Navigation Links
CT radiation dose report released by American Association of Physicists in Medicine
Date:2/15/2008

College Park, MD (February 15, 2008) -- Aiming to promote the best medical imaging practices nationwide and help ensure the health and safety of the millions of people who undergo computed tomography (CT) scans each year in the United States, the American Association of Physicists in Medicine (AAPM) has issued a CT radiation dose management report this month recommending standardized ways of reporting doses and educating users on the latest dose reduction technology.

AAPM is the premiere professional association of medical physicists and includes both scientists and board-certified health professionals who care for patients.

Targeted at radiologists, medical physicists, and other medical professionals, the report outlines the best ways to measure, manage, and prescribe radiation dosages. It also gives an overview of ways that doctors can optimize modern CT scanners to get the most bang for the buck -- reducing to a bare minimum the amount of radiation to which patients are exposed while still allowing them to benefit from the technique's life-saving ability to image inside the human body.

"The medical applications of CT have grown tremendously in the last decade as the technology had become more and more sophisticated," says Mayo Clinic Medical Physicist Cynthia McCollough, who was chair of the AAPM Task Group that authored the report. "In the era of increasingly personalized medicine, the report provides a roadmap for doctors and medical physicists to tailor the CT radiation dosages to individuals."

The report was generated by a committee of medical physicists with special expertise in CT technology and its clinical uses. It can be downloaded from the AAPM website (see: http://www.aapm.org/pubs/reports/RPT_96.pdf).

CT SCANS AND RADIATION

The benefits of CT scans are enormous, and the technology has revolutionized medicine in the last generation because it can provide cross-sectional snapshots deep inside someone's body with unprecedented clarity. These images help doctors diagnose unseen illnesses and injuries, and they guide treatment for millions of people a year in the United States.

In the last few years, reports in the medical literature and in the popular press have challenged public perceptions of CT scans by raising questions of risk related to the fact that CT scanners use X rays, which in high doses can damage the DNA inside cells.

However, says McCollough, the benefits of receiving a medically justified CT scan far outweighs the risk associated with the low levels of radiation used. To put this into perspective, the U.S. Food and Drug Administration (FDA) considers the risk of absorbed X rays from CT scans to be very small (see: http://www.fda.gov/cdrh/ct/risks.html).

Even so, the FDA recommends avoiding unnecessary exposure to radiation during medical procedures, especially for children. The FDA published a public health notice in 2001, calling for pediatric CT scans to be tailored to the specific needs and smaller sizes of children and only administered when appropriate (see http://www.fda.gov/cdrh/safety/110201-ct.html).

While they are not regulatory bodies, the AAPM and allied organizations like the American College of Radiology (ACR) play important roles in helping to achieve the FDAs goal of keeping the radiation dose as low as reasonably achievable, consistent with the medical need, by making recommendations and providing accreditation of CT scan facilities. This is essential because while the FDA is responsible for regulating CT scanning equipment, it does not actually regulate the CT scans themselves. Oversight of the use of X-ray technology in the United States is regulated by individual states' laws.

The ACR plays an important role in guaranteeing the quality and safety of CT scanning through its voluntary accreditation program. To achieve ACR accreditation, CT facilities must demonstrate both clinical and technical competency, as well as meet requirements for staff training and quality assurance. Only sites with sufficient image quality and appropriate radiation doses can receive ACR accreditation. While the program is voluntary, many insurers require that facilities be accredited in order to qualify for reimbursement.

Similarly, the AAPM contributes to the safety and quality of CT imaging by providing reports like the one just published, which gives the most current standards for CT dose measurement techniques and discusses how facilities can reduce radiation dosages by using new technical features that automatically adjust the radiation exposure according to each patient's size.

The information contained in this report is crucial, says McCollough, because it can help medical practitioners take full advantage of sophisticated CT technology. "Essentially, all modern CT systems can be equipped with automatic exposure control systems. These tools help to ensure that no patient receives more radiation dose than they need. We believe that this report equips users to properly describe and manage CT dose levels."


'/>"/>

Contact: Jason Socrates Bardi
jbardi@aip.org
301-209-3091
American Institute of Physics
Source:Eurekalert

Related medicine news :

1. Informational handout key to giving parents a better understanding of CT radiation risks
2. Prophylactic cranial irradiation in small cell lung cancer significantly increases survival
3. Different method of evaluating the urinary tract system reduces radiation dose
4. Radiation and drug combo helps boost efficacy of lung cancer treatment
5. Nucletron Announces Management Buy-Out to More Effectively Meet the Demands of Its Customers and the Radiation Therapy Community
6. Radiation therapy technique reduces length of prostate cancer treatment
7. Radiation therapy technique reduces length of prostate cancer treatment
8. Jefferson radiation oncologists use real-time system to plant seeds against cancer
9. Radiation Therapy Services Acquires North Carolina Facility
10. NASA, NSBRI Select 17 Proposals in Space Radiation Research
11. Breast Cancer Radiation Wont Hurt Immune Health
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... ... June 26, 2016 , ... PawPaws brand pet supplements ... was developed to enhance the health of felines. The formula is all-natural and is ... herbs in the PawPaws Cat Kidney Support Supplement Soft Chews are Astragalus ...
(Date:6/25/2016)... , ... June 25, 2016 , ... Austin residents seeking ... American College of Mohs Surgery and to Dr. Russell Peckham for medical and surgical ... effective treatment for skin cancer. The selective fellowship in Mohs Micrographic Surgery completed by ...
(Date:6/25/2016)... ... June 25, 2016 , ... As a lifelong Southern Californian, Dr. Omkar Marathe ... from the David Geffen School of Medicine at UCLA. He trained in Internal Medicine ... his fellowship in hematology/oncology at the UCLA-Olive View-Cedars Sinai program where he had the ...
(Date:6/24/2016)... , ... June 24, 2016 , ... A recent ... most people are unfamiliar with. The article goes on to state that individuals are ... many of these less common operations such as calf and cheek reduction. The Los ...
(Date:6/24/2016)... ... June 24, 2016 , ... The Pulmonary Hypertension Association (PHA) ... will receive two significant new grants to support its work to advance research ... anniversary by recognizing patients, medical professionals and scientists for their work in fighting ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... OAKLAND, N.J. , June 24, 2016 /PRNewswire/ ... in the design, development and manufacturing of collagen ... and regeneration announced today that Bill Messer ... Sales and Marketing to further leverage the growing ... surgery medical devices. Bill joins the ...
(Date:6/24/2016)... , June 24, 2016 ... the "Structural Electronics 2015-2025: Applications, Technologies, Forecasts" ... In-Mold Electronics, Smart Skin, Structural ... Structural electronics involves electronic and/or ... protective structures, replacing dumb structures such as vehicle ...
(Date:6/24/2016)... Research and Markets has announced the addition of the ... to their offering. ... World Market for Companion Diagnostics covers the world market for ... report includes the following: , World IVD ... (N. America, EU, ROW), 2015-2020 , World IVD Companion ...
Breaking Medicine Technology: