Where should the cathode end of an x-ray be placed for an AP thoracic spine to take advantage of the "heel effect" of the tube?
A) Toward the head
B) Toward the feet
C) Head or foot end
D) Variable,depending on body habitus

Question

Quizplus · Accepted Answer

The cathode end should be placed toward the feet to take advantage of the "heel effect," which results in a more intense x-ray beam at the cathode side, beneficial for the denser lower thoracic region.

Where Should the Cathode End of an X-Ray Be Placed