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Table 4 The prescription dose, conformity index (CI), heterogeneity index (HI) and the number of monitor units (MU) in the anatomical and functional IMRT plans for the 11 patients

From: IMRT treatment plans and functional planning with functional lung imaging from 4D-CT for thoracic cancer patients

Patient Diagnosis Prescription dose (cGy) PTV (cm3) Anatomic planning Functional planning
     PTV PTV
     90%CI HI MU Mean (%) 90%CI HI MU Mean (%)
1 NSCLC 6000 62.1 0.34 0.08 741 102.6 0.31 0.11 999 102.6
2 NSCLC 7400 119.5 0.68 0.07 387 101.9 0.62 0.10 724 101.9
3 Thymoma 5400 216.7 0.56 0.10 513 102.3 0.53 0.15 605 102.3
4 SCLC 5400 253.5 0.56 0.14 551 102.2 0.47 0.13 1182 102.2
5 Thymoma 5040 260.7 0.57 0.12 517 102.4 0.52 0.15 705 102.4
6 Esophagus 5040 393.2 0.64 0.11 734 102.4 0.75 0.13 790 102.4
7 NSCLC 5000 639.8 0.66 0.14 1060 100.9 0.64 0.11 1163 100.9
8 Esophagus 5040 660.6 0.61 0.12 960 102.5 0.40 0.12 973 102.5
9 NSCLC 5000 716.6 0.67 0.09 867 101.9 0.60 0.13 1291 101.9
10 Esophagus + NSCLC 5040 732.8 0.67 0.09 962 102.0 0.66 0.12 1074 102.0
11 NSCLC 6000 804.9 0.61 0.10 1367 101.1 0.47 0.12 1302 101.1
  1. CI = PT V PI PT V PI V PI PTV
  2. CI : Conformity index.
  3. PI : prescription isodose line.
  4. PTV PI : planning target volume within the prescribed isodose volume PI;
  5. V PI : volume of the prescription isodose line;
  6. PTV : planning targe volume.
  7. HI = D 2 % D 98 % D P
  8. HI: Homogenity index.
  9. D2%: represent the doses to 2% of the PTV.
  10. D98%: represent the doses to 98% of the PTV.
  11. DP: Prescription Dose.