MDS PREP
Light radiographic film is due to
1. Overdeveloping
2. Overfixing
3. Directly putting in fixer
4. Exposure to sunlight
Radiology Answer: 2
Overfixing occurs when the radiographic film remains in the fixing solution for an extended period, leading to excessive clearing of the image. Fixing agents, such as sodium thiosulfate, dissolve unexposed silver halide crystals. Prolonged exposure results in a lighter image as even some of the developed silver may be affected. Other options, such as overdeveloping, directly putting in fixer, or sunlight exposure, typically lead to other issues like dark films or fogging.
To discriminate objects with small density difference like CSF and blood the radiographic technique used is
1. CT scan
2. Pantamograph
3. Lateral cephalogram
4. None of the above
Radiology
Answer: 1
To discriminate objects with small density differences like CSF and blood, the radiographic technique used is CT scan.
Injecting radiopaque dye into the joint space to visualize the joint is referred to as
1. Arthroscopy
2. Arthrography
3. Orthropantomography
4. Arthroplasty
Radiology
Answer: 2
Injecting radiopaque dye into the joint space to visualize the joint is referred to as arthrography.
Objects which cause attenuation of X-ray beam are shown as............in image
1. Radiolucent
2. Radiopaque
3. Gray
4. None of the above
Radiology
Answer: 2
Objects which cause attenuation of X-ray beam are shown as radiopaque in an
image.
Radiopaque materials absorb or block X-rays, leading to a reduced transmission
of the X-ray beam. This results in the appearance of white areas or shadows on
the X-ray image, indicating the presence of dense structures like bone, metal
restorations, or calculi. Radiolucent structures, on the other hand, allow
X-rays to pass through more freely, resulting in dark areas on the image.
According to the American Society of Aneasthesiologists, the physical status of a patient with mild systemic disease that limits activity but no incapacitating may be classified as
1. ASA I
2. ASA II
3. ASA III
4. ASA IV
Radiology
Answer: 3
According to the American Society of Anesthesiologists, the physical status of a patient with mild systemic disease that limits activity but is not incapacitating may be classified as ASA II.
Lateral cephalogram is used for all of the following except
1. To assess where excessive growth is occuring
2. To compare the growth patterns with previous radiograph
3. To assess level of posterior alveolar bone
4. To assess soft tissue profile
Radiology
Answer: 3
A lateral cephalogram is used to assess the level of posterior alveolar bone.
Inventor of orthopantomographic machine is
1. Hounsfield
2. Roentgen
3. Kell
4. Namata
Radiology
Answer: 4
The inventor of the orthopantomographic machine is Namata.
When solution temperature is 20 degree celdcius recommended time of developing a X-ray film
1) 4 min
2) 4.5 min
3) 5 min
4) 6 min
Radiology
Answer: 2
The recommended time for developing an X-ray film at a solution temperature of 20 degrees Celsius is 4.5 minutes. This time may vary slightly depending on the specific developing solution and film type, but 4.5 minutes is the commonly suggested time to ensure proper exposure and development.