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Updated: Aug 20, 2026

A Whole Body Dosimetry Protocol for Peptide-Receptor Radionuclide Therapy (PRRT): 2D Planar Image and Hybrid 2D+3D SPECT/CT Image Methods
Published on: April 24, 2020
Optimization of parathyroid imaging by simultaneous dual energy planar and single photon emission tomography
Vijay S Dontu1, Andrew G Kettle, Michael J O'Doherty
1Nuclear Medicine Department, Kent & Canterbury Hospital, East Kent Hospitals NHS Trust, Ethelbert Road, Canterbury CT1 3NG, Kent, UK. vijay-dontu@hotmail.com
Background:
Single photon emission tomography (SPET) gives valuable 3-dimensional information, but prolongs the time of imaging and increases the possibility of patient movement. We therefore investigated a method for the optimization of SPET.
Method:
Using an in-house fabricated thyroid/parathyroid neck phantom simultaneous dual energy (DE) 1223I/99mTc imaging to localize parathyroid glands was assessed both in planar and SPET modes.
Results:
Experiments demonstrated improved spatial resolution and contrast for planar pinhole imaging compared to parallel collimation. For DE-SPET compared to planar pinhole imaging more glands in the phantom were visualized by the improved contrast.
Conclusion:
We conclude that DE-SPET for parathyroid imaging is feasible to aid the accurate localization of parathyroid adenomas. For planar imaging pinhole collimation is superior to parallel hole collimation.
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