Prepare for your exams
Get points
Guidelines and tips

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

Guidelines and tips

Sell on Docsity

Log in Sign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search Store documents

The best documents sold by students who completed their studies

Search through all study resources

Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents

20 Points

For each uploaded document

Answer questions

5 Points

For each given answer (max 1 per day)

All the ways to get free points

Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

University Rankings

Discover the best universities in your country according to Docsity users

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

From our blog

Exams and Study

Go to the blog

TBC SAFETY EXAM QUESTIONS WITH APPROVED ANSWERS 2024/2025, Exams of Radiography

Clarkson University Radiography

TBC SAFETY EXAM QUESTIONS WITH APPROVED ANSWERS 2024/2025

Typology: Exams

2024/2025

Available from 11/20/2024

richard-nyamweya 🇺🇸

37 documents

1 / 10

This page cannot be seen from the preview

Don't miss anything!

TBC$SAFETY$EXAM$QUESTIONS WITH

APPROVED ANSWERS 2024/2025

During compton interactions, the incident x-ray photon interacts with what

portion of an atom?

outer shell electron

Photons produced outside of the actual focal spot are known as:

off-focus radiation

Per the NCRP, personnel protective lead aprons used during fluoroscopy

should be at least:

0.50 millimeters of lead equivalent

Radiation dose reduction that is a result of using protective shielding is based

on what 2 things?

Material of the shield

Thickness of the shield

Which radiation quantity units are supplied for fluoroscopic exams?

Air kerma

The risk of cancer is estimated by calculating the:

effective dose

The measurement of the rate at which electrons flow is known as:

Amperage

A patient in the ER requires a mobile chest x ray. What effort would BEST

reduce radiation to the technologist?

Standing 6 feet away from the x-ray tube during the exposure

During a fluoroscopic procedure, what effort would BEST reduce radiation

exposure to the technologist?

Minimizing the time spent in the procedure

What international system of units (SI) is used to express exposure?

Coulombs/Kilogram

Which two are included in the total filtration of the x-ray beam?

Added filtration

Inherent filtration

The risk of cancer is estimated by calculating the:

Partial preview of the text

Download TBC SAFETY EXAM QUESTIONS WITH APPROVED ANSWERS 2024/2025 and more Exams Radiography in PDF only on Docsity!

TBC SAFETY EXAM QUESTIONS WITH

APPROVED ANSWERS 2024/

During compton interactions, the incident x-ray photon interacts with what portion of an atom? outer shell electron Photons produced outside of the actual focal spot are known as: off-focus radiation Per the NCRP, personnel protective lead aprons used during fluoroscopy should be at least: 0.50 millimeters of lead equivalent Radiation dose reduction that is a result of using protective shielding is based on what 2 things? Material of the shield Thickness of the shield Which radiation quantity units are supplied for fluoroscopic exams? Air kerma The risk of cancer is estimated by calculating the: effective dose The measurement of the rate at which electrons flow is known as: Amperage A patient in the ER requires a mobile chest x ray. What effort would BEST reduce radiation to the technologist? Standing 6 feet away from the x-ray tube during the exposure During a fluoroscopic procedure, what effort would BEST reduce radiation exposure to the technologist? Minimizing the time spent in the procedure What international system of units (SI) is used to express exposure? Coulombs/Kilogram Which two are included in the total filtration of the x-ray beam? Added filtration Inherent filtration The risk of cancer is estimated by calculating the:

effective dose Which two are controlled by kVp? Beam quality Electric potential What is the purpose of primary beam restriction? keep the amount of tissue irradiation to a minimum improve image quality reduce patient exposure reduce scatter production What is a type of ionizing radiation? X-rays Which shell of an atom has the lowest binding energy? outer shell What is the BEST way to monitor whole-body radiation dose? personnel dosimeter Which may alert fluoroscopic x-ray production after a preset period of time? Cumulative timer Which beam restriction device is the most versatile for defining the size and shape of the radiographic beam? Collimator The safety features of a fluoroscopic unit do not include a: high grid ratio Personnel dosimeters should always be worn at the: collar, outside the lead apron When using fluoroscopy, which is directly proportional to the exposure delivered to the patient? Milliamperage (mA) Which radiation interaction with matter results in the greatest occupational exposure? Compton Which would best help reduce radiation exposure to the radiographer?

Which would provide fluoroscopic imaging personnel with the BEST radiation protection opportunity? Controlling the fluoroscopic system remotely Which two are features of fluoroscopic equipment designed to reduce radiation exposure to the patient? Collimation Deadman switch During an x-ray exposure, what percentage of incident electron energy is converted to x-ray photons? 1% X-ray photons that do not have the energy to penetrate the patient will result in what? Increased patient skin dose A characteristic photon is created by the interaction between an incident electron and an: Inner-Shell electron of tungsten Which of the following is true in regard to grid use in fluoroscopy? Grid ratios used in fluoroscopy are generally lower than common radiographic grid ratios A shallow dose refers to what? Surface dose During the direct action of radiation, the x-ray photon interacts directly with the: Deoxyribonucleic acid (DNA) of the cell If the primary beam area is doubled by opening the collimator, patient dose and exposure to the operator will: increase by a factor of 2 Which are possible results of radiation exposure? Cell death Mutation of the cell Cell damage that is repaired by the cell When calculating the effective dose, the varying radio-sensitivity of different tissue types is defined according to what? Tissue weighting factor

Which three would be considered a secondary barrier? Walls over 7 feet tall Control booth Lead apron The radiation used during a surgical procedure resulted in entrance skin exposure of 70 mGy. The technologist collimated to an area of 6cm by 8cm during the procedure. What is the DAP for the exam? 3,360 mGy-cm Which of the following influence the fluoroscopic tabletop exposure rate? Filtration kVp Target- to- panel distance The gray is a unit of absorbed dose defined as being equal to: joule/kilogram As filtration increases, the quality of the beam will: Increase When ionization occurs, which is separated from the atom? Electron Why is the use of higher kVp recommended? mAs can be reduced penetration is increased patient exposure may be reduced What type of personnel dosimeter uses aluminum oxide as the absorbing material? Optically stimulable luminescent dosimeter (OSL) Which effects is most likely to occur at low doses of radiation? Cancer The majority of the x-ray photons are produced at the anode by which interaction? Bremsstrahlung Low energy x-ray photons absorbed in the patients skin will usually result in increased: patient exposure The lifetime whole-body dose limit for a radiographer is calculated as:

What thickness of protective shielding is required in the Bucky slot cover of a fluoroscopic imaging unit? 0.25 mm lead equivalent Which two would help reduce unnecessary radiation to the patient during fluoroscopy? Last image hold Pulsed fluoroscopy Which two radiation interactions with matter will not result in ionizing radiation? Coherent scattering Transmission Federal law on radiation protection requires which of the following? signage for radiation areas maintaining personnel dose records The electrons flowing from the cathode to the anode inside the x-ray tube may be defined as the: tube current Which phase of the acute radiation syndrome (ARS) is considered the body's initial reaction to a high dose of radiation? Prodromal phase Which of the following are identified as a positively charged subatomic particles? Protons A correct position to wear a personnel dosimeter during fluoroscopy is: Over the lead apron, at the collar level What is the most likely effect of a large radiation exposure during the first few days pregnancy? prenatal death Compared to other cells in the body, the relative radiosensitivity of blood cells is: High Which of the following models was used to establish radiation protection standards for stochastic effects of radiation? linear non-threshold model

During the earliest phases of pregnancy, the embryo is: sensitive to radiation Which of the following may alert fluoroscopic x-ray production after a preset period of time? cumulative timer What effect will decreased collimation (larger exposure field) have on the patients effective dose when using a fixed technique? Increases patient effective dose What type of charge does the nucleus of an atom contain? Positive The thickness of a material needed to decrease the intensity of an x-ray beam by 50% of its original value is termed the: half value layer According to the NCRP, total filtration that is permanently fixed in the useful beam for fluoroscopic equipment that operate higher than 70 kVp may not be less than: 2.5 mm aluminum equivalent Which of the following accelerated electrons in an x-ray tube? Application of voltage What is the annual dose equivalent limit for a radiographers hands? 500 millisieverts (mSv) Radiation measurements can be performed for which category? Radiation in air Radiation in tissue Radiation effects in tissue Expectant mothers who are technologists should wear a fetal dosimeter at what location? At the waist A technologist standing 6 feet away from the C-arm unit receives an exposure rate of 4 microgray/hour. What will the exposure rate be if the technologist moves back a total of 12 feet from the C-arm unit? 1 microgray/hour As filtration increases, the intensity of the x-ray beam will: Decrease

days after exposure