Jarad N A, Underwood S R, Rudd R M
London Chest Hospital, U.K.
Respir Med. 1993 May;87(4):309-12. doi: 10.1016/0954-6111(93)90029-y.
Magnetic resonance imaging was performed in four male asbestos workers in whom the chest radiograph revealed pleural but not pulmonary or pericardial disease. Patients underwent thoracic multislice spin echo imaging, with measurement of left and right ventricular volumes at end-diastole and end-systole, and a study of the flow in the superior vena cava as an indirect measure to the filling of the right ventricle. Patients also underwent respiratory function tests and high-resolution computed tomography (HRCT). Magnetic resonance, but not HRCT, showed pericardial thickening in two patients. Magnetic resonance demonstrated reduced diastolic flow in the superior vena cava in one patient, reflecting impaired right ventricular filling. All other magnetic resonance measurements of cardiac function were normal. HRCT demonstrated mild asbestosis in three patients in which neither the chest radiograph nor magnetic resonance showed signs of parenchymal disease, and pericardiac calcification without thickening in one patient. It is concluded that magnetic resonance is superior to HRCT in identifying pericardial thickening, but that HRCT is superior to magnetic resonance in identifying asbestos-related pleural and pulmonary disease.
对4名男性石棉工人进行了磁共振成像检查，这些人的胸部X光片显示有胸膜疾病，但无肺部或心包疾病。患者接受了胸部多层自旋回波成像，测量了舒张末期和收缩末期的左右心室容积，并对 superior vena cava（上腔静脉）的血流进行了研究，作为间接评估右心室充盈情况的指标。患者还接受了呼吸功能测试和高分辨率计算机断层扫描（HRCT）。磁共振成像显示有2名患者存在心包增厚，但HRCT未显示。磁共振成像显示1名患者上腔静脉舒张期血流减少，反映右心室充盈受损。心脏功能的所有其他磁共振测量结果均正常。HRCT显示3名患者有轻度石棉肺，而胸部X光片和磁共振成像均未显示实质疾病迹象，1名患者有心包钙化但无增厚。结论是，在识别心包增厚方面，磁共振成像优于HRCT，但在识别与石棉相关的胸膜和肺部疾病方面，HRCT优于磁共振成像。
