MDS PREP
Higher kVp is
1. Disadvantageous to film
2. Disadvantageous to patient
3. Advantageous to film
4. All of the above
Radiology
Answer: 1
Higher kVp is disadvantageous to film.
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 wavelength of X-ray photon depends upon
1) Milli amperage
2) Kilo voltage
3) Distance between source and object
4) Quantity of electrons in the cathod stream
Radiology
Answer: 2
The wavelength of X-ray photon depends upon kilo voltage.
The wavelength of X-rays is inversely proportional to their energy, and the
energy of X-ray photons is determined by the kilo voltage (kV) used in the X-ray
tube. Higher kV results in higher energy and shorter wavelength photons, which
are more penetrating and are used for imaging denser tissues, while lower kV
results in lower energy and longer wavelength photons, which are less
penetrating and are used for imaging softer tissues. The other factors mentioned
(milli amperage, distance between source and object, and quantity of electrons
in the cathodic stream) affect the intensity of the X-ray beam but not the
wavelength of the photons.
Inventor of orthopantomographic machine is
1. Hounsfield
2. Roentgen
3. Kell
4. Namata
Radiology
Answer: 4
The inventor of the orthopantomographic machine is Namata.
Which of the following has a radiolucency closest to the dentin
1. ZOE
2. Calcium hydroxide
3. Silicophosphate
4. Gutta percha
Radiology
Answer: 3
Which of the following has a radiolucency closest to the dentin: silicophosphate.
The sialographic appearance of a normal salivary gland is
1. Branching with bloom
2. Branching with leaves
3. Branchless with fruit-laden
4. Branchless with leaves
Radiology
Answer: 1
The sialographic appearance of a normal salivary gland is branching with bloom.
The following kVp setting produce greatest contrast in radiograph image
1. 70 kVp
2. 80 kVp
3. 90 kVp
4. 100 kVp
Radiology
Answer: 1
The kVp setting that produces the greatest contrast in a radiograph image is 70 kVp.
Loss of lamina dura and ground glass appearance of bone is an early radiographic feature of
1. Osteogenesis imperfecta
2. Hyperparathyroidism
3. Osteopetrosis
4. Osteitis deformans
Radiology
Answer: 2
Loss of lamina dura and ground glass appearance of bone is an early radiographic feature of hyperparathyroidism.