The area of the focal spot that is projected out of the tube toward the object being radiographed is the

Question

Quizplus · Accepted Answer

The effective focal spot refers to the area of the focal spot that is projected out of the tube toward the object being radiographed, and is responsible for creating the spatial resolution of the image. The line focus refers to the angle at which the x-ray beam is focused, and is determined by the size and shape of the actual focal spot. The actual focal spot refers to the physical area on the anode that is bombarded by the electrons and where x-rays are produced. The x-ray tube long axis is the imaginary line running through the center of the x-ray tube in the direction of the primary beam. Therefore, the best choice is A, effective focal spot.

The Area of the Focal Spot That Is Projected Out