Sheley R C, Semonsen K G, Quinn S F
Department of Radiology, Legacy Good Samaritan Hospital and Medical Center, Portland, OR 97210, USA.
Am J Emerg Med. 1999 May;17(3):279-82. doi: 10.1016/s0735-6757(99)90124-9.
This study assessed the clinical effectiveness of unenhanced helical (spiral) computed tomography (CT) for evaluation of patients presenting with symptoms of renal colic. Two hundred patients with symptoms and signs of renal colic (flank or groin pain, hematuria) were imaged. Unenhanced CT was performed using 5-mm collimation with a pitch of 1.5 to 1.8. Image reconstruction was performed at 3-mm intervals. Exam time was approximately 5 minutes. The financial charge at the study institution was the same as for an intravenous urogram. Clinical follow-up was performed by review of available medical records and patient interviews. The sensitivity for detecting clinically relevant ureteral and bladder calculi was 0.862 (0.95 confidence interval [CI] 0.771 to 0.927), the specificity was 0.914 (0.95 CI 0.837 to 0.962), and the accuracy was 0.89 (0.95 CI 0.833 to 0.931). Helical CT is an effective technique in the evaluation of suspected acute urinary tract obstruction.
本研究评估了非增强螺旋CT对有肾绞痛症状患者的临床评估效果。对200例有肾绞痛症状和体征（侧腹或腹股沟疼痛、血尿）的患者进行了成像检查。采用5毫米准直、螺距为1.5至1.8进行非增强CT扫描。以3毫米间隔进行图像重建。检查时间约为5分钟。研究机构的费用与静脉肾盂造影相同。通过查阅现有病历和患者访谈进行临床随访。检测临床相关输尿管和膀胱结石的敏感性为0.862（95%置信区间[CI]0.771至0.927），特异性为0.914（95%CI 0.837至0.962），准确性为0.89（95%CI 0.833至0.931）。螺旋CT是评估疑似急性尿路梗阻的有效技术。
