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Abstract #2205

Correction of the effects of heart rate changes on MOLLI

Rei Ikegawa1, Akira Ichikawa1, Nobuyoshi Oomi1, Kuninori Kobayashi1, Mika Mori1, and Shigehide Kuhara1

1Department of Medical Radiological Technology, Faculty of Health Sciences, Kyorin University, Mitaka, Japan

In fast cardiac T1 mapping implementing ECG-gating, the recovery time of the longitudinal magnetization will change with heart rate variation, which will affect T1 measurement accuracy. Several studies have investigated the influence of heart rate variability on modified look-locker inversion recovery; however, no analytical approach for correcting the T1 value after scanning has been reported to date. Here, we investigated the effect of heart rate change on measurement of T1 values and report a correction method. This proposed method can reduce the effect of arrhythmia in fast cardiac T1 mapping.

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