To evaluate the clinic value of multicolor Doppler ultrasound and X-ray of KUB and intravenous pyelography (IVP)in the diagnosis of small ureteral calculus.

• 评价彩色多普勒超声与X-线尿路平片和静脉尿路造影(IVP)在输尿管小结石诊断中的临床价值。