MDS PREP
For maintaining parallelism between the object and film, film is placed at a distance to avoid distortion, what should be done
1. Increase target to object distance
2. Decrease target to object distance
3. Both of the above
4. None of the above
Radiology
Answer: 1
For maintaining parallelism between the object and film, the film is placed at a distance to avoid distortion by increasing the target to object distance.
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.
Which of the following imaging techniques cannot differentiate benign and malignant tumours of salivary gland
1. Scintigraphy
2. CT scan
3. MRI
4. Sialography
Radiology
Answer: 1
Scintigraphy cannot differentiate benign and malignant tumours of the salivary gland.
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
Radiology
Answer: 3
In a panoramic radiograph, a smiling appearance of structures occurs if the patient's chin is tilted downward.
The radiographic view that has to be avoided in patients with cervical spondylitis
1. PA view
2. Submentovertex
3. Towne"s view
4. Occipito mentalview
Radiology
Answer: 2
The radiographic view that has to be avoided in patients with cervical spondylitis is Submentovertex.
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.
Ankylosis of TMJ can be best viewed in
1. Lateral oblique view
2. Lateral view
3. Transcranial
4. PA view
Radiology
Answer: 3
Ankylosis of TMJ can be best viewed in transcranial view.
Which of the following is called as basic "sectional" or "slice" radiography
1) Othopantomography
2) Cephalogram
3) Tomography
4) All of the above
Radiology
Answer: 3
Tomography is a diagnostic imaging method that is often referred to as basic
"sectional" or "slice" radiography. It involves taking a series of
two-dimensional images of a specific area or "slice" of the body, using a narrow
beam of radiation that passes through the body from multiple angles. These
images are then combined to create a detailed, cross-sectional view of the
internal structures, allowing for the visualization of the body without the
superimposition of structures outside the area of interest. This technique is
particularly useful for diagnosing conditions that may not be apparent on
standard X-rays.
Explanation of the other options:
1) Othopantomography: This is a type of panoramic radiography used to capture a
wide-angle view of the teeth, jaw, and other oral structures. While it does
produce an image of a "section" of the body, it is not typically referred to as
"sectional" or "slice" radiography in the same sense as tomography, as it does
not involve the same layering or cross-sectional approach.
2) Cephalogram: A cephalogram is a specific type of X-ray used in dentistry and
orthodontics to examine the soft tissues and bones of the face and head,
particularly the skull and jaw. It provides a two-dimensional, flat
representation of the head from the side view, and while it is a form of
radiography, it does not produce the layered or cross-sectional images that are
characteristic of tomography.