Answer to Question #11493 Submitted to "Ask the Experts"

Category: Medical and Dental Patient Issues — Diagnostic X Ray and CT

The following question was answered by an expert in the appropriate field:


I had two computed tomography (CT) scans performed, one of the chest and one of the brain. Is the radiology department required to show effective radiation dose in millisieverts if asked by the patient? This center was accredited by the American College of Radiology. They told me that the dose was based on patient weight.


Regulations vary by state, so I cannot answer whether a radiology department is required to provide effective dose upon request. Dose is indeed based on patient size, but it is also based on machine parameters. The diagnostic medical physicist or medical health physicist at the radiology department should be able to provide an estimate of your effective dose from these CT scans.

Kent Lambert, CHP

Answer posted on 30 March 2016. The information posted on this web page is intended as general reference information only. Specific facts and circumstances may affect the applicability of concepts, materials, and information described herein. The information provided is not a substitute for professional advice and should not be relied upon in the absence of such professional advice. To the best of our knowledge, answers are correct at the time they are posted. Be advised that over time, requirements could change, new data could be made available, and Internet links could change, affecting the correctness of the answers. Answers are the professional opinions of the expert responding to each question; they do not necessarily represent the position of the Health Physics Society.