PMID: 9179826Apr 1, 1997Paper

Helical CT angiography of the thoracic aorta

Journal of Thoracic Imaging
G D Rubin

Abstract

Five years after its introduction (11,36), spiral or helical CTA is being embraced as an important noninvasive tool for imaging the thoracic aorta and its branches. The high degree of accessibility and ease with which the studies are performed make it a viable alternative to aortography in the acute setting. Once the examiner is familiar with the principles of CTA, the acquisition phase of the examination can be completed in as little as 15 minutes, but it is critical that a thorough understanding of these principles guide the radiologist to maximize information gained by the technique. Several important challenges remain for CTA. First, the proliferation of image-processing workstations and software is improving our ability to exploit these CT data by allowing us to visualize them in novel ways (37) and create alternative renderings with greater ease and speed. Before relying on these alternative visualization techniques, their accuracy and pitfalls, and the incremental gain they achieve over interpretation of the primary transverse sections must be fully established. This requires that carefully designed studies with multiple blinded and independent reviewers isolate interpretative variations based on rendering technique alon...Continue Reading

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