ESTRO meets Asia 2024 - Abstract Book
S192
Interdisciplinary – Head & neck
ESTRO meets Asia 2024
10
89.6
17
75.6
93
1.55
0.69
65.2
51
7
14.4
95.5
52.2
85.9
108
1.59
0.71
69.2
58.7
8
9.4
83.6
13.5
75.4
92.5
1.75
0.72
56.5
43.5
9
7.8
75.7
7.6
63
82.1
1.1
0.48
89
48.2
10
Median 9.7
89.25
17.8
75.5
92.5
1.535
0.705
64.6
50.6
10.56
87.72
22.79
75.79
95.14
1.648
0.759
64.99
50.24
Mean
Table 2 - Comparison between manually calculated total EQD2 and DIR calculated total dose received by PTV
EQD2 MANUAL (EQD2 BT + EQD2 EBRT) (Gy)
EQD2 FOR D90 BT (Gy)
EQD2 FOR D98 EBRT (Gy)
DIR D98 (Gy)
PTV
PT. NO
DIR PTV D90 (Gy)
1
20.85
13.8
34.65
59
42.5
2
22.93
11.1
34.03
53.6
36.7
3.
13.3
11.8
25.1
46.6
28.8
4
19.5
32.8
52.3
60
52
5
18.8
43
61.8
39.8
21.4
6
21.7
44.8
66.5
70
66.2
7
17.4
39.8
57.2
69.3
52.9
8
19.9
43.9
63.8
68.1
61.1
9
20.5
4.9
25.4
47.9
29.5
10
7
2.3
9.3
42.6
19
Median dose (Gy) Mean dose (Gy)
17.85
24.8
43.3
56.3
39.6
16.75
25.97
42.72
55.69
41.01
Conclusion:
DIR software-based dose summation provides accurate dose delivered to target and oars and if performed prospectively can potentially enable optimization of limiting doses to critical OARS, thus reducing post RT morbidity.
Keywords: Brachytherapy, Deformable Image, Radiation Dose
References:
1. Kulkarni MR. Head and Neck Cancer burden in India. Int J Head Neck Surg. 2013 Apr 4;(1): 29-35.
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