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(Radiology. 2000;214:678-682.)
© RSNA, 2000

Neuroradiology

MR Angiography of the Intracranial Venous System1

Lishya Liauw, MD, Mark A. van Buchem, MD, PhD, Aart Spilt, MD, Francisca T. de Bruïne, MD, René van den Berg, MD, Jo Hermans, PhD and Martin N. J. M. Wasser, MD, PhD

1 From the Departments of Radiology (L.L., M.A.v.B., A.S., F.T.d.B., R.v.d.B., M.N.J.M.W.) and Medical Statistics (J.H.), Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, the Netherlands. Received March 1, 1999; revision requested April 26; revision received June 25; accepted August 2. Address reprint requests to L.L.

PURPOSE: To compare the effectiveness of different imaging planes at time-of-flight (TOF) magnetic resonance (MR) angiography and phase-contrast MR angiography in the visualization of the normal intracranial venous system.

MATERIALS AND METHODS: In 12 healthy volunteers, two-dimensional (2D) TOF MR angiography and three-dimensional (3D) phase-contrast MR angiography were performed in transverse, sagittal, and coronal planes. All data were displayed as maximum intensity projection (MIP) images. Four neuroradiologists assessed the visibility of 28 intracranial venous structures on the MIP images. Statistical analysis was performed by using the Friedman two-way analysis of variance and the Cochran Q test.

RESULTS: Visualization of the normal intracranial venous system was better with 3D phase-contrast and coronal 2D TOF MR angiography than with transverse or sagittal 2D TOF MR angiography (P < .05, Friedman test) for each observer and the group of observers. Differences were found between each of the 2D TOF and 3D phase-contrast MR angiographic sequences in the visualization of individual venous structures (Cochran Q test). The {kappa} values ranged from 0.36 to 0.71, which indicated a moderate to good agreement between observers.

CONCLUSION: The normal intracranial venous system is adequately visualized with 3D phase-contrast and coronal 2D TOF MR angiography.

Index terms: Cerebral blood vessels, MR, 176.12142, 177.12142, 176.91, 177.91 • Magnetic resonance (MR), angiography, 176.12142, 177.12142 • Magnetic resonance (MR), comparative studies, 176.12142, 177.12142 • Magnetic resonance (MR), maximum intensity projection, 176.12142, 177.12142 • Magnetic resonance (MR), phase imaging, 176.12142, 177.12142 • Magnetic resonance (MR), three-dimensional, 176.12142, 177.12142 • Magnetic resonance (MR), time of flight, 176.12142, 177.12142




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