MDS PREP
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.
Which of the following is a possible cause for a low density radiograph
(light film?)
1. Cold developer
2. over exposure
3. Improper safety light
4. Excessive developing time
Radiology Answer: 1
Overexposure typically results in a darker film, not a lighter one. An improper safety light or excessive developing time would not directly cause a low density radiograph. It is essential to maintain the correct temperature and time in the developing process to achieve a diagnostic image quality. A cold developer will not fully develop the film, leading to a lighter, less detailed image.
Multiple radiolucencies are common in all of the following except
1. Multiple myeloma
2. Hyperparathyroidism
3. Osteopetrosis
4. Metastatic tumours of bone
Radiology
Answer: 3
Multiple radiolucencies are common in all of the following except osteopetrosis.
Orthopantamograph is not indicated in viewing
1. Anterior body of mandible
2. Coronoid process
3. Lower anterior region of mandible
4. All of the above
Radiology
Answer: 4
Orthopantamograph is not indicated in viewing all of the above: anterior body of mandible, coronoid process, lower anterior region of mandible.
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.
If multiple myeloma is suspected in a patient"s history and intraoral radiograph, which of the following radiographs should be taken to confirm the diagnosis
1. Lateral skull
2. Anterior-posterior view
3. Lateral oblique
4. Posterior-anterior view
If multiple myeloma is suspected, a lateral skull radiograph should be taken to confirm the diagnosis.
Which of the following is true of paralleling cone technique
1. The radiopacity of the zygoma is superimposed on the roots of third molars
2. Easy to place with the film holder
3. Less of gag reflex
4. No need to sterilize the firm holder
Radiology
Answer: 2
Which of the following is true of the paralleling cone technique: it is easy to place with the film holder.
One advantage of digital radiography is
1. All the teeth can be in a single film
2. Highly economical
3. The radiographic images are obtained immediately
4. None of the above
Radiology
Answer: 3
One advantage of digital radiography is that the radiographic images are obtained immediately.