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Radiology, Vol 126, 193-195, Copyright © 1978 by Radiological Society of North America

ARTICLES

Dose to the metaphyseal growth complexes in children undergoing 99mTc- EHDP bone scans

SR Thomas, MJ Gelfand, JG Kereiakes, FA Ascoli, HR Maxon, EL Saenger, PA Feller, VJ Sodd and P Paras

The spatial temporal distribution of radionuclides in children may differ greatly from that accepted for adults. Following injection of a bone-seeking agent (99mTc-EHDP), radioactivity in the metaphyseal growth complexes of the distal femur and proximal tibia was quantitated in a series of children 4 to 16 years of age, using a gamma camera/computer system. The dose to the growth plate was fount to range from 0.8 to 4.7 rads when adjusted to an administered activity of 200 muCi/kg, compared to approximately 0.6 rad to the adult skeleton for a corresponding study.




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