What is the standard technique used for an L spine DXA scan?

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Multiple Choice

What is the standard technique used for an L spine DXA scan?

Explanation:
The standard technique for an L spine DXA (dual-energy X-ray absorptiometry) scan typically involves using a voltage setting within the range of 70-140 kVp. This range is appropriate for providing the necessary energy to penetrate the spine effectively while also ensuring sufficient image quality for accurate measurement of bone mineral density. The energies used in this range are specifically selected to optimize the contrast between bone and surrounding soft tissue, allowing for an accurate assessment of bone health. The kVp settings must also consider factors like patient size and the type of DXA machine being used. Using a voltage outside of this range, such as those noted in other options, could either underexpose the images, leading to difficulties in interpreting bone density, or result in overexposure, which would not only degrade the image quality but could also increase patient radiation exposure without added diagnostic benefit. Thus, the 70-140 kVp range is deemed standard for L spine assessments in DXA imaging.

The standard technique for an L spine DXA (dual-energy X-ray absorptiometry) scan typically involves using a voltage setting within the range of 70-140 kVp. This range is appropriate for providing the necessary energy to penetrate the spine effectively while also ensuring sufficient image quality for accurate measurement of bone mineral density.

The energies used in this range are specifically selected to optimize the contrast between bone and surrounding soft tissue, allowing for an accurate assessment of bone health. The kVp settings must also consider factors like patient size and the type of DXA machine being used.

Using a voltage outside of this range, such as those noted in other options, could either underexpose the images, leading to difficulties in interpreting bone density, or result in overexposure, which would not only degrade the image quality but could also increase patient radiation exposure without added diagnostic benefit. Thus, the 70-140 kVp range is deemed standard for L spine assessments in DXA imaging.

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