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Abstract #1322

A Realistic 4D Numerical Phantom for Quantitative First-Pass Myocardial Perfusion MRI

Lukas Wissmann1, Johannes F.M. Schmidt1, Sebastian Kozerke1

1Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland

The development of novel cardiac MRI methodology requThe development of novel cardiac MRI methodology requires simulation of both anatomical and functional information. To date, most numerical and physical phantoms tend to oversimplify anatomy and/or physiology. This study proposes a realistic 4D numerical phantom for quantitative myocardial perfusion MRI based on the XCAT model. It incorporates information about anatomy as well as dynamic contrast enhancement and, optionally, cardiac and respiratory motion. As an example application, the impact of dose and T1 uncertainty on myocardial blood flow quantification are studied.

Keywords

absence accelerated according achieved acquisition added adjustable agent analogy anatomical anatomy apex apical application applications applied appropriate arrival arterial authors axis background bars basal biomedical blood body bolus breathing bull cardiac choice cine comparable concentration constant contrast conversion converted convolution correction corresponded crucial curves degraded delay derived development deviation devised dimensional dose doses employed enabling engineering equations erroneous error errors estimation extended field five flow full fully function functions furthermore generated heart hence human illustrates implemented include incorporation indicate influence input intensities intensity investigated keeping magnetization magnitudes masks missing model modeled motion myocardial myocardium noise numerical optional options outcome pass perfusion phantom phantoms plots pool proposed providing quantification quantitative realistic realizations reduced reduction relaxed reoriented require residue resolution respectively saturation scaled scaling short showcase simulate simulated slices slight software solid spatial stays steps strategies summarized supporting systolic thank tissue together true underestimation variate varied various ventricle ventricular view white whole yield