MDS PREP
Intensifying screen is used in extraoral radiograph to
1. Decrease patient radiation
2. Increase contrast
3. Decrease contrast
4. Collimation
Radiology
Answer: 1
Intensifying screen is used in extraoral radiographs to decrease patient radiation.
A consistant radiographic feature in Page"s disease is
1. Hypercementosis of tooth
2. Widened periodontal ligament
3. Loss of normal trabecular pattern of bone
4. Root resorption
Radiology
Answer: 1
A consistent radiographic feature in Paget's disease is hypercementosis of tooth.
In steps in developing film first step is
1) Stirring the solution
2) Washing of film
3) Dip in developer
4) Dip in fixer
Radiology
Answer: 1
The first step in developing radiographic film is to ensure that the developing solution is well-mixed and at the correct temperature, which is achieved by stirring the solution (option 1). This ensures uniformity in the chemical reaction that will occur during the development process.
Washing the film (option 2) occurs after development to remove excess chemicals, while dipping in developer (option 3) is the actual step that follows stirring. Dipping in fixer (option 4) is the final step to stabilize the image.
Asymptomatic mixed radiopaque and radiolucent lesions found at the lower incisor region of a middle aged women may be
1. Periapical cysts
2. Cementoblastoma
3. Cementoma
4. Odontogenic cysts
Radiology
Answer: 3
Asymptomatic mixed radiopaque and radiolucent lesions found at the lower incisor region of a middle-aged woman may be cementoma.
The following projection best locates the position of impacted third molar
1. Lateral oblique view of mandible
2. Waters view
3. Occlusion view combined with periapical view
4. Occlusal view combined with bite wing
Radiology
Answer: 3
The projection that best locates the position of an impacted third molar is occlusion view combined with periapical view.
Yellowish-brown staining of the IOPA dental X-ray film is due to
1. Immersion in fixer without washing
2. Increased temperature of developer
3. Increased exposure time
4. Drying away of the developer solution
Yellowish-brown staining of the IOPA dental X-ray film is due to immersion in fixer without washing.
Which of the following changes should be done to change from the long scale contrast film technique to a short scale contrast film technique while maintaining the same density
1. Decrease the kVp and increase the mA
2. Decrease the kVp and mA
3. Increase the kVp and decrease mA
4. Increase the kVp and mA
Radiology
Answer: 1
To change from the long scale contrast film technique to a short scale contrast film technique while maintaining the same density, decrease the kVp and increase the mA.
Grid is used in radiography to
1. Reduce kVp
2. Reduce exposure time
3. Reduce fogging
4. None of the above
Radiology
Answer: 3
Grid is used in radiography to reduce fogging.