Feature | January 12, 2012

Experts Offer Pointers for Optimizing Radiation Dose in Pediatric CT

January 12, 2012 — An article in the January issue of the Journal of the American College of Radiology summarizes methods for radiation dose optimization in pediatric computed tomography (CT) scans. Approximately seven to eight million CT examinations are performed for various pediatric clinical indications per year in the United States.

Justification of clinical indication is the most important aspect of reducing radiation dose with CT scanning. A substantial number of pediatric CT scans lack appropriate justification or can be replaced with other imaging modalities with lower or no ionizing radiation, such as radiography, ultrasonography and magnetic resonance imaging (MRI), which can provide similar diagnostic information for some clinical conditions. 

“When not clinically indicated, not performing a CT examination is certainly the best radiation dose reduction strategy. However, when a CT scan is indicated, there are steps that can be taken to optimize the dose that children receive. It’s important that all imaging providers take these steps as indicated,” said Mannudeep K. Kalra, M.D., author of the article. 

Investigators from Massachusetts General Hospital, Harvard Medical School, in Boston, and Johns Hopkins University in Baltimore, reviewed practical strategies for reducing radiation dose associated with pediatric CT examinations. “Radiation dose reduction in children starts with the optimization of pediatric CT protocols,” said Mahadevappa Mahesh, MS, Ph.D., author of the article. “CT protocols should be strictly optimized on the basis of body size, body region, clinical indication and the availability of prior imaging.”

Additional steps include using a lower tube current and voltage, restricting the scan length to include only the region of interest and using new techniques of image post-processing and reconstruction.   

“Children are more sensitive to radiation-induced risks and need special attention. Therefore, while designing CT protocols, it is crucial to keep clinical indications, weight and prior available imaging in mind to optimize radiation dose,” said Mahesh.

 For more information: www.jacr.org, www.imagewisely.org, www.imagegently.org

Related Content

Trial Data Shows Positive Predictive Results for Boston Scientific HeartLogic Heart Failure Diagnostic
News | Heart Failure| October 20, 2017
October 20, 2017 — Boston Scientific announced new data from the Multisensor Chronic Evaluation in Ambulatory Heart F
Cardiovascular Risk Significantly Higher in Women With Fatty Liver Disease
News | Womens Healthcare| October 20, 2017
Nonalcoholic fatty liver disease (NAFLD) is associated with significantly higher risk of subsequent cardiovascular...
Pregnancy-Related Heart Failure Strikes Black Women Twice as Often as Other Races
News | Womens Healthcare| October 19, 2017
African American women were found to be twice as likely to be diagnosed with peripartum cardiomyopathy as compared to...
MRI May Predict Neurological Outcomes for Cardiac Arrest Survivors
News | Sudden Cardiac Arrest| October 18, 2017
Magnetic resonance imaging (MRI)-based measurements of the functional connections in the brain can help predict long-...
Xarelto Significantly Reduces Major Cardioavascular Events in Stable CAD and PAD Patients
News | Pharmaceuticals| October 18, 2017
October 18, 2017 — Results from the pivotal Phase 3 COMPASS study found that the...
First Patient Enrolled in U.S. Arm of ALIVE Pivotal Heart Failure Trial
News | Heart Failure| October 17, 2017
October 17, 2017 — BioVentrix Inc. recently announced enrollment of the first patient in the U.S.
Low Mortality and Stroke Risks Displayed for Minimally Invasive Aortic Valve Replacements
News | Heart Valve Technology| October 11, 2017
An analysis of more than 1,000 minimally invasive aortic valve replacements and more than 400 additional associated...
New Evaluation Sends Low-Risk ER Chest Pain Patients Home Sooner
News | Cardiac Diagnostics| October 10, 2017
A new evaluation to determine whether emergency room patients with chest pain can go home and follow up with their...
Medis Releases QAngio CT v3.1
Technology | Computed Tomography (CT)| October 09, 2017
Medis has released a new version of its QAngio CT (computed tomography), which can now be launched from the Medis Suite...
News | Pharmaceuticals| October 04, 2017
October 4, 2017 — MyoKardia Inc.
Overlay Init