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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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contentuptodate· Content· item f36_38_37485

©2013 UpToDate ® Print Email Nonuniform photon attenuation and tissue electron density Cartoon depicting the thorax containing tissues of varying electron densities. The emitted photons must therefore traverse some regions with a potential to decrease the activity detected by the gamma camera.