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Facial Bones Orbits
Positioning of the skull for facial bones and orbits for Xray
Question | Answer |
---|---|
Where should you center for a PA Rheese View of the Orbits | The CR is perpendicular to the IR; exits mid-portion of downside orbit. |
What anatomy is demonstrated on a PA Rheese View of the Orbits? | Optic foramen & canal; lateral orbit rim with optic foramen in lower outer quadrant of orbit. |
What is the proper patient position for a PA Rheese Orbits? | Head rotated 37 degrees with Nose, Cheek & Chin resting on IR; AML is perpendicular to the IR; midsagittal plane will form a 53 degree angle to IR |
What is the proper patient position for a PA Caldwell Facial Bones? | Nose & forehead against IR, OML perpendicular to IR. |
What anatomy is demonstrated on a Lateral Facial Bones? | Superimposed facial bones- greater wings of sphenoid, orbital roofs, zygomas, anterior & posterior clinoids , mandible, sella turcica, dorsum sellae & all 4 sinuses |
Where should you center on an inferosuperior Tangential* of the zygomatic arches? | CR is perpendicular to IR; skims mandibular ramus. |
What anatomy is demonstrated on a Lateral Nasal Bones? | R & L Nasal bones with soft tissue structures, frontonasal suture, anterior nasal spine. |
What is the proper patient position for an SMV Zygomatic Arches? | Neck extended & head back until IOML parallel to IR. |
What anatomy is demonstrated on an SMV Zygomatic Arches? | Inferosuperior view of both zygomatic arches. |
What position should the patient be in for a Lateral Nasal Bones? | Interpupillary line is perpendicular to IR; midsagittal plane of head parallel to IR; adjust neck so that IOML is perpendicular to the front edge of IR. |
Where should you center for a PA Waters Facial Bones? | CR is perpendicular to IR; exits acanthion. |
What anatomy is demonstrated on an Inferosuperior Tangential Zygomatic Arches? | Elongated inferosuperior view of one zygomatic arch. |
What position should the patient be in for a PA Waters Facial Bones? | Chin against IR; MML perpendicular to IR; OML will form 37 degree angle to plane of IR |
What position should the patient be in for a Lateral Facial Bones? | Interpupillary line is perpendicular to IR; midsagittal plane of head parallel to IR; adjust neck so that IOML is perpendicular to the front edge of IR. |
Where should you center for a PA Modified Waters Facial Bones? | CR is perpendicular to IR; exits acanthion. |
Where should you center for an SMV Zygomatic Arches? | CR is perpendicular to IR; enters 1.5" inferior to mandibular symphysis midway between zygoma. |
What is the proper patient position for an Inferosuperior Tangential* Zygomatic Arches. | Neck extended & head back until IOML parallel to IR; head rotated 15 degrees toward side of interest & tilted 15 degrees toward affected side. |
What anatomy is demonstrated on a PA Modified Waters Facial Bones? | Orbital floors & entire orbital rim; petrous pyramids in lower half of maxillary sinuses. |
Where should you center for a Lateral Nasal Bones? | CR is perpendicular to IR; enters 1/2" inferior to nasion. |
What anatomy is demonstrated on a PA Waters Facial Bones? | Inferior orbital rim, maxillae, nasal septum, zygomatic arches, anterior nasal spine, maxillary sinuses; petrous pyramids inferior to maxillary sinuses. |
What is the proper patient position for a PA Modified Facial Bones? | Chin & Nose against IR; LML is perpendicular to IR; OML will form a 55 degree angle to plane of IR. |
Where should you center for a Lateral Facial Bones? | CR is perpendicular to IR; enters zygoma, midway between outer canthus & EAM. |
Where should you center for a Lateral Nasal Bones? | CR is perpendicular to IR; enters 1/2" inferior to nasion. |
What anatomy is demonstrated on a PA Caldwell Facial Bones? | Orbital rim, maxillae, nasal septum, zygomas, frontal sinus, anterior nasal spine; petrous pyramids in lower 1/3 of orbits. |
Where should you center for a PA Caldwell Facial Bones? | CR is 15 degrees Caudal; exits nasion |
Where should you center for a AP Caldwell Facial Bones? | CR is 15 degrees Cephalad |
What anatomy is demonstrated on a Panorex Mandible? | Singular image of entire mandible, teeth, & TMJs |
Where should you center for a PA Mandible? | CR is perpendicular to IR; exits junction of lips. |
What position should the patient be in for an Axiolateral Oblique mandible? | Chin extended & head rotated laterally; (10-15 degree for a general survey, 30 degrees for body, 45 degrees for mentum) |
What anatomy is demonstrated on an AP Axial Townes Mandible? | The entire mandible, condyloid processes & tempromandibular fossae. |
Where should you center for an Axiolateral Oblique Mandible? | CR is 25 degrees Cephalad; enters mid-portion of mandible. |
What position should the patient be in for a Panorex Mandible? | Chin in holder with IOML parallel to the floor. |
Where should you center for an AP Axial Townes Mandible? | CR is 35-42 degrees Caudal; enters glabella (42-49 Caudal if IOML is perpendicular to IR) |
What anatomy is demonstrated on an Axiolareral Oblique Mandible? | One side of the mandible is free of superimposition |
Where should you center for a Panorex Mandible? | Tomogram (CR rotates in a sweep from one side of face to the other) |
What anatomy is demonstrated on a PA Mandible? | Entire mandible, rami, & lateral portions of body. |
What is the proper patient position for a PA Mandible? | Nose & forehead against IR; OML is perpendicular to IR |
What is the proper patient position for an AP Axial Townes Mandible? | Chin depressed until OML is perpendicular to IR (Use IOML if patient cannot tuck chin) |