Abstract #1357

Real-Time Prospective Adjustment of Inversion Time Using Arrhythmia Insensitive Inversion Recovery (AIIR) Algorithm for Delayed Hyper-Enhancement MRI

Ramkumar Krishnamurthy¹, Amol Pednekar², Jouke Smink³, Benjamin Cheong⁴, Raja Muthupillai⁴

¹Rice University, Houston, TX, United States; ²Philips Health Care, Houston, TX, United States; ³Philips Health Care, Best, TX, Netherlands; ⁴St. Luke's Episcopal Hospital, Houston, TX, United States

A novel arrhythmia insensitive inversion recovery (AIIR) algorithm for myocardial viability imaging is presented. This algorithm can track the magnetization regrowth of tissue of interest and prospectively calculate the inversion time required to minimize artifacts arising due to variation in the normal heart sinus rhythm. Benefits of this algorithm can be felt especially in following scenarios: 1) Limited patient breath-holding capacity, 2) Severe Arrhythmias, 3) Longer duration Respiratory motion compensated scans (3D and high spatial resolution) that encounter more RR intervals per acquisition. Phantom validation and patient results demonstrate the superiority of the AIIR algorithm.