Wideband arrhythmia-Insensitive-rapid (AIR) pulse sequence for cardiac T1 mapping without image artifacts induced by an implantable-cardioverter-defibrillator.

ABSTRACT:

Purpose

To develop and evaluate a wideband arrhythmia-insensitive-rapid (AIR) pulse sequence for cardiac T1 mapping without image artifacts induced by implantable-cardioverter-defibrillator (ICD).

Methods

We developed a wideband AIR pulse sequence by incorporating a saturation pulse with wide frequency bandwidth (8.9 kHz) to achieve uniform T1 weighting in the heart with ICD. We tested the performance of original and "wideband" AIR cardiac T1 mapping pulse sequences in phantom and human experiments at 1.5 Tesla.

Results

In five phantoms representing native myocardium and blood and postcontrast blood/tissue T1 values, compared with the control T1 values measured with an inversion-recovery pulse sequence without ICD, T1 values measured with original AIR with ICD were co

SUBMITTER: Hong K 

PROVIDER: S-EPMC4515197 | biostudies-literature | 2015 Aug

REPOSITORIES: biostudies-literature