Radiologic Technologist how-to
How to Apply ALARA During an Exam
Every exam should use the least radiation needed for a diagnostic image.
Quick answer
Every exam should use the least radiation needed for a diagnostic image. In short: check; use; collimate, then complete the remaining steps below.
Step by step
Check whether the patient could be pregnant and follow the department policy.
Use the correct protocol and exposure factors for the patient’s size.
Collimate tightly to the area of interest.
Use shielding according to current department policy.
Step behind the control booth barrier or increase your distance for portables.
Avoid repeats by positioning carefully the first time.
Safety reminders for radiologic technologists
- Follow ALARA: time, distance and shielding
- Wear your dosimeter at all times in the department
- Use proper body mechanics and lift help for patient transfers
- Follow infection-control procedures and clean equipment between patients
Key terms
Radiograph · ALARA · kVp · mAs · Collimation · Central ray: see the full radiologic technologist glossary.