肾间中隔。在二巯基丁二酸（DMSA）单光子发射计算机断层扫描（SPECT）上可见的一种正常解剖变异。
The interrenicular septum. A normal anatomical variant seen on DMSA SPECT.
作者信息
Rossleigh M A
机构信息
Department of Nuclear Medicine, Prince of Wales Hospital, Sydney, Australia.
出版信息
Clin Nucl Med. 1994 Nov;19(11):953-5. doi: 10.1097/00003072-199411000-00003.
SPECT imaging has been shown to identify additional defects when applied to Tc-99m DMSA scintigraphy. However, the nature of these defects is uncertain. They may be because of small scars or anatomical variants. The interrenicular septum (IRS) is a normal finding that may mimic a scar on ultrasound examination or tomography. In this study, it was found that the IRS may be identified on Tc-99m DMSA SPECT and that it was present in 32% of patients. Its characteristic appearance is a linear area of absent tracer uptake extending from the renal hilum into the parenchyma, usually anterosuperiorly. The preservation of renal cortical uptake differentiates it from a scar, which results in a defect in the rim of cortical Tc-99m DMSA accumulation.
当应用于锝-99m二巯基丁二酸（Tc-99m DMSA）闪烁显像时，单光子发射计算机断层扫描（SPECT）成像已被证明能识别出额外的缺损。然而，这些缺损的性质尚不确定。它们可能是由于小疤痕或解剖变异所致。肾间中隔（IRS）是一种正常表现，在超声检查或断层扫描中可能会被误诊为疤痕。在本研究中，发现IRS可在Tc-99m DMSA SPECT上被识别，且在32%的患者中存在。其特征性表现是一条从肾门延伸至实质的线性无放射性示踪剂摄取区域，通常为前上方。肾皮质摄取的保留将其与疤痕区分开来，疤痕会导致皮质Tc-99m DMSA积聚边缘出现缺损。
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