ArticleNuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment2016
An energy-optimized collimator design for a CZT-based SPECT camera.
Article in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 12 citations in OpenAlex.
- 3D-ring CZT gamma cameras in theranostics: is it a revolution?EJNMMI reports · 2026Article
- Compton Imaging of Ac-225 In Pre-clinical Phantoms With a 3D-positioning CZT Camera.IEEE transactions on radiation and plasma medical sciences · 2026Article
- Individual and Simultaneous Imaging ofIEEE transactions on radiation and plasma medical sciences · 2025Article
- Simulation studies of a full-ring, CZT SPECT system for whole-body imaging ofMedical physics · 2023Article
- Evaluation of a variable-aperture full-ring SPECT system using large-area pixelated CZT modules: A simulation study for brain SPECT applications.Medical physics · 2021Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
Abstract
In single photon emission computed tomography, it is a challenging task to maintain reasonable performance using only one specific collimator for radio-tracers over a broad spectrum of diagnostic photon energies, since photon scatter and penetration in a collimator differ with the photon energy. Frequent collimator exchanges are inevitable in daily clinical SPECT imaging, which hinders throughput while subjecting the camera to operational errors and damage. Our objective is to design a collimator, which independent of the photon energy performs reasonably well for commonly used radiotracers with low- to medium-energy levels of gamma emissions. Using the Geant4 simulation toolkit, we simulated and evaluated a parallel-hole collimator mounted to a CZT detector. With the pixel-geometry-matching collimation, the pitch of the collimator hole was fixed to match the pixel size of the CZT detector throughout this work. Four variables, hole shape, hole length, hole radius/width and the source-to-collimator distance were carefully studied. Scatter and penetration of the collimator, sensitivity and spatial resolution of the system were assessed for four radionuclides including
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Registered trials
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