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Table 3 Mean dose, deviation of mean dose from normal liver tissue tolerance dose, and dose protraction in mismatch areas

From: In vivo assessment of catheter positioning accuracy and prolonged irradiation time on liver tolerance dose after single-fraction 192Ir high-dose-rate brachytherapy

 

6W T1-w

12W T1-w

6W T2-w

12W T2-w

n

35

27

40

27

D(MA+)/Gy

12.0 ± 4.3

14.1 ± 4.4

11.8 ± 5.4

14.0 ± 6.3

D(MA-)/Gy

23.2 ± 11.9

28.5 ± 11.0

22.2 ± 11.6

27.7 ± 15.1

ΔD(MA+)/Gy

-2.1 ± 2.8

-3.2 ± 1.9

-2.1 ± 4.3

-3.0 ± 3.1

ΔD(MA-)/Gy

9.1 ± 7.5

11.2 ± 6.8

8.3 ± 6.6

10.7 ± 8.8

I P (MA+)

1.67 ± 0.33

1.69 ± 0.26

1.67 ± 0.31

1.70 ± 0.27

I P (MA-)

1.45 ± 0.39

1.35 ± 0.37

1.45 ± 0.37

1.39 ± 0.36

AC I

0.17 ± 0.28

0.25 ± 0.27

0.16 ± 0.26

0.23 ± 0.22

V (MA +/MA-)/cm3

42.0 ± 26.7

38.2 ± 31.2

40.8 ± 29.2

43.0 ± 33.1

V (MA +/MA-)/%

21.8 ± 11.1

23.9 ± 7.8

23.1 ± 0.8

27.0 ± 9.0

  1. D(MA+), D(MA-): Average dose in mismatch areas; "MA+" for response at doses smaller than the tolerance dose and "MA-" for missing response at doses exceeding the tolerance dose.
  2. ΔD(MA+), ΔD(MA-): Difference between the average dose in "MA+"and "MA-" and corresponding tolerance dose of the irradiation effect.
  3. I P (MA+), I P (MA-): Catheter contribution index in "MA+" and "MA-".
  4. AC I : Asymmetry coefficient between the catheter contribution indices in "MA+" and "MA-".
  5. V (MA +/MA-): Volume of the mismatch areas "MA+" and "MA-" in percent and absolute value which is per definition identical for both areas.
  6. Errors are given as standard deviation.
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Radiation Oncology

ISSN: 1748-717X

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