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Study recommends development of standards for pediatric doses in nuclear medicine
Date:6/10/2008

Reston, Va.Results of a recent survey of 13 pediatric hospitals in North America show a lack of universally applied standards for administering radiopharmaceutical doses to children undergoing nuclear medicine examinations, according to an article in the June issue of The Journal of Nuclear Medicine.

"Modern nuclear medicine procedures are sensitive, minimally invasive, painless and safe and thus well suited for the evaluation of pediatric patients. They provide a wealth of unique and useful information that can be used to diagnose and treat many diseases of childhood," said S. Ted Treves, M.D., chief of the Division of Nuclear Medicine at Children's Hospital Boston and professor of radiology at Harvard Medical School.

In nuclear medicine, there are well-established guidelines for administering radiopharmaceutical doses for adults. However, Dr. Treves stated, "At this time, the majority of radiopharmaceutical package inserts do not provide guidance on pediatric doses. In imaging children, physicians typically base dosages on the patient's body weight, the nature and the type of problem being investigated, the equipment available and their own experience. This has led to the variations in dosage that currently exist."

This approach, however, may result in the smallest patients receiving a dose that is too small to produce adequate results. Also, according to experts, radiopharmaceuticals are handled differently in infants and young children. For example, circulation time in newborns is faster than it is in adult patients. These and other kinetic and metabolic differences can make a difference in the doses children require. The wide range of disorders, body sizes, stages of development, and level of patient cooperation require customized approaches to dosimety and to the various imaging techniques that are used in making a diagnosis.

"This survey identifies a very important questionwhat are the lowest radiopharmaceutical
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Contact: Kathryn Wiley
kwiley@snm.org
703-326-1184
Society of Nuclear Medicine
Source:Eurekalert

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