Tag: CT scan

Dear Dr. Roach: Could you please explain in layman terms the difference between an X-ray, CT scan, MRI and PET scan? — C.D.B. Answer: All four of these tests provide images of the body, which…

Dear Dr. Roach: Is it possible for X-rays and a CT scan to miss advanced lung cancer? My brother worked two days before he died. He went to the hospital, was admitted to hospice and…