finals L10

Question 1

beam alignment frequency

Answer 1

every 3 to 6 months

Question 2

beam alignment equipment

Answer 2

• Appropriate test object for the alignment of the x-ray beam and the light field. (Coins or other metal objects)
• A cylinder with an attenuator at its center, or another test object that can be used to assess the perpendicular incidence of the beam on the image receptor.

Question 3

Make an exposure using __ kVp and __ mAs, or the values recommended by the medical physicist. beam alignment

Answer 3

50kVp, 3mAs

Question 4

X-ray light field alignment:
Ensure that the deviation of the xray field from the light field does not exceed __ cm on any side for an SID of 100 cm or __% of any other SID.

Answer 4

±2cm, ±2%

Question 5

Centering:
Ensure that the coincidence of the collimator light beam crosshairs with the x-ray beam center does not exceed __cm at an SID of 100 cm

Answer 5

±1

Question 6

If a trend is observed when repeating this test, then the ___ should adjust the beam limiting device.

Answer 6

service engineer