Don't worry too much if you don't pass exams, so long as you feel you have understood the subject. It's amazing what you can get by the ability to reason things out by conventional methods, getting down to the basics of what is happening.
Godfrey Hounsfield
During the development of the whole-body CT scanner, it became clear that the availability of an accurate cross-sectional picture of the body, the CT 'slice,' would have an important effect on the precision and implementation of radiotherapy treatment planning.
In the past, radiation treatment planning has been a very lengthy procedure. Now, with the aid of CT therapy-planning computer programs, we can position the therapy beams automatically with precision in a few minutes.
Some time ago, I investigated the possibility that a computer might be able to reconstruct a picture from sets of very accurate X-ray measurements taken through the body at a multitude of different angles.
I was born and brought up near a village in Nottinghamshire and in my childhood enjoyed the freedom of the rather isolated country life. After the First World War, my father had bought a small farm, which became a marvelous playground for his five children.
Apart from my work, my greatest pleasures have been mainly out-of-doors, and although I no longer ski, I greatly enjoy walking in the mountains and leading country rambles. I am fond of music, whether light or classical, and play the piano in a self-taught way. In company, I enjoy lively, way-out discussions.
On a farm, you can get very bored.
The periods between my 11th and 18th years remain the most vivid in my memory because this was the time of my first attempts at experimentation, which might never have been made had I lived in the city. I made hazardous investigations of the principles of flight, launching myself from the tops of haystacks with a homemade glider.
Aeroplanes interested me, and at the outbreak of the Second World War, I joined the RAF as a volunteer reservist. I took the opportunity of studying the books which the RAF made available for radio mechanics and looked forward to an interesting course in radio.
I joined the staff of EMI in Middlesex in 1951, where I worked for a while on radar and guided weapons and later ran a small design laboratory. During this time, I became particularly interested in computers, which were then in their infancy. It was interesting, pioneering work at that time: drums and tape decks had to be designed from scratch.
