1. What is the primary principle behind radiographic image formation?
A) Differential absorption of X-rays by different tissues
B) Reflection of X-rays by the body
C) Scattering of X-rays
D) Emission of visible light by tissues
Answer: A) Differential absorption of X-rays by different tissues
2. Which factor primarily affects the contrast of a radiographic image?
A) The difference in X-ray absorption between structures
B) The size of the X-ray tube
C) The focal spot size
D) The tube current (mA)
Answer: A) The difference in X-ray absorption between structures
3. What is the role of the X-ray film in radiographic image formation?
A) To capture the X-ray pattern and produce an image
B) To focus the X-ray beam
C) To regulate the X-ray tube voltage
D) To filter out low-energy X-rays
Answer: A) To capture the X-ray pattern and produce an image
4. What is the function of a radiographic grid?
A) To reduce scatter radiation and improve image contrast
B) To increase X-ray tube power
C) To focus the X-ray beam
D) To filter out high-energy X-rays
Answer: A) To reduce scatter radiation and improve image contrast
5. How does increasing the kilovoltage peak (kVp) affect image contrast?
A) It decreases image contrast
B) It increases image contrast
C) It has no effect on image contrast
D) It only affects image resolution
Answer: A) It decreases image contrast
6. What is the purpose of using a film-screen combination in radiography?
A) To improve image quality and reduce patient dose
B) To focus the X-ray beam
C) To regulate X-ray tube voltage
D) To dissipate heat from the X-ray tube
Answer: A) To improve image quality and reduce patient dose
7. What is ‘image density’ in radiographic imaging?
A) The degree of blackening on the radiographic film
B) The number of X-rays produced
C) The energy level of the X-ray beam
D) The thickness of the X-ray tube
Answer: A) The degree of blackening on the radiographic film
8. What is the effect of increasing the X-ray tube current (mA) on image density?
A) It increases image density
B) It decreases image density
C) It has no effect on image density
D) It only affects image contrast
Answer: A) It increases image density
9. How does the thickness of the body part being imaged affect radiographic image formation?
A) Thicker body parts absorb more X-rays and appear lighter on the image
B) Thicker body parts absorb fewer X-rays and appear darker on the image
C) Thicker body parts have no effect on X-ray absorption
D) Thicker body parts only affect image resolution
Answer: A) Thicker body parts absorb more X-rays and appear lighter on the image
10. What is ‘spatial resolution’ in radiographic imaging?
A) The ability to distinguish fine details in the image
B) The amount of X-ray exposure
C) The size of the focal spot
D) The type of X-ray film used
Answer: A) The ability to distinguish fine details in the image
11. What effect does increasing the X-ray tube voltage (kVp) have on X-ray beam penetration?
A) It increases penetration
B) It decreases penetration
C) It has no effect on penetration
D) It only affects image contrast
Answer: A) It increases penetration
12. How does the X-ray tube’s focal spot size influence image sharpness?
A) Smaller focal spots produce sharper images
B) Larger focal spots produce sharper images
C) Focal spot size has no effect on image sharpness
D) Focal spot size only affects image density
Answer: A) Smaller focal spots produce sharper images
13. What is the role of the radiographic contrast media?
A) To enhance the visibility of certain structures in the image
B) To reduce X-ray exposure
C) To focus the X-ray beam
D) To filter out high-energy X-rays
Answer: A) To enhance the visibility of certain structures in the image
14. What does ‘contrast resolution’ refer to in radiographic imaging?
A) The ability to distinguish between differences in X-ray absorption
B) The amount of X-ray exposure
C) The size of the X-ray tube
D) The thickness of the body part
Answer: A) The ability to distinguish between differences in X-ray absorption
15. How does scatter radiation affect image quality?
A) It reduces image contrast and sharpness
B) It increases image contrast
C) It improves image sharpness
D) It has no effect on image quality
Answer: A) It reduces image contrast and sharpness
16. What is the purpose of using a lead apron during radiographic procedures?
A) To protect the patient from unnecessary radiation
B) To focus the X-ray beam
C) To regulate X-ray tube voltage
D) To improve image quality
Answer: A) To protect the patient from unnecessary radiation
17. What is the significance of ‘image magnification’ in radiography?
A) It can make anatomical structures appear larger than their actual size
B) It improves the spatial resolution of the image
C) It reduces the contrast of the image
D) It has no effect on image quality
Answer: A) It can make anatomical structures appear larger than their actual size
18. How does the distance between the X-ray tube and the film affect the radiographic image?
A) Increasing the distance decreases image magnification and improves sharpness
B) Increasing the distance increases image magnification
C) The distance has no effect on image quality
D) Decreasing the distance reduces image contrast
Answer: A) Increasing the distance decreases image magnification and improves sharpness
19. What is the purpose of a ‘grid’ in radiographic imaging?
A) To reduce scatter radiation and improve image contrast
B) To focus the X-ray beam
C) To regulate X-ray tube current
D) To filter out low-energy X-rays
Answer: A) To reduce scatter radiation and improve image contrast
20. How does increasing the exposure time affect image density?
A) It increases image density by allowing more X-rays to reach the film
B) It decreases image density
C) It has no effect on image density
D) It only affects image contrast
Answer: A) It increases image density by allowing more X-rays to reach the film
21. What is ‘image noise’ in radiographic imaging?
A) Random variations in the image that can obscure details
B) The clarity of anatomical structures
C) The amount of X-ray exposure
D) The type of radiographic film used
Answer: A) Random variations in the image that can obscure details
22. What effect does increasing the X-ray tube’s kilovoltage (kVp) have on image contrast?
A) It decreases image contrast
B) It increases image contrast
C) It has no effect on image contrast
D) It only affects image density
Answer: A) It decreases image contrast
23. What is the main purpose of using X-ray film emulsion?
A) To capture the X-ray image by reacting to X-rays
B) To focus the X-ray beam
C) To regulate X-ray tube voltage
D) To filter out high-energy X-rays
Answer: A) To capture the X-ray image by reacting to X-rays
24. How does the X-ray tube’s anode angle affect image sharpness?
A) A smaller anode angle improves image sharpness
B) A larger anode angle improves image sharpness
C) The anode angle has no effect on image sharpness
D) The anode angle only affects image contrast
Answer: A) A smaller anode angle improves image sharpness
25. What is the purpose of a radiographic collimator?
A) To limit the size and shape of the X-ray beam
B) To increase X-ray tube power
C) To filter low-energy X-rays
D) To dissipate heat from the X-ray tube
Answer: A) To limit the size and shape of the X-ray beam
26. What does ‘digital radiography’ refer to?
A) Using digital sensors to capture and process X-ray images
B) Using traditional film to capture X-ray images
C) Using a film-screen combination
D) Using X-ray tubes with higher kVp
Answer: A) Using digital sensors to capture and process X-ray images
27. How does the use of a higher grid ratio affect image contrast?
A) It increases image contrast by reducing scatter radiation
B) It decreases image contrast
C) It has no effect on image contrast
D) It only affects image density
Answer: A) It increases image contrast by reducing scatter radiation
28. What is ‘quantum mottle’ in radiographic imaging?
A) A type of image noise caused by insufficient X-ray exposure
B) The clarity of the image
C) The degree of image magnification
D) The thickness of the radiographic film
Answer: A) A type of image noise caused by insufficient X-ray exposure
29. How does the use of a high-speed film-screen combination affect image quality?
A) It increases image noise but reduces patient dose
B) It improves image resolution
C) It has no effect on image quality
D) It increases image density and contrast
Answer: A) It increases image noise but reduces patient dose
30. What does ‘dynamic range’ refer to in digital radiography?
A) The range of X-ray intensities that can be captured and displayed
B) The size of the focal spot
C) The amount of X-ray exposure
D) The thickness of the imaging detector
Answer: A) The range of X-ray intensities that can be captured and displayed
31. How does the type of radiographic film affect image formation?
A) Different films have varying sensitivities to X-rays and affect image quality
B) It has no effect on image quality
C) It only affects the size of the X-ray tube
D) It regulates the X-ray tube voltage
Answer: A) Different films have varying sensitivities to X-rays and affect image quality
32. What is the effect of scatter radiation on digital radiographic images?
A) It degrades image quality by reducing contrast
B) It improves image resolution
C) It has no effect on image quality
D) It increases image sharpness
Answer: A) It degrades image quality by reducing contrast
33. How does an increase in X-ray tube current (mA) influence the radiographic image?
A) It increases the density of the image by producing more X-ray photons
B) It decreases image density
C) It has no effect on image density
D) It only affects image contrast
Answer: A) It increases the density of the image by producing more X-ray photons
34. What is ‘radiographic resolution’?
A) The ability to distinguish small details and structures in the image
B) The number of X-ray photons produced
C) The size of the X-ray tube
D) The thickness of the body part
Answer: A) The ability to distinguish small details and structures in the image
35. What is the impact of using a high-frequency X-ray generator on image quality?
A) It provides more consistent and higher-quality images
B) It decreases image sharpness
C) It has no effect on image quality
D) It only affects the amount of X-ray exposure
Answer: A) It provides more consistent and higher-quality images
36. How does the type of imaging receptor (film vs. digital) affect radiographic image formation?
A) Different receptors have varying sensitivities and resolutions
B) It has no effect on image formation
C) It only affects the X-ray tube power
D) It changes the X-ray beam quality
Answer: A) Different receptors have varying sensitivities and resolutions
37. What does ‘image sharpness’ refer to in radiographic imaging?
A) The clarity and detail of the image
B) The amount of X-ray exposure
C) The energy level of the X-rays
D) The size of the X-ray tube
Answer: A) The clarity and detail of the image
38. How does an increase in radiographic exposure time affect the image?
A) It increases the amount of X-ray exposure, resulting in a darker image
B) It decreases image density
C) It has no effect on image density
D) It only affects image contrast
Answer: A) It increases the amount of X-ray exposure, resulting in a darker image
39. What is the significance of using a ‘calibration phantom’ in radiography?
A) To ensure accurate and consistent image quality
B) To focus the X-ray beam
C) To regulate X-ray tube voltage
D) To filter out high-energy X-rays
Answer: A) To ensure accurate and consistent image quality
40. How does the angle of the X-ray tube affect image formation?
A) It can influence the distribution of X-ray intensity and image distortion
B) It has no effect on image quality
C) It only affects the X-ray tube’s cooling
D) It changes the X-ray beam quality
Answer: A) It can influence the distribution of X-ray intensity and image distortion
41. What does ‘film-screen contact’ refer to in radiographic imaging?
A) The quality of the contact between the X-ray film and the intensifying screen
B) The thickness of the X-ray film
C) The size of the X-ray tube
D) The amount of X-ray exposure
Answer: A) The quality of the contact between the X-ray film and the intensifying screen
42. How does the use of a higher contrast media concentration affect image quality?
A) It enhances the visibility of structures with different attenuation levels
B) It decreases image contrast
C) It has no effect on image quality
D) It only affects image sharpness
Answer: A) It enhances the visibility of structures with different attenuation levels
43. What is ‘image blurring’ in radiographic imaging?
A) The loss of detail and sharpness in the image
B) The increase in X-ray exposure
C) The thickness of the body part
D) The size of the focal spot
Answer: A) The loss of detail and sharpness in the image
44. How does the use of a lead shield affect radiographic imaging?
A) It reduces radiation exposure to specific areas, improving image quality
B) It increases image noise
C) It has no effect on image quality
D) It only affects image sharpness
Answer: A) It reduces radiation exposure to specific areas, improving image quality
45. What is ‘post-processing’ in digital radiography?
A) The manipulation of digital images to enhance or adjust quality after acquisition
B) The capturing of X-ray images
C) The focusing of the X-ray beam
D) The regulation of X-ray tube voltage
Answer: A) The manipulation of digital images to enhance or adjust quality after acquisition
46. What does ‘image distortion’ refer to in radiographic imaging?
A) The alteration of anatomical structures in the image due to improper technique
B) The amount of X-ray exposure
C) The energy level of the X-rays
D) The size of the X-ray tube
Answer: A) The alteration of anatomical structures in the image due to improper technique
47. How does the use of a high-resolution digital detector affect radiographic images?
A) It provides more detailed and clearer images
B) It decreases image resolution
C) It has no effect on image quality
D) It only affects the X-ray tube power
Answer: A) It provides more detailed and clearer images
48. What is ‘radiographic magnification’ and how does it occur?
A) The enlargement of anatomical structures in the image due to increased source-to-image receptor distance
B) The increase in image sharpness
C) The reduction of image density
D) The thickness of the X-ray film
Answer: A) The enlargement of anatomical structures in the image due to increased source-to-image receptor distance
49. What role does ‘image receptor contrast’ play in radiographic imaging?
A) It affects the range of shades of gray visible on the image
B) It has no effect on image quality
C) It controls the amount of X-ray exposure
D) It only affects image resolution
Answer: A) It affects the range of shades of gray visible on the image
50. How does ‘digital subtraction’ enhance radiographic imaging?
A) By removing unwanted structures or background noise from the image
B) By increasing X-ray exposure
C) By focusing the X-ray beam
D) By regulating the X-ray tube voltage
Answer: A) By removing unwanted structures or background noise from the image
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