title: Radiation dose estimates for interstitial radiocolloid lymphoscintigraphy.
abstract: The spatial distribution of radioactivity in the injection site, and its rate of clearance, have been measured in patients undergoing various types of interstitial radiocolloid lymphoscintigraphy using 99mTc-antimony sulfide colloid. The clearance of radioactivity from the injection site, and the expansion with time of the localized radioactivity vary considerably for different sites of injection. Maximum absorbed dose estimates of 45.6 rads to the center of the injection site (rectus sheath) and 21 rads to individual lymph nodes have been calculated for patients undergoing internal mammary lymphoscintigraphy with 450 mu Ci injected radioactivity. Absorbed dose estimates for finger web, toe web, and perianal injection sites are also presented.
mesh_terms: D000965:Antimony / Q000008:administration & dosage / Q000378:metabolism; D001940:Breast / Q000000981:diagnostic imaging; D005260:Female; D006207:Half-Life; D006801:Humans; D007272:Injections, Intralymphatic; D008198:Lymph Nodes / Q000000981:diagnostic imaging*; D011829:Radiation Dosage; D011877:Radionuclide Imaging; D013667:Technetium / Q000008:administration & dosage / Q000378:metabolism; D017556:Technetium Compounds
chemical_list: D017556:Technetium Compounds; C019096:technetium Tc 99m antimony sulfide; D013667:Technetium; D000965:Antimony