Ono N, Hirai K, Ijyuin H, Itano S, Noguchi H, Sakata K, Aoki Y, Aritaka T, Abe H, Tanikawa K
Second Department of Medicine, Kurume University School of Medicine, Japan.
Clin Imaging. 1995 Oct-Dec;19(4):229-33. doi: 10.1016/0899-7071(94)00019-9.
Magnetic resonance imaging (MRI) and computed tomography (CT) were performed in four patients with thorotrastosis. On CT scan, Thorotrast (thorium oxide) deposition was shown as high-density areas in the liver and spleen and the abdominal lymph nodes. These deposits were not found on MRIs. Splenic volume was significantly small due to atrophy. The contrast-noise ratio in the spleen on T1-weighted images was significantly lower. Thorotrast deposition does not affect MRI appearance; therefore it may be useful for the early detection of malignant tumors as a complication of thorotrastosis.
对4例钍造影剂沉着病患者进行了磁共振成像（MRI）和计算机断层扫描（CT）检查。在CT扫描中，钍造影剂（氧化钍）沉积表现为肝脏、脾脏和腹部淋巴结中的高密度区域。这些沉积物在MRI上未被发现。由于萎缩，脾脏体积明显缩小。脾脏在T1加权图像上的对比噪声比显著降低。钍造影剂沉积不影响MRI表现；因此，作为钍造影剂沉着病的并发症，它可能有助于早期发现恶性肿瘤。
