磁共振波谱在诊断颅内肿瘤中的应用课件.ppt
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- 关 键 词:
- 磁共振 波谱 诊断 肿瘤 中的 应用 课件
- 资源描述:
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1、Department of NeurosurgeryPeking University Peoples HospitalDepartment of NeurosurgeryPeking University Peoples HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking U
2、niversity PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals Hospital
3、Department of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking U
4、niversity PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryPeking University Peoples HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking U
5、niversity PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals Hospital
6、Department of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking U
7、niversity PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals Hospital
8、Department of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking University PeoplePeking University Peoples Hospitals HospitalDepartment of NeurosurgeryDepartment of NeurosurgeryPeking U
9、niversity PeoplePeking University Peoples Hospitals HospitalNAANAAChoChoCrCrCr2Cr2正常正常Cho/CrCho/Cr、Cho/NAACho/NAA比比值范围约为值范围约为0.789-0.5450.789-0.545NAA/ChoNAA/Cho比值的范围约为比值的范围约为1.267-1.8351.267-1.835 Department of NeurosurgeryPeking University Peoples HospitalN-N-乙酰天门冬氨酸乙酰天门冬氨酸(NAA)(NAA)显著下降显著下降胆碱胆碱(C
10、ho)(Cho)显著升高显著升高 肌酸肌酸(Cr)(Cr)不变或轻度下降不变或轻度下降可出现乳酸盐(可出现乳酸盐(Lac/LipLac/Lip)NAA/CrNAA/Cr下降下降 NAA/ChoNAA/Cho减少减少Cho/CrCho/Cr升高升高 -肿瘤对神经元的破坏肿瘤对神经元的破坏 -肿瘤细胞增殖活跃和有丝分裂增加肿瘤细胞增殖活跃和有丝分裂增加-胶质瘤发生坏死胶质瘤发生坏死ChoChoCr2Cr2CrCrNNANNALacLac星形细胞瘤随胶质瘤级别增加,随胶质瘤级别增加,NAANAA逐渐下降,逐渐下降,ChoCho逐渐升高逐渐升高Cho/NAACho/NAA和和Cho/CrCho/Cr比
11、值反映肿瘤级别比较稳定,比值反映肿瘤级别比较稳定,在所有的胶质母细胞瘤中均升高在所有的胶质母细胞瘤中均升高 LacLac峰可出现于各级别组脑胶质瘤中,其峰值无峰可出现于各级别组脑胶质瘤中,其峰值无 显著差异显著差异Cho/NAA高级别胶质瘤高级别胶质瘤低级别胶质瘤低级别胶质瘤瘤体实质区瘤体实质区2.301.3522时,患者时,患者1 1年生存率为年生存率为20%20%,而,而Lac/NAALac/NAA值值21.31.3即可即可诊断胶质瘤复发,诊断胶质瘤复发,1.31.71Cho/Cr1.71或或/(/(和和)Cho/NAA1.71)Cho/NAA1.71作为区分复发和作为区分复发和坏死的标准
12、坏死的标准ChoCho明显增高及合并明显增高及合并LacLac、NAANAA、CrCr的异常,提示胶质的异常,提示胶质细胞瘤治疗后复发;治疗后细胞瘤治疗后复发;治疗后ChoCho下降或保持稳定者,下降或保持稳定者,则肿瘤生长受到抑制则肿瘤生长受到抑制 MRSMRS见依旧明显增高见依旧明显增高ChoCho峰峰、下降的、下降的CrCr峰峰表明肿瘤细胞仍存在表明肿瘤细胞仍存在对应右侧额叶对应右侧额叶MRSMRSCrCrCrCrChoChoChoChoNNANNAMRSMRS见见NNANNA、ChoCho、CrCr峰均峰均消失消失无复发迹象无复发迹象对应右侧额叶对应右侧额叶MRSMRSCrCrChoC
13、hoNNANNAMRIMRI提示原手术病灶未见提示原手术病灶未见明显异常明显异常MRSMRS见见ChoCho峰增高峰增高提示复发提示复发对应右侧额叶对应右侧额叶MRSMRSCrCrChoChoNNANNAChoChoNNANNADepartment of NeurosurgeryPeking University Peoples Hospital脑膜瘤无神经元,故理论上无脑膜瘤无神经元,故理论上无NAANAA峰峰胆碱胆碱(Cho)(Cho)升高升高 出现特征性丙氨酸出现特征性丙氨酸(Ala)(Ala)峰峰可出现谷氨酸可出现谷氨酸(Glx)(Glx)峰峰 强化区域外没有病理性波谱强化区域外没有病
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