下列属于电离辐射的是 Which of the following is ionizing radiation?
A、电脑产生的辐射 Radiation generated by computer
B、电吹风产生的辐射 Radiation generated by hair drier
C、手机产生的辐射 Radiation generated by mobilephone
D、DR产生的辐射 Radiation generated by DR
A、电脑产生的辐射 Radiation generated by computer
B、电吹风产生的辐射 Radiation generated by hair drier
C、手机产生的辐射 Radiation generated by mobilephone
D、DR产生的辐射 Radiation generated by DR
A.X射线
B.微波
C.激光
D.红外线
E.紫外线
A、单位体积内放射性核素的数目 Number of radionuclides per unit volume
B、单位时间内发生核衰变的次数 Number of radionuclide decay per unit time
C、单位时间内核衰变释放的能量 Energy released by radionuclide decay per unit time
D、核素半衰期的2倍 2 times the half-life of the radionuclide
E、放射性核素半衰期 Half-life of radionuclides
A、低活度核素 Radionuclides of low radioactivity
B、短半衰期核素 Radionuclides of short half-life
C、大原子序数核素 Radionuclides of large atomic number
D、长寿命核素 Radionuclides of long half-life
A、PET图像和CT图像的融合图像 Fusied image of CT image and PET image
B、图像定位更准确 More accurate location of lesion
C、发现早期癌变 Detecting tumors at early stage
D、功能图像 Functional imaging
A、DR
B、B超
C、CT
D、PET /CT
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