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Quality control follow-up.

In oncology and particularly in radiation therapy, the follow-up indicates the continuing and systematic clinical control of the patient after treatment. This control is aimed at the assessment of the evolution in time of three major aspects: the disease response to treatment (local control, survival), the onset of treatment-induced side-effects; the quality of life as the result of both. The quality of follow-up procedure aimed at the clinical investigations is one of the fundamental elements based on which the efficacy of the used diagnostic and therapeutic procedure is proven.