When using chemoRT for bladder preservation in muscle invasive bladder cancer after maximal TURBT, how should the mid-point (40 - 45 Gy) cystoscopy be utilized?

The thought is that medically inoperable patients go straight through (since no point in evaluation, b/c they won't be getting cystectomy), but for medically operable patients, they may be better served by cystectomy after a cystoscopy that does not show a CR, and that has been the RTOG approach. Ho...