Multiple Choice
Which of the following statements is true?
A) If the height of the lead strips increases and the space between the grid strips decreases, the grid will be more effective at scatter removal.
B) If the height of the lead strip decreases and the space between the grid strips increases, the grid will be more effective at removing scatter radiation.
C) A high ratio grid removes little scatter.
D) A grid decreases scatter production.
Correct Answer:
Verified
Correct Answer:
Verified
Q22: Grid ratios range from:<br>A) 2:1 to 6:1.<br>B)
Q23: The smaller the volume of tissue irradiated,the:<br>A)
Q24: Which beam restriction device can be cut
Q25: Why does the air-gap technique work?<br>A) The
Q26: As beam restriction increases,field size and patient
Q28: The only reason a grid should be
Q29: What purpose does positive beam limitation serve?<br>A)
Q30: The most common cause of grid cutoff
Q31: In general,when should a grid be used?<br>A)
Q32: Grids do not reduce scatter production.