temporal 1

Question 1

PP and CR Law Method
Double-tube angulation

Answer 1

15 degrees caudad and 15 degrees anteriorly
True Lateral

Question 2

RP Law Method
Double tube angulation

Answer 2

enters approximately 2 inches posterior, and 2 inches superior, to the EAM and exits the downside mastoid process.

Question 3

PP and SS Modified Law Method
Single-tube angulation

Answer 3

Mastoid air cells, the lateral portion of the petrous pyramid, the superimposed (IAM) and EAM.
MSP 15

Question 4

PP of Stenvers

Answer 4

forehead, nose, cheek with the side examined closest to the IR.
MSP 45 to IR

Question 5

CR Stenvers

Answer 5

12 degrees cephalad

Question 6

RP Stenvers

Answer 6

3 to 4 inches posterior and ½ inch inferior to the upside EAM and exits about 1 inch anterior to the downside EAM.

Question 7

SS Stenvers

Answer 7

Mastoid Air Cells and Petrous Pyramid closest to IR. The petrous Pyramid is parallel with the plain of the IR

Question 8

CR Arcelin

Answer 8

10 degrees caudad

Question 9

RP Arcelin

Answer 9

enters 1 inch anterior and ¾ inch superior to EAM.

Question 10

SS Arcelin

Answer 10

exact reverse of the Stenvers method, demonstrates the petrous portion of the temporal bone farthest from the IR.