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Mandible and Orbits

Mandible and Orbits

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Mandible and Orbits

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  1. Mandible and Orbits

  2. Things to know for mandible • 3 views • AP, • AP Axial, • Axiolateral • Page 404-406

  3. Cassette • 8x 10 lengthwise

  4. AP Mandible • Patient supine on table • Midline with midline • Tuck chin until the OML is perpendicular with IR • No rotation or tilt

  5. CR is perpendicular to junction of lips SID 40

  6. What is seen • Mandibular rami • Lateral portion of body

  7. AP Axial • 8 x 10 lengthwise • Shield • Marker • 80@16 • Hold breath

  8. Positioning • Patient supine • Midline to midline • Tuck chin to OML is perpendicular • No rotation or tilt

  9. CR is angled 35-40 Degrees Caudad Entering at the Glabella SID 40

  10. What to look for • Condyloid processes • Temporomandibular fossae

  11. Axiolateral • 8 x 10 Crosswise • 75 @ 5 • Shield • Marker • Hold breath • Collimate to mandible

  12. Positioning • Rotate the head in a lateral position. ( sometime body has to roll) • Side of interest on table. • Extend neck so no imposition of spine

  13. CR is angled 25 degrees cephalad Exit the region of interest Sid 40

  14. Seen on Film • Rami • Body • And mentum nearest the film

  15. Orbits • One View Rhese Method • 8x10 • Shield • Marker • 80 @ 18 • Hold breath • Collimate to area of interest

  16. Positioning • Patient prone on table • Place patient’s chin, check and nose against table • The mid sagittal plane froms a 53 degrees angle with IR • Acanthiomeatal line perpendicualr to IR

  17. CR perpendicular to the downside orbit SID 40

  18. Seen on film • Optic canal • Optic foramen