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Radiology

Interventional Radiology

Interventional radiology is one of the more recent developments in radiology. As a subspecialty, it has evolved from a purely diagnostic application to a therapeutic specialty involving such procedures as balloon dilation of arteries, drainage of abscesses, removal of gallstones, and treatment of benign and malignant structures.

Interventional radiologists, who often work closely with surgeons, use a number of imaging tools to perform procedures like image-guided needle biopsy (removal of tissue or fluids) and percutaneous (through the skin) needle biopsy of thoracic lesions. These procedures rely heavily on the development of imaging technologies like CT and various instruments such as catheters and guide wires. Advantages of interventional radiology over surgery include reduced need for anesthesia, shorter time to perform procedures, and improved therapeutic results.


Resources

Books

Selman, Joseph. The Fundamentals of X ray and Radium Physics. Springfield: Charles C. Thomas, 1994.

Periodicals

Evans, Ronald G. "Radiology." Journal of the American Medical Association (June 1, 1994): 1714-1715.

Hiatt, Mark. "Computers and the Revolution in Radiology." Journal of the American Medical Association (April 5, 1995): 1062.

Raichle, Marcus E. "Visualizing the Mind." Scientific American (April 1994): 58-62.


David Petechuk

KEY TERMS

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Radiant

—Anything that produces rays, such as light or heat.

Radioisotopes

—An unstable isotope that emits radiation when it decays or returns to a stable state.

Radionuclide

—Radioactive or unstable nuclide.

Radiopaque

—Anything that is opaque or impenetrable to x rays.

Radiotherapy

—The use of x rays or other radioactive substances to treat disease.

Additional topics

Science EncyclopediaScience & Philosophy: Quantum electronics to ReasoningRadiology - The X Ray: Fundamental Building Block Of Radiology, How The X Ray Works, Ultrasound