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Facial and Sinus

Rotation review

QuestionAnswer
Which of the following bones is not a facial bone? (middle nasal conche, vomer, lacrimal bone, mandible) Middle nasal conchae
What is the largest immovable bone of the face? Maxillae
List the four processes of the maxilla Frontal, alveolar, zygomatic, palatine
Of the four processes of the maxilla which one is most superior Frontal
Which soft tissue landmark is found at the base of the anterior nasal spine Acanthion
Which facial bones form the posterior aspect of the hard palate Horizontal portion of palatine
Which two cranial bones articulate with the maxilla Frontal and ethmoid
Which facial bones are sometimes called the "cheek bones" Zygomatic
Process that supports the upper teeth is the Alveolar process
Which facial bone forms majority of the hard palate Maxille
Each zygoma articulates with ___ crainal bones (____,_____) and with ___ facial bone (_____) 2 (frontal and temporal), 1 (maxilla)
What two bones form the bony nasal septum ethmoid and vomer
The lower teeth are rooted in the madible in what process that extends along the entire superior portion of the body of the mandible alveolar process
Only sinus that are part of the facial bone structure Maxillary sinus
What sinuses develop last Ethmoid sinuses
Older term for maxillary sinus is ____, an abbreviation for ________ antrum, antrum of highmore
The ______ sinuses are contained within the lateral masses or labyrinths of the ethmoid bone ethmoid
The large maxillary sinus drains through the _____ passageway down through the middle nasal meatus and inferior nasal meatus Infundibulum
The posterior poriton of the cone, the apex, corresponds to the ______, through which the optic nerve passes optic foramen
Seven bones make up each orbit, ____ cranial boens and ____ facial bones. 3, 4
What three cranial bones make up the orbit Frontal, ethmoid, and sphenoid
Where are the ethmoid sinuses located within the ethmoid bone Lateral masses
Which bone is involved with a tripod fracture Zygomatic
Which of the following modalities should be used to evaluate a possible neoplasm involving the zygomatic and maxilla bones on a PT. working in an industrial metal fabrication plant CT
Where is the CR centered for a lateral projection of the facial bones Zygoma, midway between the EAM and the outer canthus
What is the angle between the OML and the plane of the IR for a parietonacanthial (Waters) projection 37 degrees
Which positioning line is place perpendicular to the plane of the IR for the parietoacanthial (Waters) projection Mentomeatal
Where does the CR exit for a modified parietoacanthial (mod waters) projeciton of the facial bones Acanthion
Which of the following projections will best demo the bony nasal septum Parietoacanthial
(T/F) The lateral projection for the nasal bones is generally a unilateral projection. (Both RT and LT lateral projections are usually not required) False
What can the tech do if the Pt. cannot extend the head and neck adequately for the routine submentovertex projection of the zygomatic arches Angle the CR to place it perpendicular to the IOML
Which of the following technical factors do not apply to lateral nasal bone projections The Tech should not use AEC, The Tech should use a small focal spot, The Tech should use low to med. kV.
Which positioning line is placed perpendicular to the plane of the IR with a true lateral nasal bone projection Interpupillary
The CR must be placed parallel to the ___ positioning line for the superoinferior (tangential) projection of nasal bones glabelloalveolar
Which of the following points is not true about the oblique inferosuperior (tangential) projection of the zygomatic arches A grid must be used
Which projection best demonstrates the floor of the orbits Modified parietoacanthial (modified waters)
Which positioning line must be used with a 30 degree caudad angle for an AP axial projection of zygomatic arches OML
What is the angle between the midsagittal plane and the IR for a parieto-orbital oblique projection of the optic foramen 53 degrees
Which positioning line is placed perpendicular to the IR for the parieto-orbital oblique projection of the optic foramina AML
What is the maximum CR angulation used for the axiolateral oblique projection of the mandible 25 degrees
Why is the chin extended for an axiolateral oblique projection of the mandible To prevent superimposition upon the cervical spine
The modified law method for TMJ requires a ____ degree rotation of the skull and a ___ angle of the CR 15:15
What is the position of the skull for an axiolateral projection (Schuller method) of the TMJs True lateral position
What CR angle is required for the Schuller method projection of the TMJs 25 to 30 degree caudad
Sit: A radiograph of a lateral projection of the facial bones reveals that the mandibular rami are not superimposed. What positioning error is present Rotation
Sit: A radiograph of a parietoacanthial (waters) projection reveals that the petrous ridges are superimposed over the lower 30% of the maxillary sinuses. What specific positioning error (if any) led to this Insufficient extension
Sit: A radiograph of a parieto-orbital oblique projection for the optic foramen reveals that the optic foramen is projected into the inferior, outer orbital rim. Which modifiction is needed to make it diagnostic? Decrease the extension of the head and neck
Sit: A radiograph of an axiolateral oblique projection of the mandible with the head in a lateral position reveals that the mandibular body is greatly foreshortened. Which modifications is needed to make it diagnostic Increase the rotation of skull toward the IR
Sit: A patient enters the ER with facial bone injuries. The physician is concerned about a possible blow-out fracture of the left orbit. Which three projections would bet diagnose the injury Modified parietoacanthial, 30 degree PA facial bone, and lateral facial bone projections
Sit: A patient enters the ER with a possible nasal bone fracture. The physician is concerned about a possible bony nasal septum deviation and fractured nasal bones. Which routine would best diagnose these injuries Parietoacanthial,Lateral nasal bone, and superoinferior (axial) projections
A patient enters the ER with a possible fracture of the right zygomatic arch. Which of the following routines would best diagnose a possible fracture of this structure Submentovertex, bilateral oblique infersuperior (tangential), and AP axial projections
Sit: A radiograph of a PA projection of the sinuses reveals that the petrous ridges are projected over the ethmoid sinuses. Which of the following mods will eliminate this superimposition while not compromising diagnostic quality Increase extension of the head and neck slightly
How is the CR aligned for the acanthiomeatal (reverse Waters) projection for the facial bones? Parallel to the mentomeatal line
Created by: Joker71