thank you. I played hard in my youth, and hope not to suffer the consequences of all that radiation. My best wishes to your wife.
The only "cure" I know of is preventative - avoid radiation.
Given you level of exposure I would think you would subject yourself to further exposure as a last choice.
I have not done any research, but my wife who suffers from cancer has periodic CT scans, and there is an effort to spread the out.. or said again, non-exposure is the best cure.