[MRI angiography of the thoracic vessels including coronary arteries: techniques and indications].
Because it is a non-invasive method, Magnetic Resonance Angiography has more and more indications in the thorax, particularly with the help of use of contrast media. Different types of sequences used (Cine-MR, Gradient-echo 2D and Gadolinium enhanced breath-hold and non breath-hold 3D) are described as well as acquisition parameters and reconstructions from natives images. Post-processing techniques (MIP, MPR, 3D Surface Rendering) and their limitations depending upon the region explored are explained. Major indications (congenital anomalies of the great vessels, aneurysms, dissections, post-operative studies, evaluation of coronary arteries) are illustrated and the role of MRA compared to the other invasive and non invasive modalities is discussed.
Didier
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Département de Radiologie, Hôpital Cantonal Universitaire de Genève, Suisse. didier@dim.hcuge.ch
D000784:Aortic Dissection / Q000175:diagnosis / Q000601:surgery; D001014:Aortic Aneurysm / Q000175:diagnosis / Q000601:surgery; D017545:Aortic Aneurysm, Thoracic / Q000175:diagnosis; D001017:Aortic Coarctation / Q000175:diagnosis; D001018:Aortic Diseases / Q000175:diagnosis*; D001807:Blood Vessel Prosthesis; D003331:Coronary Vessels / Q000033:anatomy & histology; D005682:Gadolinium; D006801:Humans; D007091:Image Processing, Computer-Assisted; D018810:Magnetic Resonance Angiography / Q000379:methods; D011655:Pulmonary Embolism / Q000175:diagnosis; D013909:Thorax / Q000098:blood supply*
D005682:Gadolinium