____ 52.Which positioning line is parallel to the IR for the oblique inferosuperior (tangential) projection ofthe zygomatic arches?a.Midsagittal planeb.Infraorbitomeatalc.Orbitomeatald.Glabelloalveolar Show
____ 53.Which projection best demonstrates the floor of the orbits?  ____ 54.What is the maximum CR angulation used for the axiolateral oblique projection of the mandible?
____ 55.How much skull rotation (from a lateral position) is required to place the ramus parallel to the IR forthe axiolateral oblique projection of the mandible? ____ 56.Why is the chin extended for an axiolateral oblique projection of the mandible?a.To open up the TMJb.To profile the condylar processc.To prevent superimposition upon the cervical spined.To better visualize the mentum ____ 57.Which positioning line is perpendicular to the IR for a PA projection of the mandible? ____ 58.Where is the CR centered for an AP axial projection of the mandible? ____ 59.Along with the use of erect positions, what other technical factor is important to demonstrateair/fluid levels in paranasal sinuses? ____ 60.Where is the CR centered for a lateral projection of the sinuses?a.Upside EAM (side away from image receptor)b.At the level of the nasionc.Midway between the acanthion and the EAMd.Midway between the outer canthus and the EAM ____ 61.Which sinuses are best demonstrated with a parietoacanthial projection? ____ 62.A radiograph of a lateral projection of the facial bones reveals that the mandibular rami are notsuperimposed. What specific positioning error is present on this radiograph? ____ 63.A radiograph of a parietoacanthial (Waters) projection reveals that the petrous ridges aresuperimposed over the lower third of the maxillary sinuses. What specific positioning error (if any)led to this radiographic finding? The skull consists of 22 bones: 14 facial bones Caldwell's Method etc.
Registered Radiologic Technologist, Medical Student The skull consists of 22 bones: 14 facial bones Caldwell's Method etc. When using the Axiolateral oblique projection to demonstrate the mandible How is the head positioned to demonstrate the symphysis of the mandible?Positioning TMG SINUS MANDIBLE. What CR angle is required for the axiolateral Schuller method projection of the Tmjs?The Schuller Method requires the skull to be in a true lateral position. The CR should be 25-30 degrees caudad. 1/2" anterior & 2" superior to the upside of the EAM. Which projection of the TMJ is the Axiolateral oblique projection?
Which aspect of the mandible is best demonstrated with an AP axial projection?skull/facial bones/sinuses/mandible/. Which positioning line is parallel to the IR for the oblique inferosuperior tangential projection of the zygomatic arches?Chapter12 Bontegar. |
Why is the chin extended for an axiolateral oblique projection of the mandible?
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