Medical Radiation Doses

Radiation Dose from X-Ray and CT Exams

https://www.radiologyinfo.org/en/info/safety-xray

Naturally occurring "background" radiation. We are exposed to natural sources of radiation all the time. According to recent estimates, the average person in the …

Radiation Therapy for Cancer - NCI - National Cancer …

https://www.cancer.gov/about-cancer/treatment/types/radiation-therapy

Radiation therapy kills cancer cells or slows their growth by damaging their DNA. Credit: National Cancer Institute. Radiation therapy (also called radiotherapy) is a …

Radiation Dose to Adults From Common Imaging …

https://www.acr.org/-/media/ACR/Files/Radiology-Safety/Radiation-Safety/Dose-Reference-Card.pdf

imaging practices. It is also important to note that doses given to pediatric patients will vary significantly from those given to adults, since children vary in size. Patients with radiation …

Radiation Sources and Doses | US EPA

https://www.epa.gov/radiation/radiation-sources-and-doses

Radiation risk from medical imaging

https://www.health.harvard.edu/cancer/radiation-risk-from-medical-imaging

The atomic blast isn't a perfect model for exposure to medical radiation, because the bomb …

Radiation Therapy Dosage - News-Medical.net

https://www.news-medical.net/health/Radiation-Therapy-Dosage.aspx

Standard dose. Gray (Gy) is the unit used to measure the total amount of radiation that the patient is exposed to. This can also be recorded as centigray (cGy), …

Radiation Quantities and Units | FDA

https://www.fda.gov/radiation-emitting-products/medical-x-ray-imaging/radiation-quantities-and-units

equivalent dose (in Sv) = absorbed dose (in Gy) x radiation weighting factor. In the older system of units, equivalent dose was described by the unit rem and 1 Sv equals 100 rem …

Health Effects of Radiation | Radiation

https://www.cdc.gov/nceh/radiation/health.html

Factors that Affect Dose. A dose received over a long period of time is less harmful than the same dose received all at once. A dose to a part of the body is less harmful than a …

Doses from Medical Radiation Sources - Health Physics …

https://hps.org/hpspublications/articles/dosesfrommedicalradiation.html

As noted above, the tables below give dose estimates for typical diagnostic radiology exams. For comparison, we all receive about 3 mSv of exposure annually to natural …

Radiation Dose: Compare the Amounts From Imaging Exams …

https://blog.radiology.virginia.edu/radiation-doses/

Having a medical imaging exam that uses radiation, like an x-ray or CT scan, can be frightening. Some people are worried about the side effects from the radiation. …