Headwork Lab Testing Positioning

Lateral Skull

40” SID, 10” x 12” cw collimation, ensure IOML, interpupillary line, and MSP are properly aligned, center at MCP and 2” above EAM

PA Axial Skull (Caldwell)

40” SID, 10” x 12” collimation, 75º tube angle, nose and forehead in contact, OML perpendicular to IR, entering at MSP and exiting through nasion

AP Axial Skull (Towne)

40” SID, 10” x 12” lw collimation, 60º tube angle, OML perpendicular to the IR (chin tuck), place sponge behind head, centering 2.5” above glabella at MSP

Lateral Sinuses

40” SID, 8” x 10” lw collimation, 1” posterior to outer canthus at the level of the outer canthus

Parietoacanthial Sinuses (Waters)

40” SID, 8” x 10” lw collimation, chin in contact with bucky, MML perpendicular to IR, OML in a 37º relationship with IR, Central ray exiting through the acanthion

SMV Sinuses

40” SID, 8” x 10” lw collimation, centering at the angle of the mandible

Parietoacanthial Orbits (Modified Waters)

40” SID, 8” x 10” lw collimation, chin and nose in contact with IR, ensure 50º relationship between IR and OML, centering at MSP and exiting through the orbits

PA Skull

40” SID, 10” x 12” lw collimation, ensure OML is perpendicular to the IR, center at MSP and level of nasion

SMV Skull

40” SID, 10” x 12” lw collimation, centering at MSP and the angles of the mandible

Lateral Nasal Bones

40” SID, 3” x 3” lw collimation, centering to inner canthus

SMV Zygomatic Arches

40” SID, 8” x 10” cw collimation; centering at MSP and have the ray on the side of face 1” below outer canthus

Tangential Zygomatic Arches

40” SID, 6” x 10” lw collimation, start in SMV (off-center), and rotate head toward affected side 15º (use goniometer), centering at between lips and chin, 1” below outer canthus

Lateral Facial Bones

40” SID, 8” x 10” lw collimation, Centering point halfway between outer canthus and EAM (cheekbone), at the level of the EAM

Parietoacanthial Facial Bones (Waters)

40” SID, 8” x 10” lw collimation, chin in contact with bucky, MML perpendicular to IR, OML in a 37º relationship with IR, Central ray exiting through the acanthion

Modified Parietoacanthial Facial Bones (Waters)

40” SID, 8” x 10” lw collimation, tip of chin in contact with IR, OML in 55º relationship with IR, central ray exiting through acanthion

PA Mandible (Ramus)

40” SID, 8” x 10” lw, MSP and OML perpendicular to IR, centering to MSP and exiting through acanthion

PA Axial Mandible (Ramus)

40” SID, 8” x 10” lw collimation, 25º cephalic angle (115º on tube), MSP And OML perpendicular to IR, centering at MSP and exiting through acanthion

Axiolateral Oblique Mandible (Ramus)

40” SID, 8” x 10” cw collimation, STANDING, 25º cephalic angle, head in true lateral, IPL perpendicular, entering through gonion, exiting through ramus closest to IR