Skull Positioning Flashcards

AP Axial Skull (Towne Method) pt/part position

pt erect, depress chin so OML is perpend to IR & align MSP to midline

AP Axial Skull (Towne Method) CR

30 deg caudad to OML, @ MSP 2 ½” above glabella

AP Axial Skull (Towne Method) SID & FOV

40” SID, 10 ×12 LW

Right or Left Lateral Skull pt/part position

pt erect, side of interest closest to IR, align MSP parallel to IR & IPL perpend to IR

Right or Left Lateral Skull CR

2” above EAM (or halfway btwn glabella and inion)

Right or Left Lateral Skull SID and FOV

40” SID, 10 × 12 LW

PA Axial Skull (Caldwell Method) pt/part position

pt erect, rest pt nose & forehead against IR, flex neck so OML perpend to IR, MSP perpend to IR

PA Axial Skull (Caldwell Method) CR

15 deg caudal, center to exit at nasion

PA Skull pt/part position

pt erect, nose & forehead against IR, flex neck so OML perpend to IR, MSP perpend to midline of IR

PA Axial Skull (Caldwell Method) CR

centered to exit @ glabella

Right or Left Lateral Facial Bones pt/part position

pt erect, true lat position w/ side of interest closest to IR, align MSP parallel to IR & IPL perpend to IR

Right or Left Lateral Facial Bones pt/part position

pt erect, true lat position w/ side of interest closest to IR, align MSP parallel to IR & IPL perpendicular to IR

Right or Left Lateral Facial Bones CR

@ zygoma / midway btwn outer canthus & EAM

Right or Left Lateral Facial Bones SID & FOV

40” SID, 8 × 10 LW

Parietocanthial Facial Bones (Waters Method) pt/part position

pt erect, chin up against IR, MML perpend to IR, MSP perpend to midline of IR

Parietocanthial Facial Bones (Waters Method) CR

center to exit @ acanthion

Parietocanthial Facial Bones (Waters Method) SID & FOV

40” SID, 8 × 10 or 10 × 12 LW

PA Axial Facial Bones (Caldwell Method) pt/part position

tuck chin, nose, & forehead against IR, OML & MSP perpend to IR

PA Axial Facial Bones (Caldwell Method) CR

15 deg caudad, centered to exit @ nasion

PA Axial Facial Bones (Caldwell Method) SID & FOV

40” SID, 8 × 10 or 10 × 12 LW

Lateral Nasal Bones pt/part position

pt erect, true lat w/ side of interest closet to IR & nasal bones centered to IR, MSP parallel, IPL perpend to IR

Lateral Nasal Bones CR

½ “ below nasion

Lateral Nasal Bones SID & FOV

40” SID, 8 × 10 CW

Submentoverticular (SMV) Zygomatic Arches pt/part postion

pt erect, raise chin & hyperextend neck so IOML is parallel to IR & MSP perpend to midline of IR

Submentoverticular (SMV) Zygomatic Arches CR

midway btwn zygomatic arches, 1 ½ ” inferior to mandibular symphysis

Submentoverticular (SMV) Zygomatic Arches SID & FOV

40” SID, 8 × 10 CW

Oblique Inferosuperior (Tangential) Zygomatic Arches pt/part position

pt erect, raise chin & hyperextend neck so IOML is parallel to IR rotate head & tilt chin 15 deg toward side of interest

Submentoverticular (SMV) Zygomatic Arches FOV

8 × 10 LW

AP Axial Zygomatic Arches (Modified Towne Method) pt/part position

pt back to board, tuck chin so OML & MSP perpend to IR

AP Axial Zygomatic Arches (Modified Towne Method) CR

30 deg caudad to OML, @ 1” above nasion

AP Axial Zygomatic Arches (Modified Towne Method) FOV

8 × 10 LW

Parieto-orbital Oblique (Rhese method) pt/part position

pt erect, start w/ MSP perpend to IR, then adjust flexion & extention w/ chin, cheek, & nose touching IR, rotate head 37 deg toward affected side

Parieto-orbital Oblique (Rhese method) CR

midpoint of downside orbit

Parieto-orbital Oblique (Rhese method) FOV

8 × 10 CW

PA or PA Axial Mandible pt/part position

pt erect, nose & forehead to board, tuck chin to bring OML & MSP perpend to IR

PA Mandible CR

centered to exit @ junction of lips

PA Axial Mandible

20-25 deg cephalad, centered to exit @ acanthion

PA or PA Axial Mandible FOV

8 × 10 or 10 × 12 LW

AP Axial Mandible (Towne method) pt/part position

pt erect w/ back of skull against board, OML & MSP perpend to IR

AP Axial Mandible (Towne method) CR

35 caudad, 1” above glabella

AP Axial Mandible (Towne method) FOV

8 × 10 or 10 × 12 LW

AP Axial Temporomandibular Joints (modified Towne method) pt/part position

pt erect, back of skull against IR, tuck chin so OML perpend to IR, MSP perpend to IR

AP Axial Temporomandibular Joints (modified Towne method) CR

35 deg caudad from OML & 3” superior to hasion

AP Axial Temporomandibular Joints (modified Towne method) FOV

8 × 10 CW

Lateral Right or Left Sinuses pt/part postion

pt lat erect, align IPL perpend to IR

Lateral Right or Left Sinuses CR

HORIZONTAL BEAM to midway btwn outer canthus & EAM

Lateral Right or Left Sinuses FOV

8 × 10 LW

PA Sinuses (Caldwell method)

pt erect w/ nose & forehead against IR w/ neck extended to elevate OML 15 deg from horizontal, put MSP perpend to IR

PA Sinuses (Caldwell method) CR

HORIZONTAL BEAM centered to exit @ nasion

PA Sinuses (Caldwell method) FOV

8 × 10 LW

Parietocanthial Sinuses (Waters method) pt/part position

pt erect, extend neck w/ nose & chin up against IR, MML perpend to IR, MSP perpend to IR

Parietocanthial Sinuses (Waters method) CR

HORIZONTAL BEAM to exit @ acanthion

Parietocanthial Sinuses (Waters method) FOV

8 × 10 or 10 × 12 LW