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breakpoint

1) A radiation dose threshold established for a treatment site in cGy or Gy. For example, so that a spinal block may be added or the treatment field size reduced before additional dose is delivered. Before enabling treatment of the next field, the system

A point in a course of treatment when the dose to a reference point reaches a preset amount. Usually, at a breakpoint, the RT must take some special action, such as a blood test.

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