Imaging evaluation of blood supply changes after chemotherapy of osteosarcoma and its correlation with tumor necrosis rate.

While there were no significant differences in age, gender and tumour site between the two groups, the P value of the age comparison was very close to being statistically significant ( Table 1 ). 3.3 Comparison of the CT enhancement rate as a function of the tumour necrosis rate Comparison of the initial CT enhancement rate pre-chemotherapy: the average enhancement rate was 1.75 (median 1.68, range 1.18–2.51) in the group with a necrosis rate greater than 90% and 1.62 (median 1.52, range 1.00–2.41) in the group with a necrosis rate<90%.

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