Dual-photon Gd-153 absorptiometry of bone.
Dual-photon absorptiometry with gadolinium 153 was used to measure the mineral content of lumbar vertebrae in cadavers, excised vertebrae with marrow, and dry, marrow-free vertebrae. The error introduced by the surrounding soft tissue of cadavers was 3%, and the error in determining mineral mass or density in excised vertebrae was about 5%. The correlation coefficient between the results of Gd-153 and corrected iodine 125 (single-photon) absorptiometry on 24 femoral necks was 0.99, and the predictive error was 3.7%. Dual-photon absorptiometry accurately indicates bone mass and bone density and is only slightly affected by either surrounding tissue or fat changes in bone marrow.
D001853:Bone Marrow / Q000032:analysis; D001842:Bone and Bones / Q000032:analysis; D005682:Gadolinium; D006801:Humans; D007457:Iodine Radioisotopes; D008159:Lumbar Vertebrae / Q000032:analysis / Q000000981:diagnostic imaging*; D008903:Minerals / Q000032:analysis; D011868:Radioisotopes; D011877:Radionuclide Imaging
D007457:Iodine Radioisotopes; D008903:Minerals; D011868:Radioisotopes; D005682:Gadolinium