Ward J P, Franklin D A, Wickham J E
Br J Radiol. 1976 Oct;49(586):836-9. doi: 10.1259/0007-1285-49-586-836.
Accurate measurement of the renal parenchymal area of intravenous urograms is discribed using a graphic tablet with a pressure-sensitive surfact linked on-line to a computer. The area outlined on the tablet is immediately computed and shown in square centimetres on a television screen and on a data print-out. The renal areas of 22 patients' urograms were studied before the three months after renal stone removal under local hypothermia. Renal function was measured by creatinine clearance. Conventional measurements of renal length, width and area were also performed for comparison. Results confirmed that while overall kidney size was reduced following operation, the parenchymal area and creatinine clearance were unaltered. This computer-based technique is simple to perform, quick and accurate, and provides quantitative information on intravenous urograms.
描述了一种使用与计算机联机的压敏表面活性剂图形输入板精确测量静脉尿路造影肾实质面积的方法。在图形输入板上勾勒出的面积会立即被计算出来，并以平方厘米为单位显示在电视屏幕和数据打印输出上。对22例患者在局部低温下进行肾结石切除术前及术后三个月的静脉尿路造影的肾面积进行了研究。通过肌酐清除率来测量肾功能。还进行了肾脏长度、宽度和面积的传统测量以作比较。结果证实，虽然术后肾脏总体大小减小，但实质面积和肌酐清除率未改变。这种基于计算机的技术操作简单、快速且准确，并能提供静脉尿路造影的定量信息。
