FREE RADIOLOGY AND STUDY GAMES ABOUT CHAPTER

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FREE RADIOLOGY AND STUDY GAMES ABOUT CHAPTER

10 AND 11 RA EXAM QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -81 Questions and Answers -format set of multiple-choice -Expert- Explanation Question 1: The main function of the Nuclear Regulatory Commission (NRC) is to: Inspect imaging facilities Oversee the nuclear energy industry Regulate imaging facilities

Answer:

Oversee the nuclear energy industry Question 2: When performing a mobile fluoroscopic procedure, to reduce the radiation exposure to the patient, the radiographer must use a minimal source-to-skin distance of ____ cm (____ inches).

Answer:

30; 12

Question 3: To define ALARA, health care facilities usually adopt investigation levels, defined as Level I and Level II. In the United States, these levels are traditionally _______ to ______ the applicable regulatory standards

Answer:

1/10; 3/10

Question 4: How far must a radiographer stand back during a mobile radiographic exposure?

Answer:

• meters

Question 5: When an exposed CR imaging plate is ready to be processed, a reading unit is used to scan the imaging plate with a helium-neon laser beam resulting in emission of violet light that is changed into an electronic signal by a device called a__.

Answer:

Photomultiplier tube Question 6: When settings are changed from one mA to a neighboring mA station, the most that linearity can vary is _____%

Answer:

10 Question 7: What material is commonly used in the tabletop of a radiographic examination table to make the tabletop as radiolucent as possible so that it will absorb only a minimal amount of radiation, thereby reducing the patient's radiation dose?

Answer:

Carbon fiber material Question 8: When the speed of screen-film systems doubles, for example, when changing from a 200-speed to a 400-speed system, patient radiation exposure is _____ by approximately

_____%.

Answer:

reduced; 50 Question 9: What publication recommends limits of exposure to ionizing radiation?

Answer:

NCRP #116

Question 10: To minimize skin exposure to electrons produced by photon interaction with the collimator, how far below the collimator should the patient's skin surface be?

Answer:

At least 15 cm below

Question 11: The cassette front containing the carbon fiber absorbs approximately __ as much radiation vs aluminum or cardboard, resulting in a __ dose for the patient because ___ radiographic techniques are required to produce the image

Answer:

half; lower; lower

Question 12: Which of the following is not an x-ray beam limitation device?

Collimator Filter Aperture diaphragm

Answer:

filter Question 13: When using digital fluoroscopy systems, making use of the last-image-hold feature

can:

Answer:

Be an effective dose reduction technique Question 14: Which are responsibilities of a health care facility's radiation safety committee?Assist in the development of radiation safety program Provide guidance for the radiation safety program Facilitate the ongoing operation of the radiation safety program

Answer:

all Question 15: In general, nonstochastic effects occur only after large doses of radiation are received True or False

Answer:

true Question 16: The as low as reasonably achievable (ALARA) concept presents an extremely conservative model with respect to the relationship between Ionizing radiation and potential risk True or False

Answer:

True

Question 17: HVL may be defined as the thickness of a designated absorber required to do what?

Answer:

Decrease the intensity of the primary beam by 50% of its initial value Question 18: What dose limit concerns the upper boundary dose of ionizing radiation that results in a negligible risk of bodily injury or genetic damage?

Answer:

EFD limit Question 19: Which of the following is a responsibility of the Nuclear Regulatory Commission?

• Set x-ray manufacturing standards
• Police manufacturing standards
• Police the field of nuclear medicine

Answer:

1,2, and 3

Question 20: how is luminance measured

Answer:

candela per sqaure meter Question 21: What is the effective dose limit a radiation worker may receive to his/her whole body in one year?

Answer:

50 mSv Question 22: Of the following procedures, which involve extended fluoroscopic time?

• Biliary drainage
• Stent and filter placement
• Urinary or biliary stone removal

Answer:

1, 2, and 3