Erik
Hedstrom1, Erik Bergvall1, Karin Markenroth Bloch2,3,
Freddy Stahlberg4,5, Hakan Arheden1
1Cardiac MR Group, Department of
Clinical Physiology, Lund University and Lund University Hospital, Lund,
Sweden; 2MR department, Lund University Hospital, Lund, Sweden; 3Philips
Medical Systems, Best, Netherlands; 4Department of Medical
Radiation Physics, Lund University, Lund, Sweden; 5Department of
Radiology, Lund University Hospital, Lund, Sweden
AIM:
We sought to determine whether the presence of contrast agent affects PC-CMR
measurements of aortic blood flow, and myocardial displacement of the left
ventricle in humans. METHODS: Velocity-encoded data was acquired pre and post
contrast agent administration. RESULTS: Cardiac output differed -0.040.52
l/min and myocardial displacement 0.10.5mm. Magnitude image contrast for
myocardial displacement was visually lower in the post contrast agent images.
CONCLUSIONS: Acquisition of aortic flow is feasible both in the absence and
presence of contrast agent. For myocardial displacement phase-contrast data
is assessable as such, but delineation not possible post contrast agent
administration due to lower image contrast.
Keywords