Britton K E, Nimmon C C, Whitfield H N, Hendry W F, Wickham J E
Lancet. 1979 Apr 28;1(8122):905-7. doi: 10.1016/s0140-6736(79)91377-1.
A non-invasive test of nephron function, the renal parenchymal transit time (P.T.T.) index, is shown to be as accurate as antegrade pressure measurements in diagnosis of renal outflow obstruction. It is more sensitive than conventional methods of demonstrating the associated obstructive nephropathy. P.T.T. is useful in following the effects of surgery, or of temporising, in patients with confirmed or potential outflow tract obstruction. Renal radionuclide P.T.T. analysis gives the functional information essential for the management of patients in whom intravenous urography reveals a dilated renal pelvis.
一种肾单位功能的非侵入性检测方法——肾实质通过时间（P.T.T.）指数，在诊断肾流出道梗阻方面与顺行压力测量一样准确。它比显示相关梗阻性肾病的传统方法更敏感。P.T.T.对于跟踪手术效果或对已确诊或可能存在流出道梗阻的患者进行临时处理很有用。肾放射性核素P.T.T.分析可为静脉肾盂造影显示肾盂扩张的患者的管理提供重要的功能信息。
