Department of Radiology, Allgemeines Krankenhaus Celle, Celle, Germany.
J Thorac Imaging. 2013 May;28(3):171-7. doi: 10.1097/RTI.0b013e31828d40ee.
Ongoing technical developments have substantially improved the potential of magnetic resonance imaging (MRI) in the assessment of the pulmonary circulation. These developments includes improved magnet and hardware design, new k-space sampling techniques (ie, parallel imaging), and alternative contrast materials. With these techniques, not only can pulmonary vessels be visualized by MR angiography with high spatial resolution but also the perfusion of the lungs and its changes in relation to pulmonary thromboembolism (PE) can be assessed. Considering venous thromboembolism as a systemic disease, MR venography might be added for the diagnosis of underlying deep venous thrombosis. A unique advantage of MRI over other imaging tests is its potential to evaluate changes in cardiac function as a result of obstruction of the pulmonary circulation, which may have a significant impact on patient monitoring and treatment. Finally, MRI does not involve radiation, which is advantageous, especially in young patients. Over the years, a number of studies have shown promising results not only for MR angiography but also for MRI of lung perfusion and for MR venography. This review article summarizes and discusses the current evidence on pulmonary MRI for patients with suspected PE.
不断发展的技术极大地提高了磁共振成像（MRI）在评估肺循环中的潜力。这些进展包括改进的磁体和硬件设计、新的 K 空间采样技术（即并行成像）以及替代对比材料。有了这些技术，不仅可以通过磁共振血管造影术以高空间分辨率显示肺血管，还可以评估肺部灌注及其与肺血栓栓塞症（PE）的变化。考虑到静脉血栓栓塞症是一种全身性疾病，可能需要添加 MR 静脉造影术以诊断潜在的深静脉血栓形成。与其他成像测试相比，MRI 的一个独特优势是其评估肺循环阻塞导致的心脏功能变化的潜力，这可能对患者监测和治疗有重大影响。最后，MRI 不涉及辐射，这是有利的，尤其是在年轻患者中。多年来，许多研究不仅对磁共振血管造影术，而且对肺灌注 MRI 和 MR 静脉造影术都显示出了有前景的结果。这篇综述文章总结和讨论了目前关于疑似 PE 患者的肺部 MRI 的证据。
