RESUMO
Imaging studies play a critical role in the diagnosis and staging of lung cancer. CT and 18-fluorodeoxyglucose positron emission tomography CT (PET/CT) are widely and routinely used for staging and assessment of treatment response. Many radiologists still use MRI only for the assessment of superior sulcus tumours, and in cases where invasion of the spinal cord canal is suspected. MRI can detect and stage lung cancer, and this method could be an excellent alternative to CT or PET/CT in the investigation of lung malignancies and other diseases. This pictorial essay discusses the use of MRI in the investigation of lung cancer.
Assuntos
Neoplasias Pulmonares/diagnóstico , Imageamento por Ressonância Magnética/normas , Tomografia Computadorizada por Raios X/normas , Fluordesoxiglucose F18 , Humanos , Neoplasias Pulmonares/secundário , Imageamento por Ressonância Magnética/métodos , Estadiamento de Neoplasias , Tomografia por Emissão de Pósitrons , Guias de Prática Clínica como Assunto , Compostos Radiofarmacêuticos , Reprodutibilidade dos Testes , Tomografia Computadorizada por Raios X/métodosRESUMO
Pulmonary embolism (PE) is the third most common acute cardiovascular disease after myocardial infarction and stroke, and results in thousands of deaths each year. Improvements in MRI accuracy are ongoing with the use of parallel imaging for angiography techniques and pulmonary perfusion. This, associated with other potential advantages of MRI (e.g. a radiation free method and better safety profile of MR contrast media), reinforces its use. The aim of this paper is to perform a pictorial review of the principal findings of MRI in acute PE. Acute PE can manifest itself as complete arterial occlusion and the affected artery may be enlarged. We report the main vascular and parenchymal signs, and an overview of current literature regarding accuracy, limitations and technical aspects is provided.