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Performance Assessment of a Channel Multi-Pinhole Collimator for Myocardial Perfusion Imaging with SPECT: A Monte Carlo Simulation
- Source :
- Journal of Nuclear Research and Applications, Vol 3, Iss 3, Pp 18-22 (2023)
- Publication Year :
- 2023
- Publisher :
- Nuclear Science and Technology Research Institute (NSTRI), 2023.
-
Abstract
- While the conventional parallel-hole collimators are widely used in myocardial perfusion imaging (MPI) with SPECT, they are suboptimal in balancing the existing sensitivity-resolution compromise. Therefore, multi-pinhole collimation has been proposed to address the problem. In the present study, a channel multi-pinhole collimated SPECT scanner is modeled and then simulated using the GATE Monte Carlo simulation. The multi-pinhole collimator comprises eight apertures. The material, diameter, and height of the apertures were assumed to be varying. A comparison with conventional single-pinhole was also conducted. The results show that increasing the hole diameter leads to degraded spatial resolution for the multi-pinhole collimator. Compared to the single-pinhole, the multi-pinhole collimators suffer from projection overlapping and thus deteriorated spatial resolution. The findings confirm that the channel multi-pinhole collimators outperform the single-pinhole apertures by providing much higher sensitivity at the expense of slightly lower spatial resolution and therefore would be the collimator of choice for MPI with SPECT.
Details
- Language :
- English
- ISSN :
- 27833402
- Volume :
- 3
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of Nuclear Research and Applications
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.ff05b17d4d4646489dca71e001b72163
- Document Type :
- article
- Full Text :
- https://doi.org/10.24200/jon.2023.1066