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水抑制酰胺质子转移加权成像抑制治疗后胶质瘤液性成分信号的可行性研究
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作者 侯静文 张墀 +3 位作者 苏春秋 赵献策 曹远东 鲁珊珊 《磁共振成像》 2025年第9期40-45,共6页
目的探讨水抑制酰胺质子转移加权(fluid-suppressed amide proton transfer-weighted,FS-APTw)成像抑制治疗后胶质瘤液性成分信号的可行性。材料与方法前瞻性纳入经外科手术及病理证实、术后接受标准放化疗的胶质瘤患者59例,均接受酰胺... 目的探讨水抑制酰胺质子转移加权(fluid-suppressed amide proton transfer-weighted,FS-APTw)成像抑制治疗后胶质瘤液性成分信号的可行性。材料与方法前瞻性纳入经外科手术及病理证实、术后接受标准放化疗的胶质瘤患者59例,均接受酰胺质子转移加权(amide proton transfer-weighted,APTw)和FS-APTw检查。将APTw及FS-APTw图与解剖图配准融合,获得液性区、水肿区、可测量强化区的APTw与FS-APTw信号强度值(%),采用配对样本t检验或者Wilcoxon秩和检验进行对比分析。进一步根据液性区液体衰减反转恢复(fluid-attenuated inversion recovery,FLAIR)和扩散加权成像(diffusion weighted imaging,DWI)信号特点进行亚组分析(组1,FLAIR及DWI均为低信号;组2,FLAIR等/高信号,DWI低信号;组3,FLAIR等/高信号,DWI均匀高信号或高低混杂),采用Kruskal-Wallis秩和检验对三组液性区的水抑制效果进行对比分析,组间两两比较采用校正Bonferroni法。结果采用水抑制后,治疗后胶质瘤液性区、水肿区的FS-APTw值较APTw值均明显下降(1.37%vs.1.67%;1.03%vs.1.14%;P均<0.05);但可测量强化区FS-APTw值较APTw值比较,差异无统计学意义(2.16%vs.2.22%,P=0.404)。亚组分析显示:三组液性区的基线APTw值均存在差异,组2及组3的APTw值明显高于组1(3.80%,1.85%vs.1.00%,P均<0.05)。压水后,三组液性区的FS-APTw值较APTw值均有显著下降(P均<0.05),其中组2的APTw下降最明显(-1.23%)。结论FS-APTw能够在不影响实质区信号的前提下有效抑制治疗后胶质瘤液体成分的APTw值,尤其对富含蛋白的液性区(FLAIR等/高信号、DWI低信号)水抑制作用最为明显。 展开更多
关键词 胶质瘤 水抑制 液性成分 酰胺质子转移加权成像 磁共振成像
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Chromatographic fingerprint analysis of Fructus Aurantii Immaturus by HPLC-DAD and chemometric methods 被引量:4
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作者 徐小娜 蒋军辉 +3 位作者 梁逸曾 李晓如 易伦朝 成金乐 《Journal of Central South University》 SCIE EI CAS 2011年第2期353-360,共8页
An efficient method for quality control of Fructus Aurantii Immaturus (FAI),a famous traditional Chinese medicine (TCM) was established. A simple and reliable high-performance liquid chromatography-photodiode array de... An efficient method for quality control of Fructus Aurantii Immaturus (FAI),a famous traditional Chinese medicine (TCM) was established. A simple and reliable high-performance liquid chromatography-photodiode array detector (HPLC-DAD) procedure coupled with chemometric methods was developed for fingerprint analysis,qualitative analysis and quantitative determination of this herb. In qualitative and quantitative analyses,heuristic evolving latent projection (HELP) method was employed to resolve the overlapping peaks of the tested samples. Two bioactive components,namely hesperidin and naringin,are confirmed and determined,together with four flavonoids compounds tentatively identified including two new ones. From fingerprint analysis,the fingerprint data were processed with correlation coefficients for quantitative expression of their similarity and dissimilarity. The developed method based on an integration of chromatographic fingerprint and quantitative analysis is scientific,and the obtained results can be applied to the quality control of herb medicine. 展开更多
关键词 FINGERPRINT quality control Fructus Aurantii Immaturus high-performance liquid chromatography heuristic evolvinglatent projection method HESPERIDIN NARINGIN
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