Radioisotopes are widely used in the United States and abroad in the clinical treatment of various types of cancers. In order to calculate the dosage in roentgen delivered to the malignant cells, one important factor is the ability to measure accurately the dosage administered to the patient.
This paper presents information on the current practices of standardization of radioisotopes by hospitals in the United States, points outh the major pitfalls that are encountered, and revinws the methods used to maintain uniformity in the measurement of dosages administered to humans.
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