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Job Duties. Health physics technicians use equipment, such as spectrometers and gamma counters, to determine levels of radiation. They calculate exposure times and instruct workers in safety procedures and precautions, including the use of radiation detectors and protective gear.
A radiology technician is skilled in conducting imaging tests such as MRIs, CT scans, ultrasounds and x-rays. These technicians often specialize in one procedure, but many seek certification in several. The technician places the patient in the correct position for testing based on a doctorâs orders.