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TMJ SINUS MANDIBLE

Positioning TMG SINUS MANDIBLE

QuestionAnswer
Which of the following is centered to the IR for the PA projection of the mandibular rami? Tip of the nose
Which of the following projections will clearly demonstrate any medial or lateral displacement of fractures of the mandibular rami? PA and PA Axial
What is the central-ray angulation for the PA axial of the mandibular rami? 20 to 25 degrees Cephalad
Several methods are available to perform the axiolateral oblique projection of the mandible to demonstrate the symphysis, body, or ramus. What is the central-ray angulation for all of these projections? 25 degrees Cephalad
Which of the following lines is placed perpendicular to the plane of the IR for the AP axial projection of the TMJ articulation? Orbitomeatal line
What is the central-ray angulation for the AP Axial projection of the TMJ? 35 degrees caudad
The Midsagittal plane of the head is rotated how many degrees for the axiolateral oblique projection of the TMJ? 15 degrees toward the IR
Which of the following lines is placed parallel with the transverse axis of the IR for the axiolateral oblique projection of the TMJ? Acanthiomeatal line
What is the central ray angulation for the axiolateral oblique projection of the TMJ? 15 degrees
Which reference line is perpendicular to the IR for the PA and PA axial mandibular rami? OML
The axiolateral oblique projection is used to demonstrate the mandible. How is the head positioned to demonstrate the ramus of the mandible? True lateral
The axiolateral oblique projection is used to demonstrate the mandible. How is the head positioned to demonstrate the body of the mandible? 30 degrees toward the IR
The axiolateral oblique projection is used to demonstrate the mandible. How is the head positioned to demonstrate the symphysis of the mandible? 45 degrees toward the IR
Which of the following projections demonstrates the condyle and neck of the mandible? Axiolateral oblique
At what age are all of the sinuses completely developed? 18
The largest sinus is the ___________. Maxillary
Which sinus is located immediately below the sella turcica? Sphenoidal
Patients who are having an examination of the paranasal sinuses should always be examined in the upright position to ________. Demonstrate the presence or absence of fluid and differentiate between fluid and other pathological conditions (1 and 2)
The most effective way to protect the patient from unnecessary radiation during sinus radiography is to use___________. Proper collimation
For a lateral projection of the paranasal sinuses the central ray is directed ___________. 1 inch posterior to the outer canthus
Which of the following should be clearly demonstrated on a lateral projection of the paranasal sinus? All four sinus groups, superimposed orbital roofs, and superimposed mandibular rami
Which projection will best demonstrate the frontal and anterior ethmoidal sinuses? PA Axial (Caldwell)
When using the angled grid technique for the PA Axial (Caldwell method) projection of the sinuses, the vertical grid device must be angled_______. 15 degrees
Which of the following must be projected below the maxillary sinuses for the parietoacanthial projection (Waters method) of the sinuses? Petrous pyramids
The parietoacanthial projection (Waters method) of the sinuses requires the Orbitomeatal line to be placed how many degrees from the plane of the IR? 37 degrees
Which sinus is projected through the mouth on the open-mouth modification of the Waters method? Sphenoidal
Which of the following projections will best demonstrate the maxillary sinuses? Parietoacanthial (waters)
For the open-mouth modification of the Waters method, the central ray should exit the ___________. Acanthion
To successfully demonstrate the ethmoidal and Sphenoidal sinuses on the SMV projection, which of the following must occur? The infraorbitomeatal line must be parallel with the IR and the central ray must be perpendicular to the infraorbitomeatal line and horizontal
At which level should the central ray enter the base of the skull for the SMV projection of the sinuses? 3/4 inch anterior to the level of the EAM
Which projections will demonstrate the ethmoidal sinuses? Lateral, PA axial (Caldwell), and SMV
The respiration phase for all projections of the facial bones and sinuses is ___________. Suspended
Which of the following are included as functions of the sinuses? Decrease the weight of the skull, warm and moisten inhaled air, provide a resonating chamber for voice
Which of the sinuses is developed at birth and visible radiographically? Maxillary
The two ethmoidal sinuses are located within which bone? Ethmoid
Which reference line is positioned horizontal to ensure proper extension of the head during a lateral projection of the sinuses? IOML
Which reference line is positioned perpendicular to the angled IR for the PA axial (Caldwell method) projection of the sinuses? OML
The central ray forms an angle of how many degrees with the OML for the pa axial (Caldwell) projection of the sinuses? 15 degrees
Which of the following reference lines is placed perpendicular to the IR for a parietoacanthial (Waters method) projection? MML
Where is the IR centered for the parietoacanthial (Waters method) projection of the sinuses? Acanthion
Where are the petrous ridges seen on a parietoacanthial (Waters method) radiograph? Inferior to the floor of the maxillary sinuses
Which of the following foramina will be demonstrated in the orbit on a parietoacanthial (Waters method) radiograph? Rotundum
The OML forms an angle of how many degrees from the plane of the IR for an open-mouth parietoacanthial (Waters method) projection? 37 degrees
The central ray is directed perpendicular to which reference line for the SMV projection of the sinuses? OIML
Created by: o3iiheartmmg04
 

 



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