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E2340. Renal Scintigraphy in Pediatrics
Authors
  1. Hiral Banker; University of Tennessee Health Science Center
  2. Harris Cohen; University of Tennessee Health Science Center
Background
Renal scintigraphy plays an important role in the pediatric age group for diagnosis and monitoring various renal pathologies e.g. renal scar, pelvi-ureteric junction obstruction, etc. It is useful to evaluate the function of the dysplastic kidney and differentiate true obstruction from non-obstructive urinary tract dilatation. It has a role in various congenital anomalies e.g. evaluating renal function in the bifid pelvicalyceal system or evaluation/identification of functioning ectopic kidney. It plays a major role in evaluating the function and post-operative abnormality of the renal transplant. The radiation dose from renal scintigraphy is very low as compared to CT scan abdomen or fluoroscopic voiding cystourethrogram and therefore more valuable in pediatrics. The objective of this presentation is to describe the renal scintigraphy method and illustrations of various renal conditions in pediatrics. The exhibit will describe the role of renal scintigraphy in renal pathologies and anomalies of pediatric patients with the illustration of cases comparing other modalities such as ultrasound.

Educational Goals / Teaching Points
Renal scintigraphy is used for evaluation of renal perfusion, and function as well as renal anatomy. It can be used when there is an allergy to CT or MRI contrast material. Renal scintigraphy is also preferred in patients with claustrophobia who cannot tolerate CT or MRI exams.  Nuclear renal scanning is an excellent modality for the qualitative as well as quantitative assessment of renal transplant function. It is useful in post-transplant complication detection as well.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Nuclear scintigraphy can evaluate renal anatomy, pathology, perfusion, and function. It is also helpful in evaluating associated ureteral abnormality.

Conclusion
Renal scintigraphy is an excellent method for renal function evaluation. It has a major role in pediatrics because it exposes the patient to lower radiation than a CT scan. Having lower dose radiation than voiding cystourethrogram, it can be used to monitor renal parenchymal integrity in patients with vesicoureteral reflux who have a higher possibility for developing a renal scar. It has a role in renal post-transplant abnormalities as well as other renal pathologies when CT contrast can not be tolerated.