Ashikaga R
Department of Radiology, Kinki University School of Medicine.
Nihon Igaku Hoshasen Gakkai Zasshi. 1996 Dec;56(14):1045-9.
To study the utility of fluid attenuated inversion recovery (FLAIR)MR images in the evaluation of traumatic head injury, 56 patients with traumatic head injuries were examined with long TR/TE spin-echo(SE)sequences and FLAIR sequences. In 40 of them, long TR/short TE images were added to those sequences. Careful readings of MR images were done by two well-trained neuroradiologists. The chi square test was used for statistical evaluation of our results. The relative sensitivities of FLAIR images were significantly better than those of long TR/TE, long TR/short TE images for the detection of diffuse axonal injury (p < 0.01), cortical contusion (p < 0.01), and subdural hematoma (p < 0.01) for long TR/TE, p < 0.05 for long TR/short TE). The number of cases of epidural hematoma and brainstem injury was too small for statistical significance to be determined. In 9 patients with corpus callosum injuries. FLAIR images demonstrated the lesions as abnormally high signal intensity in the septum pellucidum and fornix. Only sagittal FLAIR images could definitely discriminate the traumatic lesions of the fornix from the surrounding CSF. In addition, FLAIR images could easily discriminate DAI of the corpus callosum from CSF of the cavum velli interpositi. MR FLAIR images were found to be useful for detecting traumatic head injuries.
为研究液体衰减反转恢复（FLAIR）磁共振成像（MRI）在评估创伤性颅脑损伤中的应用价值，对56例创伤性颅脑损伤患者进行了长TR/TE自旋回波（SE）序列和FLAIR序列检查。其中40例患者在这些序列基础上增加了长TR/短TE图像。由两位训练有素的神经放射科医生仔细阅读MRI图像。采用卡方检验对结果进行统计学评估。对于弥漫性轴索损伤（p < 0.01）、脑皮质挫伤（p < 0.01）和硬膜下血肿（p < 0.01，长TR/TE序列；p < 0.05，长TR/短TE序列）的检测，FLAIR图像的相对敏感性显著优于长TR/TE、长TR/短TE图像。硬膜外血肿和脑干损伤的病例数过少，无法确定统计学意义。在9例胼胝体损伤患者中，FLAIR图像显示透明隔和穹窿部病变呈异常高信号强度。只有矢状位FLAIR图像能够明确区分穹窿部的创伤性病变与周围脑脊液。此外，FLAIR图像能够轻松区分胼胝体的弥漫性轴索损伤与中间帆腔的脑脊液。发现MR FLAIR图像对检测创伤性颅脑损伤有用。
