title: Three-dimensional cine imaging using variable-density spiral trajectories and SSFP with application to coronary artery angiography.
abstract: A single breath-hold 3D cardiac phase resolved steady-state free precession (SSFP) sequence was developed, allowing 3D visualization of the moving coronary arteries. A 3D stack of spirals was acquired continuously throughout the cardiac cycle, and a sliding window reconstruction was used to achieve high temporal resolution. A coil specific field of view reconstruction technique was combined with Parallel Imaging with Localized Sensitivities (PILS) to allow acquisition of a reduced field of view. A view ordering incorporating fat suppression was employed to allow use of sliding window reconstruction. The technique was evaluated on healthy volunteers (n=8), yielding images with 102 ms temporal resolution and 1.35 mm in-plane resolution, and reasonable visualization of the left and right coronary arteries was achieved.
authors.affiliation: Department of Biomedical Engineering, Cornell University, Ithaca, New York, USA, and Department of Radiology, Chinese PLA General Hospital, Beijing, China.
authors.forename: Bryan
authors.initials: B
authors.lastname: Kressler
authors.forename: Pascal
authors.initials: P
authors.lastname: Spincemaille
authors.forename: Thanh D
authors.initials: TD
authors.lastname: Nguyen
authors.forename: Liuquan
authors.initials: L
authors.lastname: Cheng
authors.forename: Zhao
authors.initials: Z
authors.lastname: Xi Hai
authors.forename: Martin R
authors.initials: MR
authors.lastname: Prince
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
mesh_terms: D000465:Algorithms; D016477:Artifacts; D003331:Coronary Vessels / Q000473:pathology*; D005583:Fourier Analysis; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D018810:Magnetic Resonance Angiography / Q000379:methods*; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods*; D009200:Myocardial Contraction / Q000502:physiology; D019047:Phantoms, Imaging