Clinical Study

99mTc-Sestamibi/123I Subtraction SPECT/CT in Parathyroid Scintigraphy: Is Additional Pinhole Imaging Useful?

Figure 1

An example of a true-positive finding with SPECT/CT and with pinhole in primary hyperparathyroidism. (a) Fusion SPECT/CT images. (b) Anterior pinhole images (left: -sestamibi image; middle: 123I image; right: subtraction image). A 230 mg adenoma (arrows) was resected behind the lower right quadrant of the thyroid.