Abstract #4449
Improving the precision of arrhythmia-insensitive rapid (AIR) T1 mapping through optimization of saturation recovery time delay
Kyle Erjin Jeong 1,2 , Kyungpyo Hong 1,2 , and Daniel Kim 2,3
1
Bioengineering Department, University of
Utah, Salt Lake City, Utah, United States,
2
Utah
Center for Advanced Imaging Research, University of
Utah, Salt Lake City, Utah, United States,
3
Department
of Radiology, University of Utah, Utah, United States
Arrhythmia insensitive rapid (AIR) cardiac T1 mapping is
particularly useful for imaging patients with arrhythmia
and/or rapid heart rates. The original AIR pulse
sequence was designed with saturation recovery time
delay (TD) of 600 ms. We sought to perform numerical
simulation to derive an optimal TD to achieve a good
balance between precision and scan time. Our numerical
experiments show that optimal TD is 780 ms for expected
T1 range of 400-2,000 ms at 3T. This simulation
framework is adaptable for patients with different heart
rates.
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