Scola F H, Cronan J J, Schepps B
Department of Diagnostic Imaging, Brown University Program in Medicine, Rhode Island Hospital, Providence 02902.
Radiology. 1989 May;171(2):519-20. doi: 10.1148/radiology.171.2.2649926.
This study was undertaken to determine whether the presence of blood vessels could mimic the appearance of grade I hydronephrosis on sonograms and thus cause false-positive readings. One hundred consecutive patients with grade I hydronephrosis were examined. Sample volumes were obtained with pulsed Doppler ultrasonography (US) at the site of the greatest separation of the central renal sinus echoes to determine if the separation was fluid accumulating in the collecting system, as in obstruction, or if the separation was actually caused by vessels that mimic hydronephrosis. Vascular structures accounted for the separation of the sinus echoes in 43% of patients. In patients 12 years of age or younger, this frequency rose to 61%. The simple procedure of evaluating the renal sinus echo separation with pulsed Doppler US should decrease the frequency of false-positive diagnoses of hydronephrosis and thus diminish the need for further confirmatory testing.
本研究旨在确定血管的存在是否会在超声检查中模拟I级肾积水的表现，从而导致假阳性读数。对连续100例I级肾积水患者进行了检查。使用脉冲多普勒超声（US）在肾窦中央回声分离最大的部位获取样本容积，以确定该分离是像梗阻那样由于收集系统中液体聚集所致，还是实际上由模拟肾积水的血管引起。43%的患者中，血管结构导致了肾窦回声的分离。在12岁及以下的患者中，这一频率升至61%。用脉冲多普勒超声评估肾窦回声分离这一简单操作应能降低肾积水假阳性诊断的频率，从而减少进一步进行确诊检查的必要性。
