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15X/18X for Small Lung PTVs

Page 1
Q1 w
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Do you ever used 15X or 18X for small lung PTVs?

  • Answered: 64
  • Skipped: 0
Created with Highcharts 10.3.30%10%20%30%40%50%60%70%80%90%100%10…
YesNoComment
Answer Choices –
Responses –
–
Yes
9.38%
6
–
No
89.06%
57
–
Responses
Comment
1.56%
1
TOTAL64
Q2 w

If yes, under what circumstances would you use 15X or 18X for small lung PTVs?

  • Answered: 23
  • Skipped: 41
Was only used for APPA treatments
2/18/2021 10:32 PM
None.
9/29/2020 07:24 PM
Nope
9/23/2020 04:59 PM
Any lung tumor with field size 5x5 or greater. Beans from multiple angles.
9/22/2020 10:29 PM
N/A
9/22/2020 08:52 PM
Never
9/22/2020 08:22 PM
I would never.
9/22/2020 04:36 PM
Yes, though hesitantly. There is only one way that I can see it being advantageous over lower energy fields and that is if the beam must traverse through significant tissue (15-20+ cm)and < a few cm of lung (ideally, no lung) prior to reaching the target. Please look at p. 228-229 Khan 4th Edition Ch 12 B.3. & B.4
9/22/2020 04:03 PM
For large body habitus.
9/22/2020 03:45 PM
na
9/22/2020 02:52 PM
Q3 w
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If yes, what technique would you use?

  • Answered: 25
  • Skipped: 39
Created with Highcharts 10.3.30%10%20%30%40%50%60%70%80%90%100%10…
3DConformal Arc
Static Gantry
IMRT
VMAT
Other (please
specify)
Answer Choices –
Responses –
–
3D
40.00%
10
–
Conformal Arc
4.00%
1
–
Static Gantry IMRT
12.00%
3
–
VMAT
20.00%
5
–
Responses
Other (please specify)
48.00%
12
Total Respondents: 25 
Q4 w

Please list any useful reference articles on whether or not to use 15X or 18X for small lung PTVs.

  • Answered: 11
  • Skipped: 53
Q5 w

Please add any comments on the use of 15X or 18X for small lung PTVs.

  • Answered: 23
  • Skipped: 41
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