



Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community for help and clear up your study doubts
Discover the best universities in your country according to Docsity users
Free resources
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
RTBC - RADIATION PROTECTION STUDY GUIDE WITH ANSWERS
Typology: Exams
1 / 6
This page cannot be seen from the preview
Don't miss anything!
The primary purpose of the ALARA principal and diagnostic imaging is to Reduce radiation does to occupational workers A radiation worker receive the radiation dose of 5 mGy while participating in a fluoroscopy procedure for 10 minutes. What radiation dose would have been received by the worker if they reduce their time in the radiation field to only five minute? 2.5 mGy Which cardinal rule of radiation protection is mathematically defined by the inverse square law Distance In order to reduce a Technologist occupational dose during a portable radiograph of the chest, the technologist should Stand several feet away from the patient during the exposure During a surgical procedure, using three minutes of fluoroscopy time, a radiographer receives an effective dose of 1 mSv. What effective those would be experienced by the radiographer, if the fluoroscopy time is doubled? 2 mSv A radiographer is exposed to a dose rate of 10 mSv per hour, while standing 3 feet from the patient during see arm procedures. What is the approximate dose rate if the radiographer stands for feet from the patient? 5.6 mSv/hr A radiologist receives an equivalent dose of 100 microsieverts while standing 25 cm from a patient during a fluoroscopy procedure. Estimate the equivalent dose if the radiologist and 10 cm from the patient. 625 microsieverts Which three of the following properties of lead make it a valuable material for radiation shielding devices?
Low energy photons What is the primary patient does measurement influenced by filtration Entrance skin dose (ESD) Increasing the thickness of filtration has what effect on the patient's entrance skin dose? Assume no other technical factors are changed Decreased ESD What is the most commonly used filtration material in diagnostic radiography? Aluminum How does increasing filtration thickness affect the quality of the x-ray beam Increased quality How does decreasing filtration thickness affect the quality of the x-ray beam? Decreased quality How does increasing filtration thickness affect the quantity of the x-ray beam? Decreased quantity The following illustration represents the energy spectrum of an unfiltered x-ray beam. What portion of the spectrum is most affected by the addition of aluminum filtration? A How does decreasing filtration thickness affect the quantity of the x-ray beam Increase quantity Which of the following is a form of an added filtration commonly included in the x-ray tube assembly Aluminum plates Which three of the following are included in the total filtration of the x-ray beam?
The thickness of added filtration within general use x-ray tube assemblies is equal to approximately 2 mm aluminum equivalence What is the minimum total filtration equivalence recommended by the national Council on radiation protection and measurements (NCRP) in report 1024 x-ray machines operating above 70 kVp? 2.5 mm aluminum equivalence. What term describes the thickness of a material that reduces the x-ray beam quantity by half Half value layer How is the x-ray beam changed by the addition of 1 half value layer of aluminum 50% decrease in quantity Which of the following beam energies requires the thickest half value layer 110 kVp What is the intensity of an x-ray beam created with one 2 value layer of filtration if the unfiltered intensity is 100 mGy? 50 mGy What term describes the thickness of a material that reduces the x-ray beam quantity by half? Half value layer How is the x-ray beam changed by the addition of 1 half value layer 50% decrease in quantity What is the intensity of an x-ray beam created with one HVL filtration if the unfiltered intensity is 50 mGy? 25 mGy The intensity of an x-ray beam created with one HVL of filtration resulted in an intensity of 75 mGy. What is the expected intensity of the beam of the filtration is removed 150 mGy HVL is a way of measuring what aspect of the x-ray beam Beam energy An increase in the measured half value layer of an x-ray tube indicates which of the following