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facial bones
positioning
Question | Answer |
---|---|
For lateral projection of facial bones, what plane is perpendicular with the front edge of the IR? | IOML |
For lateral projection of the facial bones, where is the CR centered? | zygomatic bone halfway btwn the outer canthus and the EAM |
In the lateral projection of the facial bones, what is clearly demonstrated? | all facial bones with the zygomatic in the center |
What is the common name for the parietocanthial projection? | Waters |
When using the Waters projection, what angle is the OML at compared to the IR? | 37 deg |
When using the waters projection, which line is perpendicular to the IR plane? | MML |
For the Waters projection, what is centered to the IR? | acamthion |
In the Waters projection, which facial bones are clearly demonstrated? | orbits, maxillae, zygomatic arches |
When using the modified waters, what angle is the OML at? | 55 deg |
What is another name for theacanthioparietal projection? | Reverse Waters |
In the reverse waters, which plane is perpendicular to the IR? | MML |
What is the CR angle for the Reverse Waters? | 0 deg |
On a trauma patient when using the reverse Waters, how is the MML positioned to obtian the image? | parrallel |
For a lateral projection of the Nasal bones, what plane is parrallel to the IR | midsagittal |
Why do both sides need to be done when doing a lateral of nasal bones? | for comparison |
in the lateral projection of the nasal bones, which line is perpendicular to the IR? | IOML |
When doing an SMV projection of the zygomatic arches, which lines is perpendicular to the CR? | IOML |
Which projection demonstrates both of the zygomatic arches? | SMV |
in the tangential projection of the zygomatic arches, the head is positioned so that the midsagittal plane is? | 15deg toward the side being examned |
When using the tangential projection of the zygomatic arches, the top of the head is tilted? | 15deg away from the side being examed |
When using the tangential projection of the zygomatic arches, the CR is perpendicular to which line? | IOML |
In an AP axial projection of the zygomatic arch, which line is perpendicular to the IR? | OML |
In an AP axial zygoamtic arch where does the CR enteres? | glabella, 1 in above the nasion |
In an AP axial of zygomatic arch what is the CR angle? | 30 deg caudad |
Which projection clearly demonstrates any medial or lateral displacement fractures of mandibular rami? | PA projection |
What is the CR angle for the PA axial madiblar rami? | 20-25 deg cephalad |
What is the CR angle for the axiolateral oblique projection of the mandible? | 25 deg cephalad |
Which line is perpendicular to the IR for the AP axial TMJ? | OML |
CR angle for AP axial TMJ? | 35 caudad |
Midsagittal plane of the head is rotated ____ for axiolateral oblique projection of TMJ. | 15 deg |
Cr angle for axiolateral oblique TMJ? | 25-30 deg caudal |
For the Waters, what part of the face is touching the IR? | tip of chin |
Which line is parallel as possible to IF for SMV of zygomatic arch | IOML |
the CR is at what level for SMV of zygomatic arch? | Perpendicular to IOML enter midsagittal plane of throat 1in post to outer canthus |
CR at what level for tangential projection of zygomatic arch? | perpendicular to IOML and centered to zygomatic arch at 1 in posterior outer canthus |
_____ is perpendicular to the IR for PA & PA axial mandibular rami | OML |
How is the head positioned to demonstrate ramus at mandible? | true lateral position |
How is head positioned to demonstrate body of mandible? | 30deg toward IR |
How is the head positioned to demonstrate symphysis of mandible? | 45 deg toward IR |
________ projection best deomnstrates condyles & neck of mandible | axiolateral oblique |