Shinichi Takase1, Andreas Sigfridsson2, Hajime Sakuma3
1Department of Radiology, Mie University Hospital, Tsu, Mie, Japan; 2IMH/Cardiovascular Medicine, Linkoping University, Linkoping, Sweden; 3Department of Radiology, Mie University, Tsu, Mie, Japan
DENSE MR images were acquired in 10 volunteers within reduced scan time of 9 RR intervals by using spiral acquisition. The image quality with this approach was comparable to that by conventional 18 RR acquisitions, with peak Lagrangian strain of -0.20+/-0.03 for both methods. The bias between two methods for quantifying strain was 0.000, with 95% limits of agreement of }0.04. Spiral DENSE MRI acquired in 9 RR intervals is useful for patients who cannot hold their breath for 18 RR intervals, and may enable to use DENSE for stress imaging which is especially demanding for short breath holding time.