It was a minor stroke he recovered from a week at hospitalbut to be on the safe side, the physicians recommended a sort of radiation evaluation they said could help them determine the precise place the congestion existed in which had induced the blood circulation problem in his mind. The radiation evaluation was a process known as the CT brain perfusion scanning; it was sort of frightening to hear - it had been to beam the equivalent of countless x-rays values of radiation to his mind. We may ha...