[Evaluation of parathyroid imaging methods with 99mTc-MIBI--the comparison of planar images obtained using a pinhole collimator and a parallel-hole collimator]

Kaku Igaku. 1999 Jul;36(5):425-33.
[Article in Japanese]


Parathyroid scintigraphy with 99mTc-MIBI was performed using two kinds of collimators, namely, a pinhole one and a parallel-hole one, to evaluate which one was more suitable for the detection of hyperfunctioning parathyroid lesions. In the studies using 99mTc source, the pinhole collimator showed better efficiency and spatial resolution in the distance where the parathyroid scan are actually performed. In the phantom study, the nodular activities modeling parathyroid lesions were visualized better on the images obtained using the pinhole collimator. In clinical studies for 30 patients suspicious of hyperparathyroidism, hyperfunctioning parathyroid nodules were better detected when the pinhole collimator was used. In conclusion, the pinhole collimator was thought to be more suitable for parathyroid scintigraphy with 99mTc-MIBI than the parallel-hole collimator.

Publication types

  • Case Reports
  • Clinical Trial
  • Comparative Study

MeSH terms

  • Aged
  • Female
  • Gamma Cameras*
  • Humans
  • Hyperparathyroidism / diagnostic imaging
  • Male
  • Middle Aged
  • Parathyroid Glands / diagnostic imaging*
  • Radionuclide Imaging / instrumentation
  • Radionuclide Imaging / methods*
  • Radiopharmaceuticals*
  • Sensitivity and Specificity
  • Technetium Tc 99m Sestamibi*


  • Radiopharmaceuticals
  • Technetium Tc 99m Sestamibi