Definition of coronary artery:
The coronary artery is located in the coronary groove of the heart. It is named because the coronary groove is distributed in the heart like a crown, so it is named the coronary groove. This is how the coronary arteries get their name.
CT definition:
CT is a fully functional disease detection instrument, which is the abbreviation of computerized X-ray tomography technology. The working procedure of CT is as follows: it uses extremely sensitive instruments to measure the human body based on the differences in X-ray absorption and transmittance of different tissues of the human body, and then inputs the data obtained from the measurement into an electronic computer, which then After the data is processed, cross-sectional or three-dimensional images of the examined parts of the human body can be taken to detect small lesions in any part of the body. Since the discovery of X-rays, they have been used in medicine to detect human diseases. However, because some organs in the human body have very little difference in absorption of X-rays, it is difficult for X-rays to detect lesions in overlapping tissues. As a result, scientists in the United States and the United Kingdom began to look for a new thing to make up for the shortcomings of using X-ray technology to detect human lesions. In 1963, American physicist Cormac discovered that different tissues of the human body have different transmittances to X-rays. During the research, he also derived some relevant calculation formulas, which laid the theoretical foundation for the subsequent application of CT. In 1967, British electronics engineer Hounsfield began work on developing a new technology without knowing the results of Cormac's research. He first studied pattern recognition and then built a simple scanning device that enhanced the X-ray source, later known as the CT, for experimental scanning measurements of the human head. Later, he used this device to measure the whole body and achieved the same effect. In September 1971, Hounsfeld collaborated with a neuroradiologist, installed the device he designed and manufactured in a hospital outside London, and began head examinations. On October 4, the hospital used it to examine its first patient. The patient lies on his back when he is fully awake. The X-ray tube is installed above the patient and rotates around the examination site. At the same time, a counter is installed below the patient so that the amount of X-ray absorption by various parts of the human body is reflected on the counter. Computer processing allows images of various parts of the human body to be displayed on the screen. The trial was very successful. In April 1972, Hounsfield announced this result for the first time at the British Annual Meeting of Radiology, officially announcing the birth of CT. This news caused great shock in the scientific and technological circles. The successful development of CT was hailed as the most important achievement in radiological diagnosis since Roentgen discovered X-rays. Therefore, Hounsfeld and Cormac won the 1979 Nobel Prize in Physiology and Medicine. Today, CT has been widely used in medical diagnosis.
To sum up, it should be coronary artery CT examination.