* * *the performance of therapeutic or diagnostic procedures under the control of an appropriate imaging technique. Guidance is commonly by X-ray fluoroscopy, ultrasound, or computerized tomography, and recently also by magnetic resonance imaging. Procedures commonly performed include the placing of vascular catheters, drainage of fluid collections or abscesses, stenting of obstructions to the gastrointestinal tract or blood vessels, embolization, cryotherapy, and radiofrequency ablation. Imaging is also used in many forms of minimally invasive surgery. See angioplasty, cholangiography, percutaneous nephrolithotomy.
* * *the branch of radiology concerned with providing diagnosis and treatment of disease by a variety of percutaneous procedures performed under the guidance of radiologic imaging.
Medical dictionary. 2011.
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