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NEETMDS- Radiology mcq
MDS PREP
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
Radiology Answer: 1

When taking radiographs for children, exposure should be reduced by what percentage of that of adults?
1) 25 %
2) 50 %
3) 75 %
4) Same exposure
Radiology Answer: 2

Among the natural radiation, the one that contributes to more radiation exposure of general population
1) Cosmic
2) Terrestrial
3) Radon
4) Consumer products
Radiology Answer: 3

Radiographically mental foramen lies between the roots of
1) Canine and first premolar
2) First and second premolars
3) Second premolar and first molar
4) In the incisor region
Radiology Answer: 2

A patient who has geen given tumoricidal dose of radiotherapy recently reports to dental clinic with painful carious exposed mandibular first molar with periapical abscess. The treatment of choice should be
1) Extraction of the offending tooth
2) Root canal treatment if possible
3) No treatment should be given
4) Incision and drainage of abscess
Radiology Answer: 2

Reflecting layer used in intensifying screens
1) Calcium tungstate
2) Titanium oxide & magnesium carbonate
3) Gaddinium oxysulphide
4) Lanthanum oxybromide
Radiology Answer: 2

In radiography "latent image period" is the period between
1) Subsequent doses of radiation
2) Exposure of film and development of image
3) Exposure to X-rays and development of radiographic image
4) None of the above
Radiology Answer: 3

Which of the following statements is FALSE
1) X-rays travel at a speed of 297,600 kms
2) X-rays can be focused
3) The nucleus of an atom contains protons and neutrons
4) Cathode rays can converged to a point
Radiology Answer: 2

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