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Title: Four-dimensional superquadric-based cardiac phantom for Monte Carlo simulation of radiological imaging systems

Abstract

A four-dimensional (x, y, z, t) composite superquadric-based object model of the human heart for Monte Carlo simulation of radiological imaging systems has been developed. The phantom models the real temporal geometric conditions of a beating heart for frame rates up to 32 per cardiac cycle. Phantom objects are described by boolean combinations of superquadric ellipsoid sections.Moving spherical coordinate systems are chosen to model wall movement whereby points of the ventricle and atria walls are assumed to move towards a moving center-of-gravity point. Due to the non-static coordinate systems, the atrial/ventricular valve plane of the mathematical heart phantom moves up and down along the left ventricular long axis resulting in reciprocal emptying and filling of atria and ventricles. Compared to the base movement, the epicardial apex as well as the superior atria area are almost fixed in space. Since geometric parameters of the objects are directly applied on intersection calculations of the photon ray with object boundaries during Monte Carlo simulation, no phantom discretization artifacts are involved.

Authors:
; ; ;
Publication Date:
Research Org.:
Duke Univ. Medical Center, Durham, NC (US)
Sponsoring Org.:
USDOE; National Institutes of Health (NIH)
OSTI Identifier:
20013202
DOE Contract Number:  
FG02-96ER62150
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers)
Additional Journal Information:
Journal Volume: 46; Journal Issue: 6Pt3; Conference: 1998 Medical Imaging Conference, Toronto, Ontario (CA), 11/12/1998--11/14/1998; Other Information: PBD: Dec 1999; Journal ID: ISSN 0018-9499
Country of Publication:
United States
Language:
English
Subject:
56 BIOLOGY AND MEDICINE, APPLIED STUDIES; 55 BIOLOGY AND MEDICINE, BASIC STUDIES; PHANTOMS; MONTE CARLO METHOD; IMAGE PROCESSING; HEART; FOUR-DIMENSIONAL CALCULATIONS; CARDIOVASCULAR DISEASES

Citation Formats

Peter, J, Gilland, D R, Jaszczak, R J, and Coleman, R E. Four-dimensional superquadric-based cardiac phantom for Monte Carlo simulation of radiological imaging systems. United States: N. p., 1999. Web. doi:10.1109/23.819306.
Peter, J, Gilland, D R, Jaszczak, R J, & Coleman, R E. Four-dimensional superquadric-based cardiac phantom for Monte Carlo simulation of radiological imaging systems. United States. https://doi.org/10.1109/23.819306
Peter, J, Gilland, D R, Jaszczak, R J, and Coleman, R E. 1999. "Four-dimensional superquadric-based cardiac phantom for Monte Carlo simulation of radiological imaging systems". United States. https://doi.org/10.1109/23.819306.
@article{osti_20013202,
title = {Four-dimensional superquadric-based cardiac phantom for Monte Carlo simulation of radiological imaging systems},
author = {Peter, J and Gilland, D R and Jaszczak, R J and Coleman, R E},
abstractNote = {A four-dimensional (x, y, z, t) composite superquadric-based object model of the human heart for Monte Carlo simulation of radiological imaging systems has been developed. The phantom models the real temporal geometric conditions of a beating heart for frame rates up to 32 per cardiac cycle. Phantom objects are described by boolean combinations of superquadric ellipsoid sections.Moving spherical coordinate systems are chosen to model wall movement whereby points of the ventricle and atria walls are assumed to move towards a moving center-of-gravity point. Due to the non-static coordinate systems, the atrial/ventricular valve plane of the mathematical heart phantom moves up and down along the left ventricular long axis resulting in reciprocal emptying and filling of atria and ventricles. Compared to the base movement, the epicardial apex as well as the superior atria area are almost fixed in space. Since geometric parameters of the objects are directly applied on intersection calculations of the photon ray with object boundaries during Monte Carlo simulation, no phantom discretization artifacts are involved.},
doi = {10.1109/23.819306},
url = {https://www.osti.gov/biblio/20013202}, journal = {IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers)},
issn = {0018-9499},
number = 6Pt3,
volume = 46,
place = {United States},
year = {1999},
month = {12}
}