SOFTWARE PROJECT MANAGEMENT
QUALITY MANAGEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is TRUE about Focal spot test?
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using pinhole camera
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using star test pattern
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using focal spot test tool
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None of the above
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Explanation:
Detailed explanation-1: -Actual focal spot-the area of the target upon which the electrons impinge; this is the area over which heat is produced. Effective focal spot-this should ideally be a point source; the x-ray beam appears to originate from a much smaller area as a result of the angulation of the target.
Detailed explanation-2: -The focal spot is the area on the target of the x-ray tube which the electron stream strikes and from which x-rays are emitted. The larger the area of the focal spot, the poorer is the detail in the x-ray image due to the larger the area of penumbra or edge unsharpness associated with the image.
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