CTA
Also written as: CTA — Computed Tomography Angiography
Computed tomography angiography, a non-invasive imaging technique combining CT scanning with contrast agents to visualize blood vessels.
Full Definition
Computed tomography angiography (CTA) is a sophisticated imaging modality that combines high-resolution computed tomography with intravenous contrast enhancement to provide detailed visualization of blood vessels throughout the body. The technique involves rapid acquisition of thin-section CT images during peak arterial contrast enhancement, followed by computer processing to create multiplanar reconstructions and three-dimensional angiographic images. CTA offers several advantages including non-invasive nature, rapid acquisition, excellent spatial resolution, and the ability to evaluate both vessel lumens and surrounding structures. It has become a valuable diagnostic tool in evaluating coronary artery disease, pulmonary embolism, aortic pathology, and cerebrovascular disease, often serving as an alternative to conventional angiography for diagnostic purposes.
Usage
Usage note: Always capitalize as CTA when abbreviated.
In Context
- "CTA of the chest revealed multiple pulmonary emboli in segmental arteries." — Radiology report
- "Coronary CTA showed significant stenosis in the left anterior descending artery." — Cardiac imaging report