MDS PREP
The radiograph showing one of the best view of a fracture of
1. The orbital rim is the 30 degree occipitomental view
2. The orbital floor is the 10 degree occipitomental view
3. The orbital medial wall is the lateral skull view
4. The orbital roof is the lateral skull view
The radiograph showing the best view of a fracture of the orbital floor is the 10-degree occipitomental view.
Bilateral asymptomatic cyst like radiolucent lesion in a 7-year-old boy at the angle of mandible may be diagnosed as
1. Cherubism
2. Paget"s disease
3. Fibrous dysplasia
4. Static bone cyst
Radiology
Answer: 1
A bilateral asymptomatic cyst-like radiolucent lesion in a 7-year-old boy at the angle of the mandible may be diagnosed as cherubism.
The ingredient of the fixing solution of the X-ray is
1) Hydroquinone
2) Elon
3) Sodium bisulphate
4) Acetic acid
Radiology
Answer: 4
Acetic acid is a key ingredient in the fixing solution used in radiography. It acts as a stop bath, neutralizing the developer and maintaining the acidic environment necessary for proper fixation. Hydroquinone and elon are developer agents, while sodium bisulfate is not typically part of the fixing process.
Characteristic of screen film used for cephalometric radiograph
1. High contrast, medium-speed
2. Low contrast, faster speed
3. Low contrast, wide latitude
4. High contrast, high speed
Radiology
Answer: 3
Characteristic of screen film used for cephalometric radiograph is low contrast, wide latitude.
Which of the following changes should be done to change from the long scale contrast film technique to a short scale contrast film technique while maintaining the same density
1. Decrease the kVp and increase the mA
2. Decrease the kVp and mA
3. Increase the kVp and decrease mA
4. Increase the kVp and mA
Radiology
Answer: 1
To change from the long scale contrast film technique to a short scale contrast film technique while maintaining the same density, decrease the kVp and increase the mA.
All of the following are radiolucent except
1. Osteomalacia
2. Osteopetrosis
3. Ameloblastoma
4. Central giant cell granuloma
Radiology
Answer: 2
All of the following are radiolucent except osteopetrosis.
Cervical burnout refers to
1) Cementoenamel junction misidentified as caries
2) Sun burns caused on neck
3) Root surface caries at cementoenamel junction
4) None of the above
Radiology
Answer: 1
Explanation: Cervical burnout is an optical illusion that occurs on dental radiographs, where the area around the cementoenamel junction appears darker due to the difference in density between the enamel and the underlying dentin. This can lead to misinterpretation as caries.
Inventor of orthopantomographic machine is
1. Hounsfield
2. Roentgen
3. Kell
4. Namata
Radiology
Answer: 4
The inventor of the orthopantomographic machine is Namata.