1.
A PA with the OML perpendicular and the central ray angled 30° caudad will demonstrate: the orbital floor in profile
2.
At what level do the carotid arteries bifurcate?: C4
3.
Blowout fractures of the orbit are best demonstrated using the: parietoacanthial projection (Waters' method)
4.
Blowout fractures of the orbital floor are well demonstrated by using: Waters' method [parietoacanthial (PA) projection] and by using tomographic studies.
5.
During studies of the soft tissue of the neck, the exposure can be made: 1. during phonation before/after opacification.
2. during Valsalva maneuver.
3. at the height of swallowing motion with opacification.
6.
ethmoidal sinuses: visualized using the PA axial projection (Caldwell method)
7.
frontal sinuses: visualized using the PA axial projection (Caldwell method)
8.
In a lateral projection of the nasal bones, the central ray is directed: 3/4 inch distal to the nasion
9.
in a routine lateral projection of the skull the patient is placed in a: PA oblique position
10.
In a routine lateral projection of the skull, the central ray should enter approximately: 2 inches superior to the EAM.
11.
in the AP axial projection (Grashey method) of the skull if the central ray is angled excessively,: the posterior aspect of the arch of C1 will appear in the foramen magnum.
12.
Lateral deviation of the nasal septum may be best demonstrated in the: parietoacanthial (Waters' method) projection
13.
Major branches of the common carotid arteries (internal carotids) function to: supply the anterior brain, while the posterior brain is supplied by the vertebral arteries (branches of the subclavian)
14.
maxillary sinuses: best demonstrated using the parietoacanthial projection (Waters' method)
15.
Performance of the Valsalva maneuver: fills the larynx and trachea with air, which is then well demonstrated on soft tissue study
16.
Pharyngeal structures are demonstrated during: swallowing motion
17.
Phonation of various vowel sounds, with or without contrast media opacification, can help demonstrate: the vocal cords
18.
Soft tissue neck studies can be performed for a number of reasons including: to determine presence of foreign body or to evaluate the swallowing mechanism following a stroke event.
19.
sphenoidal sinuses: well demonstrated in the SMV projection
20.
Sweet's localization method shows: exact placement of foreign bodies within the eye
21.
The AP axial projection (Grashey method) of the skull: The frontal and facial bones are projected down and away from superimposition on the occipital bone. If positioning is accurate, the dorsum sella and posterior clinoid processes will be demonstrated within the foramen magnum.
22.
The AP axial projection (Grashey method) of the skull requires that the central ray be: angled 30° caudad if the OML is perpendicular to the image receptor (37° caudad if the IOML is perpendicular to the image receptor)
23.
The AP axial projection is used to demonstrate: the occipital bone
24.
The carotid arteries bifurcate into internal and external carotid arteries at the level of: C4
25.
The common carotid arteries function to: supply oxygenated blood to the head and neck
26.
The lateral projection demonstrates: the four pairs of paranasal sinuses superimposed on each other.
27.
the PA axial (Caldwell method) projection: superimposes the petrous structures over the nasal septum, while the lateral projection superimposes and obscures good visualization of the septum
28.
The parietoacanthial projection (Waters' method) demonstrates: a distorted view of the frontal and ethmoidal sinuses. The maxillary sinuses are well demonstrated, projected free of the petrous pyramids. This is also the best single position for the demonstration of facial bones.
29.
The true lateral position of the skull uses which of the following principles?: 1. Interpupillary line perpendicular to the IR
2. Infraorbitomeatal line (IOML) parallel to the transverse axis of the IR
30.
Which of the following structures should be visualized through the foramen magnum in the AP axial projection (Grashey method) of the skull for occipital bone?: 1. Posterior clinoid processes
2. Dorsum sella
31.
With the patient in the PA position, the rami can be better demonstrated with: 20° to 25° cephalad angulation
