title: Time-resolved undersampled projection reconstruction magnetic resonance imaging of the peripheral vessels using multi-echo acquisition.
abstract: The hybrid projection reconstruction (PR) imaging provides high temporal resolution through an undersampled PR acquisition for the in-plane dimensions and Cartesian slice encoding for the through-plane dimension. The undersampling of projection data introduces streak artifact, which may severely compromise image quality. This study reports on a combination of multi-echo acquisition with time-resolved undersampled PR imaging and its application to peripheral magnetic resonance angiography. Multi-echo acquisition improved imaging speed effectively, thereby reducing the undersampling streak artifact and improving the temporal resolution. The gradient distortion was reduced through gradient calibration and accurate k-space trajectory measurement.
authors.affiliation: Department of Medical Physics, University of Wisconsin, E3/311 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792-3252, USA. jiang@mr.radiology.wisc.edu
authors.forename: Jiang
authors.initials: J
authors.lastname: Du
authors.forename: Aiming
authors.initials: A
authors.lastname: Lu
authors.forename: Walter F
authors.initials: WF
authors.lastname: Block
authors.forename: Francis J
authors.initials: FJ
authors.lastname: Thornton
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Grist
authors.forename: Charles A
authors.initials: CA
authors.lastname: Mistretta
mesh_terms: D016477:Artifacts; D003287:Contrast Media; D019786:Gadolinium DTPA; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007866:Leg / Q000098:blood supply; D018810:Magnetic Resonance Angiography / Q000379:methods*; D019047:Phantoms, Imaging; D013997:Time Factors
chemical_list: D003287:Contrast Media; C064925:gadodiamide; D019786:Gadolinium DTPA