DETERMINATION OF ABSORBED SUBCUTANEOUS TISSUE DOSAGES OF A FINGER WHEN HANDLING SYRINGES CONTAINING RADIOISOTOPES

概要

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The dose distribution in the tissues of personnel's fingers from handling a syringe containing radioisotopes were calculated. The surface dose of a finger at the contact point with the syringe and at the opposite side of the syringe were compared with experimental and calculated values. Dose distributions resulting from our calculations were recognized to be in the range of 30%. When the volume radiation source exists in the vicinity of finger tissues in the range of a few millimeters, the position of the depth dose curve of 50% was almost the same distance from the surface independent of γ-ray energy. It is desireable to estimate the absorbed dose of the tissues under the skin surface, within few millimeters, where many sweat glands and vessels exist. Since the radionuclide ^<99m>Tc is often administered to patients in high activity doses, it is necessary that the personnel avoid radiation hazzards. The use of protecting lead cyrinder covering the syringe decreases the exposure of the hands and must be enforced in their daily work.
名古屋市立大学の論文
1977-08-28