3D time-resolved contrast-enhanced cerebrovascular MR angiography with subsecond frame update times using radial k-space trajectories and highly constrained projection reconstruction.
HYPR TRICKS is an acquisition method that combines radial k-space trajectories, sampling k-space at different rates (TRICKS), and a new strategy for image reconstruction that uses highly constrained backprojection reconstruction (HYPR). This approach provides 3D time-resolved contrast-enhanced MR angiograms of the cerebral vessels with subsecond frame update times and submillimeter in-plane spatial resolution. Artifacts are suppressed, and signal-to-noise ratio is well maintained, by using HYPR reconstruction.
Wu
Y
Y
Medical Physics, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792, USA.
Kim
N
N
Korosec
F R
FR
Turk
A
A
Rowley
H A
HA
Wieben
O
O
Mistretta
C A
CA
Turski
P A
PA
D002536:Cerebral Arteries / Q000033:anatomy & histology* / Q000473:pathology; D002560:Cerebrovascular Circulation; D003287:Contrast Media; D019786:Gadolinium DTPA; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional; D002538:Intracranial Arteriovenous Malformations / Q000175:diagnosis; D018810:Magnetic Resonance Angiography / Q000379:methods*
D003287:Contrast Media; C064925:gadodiamide; D019786:Gadolinium DTPA