cN0喉癌前哨淋巴结的检测及意义

目的 应用核素法、染料法以及二者联合法检测cN0喉癌患者前哨淋巴结(SLN),并评价SLN对颈部淋巴结转移状况的预测价值.方法 41例cN0喉癌患者采用核素法、染料法和联合法示踪SLN.核素法为手术前于喉镜引导下在肿瘤周围注射99TCm-硫胶体(SC)进行SLN显像,手术中用γ探针探测放射性"热点";染料法为手术中注射亚甲蓝,示踪蓝染的SIN;联合法为将核素法和染料法联合应用的方法.结果 核素法、染料法和联合法对SLN的检出率分别为87.8%、70.7%和92.7%(P<0.01);核素法与联合法、染料法与联合法检出SIN数目的 差异有统计学意义(P<0.05,P<0.01),核素法与染料法检出SLN数目的 差异无统计学意义(P>0.05).病理结果示,有9例患者淋巴结转移,占22.0%.联合法检测SLN的灵敏度、准确度和阴性预测值分别为88.9%、97.4%和96.7%.结论 联合应用核素法和染料法可提高SEN检出的准确性,SLN的病理结果可以准确预测cN0喉癌患者颈部淋巴结的病理状态.     

The role of 131Ⅰ in the apoptosis of thyrocytes of patient with Graves' disease

The changes of Fas.FasL and Bcl-2 expression in thyrocytes of patients with Graves'disease were investigated before and 2 weeks after 131Ⅰ administration. The results showed that 131Ⅰ couhl induce thyrocytes to express the apoptotic protein Fas, FasL and the anti-apoptotic protein Bet-2 in patients with Graves'disease. A statistically significant correlation was found between the dose of 131Ⅰ and the expression levels of Fas and FasL but not Bet-2 ,suggesting that early onset of hypothyroid after 131Ⅰ administration may be due to the increased expression of Fas and FasL in thyrocytes.     

99Tcm-二亚乙基三胺五乙酸与99Tcm-奥曲肽眼眶显像在甲状腺相关性眼病中的对比研究

Objective Through a comparative study of 99Tcm-diethylenetriaminepentaacetic acid (99Tcm-DTPA) and 99Tcm-octreotide (99Tcm-OCT) SPECT orbital scan, evaluated the clinic significance of two imaging of estimation activity in thyroid associated ophthalmopathy (TAO). Methods Aeording to the elinnic activity score (CAS), 26 TAO patients were divided into two groups: active group (CAS ≥3) and inactive group (CAS<3), 14 volunteers (control group) participates this study. Orbit scan were completed after intravenously injection with 99Tcm-DTPA 740 MBq and 99Tcm-OCT (every other day). Obtaining the uptake ratio (UR) of two kinds of orbit scans. The statistical analyses included Paired-samples t test analysis of variance and Spearman regression analysis. Results There is no statistically significance between the two methods in UR (t=0.075, P>0.05). There is a statistically significant correlation was found between CAS and the uptake ratios(99Tcm-DTPA: r=0.835, P<0.001; 99Tcm-OCT: r=0.912, P<0.001). Conclusions There is a good uniformity between 99Tcm-DTPA and 99Tcm-OCT orbital scan; 99Tcm-DTPA is a feasible and maybe a new promising estimation method of activity in the patients with TAO.     

^18F-FDG PET/CT显像与心脏磁共振成像对Beagle犬局部辐射后心脏损伤的诊断

目的探讨^18F-脱氧葡萄糖(FDG)PET/CT显像与心脏磁共振成像(CMR)对Beagle犬局部放射性心脏损伤(RIHD)的诊断价值。方法将24只1岁龄健康雄性Beagle犬按照随机数字表法分为对照组及照射后3、6和12个月组,每组各6只;其中各照射组左心室前壁行单次20 Gy调强放疗。对全部犬行^18F-FDG PET/CT心肌代谢显像和CMR检查,计算^18F-FDG摄取增高区平均标准摄取值(SUVmean)及面积。全部检查结束后1周处死实验犬,取心脏进行Masson染色及电子显微镜检查。采用单因素方差分析比较组间差异。结果对照组心肌^18F-FDG几乎不摄取,照射后3个月即可见犬心肌^18F-FDG摄取增加,照射后3、6和12个月组的心肌SUVmean分别为5.90±1.31、4.66±2.21和3.21±0.82,与对照组(1.13±0.21)的差异有统计学意义(F=11.81,P<0.05);照射组^18F-FDG摄取增高面积随着照射后时间延长逐渐下降(F=195.74,P<0.01)。CMR示照射后6和12个月组的心肌灌注降低、进行性纤维化加重;与对照组相比,照射后6和12个月组的舒张末期容积(EDV)和收缩末期容积(ESV)增加(F=15.479和16.908,均P<0.01),而左心室射血分数(LVEF)下降(F=63.715,P<0.01)。Masson染色发现照射后心肌纤维化进行性加重;电子显微镜检查示照射后心肌线粒体变性肿胀,线粒体数量进行性减少。结论照射后局部心肌^18F-FDG摄取增高对于RIHD的危险性有预测价值,^18F-FDG PET/CT显像能早于CMR发现RIHD。     

肺灌注显像定量测定先心病伴肺动脉高压肺血流变化

肺灌注显像定量测定先心病伴肺动脉高压肺血流变化李思进刘秀杰余坚芳史蓉芳潘世伟刘蕴忠吴清文陈文琦刘华平先天性心脏病（ＣＨＤ）伴肺动脉高压（ＰＨ）患者其肺血管病变的严重程度直接影响手术效果及预后。目前对肺血管病变程度的判断多为创伤性，不易被患者接受。本研...     

门电路心肌显像傅立叶分析评价左心功能

用９９ｍＴｃ－甲氧基异丁基异腈（ＭＩＢＩ）对２０例患者及６例健康志愿者进行门控心肌显像和傅立叶分析，同时进行平衡法核素心室显像．将２０例患者的左室心肌分为１０６个节段，两种显像（门控心肌和心血池）振幅之间有９１个节段相符（８５．８％），所测得的左室射血分数（ＬＶＥＦ）平均值分别为４２．３％±１０．４％和４４．０％±１５．９％（Ｐ＞０，０５）；６例正常人两种显像振幅完全相符，ＬＶＥＦ平均值分别为５８．８％±１０．２％和６４．０％±１１．０％（Ｐ＞０．０５）；正常人与患者间用相同方法所测得的ＬＶＥＦ间有显著差异（Ｐ＜０．０１）．所有２６例受检者两种方法所测得的ＬＶＥＦ值之间有良好的相关性（ｒ＝０．９４，Ｐ＜０．００１）本研究结果表明，９９ｍＴｃ－ＭＩＢＩ门控心肌显像可同时获得心肌血流灌注和左心功能的信息．     

存活心肌对冠心病患者预后的影响

存活心肌 (ｖｉａｂｌｅｍｙｏｃａｒｄｉｕｍ ,ＶＭ )是影响心肌梗死患者预后的重要因素 ,并可为进一步治疗的选择提供指导。本文采用硝酸甘油介入99ｍＴｃ ＭＩＢＩ心肌灌注断层显像 (ＳＰＥＣＴ)对 86例冠心病患者行存活心肌检测 ,探讨其对患者预后的影响。1　资料与方法1 1　临床资料 :病例选自我院 1999年 9月至 2 0 0 0年 12月86例心肌梗死患者。所有病人均行静息心肌断层显像和硝酸甘油介入心肌显像。分为两组 ,第 1组 40例 ,进行了血管重建术 ,其中经皮腔内冠状动脉成形术 2 2例 ,冠状动脉搭桥术 18例 ;第 2组 44例 ,为非手术组 ,进…     

99Tcm-二亚乙基三胺五乙酸与99Tcm-奥曲肽眼眶显像在甲状腺相关性眼病中的对比研究

Objective Through a comparative study of 99Tcm-diethylenetriaminepentaacetic acid (99Tcm-DTPA) and 99Tcm-octreotide (99Tcm-OCT) SPECT orbital scan, evaluated the clinic significance of two imaging of estimation activity in thyroid associated ophthalmopathy (TAO). Methods Aeording to the elinnic activity score (CAS), 26 TAO patients were divided into two groups: active group (CAS ≥3) and inactive group (CAS<3), 14 volunteers (control group) participates this study. Orbit scan were completed after intravenously injection with 99Tcm-DTPA 740 MBq and 99Tcm-OCT (every other day). Obtaining the uptake ratio (UR) of two kinds of orbit scans. The statistical analyses included Paired-samples t test analysis of variance and Spearman regression analysis. Results There is no statistically significance between the two methods in UR (t=0.075, P>0.05). There is a statistically significant correlation was found between CAS and the uptake ratios(99Tcm-DTPA: r=0.835, P<0.001; 99Tcm-OCT: r=0.912, P<0.001). Conclusions There is a good uniformity between 99Tcm-DTPA and 99Tcm-OCT orbital scan; 99Tcm-DTPA is a feasible and maybe a new promising estimation method of activity in the patients with TAO.     

99mTcO4-和99mTc-MIBI核素显像对甲状腺结节良恶性的鉴别诊断

目的　探讨99mTcO-4和99mTc MIBI核素显像对甲状腺结节良恶病变鉴别诊断价值。方法　使用ElscintApex SP4SPECT仪对 81例甲状腺结节患者 ,进行99mTcO-4和99mTc MIBI核素显像 ,并根据甲状腺结节放射性摄取能力进行打分 (1～ 4分 )。结果　根据甲状腺结节摄取99mTcO-4和99mTc MIBI两种核素情况分为两组 ,相匹配组 :结节性甲状腺肿 (13例 )为 (2 .0± 1.2 4 ) / (2 .2± 1.2 3) ;腺瘤伴囊变 (34例 )为 (1.2± 0 .38) / (1.3± 0 .5 3) ;毒性腺瘤 (11例 )为 (4 .0± 0 .0 0 ) / (3.9± 0 .2 9)。不匹配组 :甲状腺癌 (12 )为 (1.2± 0 .37) / (2 .9± 0 .6 9) ;甲状腺炎性结节 (11例 )为 (1.2± 0 .39) / (2 .0± 0 .85 )。结论　甲状腺99mTcO-4和99mTc MIBI两种方法联合显像对鉴别甲状腺结节良恶病变具有较高的临床应用价值。值得进一步研究推广。     

99Tcm-二亚乙基三胺五乙酸与99Tcm-奥曲肽眼眶显像在甲状腺相关性眼病中的对比研究

Objective Through a comparative study of 99Tcm-diethylenetriaminepentaacetic acid (99Tcm-DTPA) and 99Tcm-octreotide (99Tcm-OCT) SPECT orbital scan, evaluated the clinic significance of two imaging of estimation activity in thyroid associated ophthalmopathy (TAO). Methods Aeording to the elinnic activity score (CAS), 26 TAO patients were divided into two groups: active group (CAS ≥3) and inactive group (CAS<3), 14 volunteers (control group) participates this study. Orbit scan were completed after intravenously injection with 99Tcm-DTPA 740 MBq and 99Tcm-OCT (every other day). Obtaining the uptake ratio (UR) of two kinds of orbit scans. The statistical analyses included Paired-samples t test analysis of variance and Spearman regression analysis. Results There is no statistically significance between the two methods in UR (t=0.075, P>0.05). There is a statistically significant correlation was found between CAS and the uptake ratios(99Tcm-DTPA: r=0.835, P<0.001; 99Tcm-OCT: r=0.912, P<0.001). Conclusions There is a good uniformity between 99Tcm-DTPA and 99Tcm-OCT orbital scan; 99Tcm-DTPA is a feasible and maybe a new promising estimation method of activity in the patients with TAO.