Ballada L, Fachinetti A, Minotto R, Fachinetti P, Dorizzi A, Roncari G, Belli I
Servizio di Medicina Nucleare, Presidio Ospedaliero Multizonale, Varese.
Radiol Med. 1990 Sep;80(3):325-8.
Fifty patients suffering from cerebral ischemic attacks, transient or not, were studied with both 99mTc HM-PAO single photon emission computed tomography (SPECT) and computed tomography (CT). In 31 patients both SPECT and CT showed pathologic areas, the max diameters of which were measured on CT images and SPECT orbitomeatal reconstructed sections, and then compared. We observed that: only SPECT images are positive for pathologic conditions in transient ischemic attacks and in the very early phases of infarctions; in recent infarctions (less than 15 days earlier) both SPECT and CT scans are positive but SPECT lesion areas are greater than CT ones; pathologic areas, with clear-cut outlines, having the same dimensions on both CT and SPECT images, are supposed to result from old static infarctions. A persistent perilesional hypoactive area on SPECT images means, in our opinion, a hypoperfusional area liable to new vascular troubles; in which case, medical/surgical therapy seems necessary.
对50例患有脑缺血发作（无论是否为短暂性）的患者进行了99mTc HM-PAO单光子发射计算机断层扫描（SPECT）和计算机断层扫描（CT）研究。在31例患者中，SPECT和CT均显示出病变区域，在CT图像和SPECT眶耳重建切片上测量其最大直径，然后进行比较。我们观察到：在短暂性脑缺血发作和梗死的极早期，只有SPECT图像对病理状况呈阳性；在近期梗死（早于15天内）中，SPECT和CT扫描均呈阳性，但SPECT病变区域大于CT病变区域；在CT和SPECT图像上具有相同尺寸且轮廓清晰的病变区域，推测是由陈旧性静止性梗死导致的。我们认为，SPECT图像上持续存在的病变周围低活性区域意味着存在易于发生新血管问题的灌注不足区域；在这种情况下，似乎有必要进行内科/外科治疗。
