Three-dimensional venography of the brain with a volumetric interpolated sequence |
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Authors: | Mermuys Koen P Vanhoenacker Piet K Chappel Philip Van Hoe Lieven |
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Institution: | Department of Radiology, Onze Lieve Vrouw Hospital Aalst, Moorselbaan 164, 9300 Aalst, Belgium. mermuyskoen@hotmail.com |
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Abstract: | Informed consent was obtained from all patients before participation; study was approved by institutional review board. Three-dimensional (3D) gradient-echo magnetic resonance sequences can be optimized for rapid acquisition through asymmetric k-space sampling and interpolation of image data. A T1-weighted volumetric interpolated brain examination sequence (acquisition time, 1 minute 24 seconds) was prospectively compared qualitatively and quantitatively with magnetization-prepared rapid acquisition gradient-echo sequence (acquisition time, 6 minutes 6 seconds) for venography of cerebral venous structures in 21 female and seven male consecutive patients (mean age, 52.9 years; range, 16-81 years). Although signal- and contrast-to-noise ratios were substantially lower for volumetric interpolated sequence, difference in the subjective quality of visualization of cerebral venous structures was not significant (P >.05). Volumetric interpolated brain examination seems promising as a more time-efficient alternative for 3D imaging of cerebral venous structures. |
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