Abstract #3815

Whole-Heart Coronary MR Angiography with 2D Parallel Imaging: Comparison of Two Cartesian Sampling Schemes with and Without CAIPIRINHA Reordering

Xiaoming Bi¹, Randall Kroeker², Johannes Breuer³, Sven Zuehlsdorff¹, Peter Kellman⁴

¹Siemens Healthcare, Chicago, IL, United States; ²Siemens Healthcare, Winnipeg, Canada; ³Siemens AG Healthcare, Erlangen, Germany; ⁴National Institute of Health, Bethesda, MD, United States

The goal of this work was to: 1) investigate the feasibility of whole-heart coronary MRA in consecutive volunteers using 2D CAIPIRINHA sampling strategy; 2) compare the efficacy of 2D CAIPIRINHA to conventional reordering with total acceleration of 8 (PE x PA = 4 x 2) and matched protocol. Preliminary results from five consecutive volunteer studies showed improved parallel imaging g-factor with CAIPIRINHA reordering as compared to conventional reordering (CAIPIRINHA: 1.52 0.05; Conventional: 1.85 0.17, p = 0.038).