The Skull

Things to know 3 views AP AP axial Lateral

AP 10 X 12 lengthwise 80 @ 18 Shield Marker Hold breath

Positioning Patient Supine on table Flex neck until the OML is perpendicular to IR Mid line to Mid line No rotation or tilt

CR perpendicular Enter at Glabella SID 40 Collimate to outer skull

Seen on Film Frontal bone

AP Towne 10 X 12 lengthwise 80 @ 20 Shield Marker Hold breath

Positioning Patient supine on table Mid line to midline Depress chin until OML is perpendicular to IR No rotation or titling Ensure vertex of skull in light field

CR 30 Degrees caudad 2 1/1 inches above the glabella SID 40

Seen on film Occipital bone

Lateral 10 x 12 Crosswise 80 @ 10 Shield Marker Hold breath Collimate to skull margins

Positioning Patient is prone on table Turn head with side of interest near the IR Interpupillary line perpendicular to IR Mid-line to Mid-line No rotation or tilt Make sure the external occipital protuberance and the nasion or glabella is equal distance from table

CR perpendicular to IR 2 inches above the EAM SID 40

Seen on film Lateral cranium nearest IR Sella turcica in profile