Term
| What side of the face do you position against the IR for lateral facial bones? |
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Definition
The side of interest
side with injury |
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Term
| How should the facial bones appear on a lateral projection of the facial bones? |
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Definition
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Term
| What is the CR placement for lateral facial bones? |
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Definition
| perpendicular to the IR entering at the zygoma |
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Term
| What positioning line is perpendicular to the film when you are positioning for lateral facial bones? |
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Definition
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Term
| What is the Parietoacanthial projection? |
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Definition
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Term
| What positioning line is perpendicular to the IR when positioning the patient for the waters? |
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Definition
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Term
| What angle should the OML form with the surface of the IR when positioning for the waters method? |
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Definition
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Term
| What is the central ray placement for the waters method? |
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Definition
| CR perpendicular to the IR to exit at the acanthion |
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Term
| What structures are demonstrated on a waters method? |
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Definition
| inferior orbital rim, maxillae, nasal septum, zygomatic bones and arches, anterior nasal spine |
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Term
| What is another name for the PA Axial Projection? |
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Definition
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Term
| What positioning line is perpendicular to the IR for the Caldwell Method? |
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Definition
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Term
| What is the CR angle for the Caldwell? |
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Definition
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Term
| Where should the CR exit for the Caldwell Method? |
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Definition
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Term
| Where are the petrous ridges on a waters method |
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Definition
| below the maxillary sinus |
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Term
| Where are the petrous ridges for the Caldwell Method? |
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Definition
| In the lower 1/3 of the orbit |
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Term
| What is demonstrated on a Caldwell method? |
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Definition
| orbital rim, nasal septum, zygomatic bones, anterior nasal spine |
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Term
| What is the modified parietoacanthial projection? |
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Definition
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Term
| What positioning line is perpendicular to the IR when positioning for the modified waters? |
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Definition
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Term
| What angle does the LML form to the IR when positioning for a modified waters? |
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Definition
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Term
| what is the CR placement for a modified waters? |
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Definition
| perpendicular to the IR to exit at the acanthion |
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Term
| What does the modified waters provide a better view of than the waters? |
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Definition
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Term
| Where are the petrous ridges on a modified waters? |
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Definition
| lower 1/2 of the maxillary sinus |
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Term
| What is the CR placement for the nasal bones? |
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Definition
| 1/2in distal to the nasion |
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Term
| what do you include when you collimate for the nasal bones? |
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Definition
| the glabella, acanthion, and all soft tissue of the nose |
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Term
| What positioning line is parallel to the IR for the SMV? |
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Definition
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Term
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Definition
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Term
| Where do you place the IR for the SMV projection? |
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Definition
| 1 1/2 in inferior to the mandibular symphysis |
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Term
| What should be superimposed over the frontal bone for a SMV projection? |
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Definition
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Term
| Where should the mandibular condyles be in relation to the petrous ridges for a SMV projection? |
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Definition
| anterior or above the petrous ridges |
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Term
| What is another name for the modified towne method of the zygomatic arches? |
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Definition
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Term
| what positioning line do you use for the modified towne method? |
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Definition
| OML perpendicular to the IR |
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Term
| What is another name for the Rhese Method? |
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Definition
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Term
| Where is the CR placement for the Rhese method? |
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Definition
| perpendicular to the downside orbit |
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Term
| What is the angle between the MSP and the IR for the Rhese Method? |
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Definition
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Term
| What does the Rhese method best demonstrate? |
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Definition
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Term
| What positioning line is perpendicular to the IR for the Rhese Method? |
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Definition
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Term
| What do you place against the IR for the Rhese Method? |
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Definition
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Term
| What positioning line do you use for a modified towne method when the TMJs are the area of interest? |
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Definition
| OML perpendicular to the IR |
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Term
| What is the CR angle for the modified towne method when the TMJs are the area of interest? |
|
Definition
35 degrees caudad for OML
42 degrees caudad for IOML |
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Term
| What is the CR placement for the Law method? |
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Definition
| angle CR 15 degrees caudad, centered 1 1/2 in above the upside EAM |
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Term
| How many degrees to you rotate the patient from lateral for the law method? |
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Definition
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Term
| What sinuses are demonstrated on a lateral projection? |
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Definition
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Term
| How is the CR positioned for a Caldwell Method for the sinuses? |
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Definition
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Term
| What sinuses are best demonstrated on a Caldwell |
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Definition
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Term
| How do you position your patient for a Caldwell Method of the sinuses? |
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Definition
| Elevate the OML 15 degrees from horizontal |
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Term
| What sinuses are best demonstrated on the Waters Method? |
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Definition
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Term
| What sinuses are best demonstrated on the SMV? |
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Definition
| Sphenoid, ethmoid, and maxillary |
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Term
| What sinuses are best demonstrated on the open mouth waters? |
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Definition
| sphenoid through the open mouth and the maxillary |
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Term
| When doing a lateral mandible, what structure of the mandible would be best demonstrated? |
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Definition
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Term
| What does a 10-15 degree rotation of the head demonstrate on an axial mandible? |
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Definition
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Term
| What does a 45 degree rotation of the head demonstrate on an axial mandible? |
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Definition
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Term
| What does a 30 degree rotation of the head best demonstrate for an axial mandible? |
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Definition
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Term
| Why do you extend the chin for an axiolateral of the mandible? |
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Definition
| to prevent superimposition by the cervical spine |
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Term
| How do you angle the CR for an axiolateral of the mandible? |
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Definition
cephalic, CR angle and tilt must equal 25 degrees.
for example, 0 degree head tilt= 25 degree cephalic angle of CR
10 degree head tilt= 15 degree cephalic angle |
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Term
| How you you position the patient's head for a PA projection of the mandible? |
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Definition
| OML perpendicular to the IR |
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Term
| What is the CR placement for a PA mandible? |
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Definition
| CR perpendicular to the IR to exit at the junction of the lips |
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Term
| WHat is demonstrated on a PA mandible? |
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Definition
| mandibular rami and lateral portion of the body |
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Term
| How do you position your patient for the Towne method when the mandible is the area of interest? |
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Definition
| OML perpendicular to the IR |
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Term
| What is the CR placement for the Towne Method when the mandible is the area of interest? |
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Definition
| CR 35 degrees caudad, center at the glabella |
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Term
| What is demonstrated on the Towne method when the mandible is the area of interest? |
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Definition
| Condyliod process of mandible and temporomandibular fossae |
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