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How X-rays Pass Through Soft Tissues to Create Images
为什么X光能穿透软组织成像
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X-rays are high-energy electromagnetic waves that can pass through many materials.
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Soft tissues like muscle and fat absorb only a small portion of these rays.
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Denser materials such as bones and teeth absorb much more X-ray energy.
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A detector behind the body captures how many X-rays make it through each area.
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Areas where more rays pass through appear darker on the final image, like soft tissue.
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Regions where fewer rays get through—like bone—show up as bright white patches.
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This contrast lets doctors spot fractures, tumors, or other hidden structures clearly.
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Modern digital X-ray machines adjust exposure to minimize radiation dose safely.
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Lead aprons protect unaffected body parts because lead absorbs X-rays completely.
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The whole process relies on differences in material density—not color or light.