Which components make up an x-ray tube in DXA?

Which components make up an x-ray tube in DXA?

• A. Anode and cathode in a vacuum tube
• B. Phototubes and scintillation detectors
• C. Beta sources and gamma emitters
• D. Laser and fiber optics

Answer: (A)

An x-ray tube used in Dual-Energy X-ray Absorptiometry (DXA) is fundamentally composed of an anode and a cathode within a vacuum environment. The cathode emits electrons when heated, and these electrons are accelerated toward the anode. Upon impacting the anode, the high-energy interactions generate x-rays. This configuration is critical in DXA, as the x-ray emissions are utilized to measure bone mineral density by passing through the body and creating differential absorption based on bone and soft tissue. The specific design of having an anode and cathode in a vacuum allows for the efficient generation of x-rays, facilitating accurate and reliable measurements of bone density. The other components mentioned in the other choices, like phototubes, scintillation detectors, beta sources, and gamma emitters, do not form part of the x-ray tube mechanism for DXA. Similarly, while lasers and fiber optics are relevant in some imaging technologies, they do not relate to the conventional production of x-rays necessary for DXA assessments.

An x-ray tube used in Dual-Energy X-ray Absorptiometry (DXA) is fundamentally composed of an anode and a cathode within a vacuum environment. The cathode emits electrons when heated, and these electrons are accelerated toward the anode. Upon impacting the anode, the high-energy interactions generate x-rays.

This configuration is critical in DXA, as the x-ray emissions are utilized to measure bone mineral density by passing through the body and creating differential absorption based on bone and soft tissue. The specific design of having an anode and cathode in a vacuum allows for the efficient generation of x-rays, facilitating accurate and reliable measurements of bone density.

The other components mentioned in the other choices, like phototubes, scintillation detectors, beta sources, and gamma emitters, do not form part of the x-ray tube mechanism for DXA. Similarly, while lasers and fiber optics are relevant in some imaging technologies, they do not relate to the conventional production of x-rays necessary for DXA assessments.