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正电子发射型计算机断层扫描(positron emission compu—ted tomography,PET)单光子发射型计算机断层扫描(single photon emission computed tomography,SPECT)发射型计算机断层扫描(emission computed tomography,ECT)氟脱氧葡萄糖(fluorodeoxygIucose,FDG)感兴趣区(region of interest,