Doctor insights on:
Cat Scans And Radiation
Physics: The physical phenomena on which these imaging techniques are built are very different, each is best suited for different purposes. Cat scans are sophisticated x ray, they rely on the degree of absorption of gamma rays (bones, ca, other metals will contrast most). Mri is better for softer tissue imaging because it depends more on the behavior of hydrogen atoms and h2o in the strong magnetic field. ...Read more
Irradiation is the process by which an object is exposed to radiation. The exposure can originate from various sources, including natural sources. Most frequently the term refers to ionizing radiation, and to a level of radiation that will serve a specific purpose, rather than radiation exposure to normal ...Read more
Help! i had a stomach cat scan in oct 2013 and two brain cat scans. Gi doc recommends I have another cat scan due to stomach issues. Radiation to much?
Good question: Were you told why the scans were ordered? ...Read more
For Dental implants evaluations, do you really need CT Scan. Any concerns from using CAT Scan – Kodak 9500 Cone Beam Scanner. How much radiations?
The decision: to use diagnostic X-rays is a risk/benefit analysis. The theoretical risk of a CT scan is very low. If the CT scans were medically indicated, it wasn't too much radiation. If the CT scans were unnecessary, then it was. You can go to xrayrisk.com and calculate your theoretical increased cancer risk from the scans. ...Read moreSee 1 more doctor answer
Dependingscans done: Scans vary and some scan are very high dose and large volume. Others are small and of low volume. See this site: http://www.Xrayrisk.Com/calculator/calculator.Php good luck. ...Read more
Had a lot of CT scans.My dr always told me, cells repair after exposure to CT. How is radiation cumulative? How is the damage cumulative? Thank you
Relax: While evidence-based physicians are required by the strictest laws to tell you the truth, it's actually profitable for charlatans to exaggerate, cynically, the dangers of today's medicine. The extra radiation you get from a CT scan today is equal to what you'd get from cosmic rays from living in Denver instead of Topeka for two months. The increased cancer risk isn't measurable. ...Read more
Too much?: "too much" is a relative term. Basically no. If you have a medical condition, ie cancer that is being monitored by ct then the benefits outweigh the risks. If you are getting a ct for no reason then the risks (small but finite) outweigh the benefits. Any medical procedure is not a binary state. There is a continuum of risks and benefits. ...Read more
I'm trying to understand how much radiation a CT scan has. I've had two, but no more. Can it be average per say to have two and still be ok?Fearcancer
Do not worry: While CT scans do expose a person to radiation, the information gained is usually worth the slight risk. There are many things you can do to safeguard your health, e.g., maintain healthy weight, exercise at least 150 minutes/week, take HPV vaccine, avoid excessive sun/UV exposure, no tobacco or alcohol. ...Read more
This is light of extremely short wavelengths typically produced either among the stars / in cosmic rays or by radioactive element decay. Gamma rays form the background of normal radiation in which we all live; it is substantially greater than the exposure we get from imaging scans or should get from ...Read more
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