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作者对122例135个肾上腺肿块作了螺旋CT研究,男71例,女51例,年龄12～87岁。经病理或随访证实74个肿块为腺瘤,61个肿块为非腺瘤。螺旋CT层厚5mm,床进速度7.5mm/s,在完全吸气时获得整个肾上腺的平扫。然后静脉团注120ml对比剂,行第二和第三次扫描,根据延迟扫描时间将病人分成30s和90s组共48例,60s和180s组共74例。10min后获得第四次扫描39例,30min扫描69例。对所有肿块,计算衰减值增加的绝对百分
The authors performed a spiral CT study of 122 cases of 135 adrenal masses, 71 males and 51 females, aged 12 to 87 years. 74 tumors were confirmed as adenomas by pathology or follow-up, and 61 tumors were non-adenomas. The spiral CT layer was 5 mm thick with a bed speed of 7.5 mm/s, and a plain scan of the entire adrenal gland was obtained at full inspiration. Then intravenous infusion of 120 ml of contrast medium was performed for the second and third scans. According to the delayed scan time, the patients were divided into a total of 48 patients in the 30s and 90s groups, and a total of 74 patients in the 60s and 180s groups. After 10 minutes, 39 cases were scanned for the fourth time and 69 cases were scanned for 30 minutes. Calculate the absolute percentage increase in attenuation for all lumps