Procedures II: Chapter 11 - Skull Quiz me questions

7 to 8 degrees

There is a ____ difference between the orbitomeatal and infraorbitomeatal lines. 

True

Metastatic osteoblastic lesions of the cranium are proliferative bony lesions of increased density. 

Lateral

Which projection of the skull will best demonstrate signs of a pituitary adenoma?

37 degrees

How much CR angle is required for the AP Axial Projection of the skull if the IOML is perpendicular to the IR?

Tilt

Which positioning error is present if the orbital plates are not superimposed on a lateral skull radiograph?

Insufficient extension

Which positioning error is present if the mandibular condyles are seen within the petrous portion of the temporal bone on an SMV projection?

25 degrees cephalad

Which type of CR angle is required for a PA Axial (Haas Method) projection of the skull?

Excessive flexion 

What is the positioning error for a parietoacanthial projection if the petrous ridges are within the maxillary sinuses?

37 degrees

What is the angle between the OML and the PLANE of the IR for a well-positioned parietoacanthial projection?

Modified parietoacanthial projection

Which of the following projections would best detect a fracture of the orbital floor?

30 degrees

How much must the skull be rotated from a lateral position to best demonstrate the body of the mandible for the axiolateral oblique projection?

42 degrees

How much is the CR angled for an AP axial projection (Modified Townes') of the mandible if the IOML is perpendicular to the IR?

25 to 30 degrees caudad

What type of CR angle is required for the axiolateral (Schuller Method) for the TMJs?

1/2 in inferior to the nasion

For the lateral projection of the nasal bones, which of the following is an appropriate CR?

LML + MSP

Which of the following positioning lines will be utilized for the Modified Parietoacanthial Projeciton (Modified Water's Method) of the orbits?