1601 / 1631
Most prevalent methods of delivering TBI
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Patient standing or lying down at extended SSD
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Reduced dose rate (about 10% of normal)
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One field using the diagonal dimension
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Plexiglas barrier close to patient to defeat the skin-sparing
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Blocking of critical organs (usually lungs, sometimes kidneys,
liver, and previously irradiated sites)
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Point measurements for planning and dose verification
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Large dose heterogeneity