MDS PREP

The effect of short exposure on contrast of film
1. Contrast increases
2. Contrast decreases
3. Contrast is constant
4. Contrast is variable

Radiology Answer: 2

Disadvantages of using a GRID during radiography is
1) Increased patient exposure
2) Decreased exposure time
3) Increased secondary radiation fog to film
4) Reduces secondary radiation to film

Radiology Answer: 1

A thin radiolucent line which follows the root outline on X-rays is
1) Lamina dura
2) Periodontal ligment
3) Nutrient canal
4) Pulp

Radiology Answer: 2

What is the function of filtration process while taking radiographs?
1. Remove the short wavelength photons
2. Remove the portion of long wavelength photons
3. To increase the radiation dose to patient
4. None of the above

Radiology Answer: 2

80 kVp and 15 mA and source film distance of 8 inches exposure time for a film is 1/2 second. Keeping the kilovoltage and miliamperage constant exposure time at 16 inches
1. 1/2 second
2. 1 second
3. 2 second
4. 4 second

Radiology Answer: 3

Foreshortening of radiographic image results when central X-ray is
1) Parallel to object and film
2) Parallel to object but not to film
3) Perpendicular to film but not to object
4) Perpendicular to object but not to film

Radiology Answer: 3

Penetration power of X-ray is measure of
1) Exposure time
2) Milliamperage
3) Kilovoltage
4) None of the above

Radiology Answer: 3

Apical root fracture is visible in
1. Intraoral periapical X-ray
2. Bitewing X-ray
3. Occlusal X-ray
4. OPG

Radiology Answer: 1

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MDS PREP

The effect of short exposure on contrast of film 1. Contrast increases 2. Contrast decreases 3. Contrast is constant 4. Contrast is variable

Disadvantages of using a GRID during radiography is1) Increased patient exposure2) Decreased exposure time3) Increased secondary radiation fog to film4) Reduces secondary radiation to film

A thin radiolucent line which follows the root outline on X-rays is1) Lamina dura2) Periodontal ligment3) Nutrient canal4) Pulp

What is the function of filtration process while taking radiographs? 1. Remove the short wavelength photons2. Remove the portion of long wavelength photons3. To increase the radiation dose to patient4. None of the above

80 kVp and 15 mA and source film distance of 8 inches exposure time for a film is 1/2 second. Keeping the kilovoltage and miliamperage constant exposure time at 16 inches 1. 1/2 second 2. 1 second 3. 2 second 4. 4 second

Foreshortening of radiographic image results when central X-ray is1) Parallel to object and film2) Parallel to object but not to film3) Perpendicular to film but not to object4) Perpendicular to object but not to film

Penetration power of X-ray is measure of1) Exposure time2) Milliamperage3) Kilovoltage4) None of the above

Apical root fracture is visible in 1. Intraoral periapical X-ray 2. Bitewing X-ray 3. Occlusal X-ray 4. OPG

Explore by subjects

The effect of short exposure on contrast of film
1. Contrast increases
2. Contrast decreases
3. Contrast is constant
4. Contrast is variable

Disadvantages of using a GRID during radiography is
1) Increased patient exposure
2) Decreased exposure time
3) Increased secondary radiation fog to film
4) Reduces secondary radiation to film

A thin radiolucent line which follows the root outline on X-rays is
1) Lamina dura
2) Periodontal ligment
3) Nutrient canal
4) Pulp

What is the function of filtration process while taking radiographs?
1. Remove the short wavelength photons
2. Remove the portion of long wavelength photons
3. To increase the radiation dose to patient
4. None of the above

80 kVp and 15 mA and source film distance of 8 inches exposure time for a film is 1/2 second. Keeping the kilovoltage and miliamperage constant exposure time at 16 inches
1. 1/2 second
2. 1 second
3. 2 second
4. 4 second

Foreshortening of radiographic image results when central X-ray is
1) Parallel to object and film
2) Parallel to object but not to film
3) Perpendicular to film but not to object
4) Perpendicular to object but not to film

Penetration power of X-ray is measure of
1) Exposure time
2) Milliamperage
3) Kilovoltage
4) None of the above

Apical root fracture is visible in
1. Intraoral periapical X-ray
2. Bitewing X-ray
3. Occlusal X-ray
4. OPG