A rotating collimator head
1)can be rotated without rotating the entire tube column on DR systems.
2)does not affect the alignment of the beam with the grid.
3)allows the technologist to increase collimation on projections when the longitudinal axis of the anatomical structure is not aligned with the longitudinal or transverse axis of the IR.
4)should be avoided when using computed radiography because it may affect the exposure field recognition process.
A) 1 and 2 only
B) 1, 2, and 3 only
C) 1, 2, and 4 only
D) 1, 2, 3, and 4

Question

Quizplus · Accepted Answer

A rotating collimator head can indeed be rotated independently of the tube column on DR systems, allowing for more precise alignment without affecting the beam-grid alignment. It also enables increased collimation for anatomical structures not aligned with the IR axes, enhancing image quality. However, with computed radiography (CR), the use of a rotating collimator should be cautious as it might interfere with the exposure field recognition, potentially affecting image processing and quality.

A Rotating Collimator Head