Background/Objectives:Contrast-enhanced computed tomography (CT) is the standard radiologic examination for evaluating the extent of mediastinal tumors. If tumor infiltration into the large central thoracic vessels, the pericardium, or the myocardium is suspected, cine magnetic resonance imaging (cine-MRI) can provide additional valuable information.Methods:We conducted a retrospective study of patients with mediastinal tumors who were staged with CT, cine-MRI, and a T1-weighted turbo spin echo (T1TSE) prior to surgical resection. Imaging was re-evaluated regarding tumor infiltration into the pericardium, myocardium, superior vena cava, aorta, pulmonary arteries, and atria and compared with intraoperative findings and postoperative histopathological reports (gold standard). Unclear CT findings were further investigated.Results:Forty-seven patients (29 female and 18 male patients; median age: 58 years) met the inclusion criteria. Cine-MRI was able to predict infiltration of the aorta in 86%, pulmonary arteries in 85%, and atria in 80% of unclear CT cases. Aortic tumor infiltration in unclear CT cases was significantly more often correctly diagnosed with cine-MRI than with T1TSE sequence.Conclusions:Additional cine-MRI is of crucial benefit in unclear CT cases. We recommend performing cine-MRI if infiltration into the large central vessels and atria is suspected. T1TSE sequence is of very limited additional value.
背景/目的：对比增强计算机断层扫描（CT）是评估纵隔肿瘤范围的标准放射学检查方法。若怀疑肿瘤侵犯胸腔大血管、心包或心肌，电影磁共振成像（cine-MRI）可提供额外的关键信息。方法：我们对一组纵隔肿瘤患者进行回顾性研究，这些患者在手术切除前均接受了CT、cine-MRI及T1加权快速自旋回波（T1TSE）序列的术前分期评估。通过重新评估影像资料中肿瘤对心包、心肌、上腔静脉、主动脉、肺动脉及心房的侵犯情况，并与术中探查结果及术后组织病理学报告（金标准）进行对比。针对CT检查结果不明确的病例进行了深入分析。结果：共47例患者（女性29例，男性18例；中位年龄58岁）符合纳入标准。在CT检查结果不明确的病例中，cine-MRI对主动脉侵犯的预测准确率达86%，肺动脉达85%，心房达80%。对于CT不明确病例中的主动脉肿瘤侵犯，cine-MRI的诊断准确率显著高于T1TSE序列。结论：cine-MRI对CT检查结果不明确的病例具有至关重要的辅助诊断价值。若怀疑肿瘤侵犯胸腔大血管及心房，建议进行cine-MRI检查。T1TSE序列的附加诊断价值则非常有限。
肿瘤(癌症)患者之家