I'm currently undergoing 20 sessions of external photon beam on an Ethos Hypersight machine somewhat capable of real-time adaptive planning depending on what changes are observed in the target from day to day. Its early days for AI, but AI planning assistance is touted as one of the features. It can also deliver SBRT. It has an advanced CT scanning system that improves the ability of the operators to know if they are hitting the target.

I saw a Duke webpage dated January 2025 announcing that they had one of these. Your husband may even be being treated on one. If that machine was involved, because it can cope with patient changes more than most machines, things must have been pretty far out of whack for the operators to call things off.

I would welcome any delay like what you describe. The last thing you want is high powered radiation directed at the wrong target causing side effects. These treatments are dangerous. There are possible side effects that are very difficult or not possible to deal with effectively that have drastic implications for quality of life.

It takes me 3 1/2 hours to get to the treatment center, and because of that I rent a room in one of the somewhat subsidized housing units the treatment facility has for the 5 days of each week I get treatments. Nevertheless, I would not complain if the treatment schedule was revamped no matter what inconvenience it caused me.

One of the prime factors in my decision as to whether I would accept being treated by this doctor at this facility was do I believe in my Radiation Oncologist. My confidence is based on do I trust him, and do I think he is at the top of his field.

I believe in my RO. I'm grateful to be his patient. I still present him my doubts and with any questions that come up in my mind. Every time I get a serious doubt I do some research to try to get up to speed, and I discuss things with this guy. So far, I am always reassured by his answer.

Your husband's doctors will produce a report that explains what happened. If what you describe happened to me, I'd be studying that report, and questioning the RO.

It sounds like they are very competent and unafraid of re-doing everything they've done so far if they think it warranted, i.e. like a new simulation and plan. It is most likely that their prime interest is that the outcome of their treatment on your husband is the best they can do.

I hope things go well for your husband.