How can radiation be controlled and safely used in medicine

Control comes with regulating the amount of radiation that a patient is exposed to (using a dosimeter) while accomplishing the task required – such as taking radiology images or irradiating tumor cells. Regulating radiation levels include ensuring the right distance between the patient and radiation source and implementing requisite shielding techniques.  The time duration for exposre should be short and radiation sources should also be labeled accordingly.

a. to encourage apoptosis