Which of the following is not a form of beam restriction? ...

[washai]

Which of the following is not a form of beam restriction?
 
 collimators
  wedge filter
  cones
  aperture diaphragms

Question 2

Which of the following factors would not indicate the need for a grid?
 
 higher kVp
  a thicker part
  increased SID
  increased OID

[jesse.fleming]

Answer to Question 1

wedge filter

Rationale: A wedge filter will not serve as a means of beam restriction, but rather a means to create a more uniform density on parts of uneven part thickness, e.g., foot, t-spine.

Answer to Question 2

increased SID

Rationale: A grid is suggested with parts measuring over 10 cm and with higher kVp. Increased kVp values influence the amount of scatter radiation produced. In cases where increased OID is a factor with a thicker part, the theory of the air-gap technique could apply, avoiding the need for a grid.

[washai]

Excellent

[brbarasa]

TYSM