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Questions and Answers
Why does radiographic film fail to adequately demonstrate slight differences in subject contrast?
Why does radiographic film fail to adequately demonstrate slight differences in subject contrast?
- The film-screen combinations used today can only discriminate x-ray intensity differences of 5% to 10%. (correct)
- X-ray beam geometry leads to persistent image blurring that cannot be removed.
- Radiographic film is not sensitive enough to capture images of soft tissues.
- Radiographic contrast cannot be adjusted after being recorded on the film.
What is a limitation of both radiography and tomography in terms of tissue contrast?
What is a limitation of both radiography and tomography in terms of tissue contrast?
- They cannot resolve very small differences in tissue contrast.
- They cause persistent image blurring that cannot be eliminated.
- They are unable to adequately demonstrate slight differences in subject contrast. (correct)
- They do not allow adjustment of contrast after recording.
What problem arises from the open geometry of the x-ray beam in tomography?
What problem arises from the open geometry of the x-ray beam in tomography?
- Persistent image blurring that cannot be removed.
- Inability to adjust the contrast after image recording.
- Difficulty in demonstrating soft tissue characteristics.
- Degradation of image contrast due to scattered radiation. (correct)
How can digital imaging modalities like CT overcome the limitations of traditional film-based imaging?
How can digital imaging modalities like CT overcome the limitations of traditional film-based imaging?
What is a key advantage of CT scans over traditional radiography and tomography?
What is a key advantage of CT scans over traditional radiography and tomography?
How do radiography and tomography ensure that only the desired section of the patient is imaged?
How do radiography and tomography ensure that only the desired section of the patient is imaged?
What is the major shortcoming of film-based radiography?
What is the major shortcoming of film-based radiography?
What is another term for Computed Tomography (CT)?
What is another term for Computed Tomography (CT)?
What does the term 'tomography' mean?
What does the term 'tomography' mean?
In what manner do Computed Tomography (CT) images produce results?
In what manner do Computed Tomography (CT) images produce results?
What issues arise when structures differ only slightly in density in radiography?
What issues arise when structures differ only slightly in density in radiography?
Which term describes the difficulty and sometimes impossibility in distinguishing a particular detail in radiography?
Which term describes the difficulty and sometimes impossibility in distinguishing a particular detail in radiography?
Which of the following is NOT an advantage of computed tomography (CT) over conventional radiography?
Which of the following is NOT an advantage of computed tomography (CT) over conventional radiography?
Which of the following is NOT a common application of computed tomography (CT)?
Which of the following is NOT a common application of computed tomography (CT)?
What is the principle behind computed tomography (CT) imaging?
What is the principle behind computed tomography (CT) imaging?
What is the approximate size (diameter) of the bore or opening in a typical computed tomography (CT) scanner?
What is the approximate size (diameter) of the bore or opening in a typical computed tomography (CT) scanner?
Which of the following statements about computed tomography (CT) is FALSE?
Which of the following statements about computed tomography (CT) is FALSE?
What is the main limitation of conventional radiography compared to computed tomography (CT)?
What is the main limitation of conventional radiography compared to computed tomography (CT)?
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