What does CT mean?

CT is a full-featured disease detection instruments, it is the electronic computer X-ray tomography technology referred to as the CT work program is this: it is based on the different tissues of the human body on the X-ray absorption and transmittance of different, the application of highly sensitive instruments on the human body to carry out measurements, and then the measurements of the data obtained by the input of electronic computers, electronic computers to process the data, can be ingested human body to be examined part of the cross-section or three-dimensional images. After processing the data, the computer can take a cross-section or three-dimensional image of the inspected part of the human body, and discover small lesions in any part of the body. Since the discovery of X-rays, medical science has begun to use it to detect human diseases. However, due to some organs in the human body to the X-ray absorption difference is very small, so X-rays on those before and after the overlap of the tissue lesions will be difficult to find. So, the United States and the British scientists began to look for a new thing to make up for the lack of X-ray technology to check the human body lesions. 1963, the United States physicist Cormac found that different tissues of the human body on the X-ray transmission rate is different, in the study also came up with some relevant formula, these formulas for the later application of CT laid the theoretical foundation. 1967, the British electronic engineer Hen Sfeld, unaware of the results of Cormac's research, also began the development of a new technology. He first studied pattern recognition, and then built a simple scanning device, later known as CT, to enhance the X-ray radiation source for experimental scanning and measurement of the human head. Later, he used this device to measure the whole body, obtaining the same results.In September 1971, again in collaboration with a neuroradiologist, Hengsfeld began head examinations by installing the device he had designed and built in a hospital outside London.On October 4, the hospital examined its first patient with it. The patient is fully awake in the case of supine, X-ray tube installed in the patient's upper, around the inspection site rotation, while the patient below a counter, so that all parts of the human body on the amount of X-ray absorption is reflected in the counter, and then through the processing of electronic computers, so that all parts of the human body from the screen image shows up. The test was very successful, in April 1972, Hengsfeld in the United Kingdom Radiology Annual Meeting for the first time announced the results, officially announced the birth of CT. This news caused a great shock to the scientific and technological community, the successful development of CT is known as since the discovery of X-rays by R?ntgen, the most important achievements in diagnostic radiology. As a result, Hengsfeld and Cormac*** were awarded the 1979 Nobel Prize in Physiology and Medicine. Today, CT is widely used in medical diagnostics.