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Prescribing

Prescribing to median dose without some restriction on the

slope of the target DVH could allow a shallow slope and low

target minimum dose

Need some agreement on minimum acceptable

At least 99% of the volume (D

99 %

) to receive>95% of dose

At least 98% of the volume (D

98 %)

to receive>95% of dose

Limit on maximum also needed, for example

Less than 1% of the volume >105% of dose