Watanabe Y, Takagi H, Oba M, Okubo M, Niwa T
Department of Internal Medicine, Ogaki Municipal Hospital, Gifu, Japan.
Neuroradiology. 1993;35(6):412-5. doi: 10.1007/BF00602818.
We performed single photon emission computed tomography with N-isopropyl[123I]-p-iodoamphetamine in 22 normal volunteers (mean age, 68.3 +/- 9.5 years) and 190 patients with unilateral cerebral infarcts (66.1 +/- 11.4 years). We then compared visual and semiquantitative assessment of the left/right ratio of the early images. Cerebral blood flow in the patients with cerebral infarcts was compared with data from normal volunteers. An abnormal left/right ratio was recognized in 110 of 136 (81%) patients in whom X-ray computed tomography (CT) showed an abnormality, while visual inspection revealed abnormalities in only 99 (73%). In 54 patients no abnormality on CT, an abnormal left/right ratio was found in 28 (52%), and visual abnormalities in only 9 (17%). Altogether, the left/right ratio was abnormal in 138 of 190 (73%) patients, and abnormalities were detected visually in 108 (57%). Of 95 patients, 56 (59%) showed markedly larger lesions using the left/right ratio method than with the visual method.
我们对22名正常志愿者（平均年龄68.3±9.5岁）和190名单侧脑梗死患者（66.1±11.4岁）进行了N-异丙基[123I]-对碘安非他明单光子发射计算机断层扫描。然后，我们比较了早期图像左右比值的视觉评估和半定量评估。将脑梗死患者的脑血流量与正常志愿者的数据进行了比较。在136例经X线计算机断层扫描（CT）显示异常的患者中，有110例（81%）的左右比值异常，而视觉检查仅发现99例（73%）异常。在54例CT检查无异常的患者中，28例（52%）的左右比值异常，而视觉异常仅9例（17%）。总体而言，190例患者中有138例（73%）的左右比值异常，视觉检查发现108例（57%）异常。在95例患者中，56例（59%）使用左右比值法显示的病变明显大于视觉法。
