Wideband Adiabatic Inversion with a Hyperbolic Secant 4 (HS4) Pulse for Late Gadolinium Enhancement MRI of Patients with Implanted Cardiac Devices
Shams Rashid1, Jiaxin Shao1, and Peng Hu1,2
1Radiological Sciences, University of California, Los Angeles, Los Angeles, CA, United States, 2Biomedical Physics Inter-Departmental Graduate Program, University of California, Los Angeles, Los Angeles, CA, United States
present a wideband inversion pulse of 8kHz bandwidth designed with a
hyperbolic secant 4 (HS4) adiabatic inversion pulse, for use in wideband late
gadolinium enhancement (LGE) MRI in patients with implantable cardioverter-defibrillators
(ICDs). This HS4 wideband pulse has more than twice the bandwidth of the
previously reported wideband hyperbolic secant (HS) adiabatic inversion pulse
for wideband LGE. We demonstrate that the wideband HS4 pulse is superior to the
wideband HS pulse in eliminating hyperintensity artifacts resulting from
off-resonance induced by an ICD in the myocardium.
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