Facial Bones
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| What is the routine done for facial bones? | Waters (parietoacantial), hard lateral, soft lateral, caldwell, SMV (zygomatic arches)
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| Where does the CR exit on the waters facial bones? | Exits the acanthion
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| What is the patients position for the waters facial bones? | patient is prone or seated. Chin rested on table. MML perpendicular. OML forms 37 degree angle to film
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| If positioning for the waters facial bones is correct, the OML will form a _____ angle to film. | 37 degree
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| What is demonstrated in the waters facial bones? | Petrous ridges below maxillae, orbits, maxillae and zygomatic arches
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| What is the difference between the hard lateral and soft lateral facial boens? | Hard lateral we are demonstrating all the sinuses and in the soft lateral we are demonstrating the soft tissue of the nasal bones, nasion and acanthion
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| Where does the CR enter for the hard/soft lateal facial bones? | Enter perpendicular to lateal surface of zygoma
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| Which line is perpendicular and which is parallel to the film in the lateral facial bones? | IPL perpendicular, IOML parallel (MSP horizontal)
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| What kind of technique is used for the soft lateral facial bones? | manual technique, table top 55@ 2.5 (finger technique)
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| Describe the patients position for the SMV zygomatic arches. | Patient is supine or upright, extend neck back, IOML parallel to film
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| Describe the entrance of the CR for the SMV zygomatic arches. | Perpendicular to IOML, Passing midway through zygomatic arches.
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| Zygomatic arches free from overlying structures, Zygomatic arches symmetric and without forshortening and no rotation of head. This is what is demonstrated in what projection? | SMV zygomatic arches
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| In this view the patient is placed PA (preferred) with the OML perpendicular, MSP perpendicular. | CALDWELL
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| CR is angled ___ degrees ____ exiting the ____ in the Caldwell Facial bones. | 15, caudal, nasion
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| If the patient is unable to be placed in the PA caldwell, what can be done? | AP caldwell
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| What is the major difference between the AP caldwell and PA caldwell facial bones? | the angle of the central ray (PA - caudal; AP - cephalic)
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| In the PA caldwell where are the petrous ridges? | Lower 1/3 of the orbit
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