Radiation Exposure in Nuclear Cardiovascular Studies

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Abstract
Nuclear cardiovascular studies are being introduced in almost every Nuclear Medicine Department. The number of studies performed per week is increasing rapidly. The physical characteristics including the specific .gamma.-ray constant for radionuclides used in cardiovascular studies were listed. The radiation dose estimates to different organs of a patient administered with 201Tl and 99mTc radiopharmaceuticals were shown. The radiation levels measured around patients administered with 201Tl chloride, 99mTc HSA (human serum albumin) and 99mTc-MDP (methylene diphosphonate) were within the permissible limits. Radiation doses to different organs from nuclear cardiovascular studies were less than those associated with fluoroscopy, particularly cardiac catheterization. The gonadal doses received from cardiac catheterization and angiocardiography were lower than nuclear cardiovascular studies.

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