MDS PREP
To obtain better information of cyst eroding the surface of cortex
1) Exposure time should be reduced
2) Exposure time should be increased
3) Voltage should be increased
4) Milliamperage increased
Radiology
Answer: 1
Occluded submandibular salivary duct can be best observed by
1) Palpation
2) Sialography
3) Occlusal X-ray
4) Thermography
Radiology
Answer: 2
Which of the following is most sensitive to radiation induced cancer
1) Nerves
2) Female breast
3) Thyroid
4) Skin
Radiology
Answer: 2
Which of the following is useful for studying the movements of the tongue
1) Angiography
2) Arthroscope
3) Fluroscope
4) Sonograpgy
Radiology
Answer: 3
In bitewing radiographs, occlusal pit caries of enamel appears as a
1. Circular radiolucent area
2. Triangular radiolucent area with its base towards the dentino enamel junction
3. Vertical radiolucent line
4. None of the above
Radiology
Answer: 2
Image sharpness on a radiograph is increased by
1) Increasing the film speed
2) Increasing the object filem
3) Using a small focal spot size
4) Using a large focal spot size
Radiology
Answer: 3
Radiation caries is caused by irradiation of
1) Salivary glands
2) Enamel
3) Enamel and dentin
4) Oral mucosa
Radiology
Answer: 1
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