潘生丁~(99)Tc-MIBI心肌灌注断层显像阳性患者的冠脉造影对比

目的：通过对８２例潘生丁９９Ｔｃ－ＭＩＢＩ心肌灌注单光子发射计算机断层显像（ＳＰＥＣＴ）阳性患者的冠状动脉造影（ＣＡＧ）比较，了解ＳＰＥＣＴ对具体病变血管检出的特异性和阳性预测值。方法：对１９９５年６月～１９９８年５月疑诊冠心病患者行ＳＰＥＣＴ后，作ＣＡＧ８２例进行对比分析，按照ＳＰＥＣＴ分区与ＣＡＧ所显示血管的关系进行同组自身对照。结果：ＣＡＧ显示冠脉病变：左前降支５０支，回旋支３２支，右冠脉４８支。ＳＰＥＣＴ缺血分区所代表的冠脉病变：左前降支：５９支，回旋支：４１支，右冠脉：５３支。分析显示左前降支（ＬＡＤ）、回旋支（ＬＣＸ）、右冠脉（ＲＣＡ）被检出的敏感性均为１００％，特异性分别为：７８％、８５％、８７％，阳性预测值分别为：８５％、７８％、９１％。结论：潘生丁９９Ｔｃ－ＭＩＢＩ心肌灌注单光子发射计算机断层显像对冠状动脉粥样硬化性心脏病（冠心病）具体病变血管的定位诊断也能提供可靠的信息。可作为进行介入治疗和判断介入治疗后心肌血运情况的重要依据之一。     

^99mTc—MIBI心肌灌注显像与冠状动脉造影在冠心病诊断中的价值对比

目的：探讨＾９９ｍＴｃ－ＭＩＢＩ心肌灌注断层显像对冠心病的诊断价值。方法：以双盲法对１８９例＾９９ｍＴｃ－甲氧异丁异腈（ＭＩＢＩ）心肌灌注断层显像（ＳＰＥＣＴ）与冠状动脉造影（ＣＡＧ）的结果行对比分析。结果：＾９９ｍＴｃ－ＭＩＢＩ心肌ＳＰＥＣＴ对冠心病诊断敏感性为９０．８％，特异性为８５％，对左前降支（ＬＡＤ）、左回旋支（ＬＣＸ）、右冠状动脉（ＲＣＡ）的诊断阳性率分别为８７％、７０．２％、８６．８     

三种冠心病检查方法的临床比较

目的：分析冠脉造影、心电图踏车运动试验以及门控心肌灌注断层显像诊断冠心病的情况。方法：分别对59例患者行冠脉造影、心电图踏车运动试验及门控心肌灌注断层显像检查。结果：冠脉造影结果仅1例与临床不符，心电图踏车运动试验诊断冠心病的灵敏度及特异度分别为45．2％和82．1％，门控心肌灌注断层显像诊断冠心病的灵敏度及特异度分别为83．9％和39、3％。结论：冠脉造影对冠心病有极高的诊断价值，目前仍是不可取代的冠心病诊断方法．但仍有不足之处，门控心肌断层显像对冠心痛有较高的诊断价值，可以和冠状动脉造影检查结果互为补充．灵敏度较好，但特异性不太高，阳性须结合临床考虑。心电图踏车运动试验诊断冠心病的特异性较高，联合门控心肌断层显像结果进行判断可使诊断冠心病的灵敏度进一步提高。     

负荷心肌灌注显像在女性冠状动脉心脏病诊断中的应用价值

目的评价负荷心肌灌注显像对女性冠状动脉心脏病（冠心病）的诊断价值。方法回顾分析了259例在北京阜外心血管病医院同时进行了负荷心肌灌注显像和冠状动脉造影的女性患者（间隔时间〈60d）,平均年龄（60±8）岁。其中227例进行了运动试验心肌灌注显像,32例进行了药物负荷心肌灌注显像。结果以冠状动脉管径狭窄≥50％为诊断标准,在接受运动试验心肌灌注显像检查的227例患者中,79例冠状动脉造影显示明显的冠状动脉狭窄病变,其中单支病变33例,双支病变23例,3支病变23例。累及左冠状动脉前降支67支,左冠状动脉回旋支41支,右冠状动脉40支,左主干8支。运动试验心肌灌注显像诊断女性冠心病的灵敏度为63％,特异性为97％,准确性为85％。诊断单支、双支和3支冠状动脉病变患者的灵敏度分别为61％,52％和78％。按运动试验是否达到终止指标,将227例患者分为2组,即运动试验达到终止指标组（n=137）和运动试验未达到终止指标组（n=90）。在运动试验达到终止指标组,运动试验心肌灌注显像诊断女性冠心病的灵敏度为86％。而在运动试验未达终止指标组,诊断灵敏度则为38％。在接受药物负荷心肌灌注显像检查的32例患者中,13例冠状动脉造影显示明显的冠状动脉狭窄病变。药物负荷心肌灌注显像诊断女性冠心病的灵敏度为85％,特异性为84％,准确性为84％。结论负荷心肌灌注显像可以有效诊断女性冠心病,且药物负荷心肌灌注显像更适合于运动耐力受损的老年女性患者。     

经皮冠状动脉腔内成形术82例报告

对８２例冠心病患者行经皮冠状动脉腔内成形术（ＰＴＣＡ），共扩张血管９６支及病变１０６处，总成功率为９５％。术后追踪平均８个月，临床有效率８７％，潘生丁核（９９ｍＴＣ）心肌灌注断层显像追踪有效率８５％，３例冠脉造影证实再狭窄，２例再次ＰＴＣＡ成功。     

经皮冠状动脉腔内成形术82例报告

对８２例冠心病患者行经皮冠状动脉腔内成形术（ＰＴＣＡ），共扩张血管９６支及病变１０６处，总成功率为９５％。术后追踪平均８个月，临床有效率８７％，潘生丁核（９９ｍＴＣ）心肌灌注断层显像追踪有效率８５％，３例冠脉造影证实再狭窄，２例再次ＰＴＣＡ成功。     

潘生丁核素心肌断层对冠心病的诊断价值研究

研究了潘生丁心肌断层在诊断冠心病中的作用及安全性。分析了６２例病人的冠状动脉造影及心肌断层的结果。３７例冠造证实病例（５０％６以上狭窄）心肌断层检出的敏感性为８９％、特异性为９２％。对单、双及三支病变检出的敏感性分别为７６％、１００％、１００％；对具体受累血管检出的敏感性分别为前降支７３％，回旋支８０％，右冠８０％。试验无严重副作用。     

~（99m）Tc—MIBI心肌灌注断层显像临床应用

本文应用放射性核素心肌灌注断层显像方法检测冠心病（ＣＨＤ）和心肌梗塞（ＭＩ）患者３６８例．并与心电图（ＥＣＧ）进行对比分析。结果表明，核素心肌灌注断层显像对缺血性心脏病检出率９１．３％，明显高于ＥＣＧ（６６．８％）。运动和静息核素心肌断层显像对比证明，运动试验可提高检出灵敏度和特异性。     

潘生丁核素心肌断层对冠心病的诊断价值研究

研究了潘生丁心肌断层在诊断冠心病中的作用及安全性。分析了６２例病人的冠状动脉造影及心肌断层的结果。３７例冠造证实病例（５０％以上狭窄）心肌断层检出的敏感性为８９％、特异性为９２％。对单、双及三支病变检出的敏感性分别为７６％、１００％、１００％；对具体受累血管检出的敏感性分别为前降支７３％，回旋支８０％，右冠８０％。试验无严重副作用。     

心肌灌注/代谢显像与门控心肌灌注显像在CABG术前的应用

目的采用一日法静息^99mTc-MIBI及^18F-FDG双核素同时采集（DISA）心肌灌注／代谢显像与门控心肌灌注显像，评价冠心病患者冠状动脉搭桥术（CABG）前心肌灌注、存活和心功能状况，并探讨CEqual心肌灌注定量分析软件的临床应用价值。方技42例临床诊断为冠心病拟行CABG的患者，进行^99mTc-MIBI和^18F-FDG DISA灌注／代谢显像及门控心肌灌注显像。结果1．42例DISA显像中，39例为灌注／代谢不匹配型，提示心肌存活，适合进行CABG；1例为灌注／代谢匹配型，提示心肌梗死，无存活心肌；2例正常。2．CEqual心肌灌注定量分析软件对左心心肌总的灌注缺损区定位的灵敏度、特异性分别为90％及67％。对冠状动脉左前降支、左回旋支及右冠状动脉供血区域的定位灵敏度、特异性分别为100％、79％、77％及50％、75％、60％。结论一日法DISA心肌灌注／代谢显像与门控法心肌灌注显像，可全面评价冠心病患者的心肌灌注、存活及心功能状况，可用来作为选择CABG适应证患者的重要手段。     

Clinical evaluation of 99mTc-MIBI myocardial tomography for detecting coronary artery disease.

To evaluate the clinical efficacy of 99mTc-MIBI myocardial tomography for detecting coronary artery disease, 34 consecutive patients who underwent both 99mTc-MIBI study and coronary arteriography were included in the present study. Ten without and 24 with significant coronary artery disease were documented by coronary arteriography. The overall sensitivity and specificity of 99mTc-MIBI study for detecting coronary artery disease were 91.8% (22/24) and 80.0% (8/10), respectively. In subset studies, 16 of 17 (94.1%) patients with previous myocardial infarction and 6 of 7 (85.7%) patients with significant CAD but without MI were identified as abnormal. Reversible perfusion abnormalities were shown in 4 of 5 patients undergoing both exercise and rest studies. Rest perfusion abnormalities were shown in 2 patients with unstable angina pectoris who underwent only rest study. In conclusion, 99mTc-MIBI myocardial tomography provides a reliable method for detecting coronary artery disease. Rest study has high sensitivity for identifying patients with MI, and exercise/rest study can identify patients with significant CAD but without MI.     

冠状动脉疾病危险因素与^201TI心肌灌注显像的相关性研究

OBJECTIVE: To investigate the relation of 5 major risk factors (hypertension, diabetes, hyperlipidemia, overweight, smoking) of coronary artery disease (CAD) to the findings from thallium-201 single photon emission computed tomography. METHODS: Exercise 201TI myocardial scintigraphy was performed in 346 patients with clinically suspected CAD, who were divided into no risk, low risk, moderate risk, and high risk groups, based on CAD risk scores. RESULTS: The rate of thallium-201 perfusion abnormalities in no risk, low risk, moderate risk, and high risk groups were 48.1%, 70.6%, 89% and 100%, respectively, showing significant difference between them (X2=49.6, P=0.000 1). In patients with CAD risk factors, significant relation was found between the risk scores and semiquantitative scores, lung-to-heart ratios or segment abnormalities (0.133 r 0.450, 0.000 1 P 0.031). CONCLUSION: A close relation between CAD risk factors and thallium-201 myocardial scintigraphy is found. Routine thallium-201 myocardial scintigraphy should be performed in patients clinically suspected of coronary artery disease with CAD risk factors, especially those with moderate to high risk factors.     

Technetium-99m-Sestamibi SPECT myocardial perfusion imaging in patients with complete left bundle branch block

BACKGROUND: Diagnosis of coronary artery disease (CAD) in patients with left bundle branch block (LBBB) is considered a challenge in cardiology due to low accuracy of noninvasive methods such as basal and exercise stress test. Recently, myocardial perfusion imaging showed attainment of higher sensitivity and specificity. Scintigraphy with thallium-201 has been widely used in these patients. Few have used technetium-99m-Sestamibi and single photon emission computed tomography (SPECT). The aim of the study was to assess the diagnostic value of Tc-99m Sestamibi SPECT myocardial perfusion imaging in patients with complete LBBB. METHODS: We studied 57 consecutive patients with complete LBBB using Tc-99m-Sestamibi SPECT and treadmill or dipyridamole stress to evaluate CAD. Eighteen patients also underwent coronary angiography. Perfusion defects were classified as fixed or reversible. RESULTS: Prevalence of resting perfusion abnormalities in anterior, septal, and apical regions was 51, 56, and 19%, respectively. Sensitivity for detecting >50% left anterior descending artery (LAD) stenosis was 67 and 56% for anterior or septal defects, and 56% for specificity. Apical perfusion abnormality showed 21% sensitivity and 89% specificity. Among six patients with reversibility and who underwent coronary angiography, all had >50% LAD stenosis. CONCLUSIONS: With Tc-99m-MIBI SPECT imaging, prevalence of anteroseptal perfusion abnormalities was >50% in patients with LBBB. The test has moderate sensitivity and specificity for LAD disease. Absence of apical defect is specific for excluding LAD disease. Reversible changes in anteroseptal wall should be considered as an indicator of ischemia in this territory.     

核素心肌灌注断层显像检查与冠状动脉造影术对冠心病的诊断价值

[目的 ]评价99mTc甲氧基异丁基异腈心肌灌注断层显像检查诊断冠心病的准确性 ,并对心肌灌注断层显像检查与冠状动脉造影术所显示的心肌损害程度间的关系进行分析 .[方法 ]对 10 3例冠心病患者行99m Tc 甲氧基异丁基异腈心肌灌注断层显像检查和冠状动脉造影检查 ,对其结果进行对比分析 .[结果 ]冠状动脉造影术对冠心病的诊断阳性率为 96 % ,假阴性有 3例 ;心肌灌注断层显像检查对冠心病诊断的敏感性较高 ,为 94 % ,特异性较低 ,为72 % .心肌灌注断层显像检查对单支病变血管的检出灵敏度高于双支病变及 3支病变 .心肌灌注断层显像检查对前降支的检出灵敏度为 86 % ,左旋支为 6 2 % ,右冠状动脉为 82 % .心肌灌注断层显像检查与冠状动脉造影检查的结果之间存在明显差异 .[结论 ]冠状动脉造影检查可了解冠状动脉血管树的解剖 ,心肌灌注断层显像检查则从病理生理学角度提供心肌灌注和存活状况的信息 ,两者不能相互替代 ,结合此 2种检查可使冠心病诊断的准确性得到进一步的提高     

99mTc-N-NOET运动心肌灌注显像诊断冠状动脉疾病

目的 探讨^99mTc-N-NOET( NOET) 运动肺/心比值对冠状动脉疾病(CAD)多支病变的诊断价值及其与左室舒张功能的相关性。方法 对49例经冠状动脉造影病人进行NOET运动-延迟心肌灌注断层显像,其中29例经冠状动脉造影证实动脉狭窄≥50%,20例冠状动脉正常。结果 NOET运动心肌灌注断层显像对CAD的诊断敏感性和特异性分别为86.2%和95.0%。多支病变组(0.76±0.13)NOET运动肺/心比值显著高于单支病变(0.62±0.06)和冠脉正常组(0.58±0.13)(F=18.04,P=0.002-0.001)。当NOET运动肺/心比值≥0.70时,其对冠脉多支病变的诊断敏感性和特异性分别为93.5%和83.3%。NOET运动肺/心比值与E/A比值具有非常显著的负相关性(r=-0.771, P<0.000 1)。结论 NOET运动肺/心比值对CAD病人的多支病变和左室舒张功能异常均具有诊断价值。     

二维超声心动图,心电图与冠状动脉造影在冠心病诊断中的对照分析

通过对１８１例拟诊冠心病患者的二维超声心动图（２－ＤＥ）、心电图（ＥＣＧ）及冠状动脉造影结果的对照分析，评价２－ＤＥ、ＥＣＧ对冠心病的诊断价值。结果示：２－ＤＥ及ＥＣＧ诊断敏感性分别为７０．１％和５９．８％（Ｐ＞０．０５），特异性为９４．６％和７５．７％（Ｐ＜０．０５）；冠脉狭窄＜７５％时敏感性分别为２８．９％和３６．８％（Ｐ＞０．０５），狭窄≥７５％时则为９２．８％和７２．４％（Ｐ＜０．０５）；对陈旧心肌梗塞患者的诊断敏感性二者均为１００％。２－ＤＥ检出病变部位，范围较ＥＣＧ所示更特异。更符合责任冠脉供血区。     

^99mTc-N-NOET运动心肌灌注显像诊断冠状动脉疾病

OBJECTIVE: To investigate the value of (99m)Tc-N-NOET(NOET) myocardial perfusion imaging during exercise in the diagnosis of coronary artery disease (CAD), and the relationship between exercise NOET lung/heart ratio and left ventricular diastolic function. METHODS: Exercise-delayed NOET myocardial perfusion imaging was performed in 49 patients undergoing coronary angiography, among whom 29 had coronary stenosis>or=50% and 20 normal coronary artery. RESULTS: The sensitivity and specificity of exercise NOET myocardial perfusion imaging were 86.2% and 95.0%, respectively, in the detection of CAD. The NOET lung/heart ratio of CAD patients with multiple branch involvement (0.76+/-0.13) was significantly higher than those of patients with single branch lesion (0.62+/-0.06) and with normal coronary artery (0.58+/-0.13, F=18.04, P=0.002- 0.001). When the lung/heart ratio was over 0.70, the sensitivity and specificity of the imaging for detecting the presence of multiple branch involvement were 93.5% and 83.3%, respectively. NOET lung/heart ratio showed a significant correlation with E/A ratio (r=-0.771, P<0.000 1). CONCLUSION: Exercise NOET lung/heart ratios has diagnostic values for multiple branch lesions and left ventricular diastolic function abnormalities in patients with CAD.     

CT冠状动脉造影与腺苷负荷心肌灌注显像诊断冠心病的对比研究

目的 以传统冠状动脉造影(CAG)结果为参照,对比CT冠状动脉造影(CTCA)与腺苷负荷心肌灌注显像(MPI)诊断冠心病的准确性,并探讨两者间的关系.方法 56例怀疑或诊断为冠心病的患者,3周内接受CTCA、腺苷负荷MPI及CAG检查,CTCA将患者分为无冠脉病变组、非阻塞性冠脉病变组(冠脉狭窄<70%)及阻塞性冠脉病变组(冠脉狭窄≥70%),分别对比评价两种无创检测冠心病方法 的特点.结果 CTCA发现5例无冠状动脉粥样硬化,19例非阻塞性冠脉病变,32例阻塞性冠脉病变.腺苷负荷MPI提示26例未见异常,18例显示不可逆性的心肌灌注缺损,29例可逆性心肌灌注缺损.以CAG为对照,CTCA检测冠心病的敏感性为100%,特异性为55.6%,阳性预测值为92.2%,阴性预测值为100%;而腺苷负荷MPI检测冠脉病变≥70%的病变,敏感性为78.6%,特异性为71.4%,阳性预测值为73.3%,阴性预测值为76.9%.结论 CTCA与腺苷负荷MPI分别从动脉粥样硬化的形态学与心肌缺血的功能学方面给冠心病的诊断提供了较准确的信息,两者相辅相成,是无创的、全面的诊断冠心病的有力工具.     

冠状动脉双源CT在评价冠心病中危人群冠状动脉狭窄中的可靠性及价值

目的探讨DSCT评价冠心病中危人群冠状动脉狭窄的准确性。方法37例选自2006年7月～2007年7月因各种原因至我院行冠状动脉造影的冠心病中危患者,分别予DSCT和冠脉造影检查（不予心率控制）。双盲法对图像资料结果进行比较分析。结果在37例患者中,有36例获得了清晰的图像。在15例至少有1处〉50%狭窄的患者中,14例由DSCT准确发现,敏感性93%。在22例无1处〉50%狭窄的患者中,20例由DSCT准确排除（特异性91%,阳性预测值73%）。回归分析发现DSCT与冠脉造影的相关性极大（r=0.75,P〈0.001）,但DSCT可轻度高估狭窄程度。结论DSCT判断冠心病中危人群冠脉狭窄情况的敏感性及特异性均较高,可作为此人群筛查的安全、可靠方法。