双频超声及组织谐波成像与CT扫描在输尿管结石诊断中的应用

Dual frequency ultrasound,tissue harmonic image and CT in diagnosis of ureteral calculi

目的探讨低、高频超声、组织谐波成像与CT在输尿管结石诊断中的应用价值,以提高输尿管结石诊断符合率。方法对316例输尿管结石患者进行低、高频超声及组织谐波成像检查,并与CT扫描对照诊断。结果316例中输尿管上段结石81例,二维超声、组织谐波成像显示率分别为90%、98%,输尿管中段结石42例,二维超声、组织谐波成像显示率分别为67%、93%,输尿管膀胱壁段结石193例,二维超声、组织谐波成像显示率分别为89%、99%;其中132例进行CT扫描,上、中、下段结石显示率分别为60%、51%、85%。超声能显示0.3 cm结石,高频超声能显示结石最小为0.2 cm。CT较难显示0.3 cm以下的低密度结石。结论低、高频超声在输尿管结石诊断中可优势互补,组织谐波成像能显著提高二维图像质量,提高输尿管结石检出率,在输尿管中段结石诊断中有极高的应用价值,优于二维超声显像及CT扫描。

Objective To study the effect of dual frequency ultrasound, tissue harmonic image and CT in diagnosis of ureteral calculi. Methods Low and high frequency ultrasound tissue harmonic image （ THI ） and CT were applied to 316 patients with ureteral calculi. Results There were 81 patients with upper ureteral calculi in the 316 patients, whose detected rate of ultrasound and THI was 90% and 98%, respectively. There were 42 patients with middle ureteral calculi in the 316 patients, whose detected rate of ultrasound and TIH was 67% and 93% , respectively. There were 193 patients with lower ureteral calculi in the 316 patients, whose detected rate of ultrasound and TIH was 89% and 99%, respectively. The detected rate of CT was 60% , 51% and 85% in upper, middle and lower ureteral calculi, respectively. Conclusion THI can enhances the quality of two -dimension image, which is valuable for ureteral calculi, epsecially for middle ureteral calculi.