones in kidneys and collecting system].
Unenhanced computed tomography (CT) has a sensitivity of 97.7 to 100 % for the detection of urolithiasis. Using a modified examination protocol, the radiation exposure of a CT examination can be reduced to the level of a single conventional radiographic view of the abdomen (ultra-low-dose CT), assuming the examination is performed on a modern multirow CT. Automatic postprocessing of thin-section images can delineate stones on coronal images. In 30 patients, ultra-low-dose CT could detect more stones (6 renal and 19 ureteral stones) than ultrasonography.
Institut für Radiologie, Charité - Universitätsmedizin Berlin, Campus Charité Mitte, Berlin. rogalla@charite.de
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P
Rogalla
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C
Klüner
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M
Taupitz
D000328:Adult; D000368:Aged; D006801:Humans; D007669:Kidney Calculi / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011829:Radiation Dosage; D011860:Radiography, Abdominal; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods; D014514:Ureteral Calculi / Q000000981:diagnostic imaging*