Cranial Bones Positioning
For the parietoacanthial projection, this line is perpendicular to the IR
What is MML
The sphenoid bone holds this structure known as the Turkish saddle
what is sella turcica
this projection demonstrates all the sinuses
what is lateral
a benign tumor of the auditory nerve sheath that originates in the internal auditory canal?
what is acoustic neuroma
these are called soft spots on infants that eventually fuse
what are fontanels
this line is parallel to the IR when positioning the SMV
what is the IOML
7 bones surround this facial structure
what is the orbit
For parietoacanthial projection, the CR exits the__
what is the acanthion
A fracture on one side that is caused by an impact from the other side
Contracoup fracture
The central ray angle for a PA Axial (Caldwell) projection
what is 15 degrees caudal
what position requires you to extend the patient's head back and align the CR perpendicular to the IOML
what is SMV
the superior portion of the nasal septum if formed by the perpendicular plate of the
what is ethmoid bone
the amount of facial bones
what is 14
Benign, cyst-like mass found in the middle ear secondary to trauma
Cholesteatome
the petrous ridges show up in the lower 1/3 of the orbits in this projection
PA axial Caldwell
CR is 2 inches above the EAM
what is lateral skull
This skull type is long from front to back and barrow from side to side
what is Dolichocephalic
this view demonstrates maxillary and frontal sinuses
what is Parietoacanthial (Waters)
parietal and temporal bones are separated by this suture
what is squamosal
An AP cranial projection can be distinguished from a PA cranial projection because it demonstrates which of the following?
Less distance from the lateral orbital margins to the lateral cranial cortices.
the dorsum sellae are visualized in the foramen magnum in this view
AP axial Townes
The degrees of difference between the infraorbital meatal line and the orbital meatal line
what is 7
This view shows the sphenoid, ethmoid, and maxillary sinuses
what is SMV
this cranial bone touches all the other cranial bones
what is sphenoid
The glabella, mental point, acanthion, and nasion each form an invisible line to this point
what is external acoustic meatus