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Table 3 Correlation between the target volumes defined using preoperative prone MRI and postoperative prone CT

From: A comparative study based on deformable image registration of the target volumes for external-beam partial breast irradiation defined using preoperative prone magnetic resonance imaging and postoperative prone computed tomography imaging

Target volume r-value P-value
GTVpostCT- GTVpreMR 0.518 0.028
GTVpostCT- CTVpreMR + 10 0.483 0.042
GTVpostCT -CTVpreMR + 20 0.399 0.101
CTVpostCT + 10-CTVpreMR + 10 0.474 0.047
CTVpostCT + 10-CTV preMR + 20 0.498 0.053
PTVpostCT + 15- PTVpreMR + 15 0.401 0.099
PTV postCT + 15-PTV preMR + 25 0.377 0.123
  1. Abbreviations: GTV gross tumor volume, CTV clinical target volume, PTV planning target volume, TB tumor bed