Skip to main content

Table 2 Patterns-of-care in SBRT using RTRT

From: Clinical outcomes of stage I and IIA non-small cell lung cancer patients treated with stereotactic body radiotherapy using a real-time tumor-tracking radiotherapy system

 

n

Adenocarcinoma

SCC

Number of ports

 4

2

1

1

 5

89

64

21

 6

173

101

56

 7

17

14

2

 8

4

4

0

 9

1

1

0

X-ray energy (MV)

 4

4

4

0

 6

231

148

64

 10

51

33

16

CTV margin (mm)

 0

140

94

33

 5

3

0

3

 6

32

2

30

 7

5

2

0

 8

84

71

9

 9

5

3

2

 10

4

3

0

 11

12

10

2

 12

1

0

1

PTV margin (mm)

 3

67

47

16

 5

112

70

34

 7

17

11

4

 8

74

47

22

 10

11

6

3

 12

1

1

0

 unclassifiable

4

3

1

Margin from GTV to PTV (mm)

 0–4

67

47

16

 5–9

57

37

13

 10–14

110

66

38

 15–

48

32

12

 unclassifiable

4

3

1

Calculation algorithms

 Clarkson

39

29

10

 Superposition

247

156

70

Prescription

 PTVD95

97

59

27

 Isocenter

189

126

53

Dose (Gy/Fr)

 Prescription: PTVD95

 40/4

94

56

27

 others

3

3

0

Prescription: Isocenter

 48/4

149

99

42

 50/5

19

13

4

 others

21

14

7

BED (10) at the Isocenter (Gy)

  ≥ 100

205

134

55

  < 100

81

51

25

BED (10) at the Isocenter (Gy)

  ≥ 90

267

173

74

  < 90

19

12

6

  1. BED biologically effective dose, CTV clinical target volume, Fr fractions, GTV gross tumor volume, Gy gray, MV megavoltage, PTV planning target volume, RTRT real-time tumor-tracking radiotherpay, SBRT stereotactic body radiotherapy
Back to article page

Radiation Oncology

ISSN: 1748-717X

Contact us