Segmented slant hole collimator for stationary cardiac SPECT: Monte Carlo simulations

Medical Physics
Yanfei MaoGengsheng L Zeng

Abstract

This work is a preliminary study of a stationary cardiac SPECT system. The goal of this research is to propose a stationary cardiac SPECT system using segmented slant-hole collimators and to perform computer simulations to test the feasibility. Compared to the rotational SPECT, a stationary system has a benefit of acquiring temporally consistent projections. The most challenging issue in building a stationary system is to provide sufficient projection view-angles. A GATE (GEANT4 application for tomographic emission) Monte Carlo model was developed to simulate a two-detector stationary cardiac SPECT that uses segmented slant-hole collimators. Each detector contains seven segmented slant-hole sections that slant to a common volume at the rotation center. Consequently, 14 view-angles over 180° were acquired without any gantry rotation. The NCAT phantom was used for data generation and a tailored maximum-likelihood expectation-maximization algorithm was used for image reconstruction. Effects of limited number of view-angles and data truncation were carefully evaluated in the paper. Simulation results indicated that the proposed segmented slant-hole stationary cardiac SPECT system is able to acquire sufficient data for cardiac imagi...Continue Reading

References

Nov 24, 2004·Physics in Medicine and Biology·S JanC Morel
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Aug 7, 2007·Journal of Nuclear Cardiology : Official Publication of the American Society of Nuclear Cardiology·James A PattonDaniel S Berman
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May 13, 2010·IEEE Transactions on Information Technology in Biomedicine : a Publication of the IEEE Engineering in Medicine and Biology Society·Bin Zhang, Gengsheng L Zeng
Jun 30, 2010·European Journal of Nuclear Medicine and Molecular Imaging·Moshe BocherLana Volokh
May 22, 2013·Physics in Medicine and Biology·Yanfei Mao, Gengsheng L Zeng
Jun 21, 2014·Seminars in Nuclear Medicine·Piotr J SlomkaGuido Germano

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Citations

Jan 4, 2017·Medical Physics·Sandra van der VeldenHugo W A M de Jong
Aug 16, 2017·IEEE Transactions on Medical Imaging·W Paul SegarsEhsan Samei
Feb 7, 2019·Physics in Medicine and Biology·Jing Wu, Chi Liu

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