The complementary roles of fast spin-echo MR imaging and double-phase 99m Tc-sestamibi scintigraphy for localization of hyperfunctioning parathyroid glands.

The greater specificity and anatomic coverage of sestamibi scintigraphy coupled with the greater anatomic detail provided by MR imaging and its improved sensitivity over sestamibi imaging in specific patients may justify using both techniques in high-risk surgical patients who have hyperparathyroidism, particularly patients undergoing repeat surgery.