The goal of this clinical trial is to learn if the use of MRI-guided irradiation increases the rates of bladder preservation as well as to decrease complications in patients with muscle invasive bladder cancer who wish to retain their bladders
Karnofsky performance status > 70 with medical condition not contraindicating treatment with radical intent including maximal TURBT and concomitant chemotherapy;
WBC equal or greater than 3500 mm3; platelet count equal or greater than 135000 mm3; hemoglobin equal or greater than 10 gr/L; BUN equal or less than 20; serum creatinine equal or less than 2.0.
Prior radiation therapy to the target areas;
Inability to undergo a MRI exam