Impact of DOI in a Clinical SPECT/MRI System: A Simulation Study

Ashley J. Morahan, Kjell Erlandsson, Annalisa Cerrato, Ilenia D'Adda, Marco Carminati, Michael Ljungberg, Carlo E. Fiorini, Brian F. Hutton

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

A novel SPECT/MRI scanner has been modelled and tested here using Monte Carlo simulation software, SIMIND. The INSERT SPECT/MRI system faces challenges with event reconstruction due to photon depth of interaction. The novel SPECT system is subject to parallax errors due to its crystal size and slit aperture collimator. We present a simple measure of the DOI errors through SIMIND experiments; by modelling the DOI layers we are able to improve the reconstruction of projection data in the INSERT scanner. A set of capillary phantoms are simulated to explore the impact of DOI on the resolution of the scanner and establish corrections in the system's reconstruction.

Original languageEnglish
Title of host publication2020 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2020
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728176932
DOIs
Publication statusPublished - 2020
Event2020 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2020 - Boston, United States
Duration: 2020 Oct 312020 Nov 7

Conference

Conference2020 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2020
Country/TerritoryUnited States
CityBoston
Period2020/10/312020/11/07

Subject classification (UKÄ)

  • Radiology, Nuclear Medicine and Medical Imaging

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