Tsuchiya K, Mizutani Y, Hachiya J
Department of Radiology, Kyorin University School of Medicine, Tokyo, Japan.
AJNR Am J Neuroradiol. 1996 Jun-Jul;17(6):1081-6.
To report our preliminary results in the application of a turbo fluid-attenuated inversion-recovery (FLAIR) MR technique to the diagnosis of intracranial tumors and to assess the clinical usefulness of this technique.
Thirty-four patients with various intracranial tumors were studies with MR imaging, including a turbo FLAIR sequence. FLAIR images were compared with images obtained with conventional spin-echo sequences.
Except for 2 lesions in 1 patients, tumor signal intensities on FLAIR images were consistent with those shown on T2-weighted spin-echo images. FLAIR images showed peritumoral edema more clearly than T2-Weighted and proton density-weighted images when the tumor itself was not hyperintense. In 8 of 23 patients in whom edema was associated with tumor, FLAIR images provided better definition between edema and tumor than did T2-weighted and proton density-weighted images. In 5 patients, FLAIR images depicted different signal intensity between cerebrospinal fluid and a cystic or necrotic component. In 20 of 22 patients, postcontrast FLAIR images showed contrast enhancement comparable to that seen on postcontrast T1-weighted images.
Turbo FLAIR images can supplement conventional spin-echo images in the diagnosis of intracranial tumors.
报告我们将涡轮液体衰减反转恢复（FLAIR）磁共振技术应用于颅内肿瘤诊断的初步结果，并评估该技术的临床实用性。
对34例患有各种颅内肿瘤的患者进行磁共振成像研究，包括涡轮FLAIR序列。将FLAIR图像与用传统自旋回波序列获得的图像进行比较。
除1例患者中的2个病变外，FLAIR图像上的肿瘤信号强度与T2加权自旋回波图像上显示的一致。当肿瘤本身不是高信号时，FLAIR图像比T2加权和质子密度加权图像更清楚地显示肿瘤周围水肿。在23例水肿与肿瘤相关的患者中，有8例FLAIR图像在水肿和肿瘤之间提供了比T2加权和质子密度加权图像更好的分辨。在5例患者中，FLAIR图像显示脑脊液与囊性或坏死成分之间的信号强度不同。在22例患者中的20例中，增强后FLAIR图像显示的对比增强与增强后T1加权图像上所见相当。
涡轮FLAIR图像在颅内肿瘤诊断中可补充传统自旋回波图像。
