Doctor insights on:
Nuclear Radiation Effects
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
The theoretical: increased risk for any individual xray is minimal. For a medically indicated xray, the diagnostic benefit outweighs the minimal risk, so although it is always prudent to be aware of cumulative xray exposure, worrying excessively about X-rays could lead to imprudent and dangerous health care decisions. You can calculate the risks at xrayrisk.com. ...Read moreSee 1 more doctor answer
What are the immediate effects of acute radiation exposure? Such as in a nuclear reactor accident?
Nuclear reactor: Core melt down spews a number of products skyward. The most prominent 2 are iodine isotopes, leading to increase in thyroid cancer. Iodide or iodine pills 'protect' by consuming the absorption traps, blocking the isotopic dangerous ones. The other is strontium isotopes, which as a divalent cation long acting cation like calcium, can deposit in bones. ...Read moreSee 2 more doctor answers
Are the concerns about radiation from imaging overhyped?Just read numerous articles stating you need way more msv than a nuclear scan to be concerned?
Yes and No: For the most part, the concerns about radiation from imaging are overhyped. It is true that a patient receives a dose of radiation for every x-ray, CT and Nuclear study. But the amount is small. A patient can also receive a dose of radiation from riding an airplane, living in a house made from bricks or concrete, and dozens of other every day exposures. Doctors try to minimize medical exposures. ...Read moreSee 1 more doctor answer
No: All imaging tests that expose a patient to radiation should only be performed for certain conditions/symptoms. That is called appropriate use. Medical radiation is a useful tool, but it should not be used unless necessary to help make a diagnosis. Radiology is always trying to balance radiation dose with image quality. This is called alara - as low as reasonably achievable. ...Read moreSee 2 more doctor answers
How often can nuclear stress test be safely repeated, would doing two tests in 4 month be safe. Any radiations concerns. ?
No sig danger: The amount of radiation is pretty minimal. If its indicated, it should be fine but why repeat it after only 4 months? ...Read more
My friend went to Japan, 8 hours from Fukishima (nuclear reactor 3yrs ago). Would she have any radiation, would it spread to me or clothes? And why?
No: No risk. First she was a long distance from the radiation, and not likely exposed. Second it would not accumulate in her or her clothes unless directly exposed. Third three years have passed and any small amount of radioactive material that she might have had on her clothing would have been washed away in three years of laundering. ...Read more
What are the benefits and risk for nuclear medicine procedures? I heard that there will be radiation exposure associating with the procedures, how harmful is this to my body?
Physiologic study: Nuclear medicine involves using internal irradiation in order to define function of various organ systems of body, . Some isotopes are injected iv, inhaled, and some ingested. Most diagnostic nuclear medicine procedures involve low doses of radiation. The isotopes of higher doses are used to treat thyroid diseases or cancer. Benefits are from diagnosis of abnormality that can be detected/ treated. ...Read moreSee 2 more doctor answers
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