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Head Question's

QuestionAnswer
Which of the following statements is (are) true regarding the PA axial projection of the paranasal sinuses? CR and OML form a 15 degree angle with the horizontal beam. The petrous pyramids are projected into the lower third of the orbits. The frontal sinuses are visualized.
Which of the following positions/projections of the skull will result in the most shape distortion? 37° Towne
The hard palate is formed by the Maxillary bone. Palatine bone.
Glossitis refers to inflammation of the Tongue
With the patient's head in a PA position and the CR directed 20 degrees cephalad, which part of the mandible will be best visualized? Rami
Lateral deviation of the nasal septum may be best demonstrated in the Parietoacanthal (Waters method) projection
To demonstrate the mandibular body in the PA position, the CR is directed perpendicular to the IR.
The four major arteries supplying the brain include the common carotid arteries vertebral arteries
Standard radiographic protocols may be reduced to include two views, at right angles to each other, in which of the following situations? Emergency and trauma radiography
The true lateral position of the skull uses which of the following principles? Interpupillary line perpendicular to the IR. Infraorbitomeatal line (IOML) parallel to the transverse axis of the IR.
When modifying the PA axial projection of the skull to demonstrate superior orbital fissures, the central ray is directed 20° to 25° caudad.
Angulation of the central ray may be required to avoid superimposition of overlying structures. to avoid foreshortening or self-superimposition. to project through certain articulations.
Which of the following statements is (are) true regarding a PA projection of the paranasal sinuses? The OML is elevated 15 degrees from the horizontal. The frontal and ethmoidal sinuses are visualized.
Which of the following statements is (are) true regarding the PA axial projection (Caldwell position) of the facial bones? The OML is perpendicular to the IR. The petrous pyramids are projected into the lower third of the orbits. The CR is directed 15° caudad, exiting the nasion.
The junction of the sagittal and coronal sutures is the Bregma
In a lateral projection of the nasal bones, the CR is directed 1/2 inch distal to the nasion
The submentovertical (SMV) oblique axial projection of the zygomatic arches requires that the skull be rotated 15 degrees toward the affected side.
With a patient in the PA position and the OML perpendicular to the table, a 15- to 20-degree caudal angulation would place the petrous ridges in the lower third of the orbit. To achieve the same result in a baby or a small child, it is necessary to? 10 to 15 degrees caudal
Which of the following positions demonstrates all the paranasal sinuses? Lateral
The auditory, or eustachian, tube extends from the nasopharynx to the Middle Ear
Which of the following skull positions will demonstrate the cranial base, sphenoidal sinuses, atlas, and odontoid process? Submentovertical (SMV)
If your patient is unable to stay erect for a paranasal sinus examination, which of the following alternatives should be chosen? Lateral cross-table recumbent
In the AP axial projection (Towne method) of the skull, with the CR directed 30 degrees caudad to the orbitomeatal line (OML) and passing midway between the external auditory meati, which of the following is best demonstrated? Occipital Bone
Which of the following positions is essential in radiography of the paranasal sinuses? Erect
The structures forming the brain stem include the pons the medulla oblongata the midbrain
When evaluating a PA axial projection of the skull with a 15-degree caudal angle, the radiographer should see petrous pyramids in the lower third of the orbits. equal distance from the lateral border of the skull to the lateral rim of the orbit bilaterally. symmetrical petrous pyramids.
All the following statements regarding an exact PA projection of the skull are true except the midsagittal plane (MSP) is parallel to the IR.
The floor of the cranium includes all the following bones except the occipital bone
Which of the following positions is/are most frequently used to demonstrate the sphenoid sinuses? Modified Waters (mouth open). Lateral.
Which of the following sinus groups is demonstrated with the patient positioned as for a parietoacanthal projection (Waters method) with the CR directed through the patient's open mouth? Sphenoidal
Which of the following structures should be visualized through the foramen magnum in an AP axial projection (Towne method) of the skull for occipital bone? Posterior clinoid processes. Dorsum sella.
With the patient in the PA position and the OML and CR perpendicular to the IR, the resulting radiograph will demonstrate the petrous pyramids completely within the orbits
Which of the following statements is (are) correct regarding the parietoacanthial projection (Waters' method) of the skull? The head is rested on the extended chin. The maxillary antra should be projected above the petrosa.
Structures involved in blowout fractures include the orbital floor. inferior rectus muscle.
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