ALARA principle
Reduce radiation reasonably
The ALARA principle—As Low As Reasonably Achievable—guides radiation safety by requiring that exposure be minimized to the greatest practical extent, not merely kept below legal limits.
Workers handling radioactive materials, medical imaging technicians, and nuclear plant operators apply ALARA when designing procedures, shielding, and work schedules: The hospital redesigned its imaging suite to meet ALARA standards.
- dosimetryRadiation absorption measurement
- shieldingProtecting from harm
- cost-benefit analysisSystematic comparison of advantages, disadvantages
- radioactive decayUnstable atoms releasing energy
- safety cultureCollective attitude toward risk prevention
distance · public health policies · informed consent · ethical guidelines · safety protocols · risk assessment · dose · protective barriers · emergency preparedness · nuclear · regulatory · protection · environmental stewardship · threshold · radiation · occupational · safety · limit
- pediatric imaginghead CT, brain MRI, fetal ultrasound
- radiation safetydosimeter, radiation protection, radiation shielding, lead apron, dosimeters