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1.
Objective To investigate the relationship between the risk stratification of cardiovascular diseases and the outcome of 64-slice helical computed tomography (MSCT) coronary angiography. Methods A total of 470 cases suspected to have coronary heart disease were enrolled.They all received 64-slice MSCT coronary angiography, and they were divided into groups according to the range of disease, degree of calcium scoring, degree of stenosis and characteristic of plaque. Among them, 80 patients underwent both MSCT and selective coronary angiography (CAG) at one time, and they were grouped according to the range of disease and degree of stenosis. All the 470 cases were classified as five levels according to the risk stratification of cardiovascular diseases. The lesions of coronary artery in different risk stratifications were observed, and the correlations were analyzed.Results In the 80 patients who underwent both MSCT and selective CAG, there were no significant differences in the range of coronary artery diseases(χ2=3.631, P=0.067) and coronary arterystenosis (χ2=1.639, P=0.200) between MSCT and CAG. Along with the increased level of the risk stratification, there were the more ranges of the coronary artery diseases (λvery high risk. multi-vessel disease=1.09,λhigh risk. double-vessel disease=0.91, λlow-risk. single-vessel disease=1.07)and the more degrees of coronary artery stenosis(λvery high risk. severe stenosis=0.96,λhigh risk. moderate stenosis=1.03,λlow-risk. mild stenosis=0.78). The degrees of calcium scoring in different risk stratifications of cardiovascular diseases showed significantly differences (F=256.20,123.76,62.50, 98. 24,52.36,P<0.01). There was the highest percentage of soft plaque in very high risk patients.Higher percentages of fiber plaque, calcified plaque and mixed plaque were found in moderate risk and low risk patients(λvery high risk. soft plaque=1.01,λlow-risk. calcium plaques=1.17). Conclusions The 64-slice MSCT coronary angiography could provide a basis for assessing risk stratification of cardiovascular diseases. The complicated coronary artery disease, moderate-severe calcification, more severe stenosis, higher percentage of soft plaque are found in the very high risk patients. The lower level of the risk stratification is found in patients with the less range of the coronary artery disease and less severe degree of the coronary artery calcification and stenosis. The calcified plaque and mixed plaque are found in moderate risk and low risk patients.  相似文献   

2.
Objective To investigate the relationship between the risk stratification of cardiovascular diseases and the outcome of 64-slice helical computed tomography (MSCT) coronary angiography. Methods A total of 470 cases suspected to have coronary heart disease were enrolled.They all received 64-slice MSCT coronary angiography, and they were divided into groups according to the range of disease, degree of calcium scoring, degree of stenosis and characteristic of plaque. Among them, 80 patients underwent both MSCT and selective coronary angiography (CAG) at one time, and they were grouped according to the range of disease and degree of stenosis. All the 470 cases were classified as five levels according to the risk stratification of cardiovascular diseases. The lesions of coronary artery in different risk stratifications were observed, and the correlations were analyzed.Results In the 80 patients who underwent both MSCT and selective CAG, there were no significant differences in the range of coronary artery diseases(χ2=3.631, P=0.067) and coronary arterystenosis (χ2=1.639, P=0.200) between MSCT and CAG. Along with the increased level of the risk stratification, there were the more ranges of the coronary artery diseases (λvery high risk. multi-vessel disease=1.09,λhigh risk. double-vessel disease=0.91, λlow-risk. single-vessel disease=1.07)and the more degrees of coronary artery stenosis(λvery high risk. severe stenosis=0.96,λhigh risk. moderate stenosis=1.03,λlow-risk. mild stenosis=0.78). The degrees of calcium scoring in different risk stratifications of cardiovascular diseases showed significantly differences (F=256.20,123.76,62.50, 98. 24,52.36,P<0.01). There was the highest percentage of soft plaque in very high risk patients.Higher percentages of fiber plaque, calcified plaque and mixed plaque were found in moderate risk and low risk patients(λvery high risk. soft plaque=1.01,λlow-risk. calcium plaques=1.17). Conclusions The 64-slice MSCT coronary angiography could provide a basis for assessing risk stratification of cardiovascular diseases. The complicated coronary artery disease, moderate-severe calcification, more severe stenosis, higher percentage of soft plaque are found in the very high risk patients. The lower level of the risk stratification is found in patients with the less range of the coronary artery disease and less severe degree of the coronary artery calcification and stenosis. The calcified plaque and mixed plaque are found in moderate risk and low risk patients.  相似文献   

3.
目的评价64层CT冠状动脉成像(SCTCA)对冠状动脉临界病变狭窄程度和斑块性质判断的准确度。方法 50例拟诊或确诊冠心病患者分别行64层SCTCA和血管内超声(IVUS),并以IVUS结果作为标准进行对比分析。结果 64层SCTCA诊断冠状动脉临界狭窄的敏感性、特异性、准确性分别为88.9%、96.6%、94.8%;准确检出了28处脂质斑块中的23处、15处纤维斑块中的12处及11处钙化性斑块中的10处。结论 64层SCTCA评估冠状动脉临界病变具有较高的准确性,值得推广。  相似文献   

4.
目的评价128层螺旋CT冠状动脉成像(128层CTCA)在冠状动脉狭窄诊断中的价值。方法选择2011年1月—2013年10月在我院检查疑似冠状动脉狭窄患者305例,均采用128层CTCA进行检查,并于2周内行冠状动脉造影术(CAG)检查。结果 128层CTCA诊断冠状动脉狭窄的敏感度为92.02%、特异度为95.76%、准确度为94.87%。128层CTCA诊断冠状动脉轻度狭窄的敏感度为91.60%、特异度为98.85%;诊断冠状动脉中度狭窄的敏感度为92.38%、特异度为98.72%;诊断冠状动脉重度狭窄的敏感度为93.83%、特异度为98.16%;诊断冠状动脉闭塞的敏感度为85.19%、特异度为99.43%。结论 128层CTCA诊断冠状动脉狭窄有较高的敏感度、特异度,尤其对轻中度狭窄有更好的准确性,可以作为临床冠状动脉狭窄的常规筛检及舒缓随访手段之一,以避免不必要的有创检查。  相似文献   

5.
目的 探讨64层螺旋CT冠状动脉支架成像效果的影响因素.方法选取冠状动脉药物涂层金属支架植入术后行64层螺旋CT检查的病例116例,对支架部位图像质量采取半定量评价,分析支架直径、支架长度、支架材质、支架个数和钙化情况对支架部位CT图像质量的影响.结果 64层螺旋CT检出有意义支架内再狭窄的敏感度、特异度、阳性预测值、阴性预测值分别为85.7%、90.2%、60.0%、97.4%.直径2.75 mm以上支架的CT图像质量优于直径2.75 mm及以下的支架(P<0.001),非钙化病变的支架术后CT图像质量优于钙化病变(P<0.05).支架长度、支架材质和是否多支架对支架部位CT图像质量无影响.结论 64层螺旋CT能胜任冠状动脉支架术后复查.直径2.75 mm以上支架和非钙化病变的支架病例更适合用64层螺旋CT进行复查.  相似文献   

6.
目的 探讨64层螺旋CT冠状动脉成像(64SCTA)检测冠状动脉粥样斑块的价值,分析形成不稳定斑块的危险因素.方法 选择112例住院冠心病患者行64SCTA和导管法冠状动脉造影,均检测血清内皮素-1、基质金属蛋白酶-9(MMP-9)、白介素-6(IL-6)、肿瘤坏死因子-α和超敏C反应蛋白(hs-CRP).以冠状动脉造影为标准评价64SCTA检测冠状动脉斑块的作用;根据检测正确的粥样斑块CT值将患者分为软斑块组(51例)和非软斑块组(61例),比较两组各检测指标的差异,分析软斑块形成的危险因素. 结果 64SCTA检测冠状动脉斑块的灵敏度为87.4%,特异度为87.1%,阳性预测值82.2%,阴性预测值91.0%.软斑块组与非软斑块组比较,MMP-9、IL-6、hs-CRP、冠状动脉病变数及诊断、性别和糖尿病的构成比差异有统计学意义.Logistic回归分析显示,MMP-9>5.231 ng/L(P=0.0215,OR=2.33,95%CI 1.13~4.79)、hs-CRP>3.583 mg/L(P=0.0008,OR=4.32,95%CI 1.84~10.15)和不稳定心绞痛(P=0.0339,0R=4.33,95%CI 1.12~16.77)为软斑块形成的危险因素.结论 64SCTA检测冠状动脉斑块价值较高,是目前无创方法检测冠状动脉斑块最为可靠的手段之一.MMP-9、hs-CRP和不稳定心绞痛为不稳定斑块的独立危险因素.  相似文献   

7.
目的经多层冠状动脉CT检查测定的冠状动脉钙化积分对冠心病的诊断具有一定预测价值。而冠心病的危险因素与冠心病的发生、发展、结局和预后密切相关。我们旨在探讨冠状动脉钙化积分与冠心病诸多危险因素之间是否具有相关性。方法入选2001年1月至2007年3月在全国20家医院住院疑诊冠心病患者,采用16排或64排螺旋CT进行冠状动脉增强扫描,并运用自动分析软件进行冠脉钙化积分分析,共入选患者311例,根据冠状动脉钙化积分值分为低分值组(0~12)、中分值组(13~445)和高分值组(446以上),比较冠状动脉钙化积分与冠心病危险因素之间的关系。结果不同冠状动脉钙化积分分组之间,平均年龄、冠心病家族史比例、高密度脂蛋白数值和糖尿病比例等方面存在差异,P〈0.05。多元Logistic回归分析显示,疑诊冠心病患者年龄(OR=1.061,95%CI1.004~1.121,P=0.036)和低HDL-C水平(OR=0.321,95%CI0.113~0.909,P=0.032)是冠状动脉钙化积分的显著相关危险因素。结论年龄、冠心病家族史、低HDL和糖尿病等冠心病危险因素与冠状动脉钙化密切相关,合并多种冠心病危险因素的患者,尤其是老年和低HDL-C患者,行多层冠状动脉CT检查及冠状动脉钙化积分测定,对冠心病的早期诊断具有一定帮助。  相似文献   

8.
目的探讨用Meta分析方法评价64层螺旋CT对冠状动脉狭窄的诊断价值。方法在Medline、Cochrane图书馆及中国数字化期刊网/万方数据库检索2005年1月~2007年3月有关64层螺旋CT对比冠状动脉造影在冠状动脉疾病诊断价值的文献。数据处理采用随机效应模型。结果共纳入16篇参考文献的关于64层螺旋CT对比冠状动脉造影的应用研究,冠状动脉节段共计12615段,4.2%的冠状动脉段无法评价被排除。冠状动脉总体敏感性90.7%,特异性95.9%,阳性似然比23.05,阴性似然比0.08,阳性预测值83.6%,阴性预测值97.3%,OR值297.37,SROC曲线下面积0.9876。结论64层螺旋CT在冠心病高危人群有很高的诊断价值,可以作为重要的筛查和诊断方法之一。  相似文献   

9.
目的探讨64层螺旋CT对冠状动脉粥样硬化病变的显示情况及临床价值。方法对69例临床诊断或疑诊冠心病的患者行64层螺旋CT冠状动脉成像检查及导管法冠状动脉造影。冠状动脉管腔内径减少>50%定义为显著狭窄。结果在69例患者冠状动脉的788节段(血管直径≥1.5mm)中,CT图像能够满足管腔评价者为778节段(98.7%),其中64层螺旋CT显示中度或中度以上狭窄(≥50%)的敏感性和特异性分别为81.9%和99.0%,阳性预测值和阴性预测值分别为95.9%和95.1%。如果在方法学上进行校正,敏感性将达91.8%。结论64层螺旋CT显示冠状动脉狭窄的准确性(95.2%)较高,在冠状动脉疾病的初步诊断以及介入治疗的筛选方面,是一种颇具潜力的无创性检查方法,但尚不能完全取代传统的导管法冠状动脉造影。  相似文献   

10.
目的探讨和评价64排螺旋CT(MSCT)在冠心病诊断中的有效性。方法选取在3周内行64排MSCT和冠状动脉造影(CAG)检查的临床可疑或确诊冠心病的患者(两项检查平均间隔时间9d)114例,其中男性62例,平均年龄65岁。将MSCT和CAG检查结果进行分析,管腔狭窄≥50%定义为明显狭窄。结果在114例患者中,CAG检出至少有1处明显狭窄的患者106例,其中单支病变占33%(38例),多支病变占60%(68例)。MSCT检出其中的104例(诊断准确度95%)。按节段分析,MSCT诊断冠状动脉明显狭窄的灵敏度、特异度、阳性预测值、阴性预测值分别为87%、96%、86%、96%。以各冠状动脉分析,MSCT诊断冠状动脉明显狭窄的灵敏度、特异度、阳性预测值、阴性预测值分别为96%、94%、95%、96%。MSCT与CAG在发现冠状动脉明显狭窄上差异无统计学意义(P〉0.05)。结论64排MSCT诊断冠状动脉狭窄的准确度较高,作为一种冠心病诊断的无创筛查手段,有广泛的临床应用价值。  相似文献   

11.
64层螺旋CT冠状动脉成像对冠心病诊断的应用价值   总被引:1,自引:0,他引:1  
目的 通过探讨64层螺旋CT冠状动脉成像(64-SCTCA)对冠心病诊断的应用价值以明确临床上适于该项检查的人群.方法 回顾性分析285例接受64-SCTCA检查、并于4周内接受冠状动脉造影(CAG)检查的冠心病疑诊患者的临床资料.依照冠心病概率Duke模型,将受检者分为冠心病低危(n=80)、中危(n=92)和高危(n=113)3组,以CAG为"金标准",判断64-SCTCA诊断冠心病的准确性以及冠状动脉钙化、不同部位血管节段等因素对诊断准确性的影响.结果 64-SCTCA诊断冠心病的敏感性、特异性、阳性预测值、阴性预测值和诊断准确指\数分别为81.2%、93.3%、68.0%、96.6%和74.5%.冠心病概率Duke模型的低危组、中危组和高危组,其冠心病检出率分别为46.3%、72.8%和82.3%;64-SCTCA在低危组诊断冠心病的敏感性及阳性预测值明显低于中危组和高危组.对于冠状动脉Agatston钙化积分>400分组,64-SCTCA诊断冠心病的敏感性(95.0%)明显高于0~100分组和101~400分组(77.4%和77.3%,P均<0.05),特异性(82.2%)明显低于上述两组(94.0%和95.3%,P均<0.05).其诊断远端血管病变的敏感性、阳性预测值均明显低于近、中段血管(P均<0.05).结论 64-SCTCA主要适用于冠心病概率Duke模型临床分层的中危人群.其诊断准确性受冠状动脉钙化、病变部位、管腔直径等因素影响.  相似文献   

12.
64层CT冠状动脉成像的前瞻性与回顾性心电门控比较   总被引:3,自引:0,他引:3  
目的 比较前瞻性心电门控和回顾性心电门控64层CT冠状动脉成像的辐射剂量和成像质量,探讨低剂量前瞻性心电门控CT冠状动脉成像的可行性.方法 两组心率≤65次/min各100例患者分别进行前瞻性和回顾性心电门控扫描,并采用多平面重组(MPR)、最大密度投影(MIP)、曲面重组(CPR)及容积再现(VR)多种重组技术显示冠状动脉,图像质量根据运动伪影影响分为优、良、差,使用剂量长度计算各自的有效辐射剂量,并进行统计学分析.结果 前瞻性组平均辐射剂量为(2.81±0.48)mSv明显低于回顾性组的(10.16±1.09)mSv(P<0.01);前瞻性组诊断性冠状动脉节段和非诊断性冠状动脉节段为95.2%(1165/1224)和4.8%(59/1224),与回顾性组的94.1%(1186/1261)和5.9%(75/1261)比较,差异无统计学意义.结论 对于心率稳定在65次/min以下的患者,前瞻性心电门控64层CT冠状动脉成像,能以较低的辐射剂量达到回顾性心电门控诊断质量的影像,是切实町行的方法.  相似文献   

13.
目的:探讨320排螺旋CT冠状动脉成像对冠心病诊断的临床应用价值。方法:85例病人先后进行320排螺旋CT冠状动脉成像(SCTCA)和选择性冠状动脉造影(CAG)。以CAG为诊断冠心病(CHD)的"金标准",比较320排螺旋CT检出CHD的敏感度,特异度,阳性预测值,阴性预测值和准确度。结果:320排螺旋CT诊断CHD的敏感性,特异性,阳性预测值,阴性预测值,准确度分别是:95.65%(44/46)、74.36%(29/39)、81.48%(44/54)、93.55%(29/31)、85.9%(73/85)。结论:320排螺旋CT冠状动脉成像是一种简单易行、安全可靠的无创性检查,可作为冠心病的筛选及术后复查的方法。  相似文献   

14.
413例冠脉造影患者危险因素与冠脉病变的相关性研究   总被引:1,自引:0,他引:1  
目的:探讨冠脉造影患者心血管危险因素与冠脉病变的相关性。方法:对于南方医院住院的2004年6月至2008年12月的413例行冠脉造影患者,采集病历数据,包括性别、年龄、体重指数、吸烟、高血压病、2型糖尿病、低密度脂蛋白-胆固醇(LDL-C)、高密度脂蛋白-胆固醇(HDL-C)、甘油三酯(TG)、尿酸(UA)、纤维蛋白原(Fg)、C-反应蛋白(CRP)及血清总胆红素(TBIL)等指标,冠脉造影通过直径目测法判断是否患冠心病。以单因素分析心血管危险因素与冠脉病变的关系,采用多因素Logistic回归分析筛选冠心病的独立相关危险因素。结果:(1)冠心病组患者男性比例、平均年龄、体重指数、LDL-C、TG、UA、CRP、Fg水平均显著高于非冠心病组,HDL-C水平显著低于非冠心病组,合并吸烟、高血压、糖尿病的病例显著多于非冠心病组(P〈0.05~〈0.01);(2)Logistic回归分析显示,LDL-C、吸烟、糖尿病、高血压、体重指数、HDL-C、增龄、高尿酸入选回归方程(OR=3.559~1.003,P〈0.05~〈0.001),其中LDL-C为最显著的独立相关出素(OR:3.559,95%可信区间2.143~5.911,P〈0.001)。结论:LDL-C水平升高、吸烟、糖尿病、高血压、体重指数上升、HDH—C水平降低、增龄、高尿酸水平为冠心病的显著,独立相关因素。  相似文献   

15.
目的比较64层计算机断层摄影扫描冠状动脉成像技术(64-slice computed tomography coronaryangiography,64-SCTCA)和冠状动脉造影(coronary artery angiography,CAG)在冠状动脉粥样硬化性心脏病(冠心病)诊断中的价值。方法回顾性分析126例疑似冠心病的患者64-SCTCA和CAG检查资料,并对两组资料进行对比分析。结果 64-SCTCA和CAG检查结果中可用于评价的病变血管段支数比较,差异无统计学意义(P0.05)。CAG共发现≥50%狭窄节段242个,64-SCTCA共发现≥50%狭窄节段199个,两种检查方法对病变狭窄的显示情况比较,差异无统计学意义(P0.05)。全部126例冠心病患者中有91%通过64-SCTCA发现(110/121)。64-SCTCA诊断冠状动脉病变血管的敏感性、特异性、阳性预测值、阴性预测值分别为81.6%、98.8%、79.5%、99%。结论 64-SCTCA可作为冠心病无创、便捷、可靠的检查方法。  相似文献   

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