How much radiation for SBRT?

[StrongFives]

I had 5 SBRT treatments 18 months ago. All Good so far. I noticed in a study posted by Tall Allen that most SBRT recipients get about 80 gy but I only had 36. Doc told me I needed less because administered in short time period with increased intensity. How much radiation is typical for SBRT? Was I shortchanged? Thanks all.

[Tall_Allen]

80 Gy is for conventional IMRT; it is done in 40-44 treatments. SBRT is 35-40 Gy in 5 treatments. The biologically effective dose is actually higher.

[StrongFives in reply to Tall_Allen]

Thanks very much!!

[Uxp_d in reply to Tall_Allen]

Hi Tall Allen I am Terence Allen UK treatment 11years ago RT and HIFU now having trouble passing urine, recommended Flexable Cystocomy, found strictures, but got major problem a week after peeing hot knives /battery acid, but now after eating or drinking acid food lemon or vinegar it comes back, they recommend self catheter, but this started all this, and its been on and off for some time now I am 81 and on ADT any thoughts ?

[Tall_Allen in reply to Uxp_d]

Does pyridium provide relief from the burning? Avoid caffeine, fruit juices, and acidic beverages.

[Uxp_d in reply to Tall_Allen]

Hi Tall Allen thanks but antibiotics sorted it,now left with sensitive bladder, T,Allen

[ODave]

I had 36 also it’s pretty standard they said

[StrongFives in reply to ODave]

Thanks very much!!

[Maxx2006]

I had 5 sessions of SBRT last year with 30 gy total. No side effects PSA dropped quickly from 14 the beginning of December 2020 to 0.3 in March 2021. I am on 1000 mg of Zytiga and 90 day shot of Lupron.