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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.