Over exposure to radiation is harmful
to patient as well as operator.
https://docs.google.com/presentation/d/1pN8IaWKZSoSiqF5Q8DwDrFHm7OrHwqaQbHVELHDrSPA/edit?usp=docslist_api
https://docs.google.com/presentation/d/1pN8IaWKZSoSiqF5Q8DwDrFHm7OrHwqaQbHVELHDrSPA/edit?usp=docslist_api
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