Utility of ultrafast computed tomography in the detection of thoracic aortic aneurysms and dissections

The millisecond image acquisition time characteristic of the ultrafast computed tomography (UFCT) scanner makes it an ideal modality for evaluating patients with suspected vascular lesions of the thoracic aorta. Unlike conventional CT, the UFCT electron beam technology produces images with excellent resolution, minimal respiratory artifact, and superior vascular enhancement. This report discusses the (1) basic characteristics of the UFCT scanner as they relate to the imaging of the thoracic aorta, (2) UFCT appearances of uncomplicated and complicated aneurysms and dissections, (3) appropriate CT protocols used in the work-up of suspected thoracic aortic disease, and (4) strengths and weaknesses of other imaging modalities compared with UFCT.