Detection of Brain Metastases by 3-Dimensional Magnetic Resonance Imaging at 3 T: Comparison Between T1-Weighted Volume Isotropic Turbo Spin Echo Acquisition and 3-Dimensional T1-Weighted Fluid-Attenuated Inversion Recovery Imaging

作者：Yoshida Atsushi; Tha Khin Khin^*; Fujima Noriyuki; Zaitsu Yuri; Yoshida Daisuke; Tsukahara Akiko; Onodera Shunsuke; Shirato Hiroki; Terae Satoshi

来源：Journal of Computer Assisted Tomography, 2013, 37(1): 84-90.

DOI：10.1097/RCT.0b013e318271f216

• brain
• metastases
• magnetic resonance imaging
• volume isotropic turbo spin echo acquisition
• fluid-attenuated inversion recovery

Objective: This study aimed to compare the diagnostic performance in the detection of brain metastases between contrast-enhanced T1-weighted volume isotropic turbo spin echo acquisition (T1-VISTA) and 3-dimensional T1-weighted fluid-attenuated inversion recovery (3D-T1-FLAIR) imaging at 3 T. %26lt;br%26gt;Methods: Two neuroradiologists selected 129 true (metastases) and 70 false (vessels and artifacts) lesions on the contrast-enhanced T1-VISTA and 3D-T1-FLAIR images of 14 cancer patients with hyperintense brain lesions. Four blinded neuroradiologists distinguished between the true and false lesions, using a 5-point confidence rating scale. The receiver operating characteristic analysis was performed to compare the diagnostic performance. Contrast-to-noise ratio of the true lesions was also compared between the 2 sequences by using paired t tests. %26lt;br%26gt;Results: For lesions less than 3 mm, the area under curve and sensitivity achieved by T1-VISTA imaging were significantly greater than 3D-T1-FLAIR imaging. The contrast-to-noise ratio was also significantly greater with T1-VISTA imaging. %26lt;br%26gt;Conclusions: The contrast-enhanced T1-VISTA imaging is better suited than 3D-T1-FLAIR imaging, for detection of small metastases.

• 出版日期2013-2