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Showing page 1 of 21 (182 total shorts) — subject: "Radiology"
#1 Radiology
The best radiograph for viewing the maxillary bone is Waters view.
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Answer
Best radiograph for viewing # of maxillary bone 
 1. Submentovertex
 2. PA view
 3. Waters view
 4. Towne"s projection
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#2 Radiology
In a panoramic radiograph, a smiling appearance of structures occurs if the patient's chin is tilted downward.
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In panaromic radiograph, smiling appearance of structures occurs if patient chin is 
 1. Placed anterior to focal trough
 2. Placed posterior to focal length
 3. Tilted downward
 4. Tilted upwards
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#3 Radiology
The size of the focal spot influences radiographic definition.
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Answer
Size of the focal spot influences radiographic 
 1. Definition
 2. Density
 3. Contrast
 4. All of the above
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#4 Radiology
Dead bone appears on a radiograph as radiopaque.
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Answer
Dead bone appears on a radiograph as 
 1. Radiolucent
 2. Radiopaque
 3. Cotton wool appearance
 4. Salt and pepper appearance
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#5 Radiology
Intensifying screen is used in extraoral radiographs to decrease patient radiation.
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Answer
Intensifying screen is used in extraoral radiograph to 
 1. Decrease patient radiation
 2. Increase contrast
 3. Decrease contrast
 4. Collimation
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#6 Radiology
Screen films differ from non-screen films in that they are more sensitive to X-rays than light.
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Answer

Screen films differ form non-screen films in that 
1. They are more sensitive to light than X-rays
2. They are more sensitive to X-rays than light
3. They are usually used in intraoral radiography
4. They do not need intensifying screens

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#7 Radiology
The base of the skull can be viewed by both Towne's projection and Submentovertex.
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Answer
Base of skull can be viewed by 
 1. Towne"s projection
 2. Submentovertex
 3. PA view of skull
 4. Both A and B
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#8 Radiology
Radiographic appearance of osteosarcoma is sunburst appearance.
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Answer
Radiographic appearance of osteosarcoma is 
 1. Soap bubble appearance
 2. Onion skin appearance
 3. Cotton-wool appearance
 4. Sun burst appearance
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#9 Radiology
The reflecting layer used in intensifying screens is titanium oxide & magnesium carbonate.
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Answer
Reflecting layer used in intensifying screens 
 1. Calcium tungstate
 2. Titanium oxide & magnesium carbonate
 3. Gaddinium oxysulphide
 4. Lanthanum oxybromide
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