PET-CT is a good modality for localization of the malignant lesions. It is superior to PET in the diagnosis, localization and guiding treatment for head and neck cancer.
CT能对恶性肿瘤病灶进行准确定位，在头颈部肿瘤的诊断、定位及指导临床治疗方面与单纯PET相比具有明显的优势。
Conclusion: the demonstration of the soft tissue lesions of pharynx by MRI was much more better than by conventional X-ray and CT, furthermore with accuracy in localization and qualification.
结论：MRI对咽部软组织病变的显示远优于常规X线和CT，并可作出正确的定位、定性诊断。
Objective to define whether there exists correlation between the cognitive dysfunction and the locus of brain lesion and to map the localization of brain lesions for different cognitive dysfunction.
目的明确认知障碍与脑损害部位是否有必然的联系，探索不同的认知障碍在脑部相应区域的定位。
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