Magnetic Resonance Imaging (MRI). Guide. Magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to make pictures of organs and structures inside the body.In many cases, MRI gives different information about structures in the body than can be seen with an X-ray, ultrasound, or computed tomography (CT) scan.n MRI scan can be done for the: 1  Head. 2  MRI can look at the brain for tumors, an aneurysm, bleeding in the brain, nerve injury, and other problems, such as damage caused by a stroke. 3  MRI can also find problems of the eyes and optic nerves, and the ears and auditory nerves.
:: a brief history of CT. The first clinical CT scan on a patient took place on 1st October 1971 at Atkinson Morley's Hospital, in London, England.
Scroll down below the mitral valve repair diagram for the answer. According to G. Wayne Miller, in King Of Hearts: The True Story Of The Man Who Pioneered Open Heart Surgery, the first successful mitral valve repair surgery, a commissurotomy, was performed on June 10, 1948. So, the answer to our trivia question is B. If you are curiousâ¦ The surgery was performed by Dr. Charles P. Bailey at Episcopal Hospital in Philadelphia, Pennsylvania. It was Dr. Baileyâs fifth attempt at a mitral valve repair surgery.