SPM5软件分析癫痫患者脑PET图像的应用研究

Objective To investigate the value of statistical parametric mapping 5 (SPM5) and its parameter settings in analysis of PET imaging for epilepsy patients. Methods Seventeen epilepsy patients and seventeen controls were scanned with PET. The datns were analyzed using PET and SPM5 with qualitative and semiquantitative analysis, statistical analysis of the percentage (numbers of agent distribution decreasing in focus to brain) for different parameters combinations, which were value adjustment to contral-p and voxels-k. Results There was decreasing of agent distribution at temporal lobe in epilepsy patients detecting with PET; the T/NT of focus to cerebellum was 1.07±0.24, the T/NT of normal tissue in opposite side to cerebellum was 1.27±0.18, there was a significant difference (t=1.87, P<0.05). Dealing with SPM5, there was more significant decreasing of agent in regions 19, 21, 39 of temporal lobe, regions 7, 19, 31, 40, 47 of parietal lobe and occipital lobe in epilepsy patients. With different value of k, the percentage was (27±22)%, (29±24)%, (32±23)%, (35±27)%, (39±31)%respectively, there was not significant difference (F=0.59, P>0.05) ; for different value of p, the percentage was (42±30) %, (29±25) %, (26±21) % respectively, with a significant difference (F=3.60, P<0.05); there was linear regression in value adjustment to contral-p and the percentage(b=-18.24, t=2.57, P<0.05). Conclusions Semiquantitative analysis by SPM5, the setting of value adjustment to contral-p would affect the results, the smaller of value adjustment to contral-p, the better of the result. SPM5 would be more objective and accurate to locate the focuses.     

碘131与抗甲状腺药物治疗甲状腺功能亢进症效果比较

目的：比较碘131（131I）与抗甲状腺药物治疗甲状腺功能亢进症（甲亢）的疗效。方法选择浙江大学医学院附属邵逸夫医院新诊断为甲亢的178例患者,按治疗方法不同分为对照组和观察组各89例。对照组给予抗甲状腺药物治疗,观察组给予131I治疗,对比两组疗效、治疗前后三碘甲状腺原氨酸（T3）、四碘甲状腺原氨酸（T4）、促甲状腺激素（TSH）水平、复发率及不良反应。结果观察组治愈率和总有效率明显高于对照组,治疗后血清T3、T4水平低于对照组,TSH水平高于对照组,差异有统计学意义。观察组不良反应发生率和复发率均明显低于对照组,差异有统计学意义。结论131I 治疗甲亢疗效好,作用持久,对白细胞和肝功能的影响较小,但应合理把握适应证及131I 的治疗剂量。     

不同心功能分级慢性心力衰竭患者甲状腺激素改变的临床意义

目的探讨不同心功能分级慢性心力衰竭患者血清甲状腺激素水平的改变及其临床意义。方法采用放射免疫分析法检测43例慢性心力衰竭患者血清甲状腺激素水平的变化，并以同期健康体检者26名血清标本作为对照组。结果病例组血清游离三碘甲状腺原氨酸（FT3）水平明显低于对照组（P〈0．05），血清仅三碘甲状腺原氨酸（rT3）水平高于对照组（P〈0．05）；病例组不同心功能分级患者血清FT3水平均存在差异；心功能受损程度与FT3下降水平存在正相关。结论慢性心力衰竭时甲状腺激素的代谢发生了明显的变化，而且心功能程度与甲状腺激素水平相关，激素含量的改变与疾病严重程度存在一定相关性。     

不同心功能分级慢性心力衰竭患者甲状腺激素改变的临床意义

目的 探讨不同心功能分级慢性心力衰竭患者血清甲状腺激素水平的改变及其临床意义.方法 采用放射免疫分析法检测43例慢性心力衰竭患者血清甲状腺激素水平的变化,并以同期健康体检者26名血清标本作为对照组.结果 病例组血清游离三碘甲状腺原氨酸(FT3)水平明显低于对照组(P<0.05),血清仅三碘甲状腺原氨酸(rT3)水平高于对照组(P<0.05);病例组不同心功能分级患者血清FT3水平均存在差异;心功能受损程度与FT3下降水平存在正相关.结论 慢性心力衰竭时甲状腺激素的代谢发生了明显的变化,而且心功能程度与甲状腺激素水平相关,激素含量的改变与疾病严重程度存在一定相关性.     

SPM5软件分析癫痫患者脑PET图像的应用研究

Objective To investigate the value of statistical parametric mapping 5 (SPM5) and its parameter settings in analysis of PET imaging for epilepsy patients. Methods Seventeen epilepsy patients and seventeen controls were scanned with PET. The datns were analyzed using PET and SPM5 with qualitative and semiquantitative analysis, statistical analysis of the percentage (numbers of agent distribution decreasing in focus to brain) for different parameters combinations, which were value adjustment to contral-p and voxels-k. Results There was decreasing of agent distribution at temporal lobe in epilepsy patients detecting with PET; the T/NT of focus to cerebellum was 1.07±0.24, the T/NT of normal tissue in opposite side to cerebellum was 1.27±0.18, there was a significant difference (t=1.87, P<0.05). Dealing with SPM5, there was more significant decreasing of agent in regions 19, 21, 39 of temporal lobe, regions 7, 19, 31, 40, 47 of parietal lobe and occipital lobe in epilepsy patients. With different value of k, the percentage was (27±22)%, (29±24)%, (32±23)%, (35±27)%, (39±31)%respectively, there was not significant difference (F=0.59, P>0.05) ; for different value of p, the percentage was (42±30) %, (29±25) %, (26±21) % respectively, with a significant difference (F=3.60, P<0.05); there was linear regression in value adjustment to contral-p and the percentage(b=-18.24, t=2.57, P<0.05). Conclusions Semiquantitative analysis by SPM5, the setting of value adjustment to contral-p would affect the results, the smaller of value adjustment to contral-p, the better of the result. SPM5 would be more objective and accurate to locate the focuses.     

18F-FDG符合线路显像诊断鼻咽癌的价值

目的 探讨18F-FDG符合线路显像在鼻咽癌诊断中的价值.方法 回顾性分析45例首发鼻咽癌患者资料,均经病理检查证实,治疗前行18F-FDG符合线路显像,计算鼻咽部病灶的放射性计数与全小脑放射性平均计数比(即T/NT)值及肿瘤体积.采用配对x2检验比较18F-FDG符合线路显像与EB病毒相关抗体检测方法阳性率差异;对T/NT值与肿瘤体积行Pearson相关分析;使用ROC曲线确定T/NT值及肿瘤体积的最佳界值;并采用t检验和秩和检验对比分析不同分组方法组间T/NT值及肿瘤体积的差异.结果 18F-FDG符合线路显像阳性率为97.78％ (44/45),EB病毒相关抗体总阳性率为95.56％ (43/45),两者差异无统计学意义(x2=1.33,P＞0.05).鼻咽部原发病灶T/NT值为2.439±1.119,肿瘤体积为(7.311 ±8.280) cm3,两者呈正相关(r=0.463,P＜0.05).ROC曲线确定T/NT值的最佳界值为2.396,肿瘤体积的最佳界值为7.348 cm3.首发症状有无涕血组间、有无面部麻木组间及各病理类型组间T/NT值差异均有统计学意义(2.847±1.254与2.082±0.863、2.855±1.261与2.134±0.913、2.266±0.997与2.971±1.351,t=- 2.409、-2.225和-2.018,P均＜0.05);首发症状有无面部麻木组间肿瘤体积差异有统计学意义(t=-2.684,P＜0.05).按临床分期及T分期分组,组间T/NT值及肿瘤体积差异均无统计学意义(临床分期H=5.895和1.855,P均＞0.05,T分期H=4.756和0.270,P均＞0.05).结论 18F-FDG符合线路显像诊断鼻咽癌有一定价值,半定量指标T/NT值与肿瘤体积有较好的相关性,T/NT界值的确定需长期大样本研究进一步验证.     

电离辐射损伤与DNA修复基因

DNA辐射损伤直接影响复制、转录和蛋白质合成,进而影响细胞遗传、发育、生长和代谢等生命活动.DNA损伤还是突变的重要原因,而严重的突变可造成细胞癌变,导致肿瘤的发生.然而,生物体内存在着DNA损伤修复系统,其中DNA修复基因起着重要的作用.     

18F-氟代脱氧葡萄糖正电子发射体层显像在感染与炎症病变中的应用

18F-氟代脱氧葡萄糖(18F-fluorodeoxyglucose,18F-FDG)正电子发射体层显像(PET)已成为肿瘤诊断最主要的手段之一,新近研究表明18F-FDG PET、在明确炎症、感染灶的部位和性质方面也有潜力。阐述了感染与炎症摄取18F-FDG的可能机制及18F-FDG PET在感染与炎症病变中的主要应用与进展。     

SPM5软件分析癫痫患者脑PET图像的应用研究

Objective To investigate the value of statistical parametric mapping 5 (SPM5) and its parameter settings in analysis of PET imaging for epilepsy patients. Methods Seventeen epilepsy patients and seventeen controls were scanned with PET. The datns were analyzed using PET and SPM5 with qualitative and semiquantitative analysis, statistical analysis of the percentage (numbers of agent distribution decreasing in focus to brain) for different parameters combinations, which were value adjustment to contral-p and voxels-k. Results There was decreasing of agent distribution at temporal lobe in epilepsy patients detecting with PET; the T/NT of focus to cerebellum was 1.07±0.24, the T/NT of normal tissue in opposite side to cerebellum was 1.27±0.18, there was a significant difference (t=1.87, P<0.05). Dealing with SPM5, there was more significant decreasing of agent in regions 19, 21, 39 of temporal lobe, regions 7, 19, 31, 40, 47 of parietal lobe and occipital lobe in epilepsy patients. With different value of k, the percentage was (27±22)%, (29±24)%, (32±23)%, (35±27)%, (39±31)%respectively, there was not significant difference (F=0.59, P>0.05) ; for different value of p, the percentage was (42±30) %, (29±25) %, (26±21) % respectively, with a significant difference (F=3.60, P<0.05); there was linear regression in value adjustment to contral-p and the percentage(b=-18.24, t=2.57, P<0.05). Conclusions Semiquantitative analysis by SPM5, the setting of value adjustment to contral-p would affect the results, the smaller of value adjustment to contral-p, the better of the result. SPM5 would be more objective and accurate to locate the focuses.     

SPM5软件分析癫痫患者脑PET图像的应用研究

Objective To investigate the value of statistical parametric mapping 5 (SPM5) and its parameter settings in analysis of PET imaging for epilepsy patients. Methods Seventeen epilepsy patients and seventeen controls were scanned with PET. The datns were analyzed using PET and SPM5 with qualitative and semiquantitative analysis, statistical analysis of the percentage (numbers of agent distribution decreasing in focus to brain) for different parameters combinations, which were value adjustment to contral-p and voxels-k. Results There was decreasing of agent distribution at temporal lobe in epilepsy patients detecting with PET; the T/NT of focus to cerebellum was 1.07±0.24, the T/NT of normal tissue in opposite side to cerebellum was 1.27±0.18, there was a significant difference (t=1.87, P<0.05). Dealing with SPM5, there was more significant decreasing of agent in regions 19, 21, 39 of temporal lobe, regions 7, 19, 31, 40, 47 of parietal lobe and occipital lobe in epilepsy patients. With different value of k, the percentage was (27±22)%, (29±24)%, (32±23)%, (35±27)%, (39±31)%respectively, there was not significant difference (F=0.59, P>0.05) ; for different value of p, the percentage was (42±30) %, (29±25) %, (26±21) % respectively, with a significant difference (F=3.60, P<0.05); there was linear regression in value adjustment to contral-p and the percentage(b=-18.24, t=2.57, P<0.05). Conclusions Semiquantitative analysis by SPM5, the setting of value adjustment to contral-p would affect the results, the smaller of value adjustment to contral-p, the better of the result. SPM5 would be more objective and accurate to locate the focuses.