MDS PREP
All of the following form radiolucent stones except
1. Xanthine
2. Cysteine
3. Allopurinol
4. Orotic acid
Radiology
Answer: 4
All of the following form radiolucent stones except orotic acid.
Best radiograph for viewing # of maxillary bone
1. Submentovertex
2. PA view
3. Waters view
4. Towne"s projection
Radiology
Answer: 3
The best radiograph for viewing the maxillary bone is Waters view.
Which of the following is called as basic "sectional" or "slice" radiography
1. Othopantomography
2. Cephalogram
3. Tomography
4. All of the above
Radiology
Answer: 3
The imaging technique called basic "sectional" or "slice" radiography is tomography.
Which of the following provides superior definition of soft tissues, bony details and physiologic information about the TMJ joint
1. MRI
2. Pantomograph
3. Arthrography
4. CT scan
Radiology
Answer: 3
The imaging technique that provides superior definition of soft tissues, bony details, and physiologic information about the TMJ joint is arthrography.
Waters projection is useful for eveluating
1. Frontal and ethmoidal sinuses
2. Maxillary sinus
3. Zygomaticofrontal suture and nasal cavity
4. All of the above
Radiology
Answer: 4
Waters projection is useful for evaluating all of the above: frontal and ethmoidal sinuses, maxillary sinus, zygomaticofrontal suture and nasal cavity.
Which radiographic projection is most useful in examining stone of a submandibular duct
1. Cross-sectional occlusal
2. OPG
3. Lateral oblique
4. PA view of mandible
Radiology
Answer: 1
The radiographic projection most useful in examining stone of a submandibular duct is cross-sectional occlusal.
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.
Filament in X-ray tube is heated by
1. Step-up high voltage transformer
2. Auto transformer
3. Step-down low voltage transformer
4. Ammeter
Radiology
Answer: 3
The filament in the X-ray tube is heated by the step-down low voltage transformer.