PROCEDURES- Skull Flashcards
Which cranial bone is the most posterior?
occipital bone
Which projection best demonstrates the maxillary sinuses?
parietoacanthial (waters method)
A blow-out fracture involves the
floor of the orbit
Which of the following are facial bones? 1. vomer 2. mandible 3. ethmoid
1 and 2
Which of the following bones are categorized as cranial bones? 1. maxilla 2. ethmoid 3. parietal
2 and 3
What common positioning landmark is located on the anterior, lower margin of the mandible?
mental protuberance
When taking a PA Axial projection (Caldwell method) of the skull, the central ray is directed
15 degrees caudad
Which radiographic baseline is used to position the PA Axial projection (Caldwell method) of the cranium?
OML
Which paranasal sinuses are best demonstrated on the PA Axial projection (Caldwell method)? 1. maxillary 2. frontal 3. ethmoid
2 and 3
Which paranasal sinuses are demonstrated by the lateral projection? 1. sphenoid 2. frontal 3. ethmoid
1, 2, and 3
Which projection of the facial bones requires the CR to exit the acanthion?
PA Axial (waters method)
Which facial bone often sustains fractures in pairs?
mandible
Which of the following projections demonstrates the sphenoid sinus?
lateral
What cranial structures are best demonstrated by the SMV projection?
the cranial base
The sella turcica is located on the __ bone
sphenoid
When the right and left halves of the skull do not appear symmetrical on a PA or AP projection, this is a sign that the
sagittal plane is not perpendicular to the IR
The bony prominence on the frontal bone between the eyebrows is called the
glabella
The petrous pyramid is a portion of which bone?
temporal bone
Which projection of the cranium demonstrates the petrous ridges within the orbits?
PA
Which facial bones help to form the hard palate of the mouth?
palatine
Where is the sagittal suture?
between the right and left parietal bones
Which of the following is the positioning landmark located at the junction of the nose and the upper lip?
acanthion
Which projection demonstrates all of the paranasal sinuses?
lateral
Which cranial bone has a dense, pyramid of bone that houses the middle and inner structures?
temporal bone
The patient is in a prone, oblique position with the midsagittal plane of the head parallel to the IR and the interpupillary line perpendicular to the IR. The CR is directed perpendicular to to enter 2 inches superior to the EAM. What projection of the cranium is demonstrated in the radiograph?
lateral
