Arakawa K
Department of Radiology, Asahikawa Medical College.
Nihon Igaku Hoshasen Gakkai Zasshi. 1994 Mar 25;54(4):235-44.
To elucidate the characteristics of alveolar hydatid disease on computed tomography (CT) and magnetic resonance imaging (MRI), a correlative radiologic-pathologic study was performed on fifteen rats after autopsy. The rate of lesion detection was higher for MRI (93%) than CT (77%). The preoperative CT scans of sixteen lesions in nine patients with surgically proved alveolar hydatid disease were reviewed retrospectively. Large lesions (> 5 cm in diameter) showed a soft tissue density area (50%), central necrosis with irregular thickened wall (33%), honeycomb appearance (50%) and calcification (100%). Small lesions (< 2 cm) showed only a small low density area. Confluent low density areas were pathognomonic for the early lesions. MR images were available in three patients. Enhanced MRI (SE 600/20) could show confluent low intensity areas and high intensity areas around the lesions caused by inflammation and edema, which could not be demonstrated well on CT. Metastatic lesions of lung and bone were also visualized on plain radiographs.
为阐明肺泡型包虫病在计算机断层扫描（CT）和磁共振成像（MRI）上的特征，对15只大鼠尸检后进行了相关的放射学-病理学研究。MRI的病变检出率（93%）高于CT（77%）。回顾性分析了9例经手术证实为肺泡型包虫病患者的16个病变的术前CT扫描结果。大病变（直径>5 cm）表现为软组织密度区（50%）、中央坏死伴不规则增厚壁（33%）、蜂窝状外观（50%）和钙化（100%）。小病变（<2 cm）仅表现为小低密度区。融合性低密度区是早期病变的特征性表现。3例患者有MR图像。增强MRI（SE 600/20）可显示病变周围由炎症和水肿引起的融合性低强度区和高强度区，CT上显示不佳。肺和骨的转移病变在平片上也可见。
