Theoretically, the ideal focal spot would be a point source.

Name: Theoretically, the ideal focal spot would be a point source.
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Question

Quizplus · Accepted Answer

A point source would produce a perfect, infinitely small focal spot. However, in reality, this is not possible due to limitations in the design and manufacturing of the X-ray tube and imaging system. The focal spot size is typically described as the area of the electron beam on the anode target, and it affects the spatial resolution and image quality of the X-ray image.

Theoretically, the Ideal Focal Spot Would Be a Point Source