Radiation Safety Dose Limits and Protective Measures in Medical Imaging Lecture Notes Study Material 2025/ 2026 Complete Exam Guide

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, Radiation Safety, Dose Limits, and Protective Measures in Medical Imaging.pdf Radiation Safety, Dose Limits, and Protective Measures in Medical Imaging Radiation Safety, Dose Limits, and Protective Measures in Medical Imaging.pdf


Terms in this set (32)



Know legal dose limits in the United States Annual: 50 mSv/yr (5000 mrem/yr)
Lens of Eye: 150 mSv/yr (15 rem/yr)
Other Organs: 500 mSv/yr (50 rem/yr)
Cumulative Whole Body: 10 mSv/yr x age
Pregnancy, Entire: 5 mSv (500 mrem)
Pregnancy, Monthly: 0.5 mSv (50 mrem)


Definition of use factor Use factor is the percentage of time during which the X-ray beam is on and
directed toward a particular protective barrier


Definition of workload. Product of the maximum milliamperage (mAmin/wk) and the number of x-
ray examinations performed per week.


Definition of occupancy factor Areas that may be adjacent to X-ray rooms,
full occupancy = work areas;
frequent occupancy = corridors, restrooms;
occasional occupancy = waiting rooms, stairways.



Radiation Safety, Dose Limits, and Protective Measures in Medical Imaging.pdf Radiation Safety, Dose Limits, and Protective Measures in Medical Imaging.pdf Radiation Safety, Dose Limits, and Protective Measures in Medical Imaging.pdf