The invention discloses a
model method for calculating an equivalent uniform dosage of radiotherapy, wherein an LQ model is not fundamentally changed and a
cell survival condition in a single
large dose can be well reflected. Effectiveness of original clinical experience is ensured, and the method can be used for effect evaluation of
large dose irradiation after slight correction of the
original data. Based on the equivalent uniform
dose of a segmented secondary
function model, by means of a formula, a treatment planning
system can quickly acquire the equivalent uniform doses of a tumor and anormal organization, thereby facilitating
comparative evaluation of treatment plans with different
dose segmentation
modes and different
dose distribution patterns. The segmented secondary
function model is used for
settling a problem of
high cell survival rate prediction deviation after performing large-dose
irradiation by a traditional linear secondary model. The equivalent uniform dosage modelbased on the model realizes comparison of the treatment effects in different dose distributions. After introducing latent
doubling time, the advantages of single large-dose
irradiation at an aspect ofovercoming
cell proliferation is presented, and a difficulty in clinical application of a
radiation biological model is basically solved.