Mermuys Koen P, Vanhoenacker Piet K, Chappel Philip, Van Hoe Lieven
Department of Radiology, Onze Lieve Vrouw Hospital Aalst, Moorselbaan 164, 9300 Aalst, Belgium.
Radiology. 2005 Mar;234(3):901-8. doi: 10.1148/radiol.2343031956.
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.
所有患者在参与研究前均获得了知情同意；该研究获得了机构审查委员会的批准。三维（3D）梯度回波磁共振序列可通过非对称k空间采样和图像数据插值进行优化，以实现快速采集。对21名女性和7名男性连续患者（平均年龄52.9岁；范围16 - 81岁）的脑静脉结构进行静脉成像时，前瞻性地对T1加权容积内插脑检查序列（采集时间1分24秒）与磁化准备快速采集梯度回波序列（采集时间6分6秒）进行了定性和定量比较。尽管容积内插序列的信号和对比度噪声比显著较低，但脑静脉结构可视化主观质量的差异并不显著（P >.05）。容积内插脑检查作为脑静脉结构3D成像更节省时间的替代方法似乎很有前景。
