Orbits

Question 1

Which bones make up an orbit?

Answer 1

frontal, ethmoid, sphenoid, lacrimal, palatine, maxillary, zygoma

Question 2

The orbit sits at a ____ degree angle to the MSP.

Answer 2

37 degrees

Question 3

The orbit sits at a ____ degree angle to the OML.

Answer 3

30 degrees

Question 4

Name the 4 foreign body localization methods.

Answer 4

vogt method
sweet method
pfeiffer method
parallax method

Question 5

Which method uses a leaded contact to localize the foreign body?

Answer 5

pfeiffer comberg

Question 6

Which method localizes the foreign bone by observing the direction of its motion on a fluoroscopic screen?

Answer 6

Parallax motion

Question 7

Which method uses geometry to determine the exact location?

Answer 7

Sweet method

Question 8

Which method is used to visualize low density or small particles in the anterior eye ball?

Answer 8

vogt method

Question 9

What are the image quality considerations that must be taken into account when performing orbital images?

Answer 9

Close OID + proper SID
Decrease scatter
small focal spot
no motion
no artifacts