Meeting Banner
Abstract #3866

True Temporal Resolution TWIST Imaging using Annihilating Filter-based Low-rank wrap around Hankel Matrix

Eun Ju Cha1, Kyong Hwan Jin2, Eung Yeop Kim3, and Jong Chul Ye1

1KAIST, Daejeon, Korea, Republic of, 2EPFL, Lausanne, Switzerland, 3Gacheon University Gil Medical Center, Incheon, Korea, Republic of

Temporal resolution is an important factor in dynamic enhanced contrast (DCE) MRI. Time-resolved angiography with interleaved stochastic trajectories (TWIST) has been widely used due to its improved temporal and spatial resolution. However, the temporal resolution of TWIST imaging is not a true one because of the view sharing. To provide more improved temporal resolution, we proposed a novel reconstruction algorithm based annihilating filter-based low rank Hankel matrix approach (ALOHA) which exploits the fundamental duality between sparsity in transform domain and low-rankness of Hankel matrix constructed using k-space data. Experimental result using in-vivo data showed the significantly improved temporal resolution than the conventional reconstruction.

This abstract and the presentation materials are available to members only; a login is required.

Join Here