Radiography: Head Flashcards
When used in the context of radiographic positioning techniques, what does the term cephalic refer to?
Angled towards the head
What part of the anatomy is referred to as the lateral canthus?
The outer angle of the eye
A patient has just undergone series of radiographs of their facial bones. The radiologist points out a fracture of the ethmoid bone. What are the anatomical components of a fractured ethmoid bone?
**The crista galli and the upper nasal cavity **
What is the largest facial bone?
**The mandible **
The ____________ is the point located at the junction of the nose and the upper lip.
**acanthion **
When performing an anteroposterior axial projection/view (the Towne method) of the skull, the central ray of the X-ray beam should be angled ________ caudad to center of the image receptor, through the foramen magnum, at the level of the external auditory meatus.
30°
When performing a parietoacanthial projection/view (the Waters method), the mentomeatal line should be perpendicular to the image receptor, while the orbitomeatal line forms a ________ angle to the image receptor.
37°
When performing a posteroanterior axial projection/view (the Caldwell method) of the cranium, the orbitomeatal should be perpendicular to the image receptor, while the central ray of the X-ray beam should be angled ________ caudad to the center of the image receptor through the nasion.
15°
Which skull radiography positioning baseline extends from the outer corner of the eye to the external auditory meatus?
**The orbitomeatal line **
When performing a submentovertex (full basal) projection/view of the skull, what positioning baseline is parallel to the plane of the image receptor?
The infraorbitomeatal line
When performing a tangential projection/view of the zygomatic arches, the head should be rotated approximately ____ towards the affected side and approximately ____ away from the affected side.
15° towards and 15° away
Which parieto-orbital oblique projection/view that allows visualization of the optic foramen and canal?
The Rhese projection/view
Which radiographic projection/view is used to BEST visualize the sphenoid sinuses?
The submentovertical (SMV) view
When performed correctly, what radiographic projection/view features the petrous pyramids filling the lower one-third of the orbits?
The posteroanterior (Caldwell) view
Which radiographic projection/view is used to BEST visualize the maxillary sinuses?
The Waters view
