欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
目的：比较PRESS和STEAM序列对大脑中央前回的代谢物绝对定量的差异。方法：8例健康成年人,平均年龄26.1岁。使用PRESS序列及STEAM序列进行定量检测,实验参数为TE=30ms,TR=3000ms。扫描时间每次约30min。结果：PRESS和STEAM序列使用LCModel软件分析得出Cr的浓度存在显著的差异性,并认为实验结果与序列的特征以及受邻近代谢物峰值影响有关,而对NAA、Cho、Glx、MI、NAA/Cr、Cho/Cr、MI/Cr、Glx/Cr没有显著差异。结论：在短TE条件下,STEAM序列对绝对定量的准确性较PRESS序列稍高。在短TE情况下,Cr物质受到邻近物质峰值影响,使基线不平稳。
英文摘要：
Objective：To analyze the metabolic concentration difference in anterior central gyrusby absolutely quantitative 1 H-MR spectroscopy combined with PRESS or STEAM sequences.Methods：8 healthy volunteers with an average age of 26.1 years old were selected in this study.All the 1 H-MR spectroscopy data were collected by PRESS and STEAM sequence.The scan parameters were as follows i.e,TE=30 ms,TR=300 ms.The duration of every examination was about half an hour.Results：The concentrations of Cr were statistically significant if we compared the data between PRESS and STEAM sequences with LCModel software.Conclusion：STEAM sequence is more sensitive for the short T2 metabolic,such as Glx and mI.The peak of Cr will be affected by the adjacent complicated metabolic peaks when the TE is quite short,which makes the baseline unsteadily.
同期刊论文项目
同项目期刊论文
Improved measurement of labile proton concentration-weighted chemical exchange rate (kws) with exper
Evaluation of the dependence of CEST-EPI measurement on repetition time, RF irradiation duty cycle a
Quantification of Choline Concentration Following Liver Cell Apoptosis using1 H Magnetic Resonance S
Human umbilical mesenchymal stem cell and its adipogenic differentiation profiling by nuclear magnet
Advanced nasopharyngeal carcinoma radiotherapy with volumetric modulated arcs and the potential role
Quantitative Proton Magnetic Resonance Spectroscopy of Human Precentral Gyrus and Hippocampus: Absol
Electrophysiological correlates of proactive interference in the 'Recent Probes' verbal working memo
Helical CT findings and clinicopathologic features in malignant gastrointestinal stromal tumors: the
MR Spectroscopy Study of Amnestic Mild Cognitive Impairment and Vascular Cognitive Impairment with N
Transarterial embolization using pingyangmycin lipiodol emulsion and polyvinyl alcohol for the treat
The 1.28 ppm biomarker: not specific for neural progenitor cells, but also in the mesenchymal stem c
Anterior cingulate cortex and cerebellar hemisphere neurometabolite changes in depression treatment:
Extraction methods-based analysis of the human umbilical cord mesenchymal stem cells on 9.4 T high-r
1H-Proton Magnetic Resonance Spectroscopy Differentiates Dementia with Lewy Bodies from Alzheimer&rs
Quantitative chemical exchange saturation transfer (qCEST) MRI - RF spillover effect-corrected omega
位置：