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Title : World Cancer Day:Can X-rays and CT scans cause cancer?
link : World Cancer Day:Can X-rays and CT scans cause cancer?

World Cancer Day:Can X-rays and CT scans cause cancer?

the widespread belief that X-ray radiation and CT scans can cause cancer has flaws and is based on a theoretical model unproven, a study suggests.



To estimate the risk of cancer of low radiation doses, scientists used a model known as linear no-threshold (LNT) in the study published in the American Journal of Clinical Oncology.



However, risk estimates based on this model "are only theoretical and, so far, have never been conclusively demonstrated by empirical evidence," wrote researcher James Welsh, University of Loyola in Chicago.



The use of the model LNT drives unfounded fears and "overspending on putative measures, but unnecessary and wasteful security, "Welsh observed.



The LNT model, the carcinogenic effects well established high-dose radiation extending downward in a straight line at very low doses.



The model deters many physicians using techniques appropriate image and "discourages many in the audience to get appropriate and necessary images, all in the name of avoiding any exposure to radiation," said the researcher.



This model assumes that there is no safe dose of radiation, no matter how small.


However, the human body has evolved the ability to repair damage by low doses of radiation that occurs naturally in the environment.



studies of survivors of the atomic bombs and epidemiological studies of human populations have never been shown conclusively that exposure to low doses of radiation can cause cancer, according to the study.




Any claim that low doses of radiation from medical imaging procedures is known to cause cancer "should be questioned vigorously, because it serves for alarm and such damage, rather than educate" the scientists suggested.




The LNT model "must finally being abandoned and decisively, "the authors concluded.

So there is a dispute among some followers low doses of radiation can cause cancer , which came to a positive conclusion according to the study, but some even say it is only a theoretical explanation and do not have any practical basis of the test. But it is up to when you go for an X-ray or CT scan to decide wether to go under a low-dose radiation scan or not!

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