64层螺旋CT平扫曲面重建技术对急性输尿管结石的诊断价值

目的：探讨64层螺旋CT曲面重建（CPR）技术对急性输尿管结石的诊断价值。方法：35例疑为输尿管结石的患者，男24例，女11例，年龄23-79岁，均行B超和64层螺旋CT平扫检查，将CT原始资料传送至工作站，用多平面重建（MPR）及CPR技术进行图像后处理，比较CT与B超诊断输尿管结石的阳性率。结果：35例输尿管结石患者中，CT诊断输尿管结石32例（91．4％），B超诊断输尿管结石20例（57．1％），CT对输尿管结石的诊断率高于B超（r=7．56，P〈0．01）；CPR使扩张的肾盂、输尿管全程显示在一幅图像上，便于全面观察结石的形态、大小和位置。结论：64层螺旋CT的CPR技术方便快捷、诊断准确率高，不需使用对比剂，尤其适用于肾绞痛患者的检查。

The value of curved planar reformation of 64-slice CT in diagnosis of ureteral stone

Objective：To explore the value of curved planar reconstruction （CPR）of 64-slice CT in the diagnosis of ureteral stone. Methods： Thirty-five patients （24 males, 11 females） aged from 23-79 years, suffering from acute renal colic suspicious to have ureteral stone underwent CT volume scan and B-ultrasound examination. The original data of all the patients were transferred to workstation for 3D reconstruction of multiple plane reconstruction （MPR） and CPR. The diagnostic accuracy for ureteral stones between CT and B-ultrasound was compared. Results： Thirty-two cases （91.4%） of ureteral stone were confirmed by CT, 20 （57. 1%） by B-ultrasound,the difference was significant （X^2 = 7.56, P〈0.01）. The location, shape and size of the stones and enlargement of re- nal pelvis and ureter were clearly displayed on one whole image in CPR. Conclusion： It is showed that 64-slice CT with GPR technique is advantageous in the diagnosis of patients with acute renal colic for its convenience, high rate of diagnostic accuracy, and avoidance of contrast agents.