News | May 06, 2009

Physicians Should Review Patient's CT Imaging History

May 6, 2009 - Physicians should review a patient's CT imaging history and cumulative radiation dose when considering whether to perform another CT exam, according to researchers at Brigham and Women's Hospital, Boston, MA, and Washington University School of Medicine, St. Louis, MO.

The study included 130 patients who had at least three emergency department visits within one year in which they had a CT scan of the neck, chest, abdomen or pelvis. "We gathered the recent CT exam histories for each of these patients and found that half had undergone ten or more CT scans in the previous eight years, up to a maximum of 70 CT scans," said Aaron Sodickson, M.D., PhD. "Using typical dose values and standard risk estimation methods, we calculated that half of our group had accrued additional radiation-induced cancer risks above baseline greater than 1 in 110, up to a maximum of 1 in 17."

"A patient's cumulative risk of radiation-induced cancers is believed to increase with increasing cumulative radiation dose. The level of risk is further increased for patients scanned at young ages and is in general greater for women than for men. There is no absolute threshold, however, and the potential risks of radiation induced cancer must be balanced against the expected clinical benefits of the CT scan for the patient's particular scenario," he said.

"CT is a tremendously valuable clinical tool in a wide variety of settings and disease processes, and as a result CT utilization has grown rapidly in recent years. Continued attention will be needed to keep radiation risks in check through a combination of technological advances, optimized imaging techniques, appropriateness criteria and patient-specific risk/benefit assessments," said Dr. Sodickson.

This study appears in the April issue of the American Journal of Roentgenology.

For more information: www.arrs.org

Related Content

Hospital for Special Surgery Invests in Sectra Orthopedic 3-D Planning Software
News | Orthopedic Imaging | January 18, 2018
January 18, 2018 – International medical imaging IT and cybersecurity company Sectra announces that Hospital for Spec
Philips Introduces Technology Maximizer Program for Imaging Equipment Upgrades
Technology | Imaging | January 17, 2018
January 17, 2018 — Philips recently announced the launch of Technology Maximizer, a cross-modality program designed t
Fat Distribution in Women and Men Provides Clues to Heart Attack Risk
News | Women's Health | January 11, 2018
January 11, 2018 – It’s not the amount of fat in your body but where it is stored that may increase your risk for hea
Emergency Radiologists See Inner Toll of Opioid Use Disorders

Rates of Imaging Positivity for IV-SUDs Complications. Image courtesy of Efren J. Flores, M.D.

News | Clinical Study | January 11, 2018
January 11, 2018 – Emergency radiologists are seeing a high prevalence of patients with complications related to opio
Minimally Invasive Treatment Provides Relief from Back Pain

Lumbar spine MRI showing disc herniation and nerve root at baseline and one month after treatment

News | Interventional Radiology | January 11, 2018
The majority of patients were pain free after receiving a new image-guided pulsed radiofrequency treatment for low back...
CT Shows Enlarged Aortas in Former Pro Football Players

3-D rendering from a cardiac CT dataset demonstrating mild dilation of the ascending aorta.

News | Computed Tomography (CT) | January 11, 2018
Former National Football League (NFL) players are more likely to have enlarged aortas, a condition that may put them at...

Size comparison between 3-D printed prosthesis implant and a penny.

News | 3-D Printing | January 11, 2018
January 11, 2018 — Researchers using...
BlueCross BlueShield Companies in Eight States Issue Positive Medical Policies for HeartFlow FFRct Analysis
News | CT Angiography (CTA) | December 28, 2017
HeartFlow Inc. announced that Health Care Service Corp. (HCSC), which operates Blue Cross and Blue Shield plans in five...
Artificial intelligence was the number one topic in radiology in 2017.

Artificial intelligence was the number one topic of interest in radiology in 2017, based on the most popular articles and videos on ITN in 2017.

Feature | Imaging | December 28, 2017
The Imaging Technology News (ITN) website had another record year with more than 1.25 million page views in 2017.
Median Technologies Collaborating With Chinese Hospital for Lung Cancer Screening Programs. Dave Fornell
News | Lung Cancer | December 22, 2017
Median Technologies recently announced a research collaboration agreement with Xingtai People's Hospital, Xingtai City...
Overlay Init