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Updated: Aug 4, 2026

Whole-body PET/MRI of Pediatric Patients: The Details That Matter
Published on: December 19, 2017
[Renal size in children with normal renal 99mTc-DMSA scan: building a nomogram with scintigraphic length]
G Lobo Sotomayor1, D Ladrón de Guevara Hernández, F Arnello Viveros
1Unidad de Medicina Nuclear, CDT Hospital San Juan de Dios, Santiago, Chile.
Aim:
The aim of this study was to evaluate renal size in children with normal 99mTc-DMSA scans and to compare it with the published ultrasonographic values.
Material And Methods:
Renal length of DMSA normal scans obtained from 253 children with history of urinary tract infection was measured. Regression analysis and length/age curves were done. Scintigraphic values were compared with published normal ultrasonographic length.
Results:
Regression algorithm for the whole group of patients was length (cm) = 6.1727 age (yr)0,1535. In the first year of life the equation was length (cm) = 0.1524 age (month) + 4.568, and in 1-16 yr children it was length (cm) = 0.2644 age (yr) + 6.319. There were no significant differences between both genders or in regards to reference ultrasonographic data.
Conclusion:
Both renal 99mTc-DMSA scintigraphy and ultrasonography are useful tools for estimating renal size in children according age.
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