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. 2013 Nov 21;6:1719–1728. doi: 10.2147/OTT.S53639

Figure 2.

Figure 2

The volume reduction of target volumes. The volume reduction of GTV_T, CTV_T, CTV_Lr (A), GTV_Ns, CTV_Ns (B), and GTV_Nl, CTV_Nl (C) in different week.

Notes: Volume reduction was calculated as follows: (VCTn−VCT0)/VCT0 × 100% (n=1, 2, 3, 4, 5, 6), using the initial volume on planning CT as the reference. VCTn and VCT0 were the volumes on repeated CT and planning CT, respectively. The lines show the means, and the error bars show the 95% confidence intervals.

Abbreviations: GTV_T, gross tumor volume of the primary tumor; CTV_Lr, clinical target volume of the elective region; CTV_T, clinical target volume of the primary tumor; GTV_Ns, gross tumor volume of small lymph nodes; CTV_Ns, clinical target volume of small lymph nodes; GTV_Nl, gross tumor volume of large lymph nodes (minimum diameter >3.0 cm); CTV_Nl, clinical target volume of large lymph nodes.