计算机图像处理在医学影像中的应用主要在四个方面：：第一类：计算机 X

计算机图像处理在医学影像中的应用主要在四个方面：：<br>第一类：计算机 X 光断层扫描技术，也被临床医学称为 CT，主要是结合人体不同组织吸收 X 光程度后产生的吸收和透 过率差异进行病变判断，这种技术的应用要借助有效的仪器对人体进行集中测量 [22] [23]。 <br>第二类：核磁共振影像技术，这是近几年应用非常广泛的技 作者单位 ：中南大学信息科学与工程学院，湖南长沙 410083 术体系，主要是将人体置于较为特殊的磁场内部，利用无线电射频脉冲刺激人身体内部的氢原子核，结合其吸收能量的数值，依据接收器予以收集，获得图像。 <br>第三类：超声波影像技术，主要是利用超声波对人体组织 或者是器官进行照射，结合阻抗和衰减特性的差异形成相应的 影像，随着技术的不断发展，超声影响逐渐向 3D 实时成像系 统发展 [24]。 <br>第四类：PET 技术，主要是核医学领域较为常见，利用放射 性核素标记完成诊断和分析 [25]

The application of computer image processing in medical imaging is mainly in four aspects:<br>Class I: computer X-ray tomography technology, also known as CT in clinical medicine, is mainly used to judge the lesions in combination with the differences in absorption and transmittance of different human tissues after absorbing X-rays. The application of this technology requires the centralized measurement of the human body with the help of effective instruments [22] [23].<br>Class II: nuclear magnetic resonance imaging technology, which is widely used in recent years. The author unit: School of information science and engineering, Central South University, Hunan Changsha 410083 technology system, mainly places the human body in a special magnetic field, uses the radio frequency pulse to stimulate the hydrogen nucleus in the human body, combines the value of its absorbed energy, and collects it according to the receiver, Get images.<br>Category III: ultrasonic imaging technology mainly uses ultrasound to irradiate human tissues or organs, and forms corresponding images in combination with the differences of impedance and attenuation characteristics. With the continuous development of technology, the impact of ultrasound is gradually developing to 3D real-time imaging system [24].<br>Category IV: PET technology, mainly common in the field of nuclear medicine, uses radionuclide markers to complete diagnosis and analysis [25]

The application of computer image processing in medical images is mainly in four aspects: The first category: Computed X-ray tomography, also known as CT in clinical medicine, mainly combines the differences in absorption and transmittance of different tissues of human body after absorbing X-ray, and the application of this technology requires centralized measurement of human body with effective instruments [22] [23]. The second category: nuclear magnetic resonance imaging technology, which is widely used in recent years by technical authors: School of Information Science and Engineering, Central South University, Changsha, Hunan 410083 operation system, which mainly puts the human body in a special magnetic field, uses radio frequency pulses to stimulate the hydrogen nuclei inside the human body, and collects them according to the receiver to obtain images. The third category: ultrasonic imaging technology, which mainly uses ultrasonic to irradiate human tissues or organs, and forms corresponding images with the difference of impedance and attenuation characteristics. With the continuous development of technology, the influence of ultrasonic gradually develops to 3D real-time imaging system [24]. The fourth category: PET technology, mainly common in the field of nuclear medicine, uses radioactive nuclide labeling to complete diagnosis and analysis [25]