99mTc-MIBI心肌灌注显像与冠状动脉造影诊断冠心病的对比分析

目的：探讨99mTc-MIBI心肌灌注显像对冠心病的临床诊断价值。方法：128例住院患者，男76例，女52例。年龄30～85（56.5±12.5）岁。同时进行99mTc-MIBI心肌灌注显像与冠状动脉造影（CAG）检查，将结果进行相关性分析。对上述患者预后进行了抽样临床随访。结果：99mTc-MIBI心肌灌注显像与CAG均阳性65例，99mTc-MIBI心肌灌注显像阳性、CAG阴性32例，99mTc-MIBI心肌灌注显像阴性、CAG阳性22例，99mTc-MIBI心肌灌注显像与CAG均阴性9例。一种检查阳性和99mTc-MIBI心肌灌注显像与CAG均阴性预后良好。99mTc-MIBI心肌灌注显像与CAG均阳性，CAG证实主要冠状动脉狭窄≥75％预后较差。结论：99mTc-MIBI心肌灌注显像与CAG相辅相成，对冠心病患者的诊断、指导治疗决策和判断预后有重要临床意义。     

腺苷负荷心肌核素显像在诊断冠心病中的应用

目的:探讨腺苷负荷心肌核素显像对冠心病的诊断价值。方法:94例拟诊冠心病患者均行冠状动脉造影,腺苷负荷99mTc-MIBI心肌灌注显像、静息心肌显像检查,比较腺苷负荷心肌核素显像与冠状动脉造影结果。结果:冠状动脉造影检查阳性62例中,腺苷负荷心肌核素显像阳性50例。32例冠状动脉造影示无明显狭窄者中,腺苷负荷心肌核素显像阴性24例。腺苷负荷心肌核素显像诊断冠心病的敏感性和特异性分别为80.6%和75.0%。2,3支病变血管腺苷负荷心肌核素显像阳性率高于单支血管病变(P<0.05)。结论:腺苷负荷心肌核素显像诊断冠心病敏感性、特异性较高。     

硝酸甘油介入99mTc-MIBI心肌灌注显像诊断冠心病及估测心肌存活性的价值

目的:评价硝酸甘油介入99mTc-MIBI心肌灌注显像(SPECT)诊断冠心病及估测心肌存活性的价值.方法:48例可疑冠心病患者,于冠状动脉造影(CAG)术前1周内行静息、硝酸甘油介入99mTc-MIBI心肌SPECT检查,以CAG为金标准,观察硝酸甘油介入99mTc-MIBI心肌SPECT诊断冠心病的准确性.对于25例成功行经皮冠脉介入治疗(PCI)的冠心病患者,以PCI术后3个月室壁运动改善为检验标准,评价硝酸甘油介入99Tc-MIBI心肌SPECT检测存活心肌的应用价值.结果:硝酸甘油介入99mTc-MIBI心肌SPECT诊断冠心病的敏感性、特异性、准确性分别为83.9%、76.5%、81.3%,评价存活心肌的敏感性为91.8%,准确性为84.9%.结论:硝酸甘油介入99mTc-MIBI心肌SPECT在诊断冠心病及估测心肌存活性有较高的临床应用价值.     

腺苷负荷心肌核素显像在诊断冠心病中的应用

目的:探讨腺苷负荷心肌核素显像对冠心痛的诊断价值.方法:94例拟诊冠心痛患者均行冠状动脉造影,腺苷负荷99mTc-MIBI心肌灌注显像、静息心肌显像检查,比较腺苷负荷心肌核素显像与冠状动脉造影结果.结果:冠状动脉造影检查阳性62例中,腺苷负荷心肌核素显像阳性50例.32例冠状动脉造影示无明显狭窄者中,腺苷负荷心肌核素显像阴性24例.腺苷负荷心肌核素显像诊断冠心病的敏感性和特异性分别为80.6%和75.O%.2,3支病变血管腺苷负荷心肌核素显像阳性率高于单支血管病变(P<0.05).结论:腺苷负荷心肌核素显像诊断冠心痛敏感性、特异性较高.     

99Tcm-N-NOET与99Tcm-MIBI心肌显像的对比研究

目的评价 99Tcm-N-NOET{双[N-乙氧基,N-乙基(二硫代氨基甲酸脂)氮化锝](Ⅴ)}静息心肌血流灌注显像诊断冠心病(CAD)的临床价值.方法可疑冠心病的74例男性、12例女性(平均年龄 55.6±11.5岁)行门控静息心肌血流灌注显像和冠脉造影(将冠脉管腔狭窄≥50%定为病变血管),其中行 99Tcm-N-NOET静息心肌显像44例(平均年龄55.9±11.6岁),行 99Tcm-MIBI静息心肌显像42例(平均年龄55.4±11.5岁).前者于注药后1h显像,后者于注药后1～1.5h显像.结果 99Tcm-N-NOET和 99Tcm-MIBI诊断冠心病的灵敏度分别为71.4%和64.7%(P＞0.05),特异性分别为 88.9%和87.3%(P＞0.05),两组间灵敏度和特异性均无显著性差异.结论 99Tcm-N-NOET与 99Tcm-MIBI静息心肌血流灌注显像对诊断冠心病具有一致性.     

高血压病胸痛27例核素心肌灌注显像分析

目的评估高血压病胸痛患者核素心肌灌注显像临床诊断中的价值。方法对27例高血压病胸痛患者进行99m锝-甲氧基异丁基异晴(99mTc-MIBI)心肌灌注显像、心电图检查及冠状动脉造影。结果心肌灌注显像、心电图及冠状动脉造影对高血压病胸痛患者的检查的阳性率分别为66.7%、59.2%、0%。心肌灌注显像、心电图检查两者阳性率间差异无统计学意义(P>0.05)。结论 99mTc-MIBI心肌灌注显像对高血压诊断、治疗和预后判断是一种安全、无创伤、方便的检查方法。     

门控心肌灌注显像诊断冠心病的临床价值

目的:探讨腺苷负荷99mTc-MIBI门控心肌灌注显像(G-MPI)后室壁运动和增厚率异常对冠心病的诊断价值。方法:对91例确诊或临床疑诊为冠心病患者行静息-腺苷负荷99mTc-MIBI G-MPI和非门控心肌灌注显像(MPI),两周内行冠状动脉造影(CAG),对其结果进行对比分析。结果:MPI诊断冠心病的灵敏度为85.3%,特异性为73.9%,G-MPI诊断冠心病灵敏度为92.6%,特异性为87.0%,结合腺苷负荷后局部室壁运动和增厚率评分可提高G-MPI诊断冠心病的灵敏度和特异性。结论:静息-腺苷负荷99mTc-MIBI G-MPI对冠心病的诊断有较高的灵敏度和特异性。     

冠脉造影与门控心肌断层显像结果差异分析

目的：对冠脉造影与门控心肌断层心肌显像检查结果不一致情况及影响因素进行分析。方法：对59例胸痛患者行冠脉造影及核素心肌灌注显像，并对结果不匹配者进行分析。结果：59例患者中，冠脉造影、核素心肌灌注显像结果不匹配者22例，其中男性16例，女性6例。门控心肌断层显像显示有心肌缺血而冠脉造影显示无明显冠状动脉病变患者有17例，门控心肌断层显像未见心肌缺血改变而冠脉造影显示有明显的冠状动脉狭窄的病人有5例。结论：对冠心病的诊断核素心肌灌注显像与冠脉造影的价值是互补的。     

潘生丁负荷MR首次通过灌注显像评价心肌缺血

目的了解潘生丁负荷MR首过灌注(MRFP)显像在冠心病诊断中的临床意义.方法 42例拟诊冠心病的患者,按临床分为心肌梗死、心肌缺血、正常三组,行MRFP显像,其中25例行冠状动脉造影(CAG),并按冠脉狭窄程度分为狭窄<50%,50%～99%和100%三组.制定5分制标准,定性判断MRFP图像.分别分析临床分组和CAG分组的MR心肌灌注显像结果.结果定性判断MRFP图像对冠心病诊断的敏感性、特异性与准确性分别为90%、70%和80%.MRFP与临床分组的相关系数r=0.352(P=0.041);MRFP与CAG分组的相关系数r=0.402(P=0.001).出现灌注缺损的比例在临床分组中,分别为85.7%、61.1%和33.3%;在CAG分组中,分别为20%、60%和100%.结论 MRFP显像能够区分缺血和正常心肌,对冠心病诊断有一定意义.     

符合电路SPECT心肌灌注／代谢显像诊断冠心病的初步研究

目的 研究符合电路SPECT心肌灌注／代谢显像诊断冠心病的临床价值。方法 28例冠心病患者,男26例,女2例分别行心肌血流灌注和心肌代谢显像,全部28例均行冠状动脉造影,25例行心电图运动平板试验。结果 以冠脉造影为金标准,心肌灌注显像、心肌灌注／代谢显像和心电图运动平板试验诊断冠心病的准确率分别为82．14％,89．28％和72％（P＜0．05和P＜0．01）。结论 符合电路SPEFCT心肌灌注／代谢显像,在冠心病的诊断中具有一定的应用价值,且优于静息心肌血流灌注显像和心电图运动平板。     

静息99mTc-MIBI心肌灌注断层显像诊断男性冠心病价值评估

目的：研究静息^99mTc-MIBI心肌灌注单光子发射计算机断层显像（SPECT）对男性冠心病的诊断价值。方法：以选择性冠状动脉造影术（CAG）为对照，将57例男性患者分为冠心病组（33例）及非冠心病组（24例），计算SPECT的各项评价指标，继而结合临床诊断将冠心病组分为心肌梗塞组（18例）及心绞痛组（15例），比较两组SPECT阳性率差异。结果：静息SPECT诊断男性冠心病灵敏度为87．88％，特异度为70．83％，准确度为80．70％，阴性预测值为80．95％，提示SPECT对男性冠心病检出率，符合率较高，而阴性对排除冠心病有较高的价值，心肌梗塞组阳性率为100％（18／18），心绞痛组为73．33％（11／15），提示静息SPECT检出男性心肌梗塞的阳性率高于心绞痛。结论：结合实验结果及SPECT具有无创，价廉，可重复等特点，SPECT可作为诊断男性冠心病的初筛检查。     

纵隔肿大淋巴结的诊断

目的 探讨规范诊断纵隔肿大淋巴结程序及提高诊断效率的临床思路。方法 采用核素断层显像(^99mTc-MIBISPECT)与纵隔镜检查术对纵隔肿大淋巴结进行检查和诊断。结果 ^99mTc-MIBI SPECT对纵隔转移淋巴结诊断的敏感性、特异性和准确性分别为85．19％、93．62％、90．54％；纵隔镜检查术对纵隔不明性质肿物或肿大淋巴结的诊断率为93．33％。结论 ^99mTc-MIBI SPECT对纵隔转移淋巴结的预测具有独特价值；纵隔镜检查术对纵隔肿大淋巴结的诊断准确率最高。为了提高对纵隔肿大淋巴结的诊断效率，必须结合相应疾病的特征，遵循一定的程序和步骤。     

Technetium-99m-labelled HL91 and technetium-99m-labelled MIBI SPECT imaging for the detection of ischaemic viable myocardium: a preliminary study

Purpose: The assessment of myocardial viability has become an important aspect of the diagnostic and prognostic work‐up of patients with coronary artery disease. Technetium‐99m labelled sestamibi (^99mTc‐MIBI) myocardial perfusion imaging may underestimate the viability of ischaemic myocardium. Technetium‐99m labelled 4,9‐diaza‐3,3,10,10‐tetramethyldodecan‐2,11‐dione dioxime (^99mTc‐HL91) is a hypoxia‐avid agent which can identify acutely ischaemic viable myocardium in a canine model using a standard gamma camera. The aim of this study was to evaluate uptake character of ischaemic viable myocardium and diagnostic performance of single‐photon emission computed tomography (SPECT) imaging by ^99mTc‐HL91 and ^99mTc‐MIBI in detecting ischaemic viable myocardium in coronary heart disease. Methods: A total of 41 patients with coronary artery disease were recruited from March 2008 to May 2009. For detecting ischaemic viable myocardium, SPECT imaging by ^99mTc‐HL91 and ^99mTc‐MIBI were performed in all patients before coronary revascularization. Six patients with single ischaemic myocardial segment received a 2‐day SEPCT/CT imaging protocol and the uptake of ^99mTc‐HL91 in ischaemic myocardium was quantitatively analysed. The remaining 35 patients received a 1‐day ^99mTc‐HL91 and ^99mTc‐MIBI SPECT imaging protocol. Resting ^99mTc‐MIBI myocardial perfusion imaging in 3–18 months after revascularization was used as the standard methodology to evaluate the myocardial viability. Results: In 41 patients, 66 ischaemic myocardial segments were proven to be viable and 12 to be necrotic by resting ^99mTc‐MIBI myocardial perfusion imaging after coronary revascularization. Furthermore, 60 viable segments with negative uptake of ^99mTc‐MIBI showed positive uptake of ^99mTc‐HL91. The remaining six viable segments and 12 necrotic segments showed both negative uptake of ^99mTc‐HL91 and ^99mTc‐MIBI. The sensitivity, specificity, accuracy, Younden Index, positive predictive value and negative predictive value for evaluating ischaemic viable myocardium were 90·9%, 100%, 92·3%, 90·9%, 100% and 66·7%, respectively. Ischaemic viable myocardium had the negative ^99mTc‐MIBI uptake and positive ^99mTc‐HL91 uptake, which demonstrated a mismatched uptake character. Quantitative analysis indicated the uptake of ^99mTc‐HL91 in viable myocardium was increasing in the first 1–3 h and remained stable at the 3–4 h after injection. Conclusion: Functional SPECT imaging with ^99mTc‐HL91 and ^99mTc‐MIBI can be used to detect the seriously ischaemic but viable myocardium with a mismatched uptake character. The uptake of ^99mTc‐HL91 in the viable myocardium reached a stable level at 3–4 h after injection.     

^99mTc—MIBI显像检测乳腺癌腋下淋巴结转移的价值

目的 观察^99mTc-MIBI乳腺显像检测乳腺癌腋下淋巴结转移的临床价值。方法 56例乳腺癌患术前行乳腺核素显像,乳腺内或腋窝区出现异常放射性分布浓聚影为阳性,显像结论与术后病理结果对照。结果 56例乳腺癌腋下淋巴结显像阳性有19例,与病理对照,诊断乳腺癌腋下淋巴结转移的灵敏度为65．52％,特异性为100％,准确率为82．14％,阴性预测值为72．98％,阳性预测值为100％。结论 ^99mTc-MIBI乳腺显像诊断乳腺肿瘤腋下淋巴结有较高的临床价值。     

新型心肌灌注显像剂^99mTc—tetrofosmin诊断冠心病的价值

目的：探讨新型心肌灌注显像剂^99mTc-tetrofosmin诊断冠心病的临床价值。材料与方法：对59例确诊或疑诊并已行冠状动脉造影的患者进行运动。静息心肌灌注断层显像,分别在运动高峰及静息状态静脉注射^99mTc-tetrofosmin740MBq后30－60min按常规方法做SPECT断层采集。结果：在注射^99mTc-tetrofosmin的后无任何不适反应,并获得良好心肌断层图像,以冠状动脉造影结果为金标准,^99mTc-tetrofosmin诊断冠心病的灵敏度、特异性及准确度分别为89．1％,84．6％及88．1％。结论：^99mTc-tetrofosmin具有标记简便,给药后无需脂餐促排、显像时间短、图像质量清晰及诊断准确度较高等特点,有着良好的临床应用前景。     

腺苷负荷心肌灌注显像对冠心病的诊断价值

【目的】评价腺苷负荷试验心肌灌注显像对冠心病的诊断价值及腺苷负荷试验的安全性。【方法】收集2011年2月至2013年2月在本院疑诊冠心病患者75例,均行腺苷负荷^99m Tc-甲氧基异丁基异腈（MIBI）心肌灌注断层显像,腺苷按体重0．14 mg/（kg ·min）通过输液泵静脉双通路给药,并对心肌灌注断层显像图作定性分析,所有患者1～3 d后行冠状动脉造影检查。【结果】75例患者中冠脉造影正常32例;1支以上狭窄≥50％者43例,其中单支病变14例,双支病变16例,三支病变13例;共检出病变血管85支,累及左前降支（L AD ）38支,左回旋支（LCX）28支,右冠状动脉（RCA）21支,左主干（LM）2支。腺苷负荷心肌灌注显像诊断冠心病的灵敏度为88．3％（38/43）,特异性为87．5％（28/32）,准确性为88．0％（66/75）,阳性预测值为90．5％（38/42）,阴性预测值为84．8％（28/33）。对病变冠脉诊断灵敏度为75．9％（63/83）,特异性93．7％（133/142）,准确性87．1％（196/225）,阳性预测值为94．0％（63/67）,阴性预测值为84．2％（133/158）。对单支、双支、3支血管病变诊断的灵敏度分别为50％（7/14）、62．5％（10/16）和92．3％（12/13）。对各病变血管检测灵敏度为：LAD 86．1％（31/36）,LCX 55．6％（15/27）,RC A 85％（17/20）。腺苷不良反应总发生率为80％（60/75）。【结论】腺苷负荷试验心肌灌注显像诊断冠心病敏感性及特异性均较高,并且不良反应轻微,是协助诊断冠心病安全有效的方法。     

Coronary artery function and myocardial perfusion in patients with ischemic heart disease isolated and in combination with arterial hypertension

AIM: To characterize coronary arteries and myocardial perfusion in isolated ischemic heart disease (IHD) and IHD combined with blood hypertension (BH). MATERIALS AND METHODS: 20 patients with isolated IHD and 25 patients with combined IHD have undergone coronarography, scintigraphy of the myocardium with Tc-99m, echocardiography. RESULTS: In the combined IHD, overall involvement of the heart arteries appeared less than in isolated IHD (33.40 +/- 7.07% versus 41.40 +/- 8.9%). In the combined IHD and left ventricular hypertrophy (LVH) overall involvement of the heart arteries was less while occurrence of perfusion disorders higher than in the absence of LVH (35.98 +/- 4.73% vs 47.21 +/- 5.91%, and 33.7 vs 25.0%, respectively). Defects in the myocardial perfusion both in right and left coronary artery, isolated and combined IHD were of the same type location. CONCLUSION: Disturbed myocardial perfusion is an essential factor in the onset of coronary insufficiency.     

^99mTc—MIBI显像预测乳腺癌新辅助化疗疗效的临床应用

目的 探讨^99mTc-MIBI显像预测乳腺癌新辅助化疗（NCT）疗效的临床价值.方法 50例局部进展期乳腺癌（LABC）患者化疗前行^99m Tc-MIBI显像,计算早期摄取比值（EUR）、晚期摄取比值（DUR）及清除率[WR=（EUR-DUR）/EUR×100%].按照WHO制定的实体瘤疗效评定标准评价疗效,对化疗有效组及化疗无效组WR、EUR、DUR进行统计学比较.结果 化疗有效组与化疗无效组在WR、EUR、DUR值比较差异均有统计学意义（P＜0.05）.结论 ^99mTc-MIBI乳腺肿瘤显像中摄取与清除率WR在治疗有效组与无效组中均有统计学意义,肿瘤^99mTc-MIBI摄取越高,清除率越低,疗效越好,可有效预测LABC患者术前NCT疗效.     

A comparative evaluation of Tl-201 and Tc-99m sestamibi myocardial perfusion spect imaging in diabetic patients

Aim Myocardial perfusion scintigraphy (MPS) is an effective tool for early diagnosis of coronary artery disease (CAD) in type II diabetes mellitus (DM). The purpose of this study was to review the comparative findings of Tc-99m MIBI and Tl-201 MPS in defining normal and abnormal myocardial segments, type and extent of the perfusion defects with reference to coronary angiography findings in diabetic patients. Methods Thirty patients with type II DM who had abnormal Tc-99m MIBI MPS findings and underwent coronary angiography were included this study (20 male, 10 female; mean age was 64 ± 11 years). Those patients were also investigated with Tl-201 MPS thereafter. All scintigraphic images were evaluated semiquantitatively using a 20-segments myocardial model. The perfusion of myocardial segments, reversibility and severity of defects based on defect score were compared using the MIBI and Tl-201 images in relation to coronary angiography. Diffuse slow-washout of Tl-201 was also noted. Results A total of 600 myocardial segments were comparatively analyzed. Diagnostic concordance between both tracers in defining normal and abnormal perfusion on a segmental basis was 88% (κ = 0.71). The percentage of normal, reversible and non-reversible segments in the Tc-99m MIBI and Tl-201 study were 67–61%, 11–20% and 22–19% respectively. While the number of irreversible defects were similar for both tracers, more number of reversible defects were identified by Tl-201 MPS than Tc-99m MIBI (65 vs. 123, p = 0.001). No significant difference between the defect scores of both tracers was found. Conclusion MPS using both tracers offered agreement in defining or excluding perfusion abnormalities in a major part of the data. However, Tl-201 MPS yielded better detection rate of myocardial ischemia than Tc-99m MIBI MPS in diabetic patients.     

99Tcm-MIBI SPECT心肌显像在心脏移植术后随访的临床应用价值

目的评价^99m锝-甲氧基异丁基异腈（^99Tc^m-MIBI）运动-静息SPECT心肌显像在心脏移植术后随访的临床应用价值。方法对10例长期存活的心脏移植患者进行^99Tc^m-MIBI运动-静息心肌显像随访心肌血供情况,同时进行冠状动脉造影、心电图等检查。结果经^99Tc^m-MIBI运动-静息心肌灌注显像示有4例患者出现放射性分布可逆性缺损,提示该节段心肌缺血,与冠状动脉造影检查结果相符。心电图均基本正常。结论心脏移植长期存活患者定期行^99Tc^m-MIBI运动-静息心肌显像,有助于早期了解心肌血流灌注情况,对其后续治疗决策具有一定的临床应用价值。