Suga K, Nishigauchi K, Kume N, Miura G, Takano K, Koike S, Matsunaga N, Fujii T, Matsuzaki M
Department of Radiology, Yamaguchi University School of Medicine, Japan.
Clin Nucl Med. 1996 Aug;21(8):595-601. doi: 10.1097/00003072-199608000-00001.
An initial attempt to superimpose in-111-labeled platelet SPECT over CT/MRI in two patients with intracardiac thrombus is presented. One patient was a 65-year-old woman with a history of mitral and tricuspid valve replacement. This patient had a large thrombus measuring 74 x 43 x 34 mm in the right atrium. Fusion imaging with CT showed increased in-111 activity on the surface of the thrombus, which was visualized as circular activity on a planar image. The other patient was a 72-year-old woman who had a thrombus measuring 17 x 14 x 12 mm at the cardiac apex. Planar imaging showed two discrete areas of abnormal in-111 activity. Superimposition of the SPECT image over MR revealed that one of these areas corresponded to the small thrombus, whereas the other related to a previous subendomyocardial biopsy. In both patients, the activity ratio of the abnormal in-111 accumulation versus the cardiac chamber on SPECT was greater than that on planar images. The correlation of in-111 platelet SPECT and CT/MRI was useful in accurately localizing the intracardiac thrombus.
本文介绍了对两名患有心内血栓的患者进行铟 - 111标记血小板单光子发射计算机断层扫描（SPECT）与计算机断层扫描（CT）/磁共振成像（MRI）叠加的初步尝试。一名患者是一位65岁的女性，有二尖瓣和三尖瓣置换史。该患者右心房有一个大小为74×43×34mm的大血栓。与CT的融合成像显示血栓表面铟 - 111活性增加，在平面图像上表现为圆形活性。另一名患者是一位72岁的女性，在心尖处有一个大小为17×14×12mm的血栓。平面成像显示两个离散的铟 - 111异常活性区域。SPECT图像与MR叠加显示，其中一个区域对应于小血栓，而另一个区域与先前的心内膜下活检有关。在两名患者中，SPECT上异常铟 - 111积聚与心腔的活性比均大于平面图像上的活性比。铟 - 111血小板SPECT与CT/MRI的相关性有助于准确地定位心内血栓。
