Wu F, Snow B, Taylor A
J Nucl Med. 1986 Jul;27(7):1154-6.
A 5-wk-old male presented with radiographic findings of a duplicated collecting system. A [99mTc]DMSA scan was requested to evaluate cortical function. Images obtained immediately. postinjection showed activity restricted to the upper poles; in contrast, delayed images at 4 hr showed activity in the bladder and throughout both kidneys. Catheterizing the patient drained the activity from the bladder but had little effect on the refluxed renal activity. The early [99mTc]DMSA images were critical in making the proper interpretation. Technetium-99m DMSA is excreted into the urine and this fact needs to be considered when interpreting scans of patients with possible reflux or obstruction. When DMSA scans are obtained in pediatric patients with possible reflux, catheterization prior to the study and early images prior to the appearance of DMSA in the collecting system are recommended.
一名5周大的男性患儿，影像学检查发现重复集合系统。要求进行[99mTc]二巯基丁二酸（DMSA）扫描以评估皮质功能。注射后立即获得的图像显示活性局限于上极；相比之下，4小时的延迟图像显示膀胱及双肾均有活性。对患者进行插管引流膀胱内的活性，但对反流至肾脏的活性影响不大。早期的[99mTc]DMSA图像对做出正确解释至关重要。锝-99m DMSA排泄到尿液中，在解释可能存在反流或梗阻患者的扫描结果时需要考虑这一事实。当对可能存在反流的儿科患者进行DMSA扫描时，建议在检查前进行插管，并在集合系统中出现DMSA之前获取早期图像。
