title: CUDA accelerated uniform re-sampling for non-Cartesian MR reconstruction.
abstract: A grid-driven gridding (GDG) method is proposed to uniformly re-sample non-Cartesian raw data acquired in PROPELLER, in which a trajectory window for each Cartesian grid is first computed. The intensity of the reconstructed image at this grid is the weighted average of raw data in this window. Taking consider of the single instruction multiple data (SIMD) property of the proposed GDG, a CUDA accelerated method is then proposed to improve the performance of the proposed GDG. Two groups of raw data sampled by PROPELLER in two resolutions are reconstructed by the proposed method. To balance computation resources of the GPU and obtain the best performance improvement, four thread-block strategies are adopted. Experimental results demonstrate that although the proposed GDG is more time consuming than traditional DDG, the CUDA accelerated GDG is almost 10 times faster than traditional DDG.
authors.affiliation: College of Information Science and Engineering, Northeastern University, Shenyang, Liaoning, 110819, China.|Institute of Medical Information Computing and Network Information Serving, Northeastern University, Shenyang, Liaoning, 110819, China.
authors.forename: Chaolu
authors.initials: C
authors.lastname: Feng
authors.affiliation: College of Information Science and Engineering, Northeastern University, Shenyang, Liaoning, 110819, China.|Institute of Medical Information Computing and Network Information Serving, Northeastern University, Shenyang, Liaoning, 110819, China.|Key Laboratory of Medical Image Computing of Ministry of Education, Northeastern University, Shenyang, Liaoning, 110819, China.
authors.forename: Dazhe
authors.initials: D
authors.lastname: Zhao
mesh_terms: D000465:Algorithms; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation / Q000379:methods; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D019047:Phantoms, Imaging
keywords: CUDA acceleration; Gridding; magnetic resonance reconstruction; uniform re-sampling