Research Article

Comparison of 3D Conformal Proton Therapy, Intensity-Modulated Proton Therapy, and Intensity-Modulated Photon Therapy for Retroperitoneal Sarcoma

Table 3

PTV conformity index.

RangeMean value (Wilcoxon rank sum test)

IMXT1.19–1.501.35
3D CPT1.37–2.341.78
IMPT1.05–1.301.15

PTV conformity index (CI) = target tissue receiving 95% of the dose/planning target volume (V95%/PTV).