Radiation risk: The hypothetical radiation risk of a single CT scan is minimal. That said, the risk is cumulative over a lifetime, so the decision to perform imaging with ionizing radiation is always a risk/benefit analysis. You can calculate your hypothetical lifetime risk for all of your studies with a simple tool at xrayrisk.com. I'm not sure what you mean by an "optional" CT CT scan.
Answered 3/12/2020
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