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Questions and Answers
What is the primary purpose of a radiographer?
What is the primary purpose of a radiographer?
Which organization is responsible for maintaining the practice standards in radiography?
Which organization is responsible for maintaining the practice standards in radiography?
What does the ALARA principle stand for?
What does the ALARA principle stand for?
The Code of Ethics for radiologic technologists is maintained by which organization?
The Code of Ethics for radiologic technologists is maintained by which organization?
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Which of the following is NOT a role of a radiologic technologist?
Which of the following is NOT a role of a radiologic technologist?
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Radiographic imaging primarily uses what type of energy?
Radiographic imaging primarily uses what type of energy?
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What is the term for the minimal part of the electromagnetic spectrum used in radiography?
What is the term for the minimal part of the electromagnetic spectrum used in radiography?
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What is the primary source of occupational radiation exposure for radiographers?
What is the primary source of occupational radiation exposure for radiographers?
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What does the 'Inverse Square Law' describe?
What does the 'Inverse Square Law' describe?
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X-ray tube anodes are generally made of which material due to its high melting point?
X-ray tube anodes are generally made of which material due to its high melting point?
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The component of the x-ray tube that emits electrons is called the:
The component of the x-ray tube that emits electrons is called the:
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Which of the following is NOT a component of a radiographic room?
Which of the following is NOT a component of a radiographic room?
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Which type of radiation is used in fluoroscopy to create real-time images?
Which type of radiation is used in fluoroscopy to create real-time images?
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The ability to differentiate between small objects that have similar densities in an x-ray image is called:
The ability to differentiate between small objects that have similar densities in an x-ray image is called:
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What is the typical unit used to measure the dose of radiation absorbed by a patient?
What is the typical unit used to measure the dose of radiation absorbed by a patient?
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Which factor does NOT affect the amount of radiation exposure to a radiologic technologist?
Which factor does NOT affect the amount of radiation exposure to a radiologic technologist?
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The collimator on an x-ray tube functions to:
The collimator on an x-ray tube functions to:
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How is the intensity of radiation at 2 meters from a source compared to that at 1 meter?
How is the intensity of radiation at 2 meters from a source compared to that at 1 meter?
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A 'Bucky' is used in radiography to:
A 'Bucky' is used in radiography to:
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Which term describes the unit of measurement for the number of disintegrations per second of a radioactive material?
Which term describes the unit of measurement for the number of disintegrations per second of a radioactive material?
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Which of the following best describes the purpose of a grid in radiographic imaging?
Which of the following best describes the purpose of a grid in radiographic imaging?
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In terms of patient management, what is critical when taking a radiograph?
In terms of patient management, what is critical when taking a radiograph?
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The distance from the x-ray tube to the image receptor is known as the:
The distance from the x-ray tube to the image receptor is known as the:
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Which of the following is NOT a method to minimize patient motion during a radiographic procedure?
Which of the following is NOT a method to minimize patient motion during a radiographic procedure?
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How does magnification affect the spatial resolution of an image?
How does magnification affect the spatial resolution of an image?
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Study Notes
Radiographer Roles and Responsibilities
- Primary role involves administering ionizing radiation for diagnostic purposes.
- Additional tasks include maintaining radiology equipment and managing patient records, though these are secondary roles.
Organizations in Radiography
- The ASRT (American Society of Radiologic Technologists) oversees practice standards in radiography.
- The Code of Ethics for radiologic technologists is set by the ARRT (American Registry of Radiologic Technologists).
Radiation Principles
- ALARA principle stands for "As Low As Reasonably Achievable," emphasizing minimizing radiation exposure.
- The 'Inverse Square Law' describes how radiation intensity decreases with increased distance from the source.
Radiation Types and Measurements
- Radiographic imaging utilizes electromagnetic radiation, specifically X-rays.
- The typical unit for measuring radiation dose absorbed by patients is the Gray.
Radiographic Equipment
- X-ray tube anodes are commonly made from tungsten, chosen for its high melting point.
- The collimator limits the size of the radiation beam and filters out low-energy x-rays.
Radiation Exposure Considerations
- The primary occupational radiation exposure for radiographers comes from scatter radiation.
- Factors affecting radiation exposure include time, distance, and shielding; a patient's weight does not influence exposure.
Image Quality and Processing
- The term 'contrast resolution' refers to the ability to differentiate small objects with similar densities in an X-ray image.
- A 'Bucky' improves image quality by absorbing scatter radiation.
Patient Management in Radiography
- Critical aspects of patient management include explaining the procedure clearly to patients before conducting radiographs.
- Minimizing patient motion is essential; methods include using shorter exposure times and giving clear instructions.
Measurement Units in Radiography
- The Becquerel is the unit for measuring disintegrations per second of a radioactive substance.
- The source-to-image distance (SID) refers to the distance from the x-ray tube to the image receptor.
Image Quality Factors
- Magnification typically decreases the spatial resolution of an image, impacting detail clarity.
- Grids increase image contrast by filtering scattered radiation, thus enhancing the overall quality of radiographic images.
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Description
Test your knowledge on the primary roles of a radiographer and the standards governing the practice. This quiz covers key concepts like the ALARA principle and the organizations that regulate radiography practices. Perfect for students in radiography programs.
