Suzuki T, Kakiuchi H, Sugiki S, Kawanishi M, Inoue S, Kakizaki D, Abe K, Amino S
Department of Radiology, Tokyo Medical College.
Nihon Igaku Hoshasen Gakkai Zasshi. 1995 Mar;55(4):260-2.
MRI of the brain using a fast SE sequence is often performed with a TR above 5000 msec, so there is a tendency for the signal of CSF to become too high. However, when cerebral atrophy is marked, small lesions of the brain parenchyma can be hard to detect. Therefore, we examined short-TR-T2-weighted images using a fast spin echo sequence. The 58 subjects included 33 men and 25 women, and cortical infarction was detected in five of them. On the short-TR-T2WI sequences, the infarct lesions were imaged as areas of higher signal intensity than cerebrospinal fluid, the signal of which was reduced. In cortical infarction cases, fluid-attenuated inversion recovery (FLAIR) images can detect the lesion more easily, but FLAIR sequences cannot be obtained with all MR equipment. Short-TR-T2WI, which readily yields images comparable to those of FLAIR, is an useful method.
使用快速自旋回波序列进行脑部MRI检查时，通常采用高于5000毫秒的TR，因此脑脊液信号有过高的趋势。然而，当脑萎缩明显时，脑实质的小病变可能难以检测到。因此，我们使用快速自旋回波序列检查了短TR-T2加权图像。58名受试者包括33名男性和25名女性，其中5人检测到皮质梗死。在短TR-T2WI序列上，梗死灶成像为信号强度高于脑脊液的区域，脑脊液信号降低。在皮质梗死病例中，液体衰减反转恢复（FLAIR）图像可以更容易地检测到病变，但并非所有MR设备都能获得FLAIR序列。短TR-T2WI很容易生成与FLAIR图像相当的图像，是一种有用的方法。
