title: High temporal and spatial resolution 3D time-resolved contrast-enhanced magnetic resonance angiography of the hands and feet.
abstract: Methods are described for generating 3D time-resolved contrast-enhanced magnetic resonance (MR) angiograms of the hands and feet. Given targeted spatial resolution and frame times, it is shown that acceleration of about one order of magnitude or more is necessary. This is obtained by a combination of 2D sensitivity encoding (SENSE) and homodyne (HD) acceleration methods. Image update times from 3.4-6.8 seconds are provided in conjunction with view sharing. Modular receiver coil arrays are described which can be designed to the targeted vascular region. Images representative of the technique are generated in the vasculature of the hands and feet in volunteers and in patient studies.
authors.affiliation: Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA.
authors.forename: Clifton R
authors.initials: CR
authors.lastname: Haider
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Riederer
authors.forename: Eric A
authors.initials: EA
authors.lastname: Borisch
authors.forename: James F
authors.initials: JF
authors.lastname: Glockner
authors.forename: Roger C
authors.initials: RC
authors.lastname: Grimm
authors.forename: Thomas C
authors.initials: TC
authors.lastname: Hulshizer
authors.forename: Thanila A
authors.initials: TA
authors.lastname: Macedo
authors.forename: Petrice M
authors.initials: PM
authors.lastname: Mostardi
authors.forename: Phillip J
authors.initials: PJ
authors.lastname: Rossman
authors.forename: Terri J
authors.initials: TJ
authors.lastname: Vrtiska
authors.forename: Phillip M
authors.initials: PM
authors.lastname: Young
mesh_terms: D000054:Acceleration; D000465:Algorithms; D000792:Angiography / Q000379:methods*; D003287:Contrast Media / Q000494:pharmacology*; D005528:Foot / Q000000981:diagnostic imaging / Q000473:pathology*; D006225:Hand / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D011928:Raynaud Disease / Q000473:pathology; D013997:Time Factors
chemical_list: D003287:Contrast Media