What component restricts the size of the x-ray beam?

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Multiple Choice

What component restricts the size of the x-ray beam?

Restricting the X-ray beam size is about shaping the field to limit exposure and improve image quality. The lead collimator sits in the path of the beam and uses a lead shield with an adjustable aperture to create a defined field—usually rectangular or circular—that matches the image receptor. Any X-rays outside that aperture are absorbed by the lead, so only the desired area reaches the patient and the sensor. The other components don’t control field size: the control panel sets exposure factors (kVp, mA, time), insulating oil cools and insulates the tube, and the X-ray tube itself generates the beam. So the lead collimator is the part that restricts the beam.

Restricting the X-ray beam size is about shaping the field to limit exposure and improve image quality. The lead collimator sits in the path of the beam and uses a lead shield with an adjustable aperture to create a defined field—usually rectangular or circular—that matches the image receptor. Any X-rays outside that aperture are absorbed by the lead, so only the desired area reaches the patient and the sensor. The other components don’t control field size: the control panel sets exposure factors (kVp, mA, time), insulating oil cools and insulates the tube, and the X-ray tube itself generates the beam. So the lead collimator is the part that restricts the beam.

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