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AJNR - American Journal of Neuroradiology

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American Journal of Neuroradiology 27:1119-1122, May 2006
© 2006 American Society of Neuroradiology

Technical Note
INTERVENTIONAL

Visualization of Hemodynamics in a Silicon Aneurysm Model Using Time-Resolved, 3D, Phase-Contrast MRI

H. Isoda^a, M. Hirano^b, H. Takeda^a, T. Kosugi^c, M.T. Alley^d, M. Markl^d,e, N.J. Pelc^d and H. Sakahara^a

^a Department of Radiology, Hamamatsu University, School of Medicine, Hamamatsu, Japan
^b GE Yokogawa Medical Systems, Tokyo, Japan
^c Renaissance of Technology Corporation, Hamamatsu, Japan
^d Department of Radiology, Stanford University School of Medicine, Stanford, Calif
^e Department of Diagnostic Radiology, Medical Physics, University Hospital Freiburg, Freiburg, Germany

Address correspondence to Haruo Isoda, MD, PhD, Department of Radiology, Hamamatsu University, School of Medicine, 1-20-one Handayama, Hamamatsu, Shizuoka, 431-3192 Japan

SUMMARY: We performed time-resolved 3D phase-contrast MR imaging by using a 1.5T MR scanner to visualize hemodynamics in a silicon vascular model with a middle cerebral aneurysm. We ran an aqueous solution of glycerol as a flowing fluid with a pulsatile pump. Time-resolved images of 3D streamlines and 2D velocity vector fields clearly demonstrated that the aneurysm had 3D complex vortex flows within it during systolic phase. This technique provided us with time-resolved 3D hemodynamic information about the intracranial aneurysm.

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