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Radiation Dose to Adults From Common Imaging Examinations. For the most current information, visit radiologyinfo.org. 05.22. Note: This chart simplifies a highly complex topic for patients’ informational use. The effective doses are typical values for an average-sized adult.
Here are some approximate comparisons of background radiation and effective radiation dose in adults for several radiology procedures described on this website. These values can vary greatly, depending on the size of the patient and the type of imaging technology being used.
Computed tomography (CT) of the sinuses uses special x-ray equipment to evaluate the paranasal sinus cavities – hollow, air-filled spaces within the bones of the face surrounding the nasal cavity. CT scanning is painless, noninvasive and accurate.
29 Νοε 2018 · A CT Sinus scan requires ~0.7 mSv or radiation equal to about 7 chest x-rays. A CT Neck scan requires ~6.0 mSv or radiation equal to about 60 chest x-rays. A CT Head or Brain scan requires ~2 mSv or radiation equal to about 20 chest x-rays.
How much radiation is delivered in tests like CT scans and x-rays? The graph below shows the range of radiation exposure a patient may receive from different medical exams. The dotted line indicates the most likely dose.
3 Μαρ 2023 · In comparison, the mean exposure associated with a standardized CT scan is in the range of 3 to 7 mSv; however, it can be significantly higher, depending on the CT protocol and the complexity of the examination (table 1).
To develop diagnostic reference levels (DRLs) and achievable doses (ADs) for the 10 most common adult computed tomographic (CT) examinations in the United States as a function of patient size by using the CT Dose Index Registry. Materials and Methods.
