Are you concerned about fiducials shifting within the prostate during prostate IMRT?

I think that it is important to consider what type of on-board imaging is being utilized. If it is a CBCT, then there will be additional information that can be interrogated when determining how to adjust shifts. If it is a fiducial match protocol, then I think that it is important to keep abreast o...

There have been studies on this subject published >10 years ago. The bottom line is that movement of prostatic fiducial markers should be none to minimal (i.e., not clinically significant) through the course of treatment.

We do get CBCT's once per week in intact cases, on top of daily kVs to localize...

I began doing routine fiducial placement and daily kV IGRT around 2004. I essentially switched from non-IGRT to IGRT "overnight" once I had the opportunity to start using and working with an IGRT system (at that time, it was Exactrac, and was the only way to do stereoscopic kV X-ray IGRT in 2004; no...