- Joined
- Sep 2, 2015
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I agree with evilbooya. Two field tangents probably isnt conformal enough to be called SBRT. I use VMAT it works great.Let me challenge your premises...
When I do 5 fraction breast, I do it IMPORT-LOW (intensity modulated partial organ RT) style with 2-field opposed mini-tangents ("The results of FAST-Forward were planned to be taken together with those of IMPORT LOW, which had the same control regimen of 40 Gy in 15 fractions to the whole breast and, therefore, are applicable to partial-breast radiotherapy"). To me, two-field (IMRT) tangents, just because the MUs per tangent are higher, are not SBRT. Will I have to go multi-field to "bump up" into $BRT? Will 8 Gy/1 fx bone met become SBRT?
Also, again, EBM-wise, not a single PBI trial has defined PBI as SBRT, just IMRT.
Tough hill to climb. I'm swayable though.
I wouldnt call 8Gy/1 fraction SBRT. SBRT should have at least a moderate BED. I dont think anything with a BED less than 25 Gy in 5 fractions should be considered SBRT.
I dont know how tough a hill it will be to climb. I guess we will see. Maybe @Rad Onc SK can help us out?