Cranium: Nasal, Sinus Etc. Flashcards
Where is the CR entering on a lateral of the facial bones?
Lateral surface of zygomatic bones, halfway between the outer canthus and EAM
For a lateral of the facial bones the exposure field should be no larger than
6x10in
For a waters projection of the facial bones, the OML’s should form a ____ degree angle with the plane of the IR.
37
For a water of the facial bones the CR is
Perpendicular, exiting the acanthion
The exposure field for the waters of the facial bones should be no larger than
8x10in
What structures are shown in the Waters of the facial bones
Orbits, maxillae, and zygomatic arches
For waters of the facial bones the IR is centered
At the level of the acanthion
For PA Caldwell of the facial bones, the CR exits the _____ at an angle of _____
Nasion
15 degrees caudad
For the lateral of the Nasal bone, the field of view should be no larger than
3x3 in
What structures are shown on a lateral view of the Nasal bone?
Nasal bone and soft tissue of the nose closer to the IR
For a lateral view of the sinuses the CR enters
1/2 to 1 inch posterior to the outer canthus
For a PA axial Caldwell view of the sinuses the grid device should be
Tilted down 15 degrees
Angling the grid for the PA axial Caldwell is preferred because
It brings the IR closer to the sinuses
For the waters method of the sinuses the OML should form a _____ degree angle from the IR
37
Where does the CR exit on a waters method of the sinuses?
Acanthion
The open mouth waters of the sinuses demonstrates
The sphenoidal sinuses
For sinuses it’s important for the patient to be ____ whenever possible
Upright
The ______ form the superior bony wall of the nasal cavity
Nasal bones
For the lateral of the nasal bones the CR is
Perpendicular to bridge of the nose, at a point 1in distal to the nasion
The _____ form the superior bony wall of the nasal cavity
Nasal bones
What are the smallest bones in the skull?
Lacrimal bones
Each lacrimal bone contains a ______ through which a _____ passes
Lacrimal foramen
Tear duct
The largest of immovable bones of the face
Maxillary bone
Which facial bone articulates with all other facial bones except the mandible?
Maxillary bone
The _____ bones form the prominence of the cheeks and a part of the side wall and floor of orbital cavities.
Zygomatic
L-shaped bones
Palatine bones
Largest and most dense bone if the face
Mandible
U-shaped structure situated at the base of the tongue
Hyoid bone
Each orbit is composed of ___ different bones
7
Paranasal sinuses are not completely developed until the age of
17 or 18
The largest sinus is the
Maxillary sinus
Zygomatic bone and temporal bone form the
Zygomatic arch
How many facial bones are there?
14
For a lateral projection of the orbits, the ____ eye is touching the IR
Affected
Where does the IR enter for a lateral view of the orbits?
Perpendicular to outer canthus
For a PA axial projection of the orbits, the IR is centered
3/4in distal to the nasion
What is your tube angulation for a PA axial projection of the orbits?
30 caudal
What is on the IR for the modified waters method of the orbits?
Patients chin
The OML should form an angle of ____ with the plane of the IR on the modified waters of the orbits.
50
For an oblique of the mandible the patients head should be turned ____ degrees toward the IR
30
What is the tube angle for an oblique of the mandible?
25 degrees cephelad
What is the tube angle for the AP axial of the mandible?
35 caudad
For the axiolateral projection of the TMJ’s the patient is in the lateral position with the ____ side touching the IR.
Affected
For the axiolateral view of the TMJ’s the tube angle is
25-30 degrees caudad
For the axiolateral obliques of the TMJ’s the CR angle is
15 degrees caudad
How many sinus groups should be clearly demonstrated with the lateral projection?
4
