MDS PREP
Internal derangement of the TMJ can be best diagnosed by
1. MRI
2. CT scan
3. Arthrography
4. Panoramic view
Radiology
Answer: 1
Internal derangement of the TMJ can be best diagnosed by MRI.
Fractures of middle third of the face can ve viewed in all except
1. Occipitomental view 10 degrees
2. Occipitomental view 30 degrees
3. Lateral skull view
4. PA view
Radiology
Answer: 4
Fractures of the middle third of the face can be viewed in all except PA view.
For detection of herniation and perforation of fibrous disc of TMJ that is best indicated is
1. Transcranial view
2. CT scan
3. MRI
4. Arthrography
Radiology
Answer: 4
For detection of herniation and perforation of the fibrous disc of TMJ, the best indicated method is arthrography.
Primary source of X-ray photons from an X-ray tube is
1. Stray radiation
2. Bremhaulstrong radiation
3. Characteristic radiation
4. All of the above
Radiology
Answer: 2
The primary source of X-ray photons from an X-ray tube is characteristic radiation.
Crimp marks in a radiograph are due to
1) Droplets of fixing solution
2) Droplets of developing solution
3) Static electricity
4) Sharp bending of the film
Radiology
Answer: 4
Crimp marks in a radiograph are due to sharp bending of the film.
Crimp marks are artifacts that appear as linear or curvilinear indentations on a
radiograph. They are typically caused by the film being sharply bent or folded
during the developing process. These marks can obscure important anatomical
structures and may lead to incorrect diagnoses if not recognized as artifacts.
They are not related to the droplets of fixing or developing solution (which
would not create such sharp lines) or static electricity.
Radiographic image of a malignant tumour is
1. Distinct sclerotic borders
2. Geographic bone destruction
3. Sunburst appearance
4. All of the above
Radiology
Answer: 3
Radiographic image of a malignant tumour is characterized by sunburst appearance.
The target of the X-ray tube is angulated to produce all the following effects except
1. To decrease the effective focal spot
2. To increase the image sharpness
3. to energize the photons
4. To dissipate heat
Radiology
Answer: 3
The target of the X-ray tube is angulated to produce all the following effects except to energize the photons.
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.