This chapter will consider some of the information, outlined in the previous chapter, in relation to clinical practice in general. The concept of radioresponsiveness has been mentioned already, in relation to both tumours and normal tissues. The aim of the doctor using ionising radiation in the treatment of tumours is to kill the tumour and not damage the normal tissues. While this is desirable in theory, it is difficult to achieve in practice. In this context, the concept of the therapeutic index has been much used.
KeywordsNormal Tissue Ionise Radiation Late Complication Therapeutic Index Late Reaction
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