Projections
Structures Shown
Pathology
Central Ray
Localization Landmarks
100

Caldwell Method

What is PA Axial?

100

Lateral Skull

What are sella turcica, anterior clinoid processes, dorsum sellae, and posterior clinoid processes?

100

Basal Fracture

What is a fracture located at the base of the skull?

100

Lateral Skull

What is 2 inches superior to the EAM?

100

Outer Canthus

What is the outer corner of the eye?

200

Reverse Caldwell Method 

What is AP Axial?
200

PA Axial Skull

What are petrous pyramids in lower 1/3 of orbits, Posterior ethmoidal air cells, christa galli, frontal bone and frontal sinuses?

200

Le Fort

What is Bilateral horizontal fractures of the maxillae?

200

AP Axial Skull

What is directed 15 degrees caudad exiting the nasion?

200

IPL

What is the interpupillary line?


300

Towne Method

What is AP Axial?

300

AP Axial Skull 

What are symmetric petrous pyramids, post portion of foramen magnum, dorsum sellae, post clinoid process within foramen magnum, occipital bone, and post portion of the parietal bones?

300

Tripod

What is fx of the zygomatic arch and orbital floor or rim and dislocation of the frontozygomatic suture?

300
Towne Method

What is 2 1/2 inches above the glabella and passes through the level of the EAM?

300

IOML

What is the infraorbitomeatal line?

400

Schuller Method

What is Submentovertical Projection?

400

SMV

What are Symmetric images of petrosae, mastoid processes, the foramina ovale and spinosum, carotid canals, sphenoidal and ethmoidal sinuses, mandible, bony nasal septum, dens of axis and occipital bones? 

400

Contrecoup

What is fx to one side of a structure caused by trauma to the other side?

400

Lateral Facial Bones

What is perpendicular and entering the lateral surface of the zygomatic bone half-way between the outer canthus and the EAM?

400

AML

What is the acanthiomeatal line?

500

Waters Method

What is Parietoacanthial Projection?

500

Lateral Facial Bones

What is a lateral image of the bones of the face, with the right and left sides superimposed?

500

Blowout

What is fx of the floor of the orbit?

500

Lateral Nasal Bones 

What is perpendicular to the bridge of the nose at a point 1 inch distal to the nasion?

500

MML

What is the Mentomeatal Line?