Angled gantry technique reduced breast radiation exposure by 50 percent

Dec 04, 2008

A novel angled gantry approach to coronary CT angiography reduced radiation exposure to the breast by more than 50%, according to Thomas Jefferson University researchers.

Ethan Halpern, M.D., associate professor of Radiology at Jefferson Medical College of Thomas Jefferson University in Philadelphia, presented the research at the 94th Scientific Assembly and Annual Meeting of the Radiological Society of North America.

"Radiation dose to the breast during coronary CT is especially a concern for young women as the dose may increase the risk for breast cancer," Dr. Halpern said. "Physicians are working diligently to reduce the patient radiation dose related to coronary CT."

Dr. Halpern and colleagues retrospectively reviewed 100 consecutive coronary CT angiography images that were obtained with a 64 detector helical scanner. They evaluated sagital images to: 1) define the position of the breasts and the gantry angulation required to perform a CT examination parallel to the long axis of the heart; and 2) determine the reduction in breast exposure to radiation that might be accomplished by imaging the heart with an angled gantry acquisition.

The standard axial imaging plane for coronary CT angiography required a 6.5cm.
± 1.8 cm. overlap with the lower breast. The overlap with the lower breast using the angled scan was reduced in half to 3.2 cm ± 1.6 cm (P<0.001).

"Angled gantry is a feasible technique for coronary CT angiography that reduces radiation exposure to the breast by 50%," Dr. Halpern said. "These results warrant the development of machines that can perform this technique."

Source: Thomas Jefferson University

Explore further: Combined brachytherapy techniques should be 'benchmark' for cervical cancer treatment

Related Stories

Classroom acoustics for architects

1 hour ago

The Acoustical Society of America (ASA) has published a free online booklet for architects to aid in the application of ANSI/ASA S12.60-2010/Part 1-American National Standard Acoustical Performance Criteria, Design Requirements, ...

Recommended for you

Self-reported health predicts survival in breast cancer

19 hours ago

(HealthDay)—For older women with breast cancer, low self-rated health (SRH) and limited walking ability predict worse all-cause survival at five and 10 years, according to a study published in the April ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.