Single breath-hold 3D contrast-enhanced method for assessment of cardiac function.
Cardiac MRI function measurements are typically performed using 2D sequences and require multiple breath-holds to image the entire heart. A single 3D acquisition using a T(1)-shortening agent has many potential advantages over techniques that acquire multiple 2D images, including more consistent contrast and precise slice coverage. However, 3D techniques currently require much longer than a single breath-hold to complete. It has been shown that for MR angiography undersampled projection reconstruction can acquire much higher resolution per unit time than Fourier imaging with acceptable artifacts. By employing a gated, undersampled projection technique, high-resolution 3D multiphase volumes of the heart can be acquired in a single breath-hold. Short repetition times result in good myocardial suppression and a temporal aperture of 60 ms.
Barger
A V
AV
Department of Physics, University of Wisconsin, Madison, Wisconsin, USA. abarger@mr.radiology.wisc.edu
Grist
T M
TM
Block
W F
WF
Mistretta
C A
CA
D003287:Contrast Media; D005240:Feasibility Studies; D005583:Fourier Analysis; D005682:Gadolinium; D006321:Heart / Q000033:anatomy & histology* / Q000502:physiology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D012016:Reference Values
D003287:Contrast Media; D005682:Gadolinium