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所谓的CT(Computerized tomography)是运用电子计算机优良的信息处理技术,测量人体断层图像的方法.自1972年开发X线CT以来,新方法、新设备不断涌现,给医学领域带来了划时代的发展.例如,利用X线技术测量人体组织形状的X线CT,利用氢原子的核磁共振测量人体水分分布及水分结合状态图像的MRI(magnetic resonance imaging).利用放射线同位素(RI)γ线测量脏器形状的SPECT(single-photon emission CT)及利用阳电子释放出RI的PET(positron emission tomography)等均已进入临床使用,并在医学图像诊断方面取得成果.
The so-called computerized tomography (CT) is a method of measuring images of the human body using the excellent information processing technology of electronic computers.With the development of X-ray computed tomography (CT) in 1972, new methods and new devices are constantly emerging, bringing epoch-making developments to the medical field For example, X-ray computed tomography (CT) using human body tissue using X-ray technique, MRI (magnetic resonance imaging) of measuring human body water distribution and water binding state by hydrogen nuclear magnetic resonance, Shape-specific single-photon emission CT (PET) and positron emission tomography (PET) using positron emission are now in clinical use and have achieved results in medical image diagnosis.