Comparison of Contrast Enhanced MRI, Tc-99m Hydroxy-Methylene Diphosphonate and Tc-99m Tetrofosmin Scinti-Mammography in Patients with Suspicious Breast Lesions

In patients with suspicious breast lesions, scintimammography (SM) using Tc-99m tetrofosmin (TETRO) and hydroxymethylene-diphosphonate (HDP) and Gd-DTPA MRI were performed. For both TETRO and MRI sensitivity was 93% compared to 71% for HDP; specificity was lower for TETRO and HDP (71%) than for MRI (86%). This preliminary study shows that, in contrast to HDP, TETRO SM and Gd-DTPA MRI are of additional diagnostic value in diagnosing breast cancer.