kats
For the lateral skull projection, how should the patient be positioned?
Semiprone with head turned in TLP
What is the proper patient positioning for the PA Axial Caldwell projection?
Prone with head resting on forehead and nose
What is the proper patient positioning for the AP Skull projection?
For the AP Axial Towne projection, if IOML is perpendicular with the IR, how much and in what direction should the CR be angled?
37 degrees caudad
What is the CR centering and intersection point for the PA Axial HAAS projection?
25-30 degrees cephalad entering 1.5" below the inion and exiting 1.5" above nasion
What is the centering and intersection point for the lateral skull projection?
CR-> perpendicular 2" above EAM
What is the CR centering and intersection point on the PA Axial Caldwell projection?
Axial- 15 degrees caudad to exit nasion
PA- entering with no angle on tube
What is the CR centering and intersection point for the AP Skull projection?
Axial-> 15 degrees cephalad to nasion
AP-> perpendicular to nasion
What is the CR centering and intersection point for the AP Axial Towne projection?
caudad entering 2.5" above glabella passing through the level of EAM
What is the proper patient positioning for the Submentovertical (SMV Schuller) method of the Skull?
Patient supine with neck hyperextended, placing IOML as parallel to IR as possible, head on vertex
When performing the lateral skull projection, how can you tell the head was in TLP when looking at the final image?
-Superimposed EAM
-Superimposed ramus of mandible
-Superimposition of TMJ, mastoid processes, orbital roofs, anterior and posterior clinoid processes
How can you tell there was no rotation of the skull on the PA Axial Caldwell projection?
Measure from lateral border of skull and lateral border of orbit, should be equal distance
What projection of the skull best demonstrates the occipital bone?
AP Axial Towne
On the finished image of an AP Axial Towne projection, how can you tell there was no rotation of the patients skull?
Measure from the lateral border of the skull to the foramen magnum and it should be equal on each side
What is the CR direction and intersection point for the SMV Schuller method of the skull?
Perp. to IOML, enters MSP of throat between the angles of the jaw and passes through a point 3/4" anterior to EAM
What does the lateral skull projection demonstrates?
Detail of the side of the skull closest to the IR
Where should the petrous ridges lie in the PA Axial Caldwell projection of the skull?
What is the proper patient positioning for the AP Axial Towne projection of the skull?
Patient supine with MSP perpendicular and centered to IR with neck flexed until OML or IOML are perp. to IR
What should be visible within the foramen magnum in the AP Axial Towne projection?
Dorsum sallae and the posterior clinoid process
How can you tell there was no rotation on the skull for the SMV Schuller method?
Which projection of the skull best demonstrates the frontal bone?
What projection can be used in place of the Skull PA Axial Caldwell projection when the patient cannot be placed prone?
AP Skull
For the AP Axial Towne projection, if OML is perpendicular with the IR, how much and in what direction should the CR be angled?
30 degrees caudad
For the PA Axial HAAS projection, what is the proper patient positioning?
Patient prone with MSP perp. and centered to IR, head rests on forehead and nose
Which projection of the skull best demonstrates the base of the skull?
Submentovertical (SMV Schuller Method)