320排动态容积CT冠状动脉成像与冠状动脉造影对比观察

目的比较320排动态容积CT（DVCT）冠状动脉成像和冠状动脉造影（CAG）对诊断冠状动脉狭窄的准确性。方法对56例患者的672个冠状动脉节段进行320排DVCT冠状动脉成像及CAG,并进行对比分析。结果可用于评估的672个冠状动脉节段中,CAG显示病变140个,320排DVCT显示其中132个,320排DVCT诊断冠状动脉病变的总体敏感度、特异度、阳性预测值和阴性预测值分别为92.3%、99.2%、96.9%和97.9%。冠状动脉管壁严重钙化是图像质量失实的主要原因。结论 320排DVCT在显示冠状动脉病变时,具有较高的敏感度和特异度,并且对于病变程度的评估也比较准确,对于预测及早期诊断冠心病,有重要的临床应用价值。     

心房颤动患者双源CT冠状动脉成像与冠状动脉造影的对比研究

评价双源CT(DSCT)冠状动脉成像在心房颤动（房颤）患者冠心病诊断中的价值。对我院就诊的42例临床疑诊冠心病的房颤患者先进行DSCT冠状动脉成像,7天内行冠状动脉造影（CAG）检查。以CAG诊断结果为标准,分析DSCT冠状动脉成像诊断房颤患者冠状动脉中重度狭窄的敏感度、特异度、准确度及一致性。DSCT冠状动脉成像显示房颤患者冠状动脉病变具有较高的敏感度、特异度和准确度,为房颤患者的冠心病诊断提供了一个无创而又较为可靠的方法。     

双源CT对男性冠状动脉粥样硬化性心脏病的诊断价值

目的探讨双源CT（DSCT）对男性和女性冠状动脉粥样硬化性心脏病（coronary atherosclerotic heart disease,CAHD）的诊断价值。方法入选疑诊为CAHD的受检者共105例（男61例,女44例）,分别行DSCT和选择性冠状动脉造影（coronary angiography,CAG）检查,以CAG为诊断CAHD的金标准,评估检查结果。结果 105例受检者中,DSCT共显示1184个冠状动脉节段可进行评价。DSCT诊断男性受检者冠状动脉显著狭窄的敏感性为93.6%,特异性为95.1%,阳性预测值为73.9%,阴性预测值为99.0%,诊断符合率为94.9%;诊断女性受检者冠状动脉显著狭窄的敏感性为84.1%,特异性为94.4%,阳性预测值为77.9%,阴性预测值为96.2%,诊断符合率为92.4%。女性受检者接受DSCT检查诊断冠状动脉显著狭窄的敏感性和阴性预测值低于男性（P〈0.05）。结论 DSCT在显示冠状动脉病变时具有较高的诊断准确率,尤其适用于男性。     

螺旋CT评估冠状动脉狭窄与钙化的价值

选择2004-10/2005-07在徐州医学院附属医院心内科住院的临床诊断或疑诊冠心病的患者33例作16层螺旋CT冠状动脉成像。男14例,女19例;年龄范围43～81岁。采用回顾性心电门控、0.4s/周扫描,其结果与冠状动脉造影对照。共评价33例患者的396个冠状动脉节段,可用于诊断者344个节段,约占86.9%。对符合评价条件的冠状动脉节段16层螺旋CT诊断≥50%狭窄的敏感性、特异性、阳性预测值、阴性预测值分别为:87.7%,94.3%,78.0%,97.0%。根据冠状动脉造影结果,冠心病26例,非冠心病7例,16层螺旋CT发现冠心病患者含钙化节段59个,无钙化节段215个,非冠心病受检者中检出含钙化节段3个,无钙化节段67个。两者比较差异显著(P<0.005)。16层螺旋CT显示冠状动脉狭窄具有较高的敏感性、特异性和准确性,可以作为筛选冠状动脉病变的影像学诊断方法。16层螺旋CT可发现冠心病与非冠心病冠状动脉钙化的差异,钙化广泛者应建议冠状动脉造影检查。     

DSCT对PCI术后管腔再狭窄的诊断价值

目的 评估双源CT（DSCT）冠状动脉成像检查对冠心病冠状动脉支架置入术（PCI）术后病人支架内管腔再狭窄的诊断价值。方法 2012年4—12月,选取就诊于我院心脑血管分院的冠心病PCI术后病人98例,进行DSCT冠状动脉成像检查,以选择性冠状动脉造影（CAG）为标准,观察其诊断的灵敏度、特异度及准确性。结果 DSCT冠状动脉成像对冠状动脉支架内管腔情况显示良好,显示PCI术后管腔再狭窄与CAG检查相比差异无统计学意义（P〉0.05）,其诊断的灵敏度为87.8%,特异度为95.7%,准确性为93.4%,阳性预测值为92.8%,阴性预测值为91.3%。结论 DSCT冠状动脉成像作为一种方便、经济、安全、无创的检查手段,可作为冠心病PCI术后病人定期复查、预后评估及管腔再狭窄筛查的有效方法。     

多层螺旋CT冠状动脉成像对冠状动脉病变的诊断价值

目的探讨多层螺旋CT(MSCT)冠状动脉成像诊断冠状动脉病变的价值。方法选择2007年3月～2009年2月我科住院疑似和确诊的冠心病70例,首先行MSCT检查,1个月内行冠状动脉造影(CAG)检查,对MSCT与CAG结果结果进行比较。结果 9例CAG正常,双支病变26例,单支病变18例,三支病变17例。MSCT示40例存在钙沉积。3例MSCT示冠状动脉旁路移植桥血管闭塞,与CAG结果符合;1例MSCT示支架内闭塞,CAG示血管内膜增生。以CAG结果为金标准,MSCT检测冠状动脉明显狭窄灵敏度84.67%,特异度94.57%,阳性预测值78.38%,阴性预测值96.37%,诊断符合率92.70%,MSCT和CAG诊断冠状动脉节段明显狭窄差异无统计学意义(P>0.05)。结论 MSCT冠状动脉成像可作为冠状动脉病变的初步诊断手段。     

双源CT冠状动脉成像与冠状动脉造影的对比分析

目的评价双源CT诊断冠状动脉(冠脉)狭窄的临床价值。方法选择我院临床表现为典型心绞痛(58例)及疑似心绞痛(104例)的162例,均接受双源CT冠脉成像与冠脉造影检查(CAG),以CAG为诊断标准,对其影像学图像进行对照分析。结果本组共2430段可评价的冠状动脉节段,CAG显示正常1943段,检出病变487段(20.04%)。双源CT检查示正常1925段,异常505段(20.78%),双源CT显示冠脉狭窄的敏感性为96.44%,特异性为99.18%,阳性预测值为96.82%,阴性预测值为99.07%,符合率95.93%。双源CT和CAG发现冠脉狭窄率的差异无统计学意义(P>0.05)。结论双源CT为无创性检查方法,简单、易行,可作为冠心病的筛查及冠脉病变程度的评估依据。     

双源CT冠状动脉造影评价冠状动脉狭窄

目的 评价双源CT(DSCT)冠状动脉造影诊断冠状动脉狭窄的准确性.方法 收集104例临床疑诊或确诊冠心病并于30日内先后接受DSCT冠状动脉造影检查和导管法冠状动脉造影(CAG)患者,以CAG诊断结果作为金标准,分别评估DSCT诊断冠状动脉狭窄性病变(＜50％、≥500％和≥75％)的价值.结果 CAG显示1296段冠状动脉.DSCT可评估的冠状动脉为1217段,可评估率为93.90％(1217/1296);诊断＜500％、≥50％和≥75％狭窄的敏感度分别为79.12％ (144/182) 、84.73％ (172/203)和89.83％(106/118),特异度分别为97.33％(802/824) 、99.21％(1006/1014)和99.82％(1097/1099),阳性预测值为86.75％(144/166)、95.56％(172/180)和98.15％(106/108),阴性预测值为95.48％(802/840) 、97.01％(1006/1037)和98.92％(1097/1 109),准确率为94.04％(946/1006) 、96.80％ (1178/1217)和98.85％(1203/1217).钙化斑块是导致血管不可评估及误诊的主要原因.结论 DSCT冠状动脉造影判断冠状动脉狭窄程度的准确性较高,可作为临床筛查冠心病的较为可靠的方法.     

双源CT 冠状动脉血管成像对冠状动脉狭窄的诊断价值分析

目的:探讨应用双源CT冠状动脉血管成像(DSCT-CA)的检查方式对诊断冠状动脉狭窄的价值。方法:选取2019年1月—2020年5月期间我院65例疑似冠状动脉狭窄的患者,均接受冠脉造影(CAG)与DSCT-CA检查,以CAG检查为金标准,评价DSCT-CA对狭窄情况的诊断价值,并且以冠状动脉狭窄50%为界限,分析DSCT-CA诊断的准确度、敏感度及特异度。结果:检出595个冠状动脉节段,经CAG检出狭窄节段158个(26.55%),经DSCT-CA检出狭窄节段142个(23.87%);经DSCT-CA对冠状动脉狭窄50%的诊断准确度为96.92%(63/65)、敏感度为100.00%(47/47)、特异度为88.89%(16/18)。结论:应用DSCT-CA可对不同程度的冠状动脉狭窄的诊断价值显著,值得推广。     

40层螺旋CT对冠状动脉成像与冠状动脉造影的对比研究

目的 研究40层螺旋CT冠状动脉成像对冠状动脉疾病的诊断价值.方法 搜集79例可疑或已确诊为冠心病的患者进行40层螺旋CT扫描和常规冠状动脉造影,然后对2种检查方法的结果进行对比分析.结果 79例患者共有711个冠状动脉节段,其中675个（94.94%）可用于评价,结果显示40层螺旋CT诊断冠状动脉病变的敏感性为88.04%,特异性为91.08%,阳性预测值为77.47%,阴性预测值为93.56%.对冠状动脉〉50%狭窄的检出准确率为90.66%.结论 40层螺旋CT对冠心病的诊断及病变程度的评估具有较高的准确性、特异性和敏感性,可用于冠心病的初步筛选.     

MR coronary angiography

Coronary MR angiography is a new noninvasive diagnostic method in rapid evolution. It has the potential to combine structural information with functional assessment of coronary blood flow. Advances in technology will undoubtedly lead to enhanced resolution, improved accuracy, and shorter scan times. It is certain that coronary MR angiography will be a prominent diagnostic clinical tool in the years to come.     

64层螺旋CT冠状动脉成像与冠状动脉造影对照研究

目的评价多层螺旋CT(MSCT)与冠状动脉造影对比,诊断冠状动脉中、重度狭窄(即管腔狭窄≥50%)的准确性和局限性。方法选择在1个月内先后行64层螺旋CT和冠状动脉造影检查的28例患者(其中男19例,女9例,年龄39~78岁,平均63.6岁)入组,分析两种检查的诊断结果。结果依节段计算MSCT的准确性,其灵敏度、特异度、阳性预测值和阴性预测值分别为46.5%、97.6%、86.8%和84.3%。若去除其中31个冠脉节段由于严重钙化而影响诊断的因素,则MSCT的诊断灵敏度、特异度、阳性预测值和阴性预测值分别为66.7%、98.6%、90.3%和93.6%。结论MSCT冠状动脉成像是一种简便易行、安全可靠、风险小的无创性检查,对诊断冠心病尤其针对筛选冠心病而言有较好的前景,但也有一定局限性。     

多层螺旋CT冠脉成像与选择性冠脉造影初步探讨

目的评价多层螺旋CT(MSCT)诊断冠状动脉狭窄的可行性和准确性.方法35例临床拟诊冠心病患者行冠状动脉MSCT成像,同时接受选择性冠状动脉造影.分析MSCT图像质量,并与选择性冠状动脉造影相比较.结果以冠状动脉造影结果作为金标准,MSCT诊断狭窄≥50%的敏感度、特异度、阳性预测值、阴性预测值分别为79.4%、95.7%、83.1%、94.6%.结论MSCT能较准确诊断冠状动脉50%以上的狭窄,是无创性诊断冠状动脉狭窄的重要工具.     

Comparison of dual-source ct coronary angiography and conventional coronary angiography for detecting coronary artery disease

To evaluate the diagnostic accuracy of dual-source CT coronary angiography for detecting coronary artery stenosis. From February 2008 to January 2009, dual-source CT coronary CT angiography (DSCT-CCTA) and conventional coronary angiography (CAG) were both performed in 84 patients who had either clinical symptoms or a high risk of coronary artery disease. The diagnostic accuracy of DSCT-CCTA was evaluated by comparing it with that of CAG, which was regarded as the gold standard for making the diagnosis of coronary artery disease. Occlusion or stenosis of various degrees was revealed by DSCT-CCTA in 244 segments of 84 patients. Compared to CAG, segment-based sensitivity, specificity, positive predictive value and negative predictive value of DSCT-CCTA were 97.4, 97.8, 92.2 and 100%, respectively. The diagnostic accuracy of DSCT-CCTA for the detection of coronary artery stenosis was 96.5%. The paired χ2 tests revealed no significant difference between DSCT-CCTA and CAG for making the diagnosis of coronary artery disease (P = 0.076). The diagnostic performance of DSCT-CCTA is generally as accurate as that of CAG. Thus, DSCT-CCTA is a reliable non-invasive method for detecting coronary artery stenosis.     

Non-invasive computed tomography coronary angiography as a gatekeeper for invasive coronary angiography

To determine the rate of subsequent invasive coronary angiography (ICA) and revascularization in relation to computed tomography coronary angiography (CTA) results. In addition, independent determinants of subsequent ICA and revascularization were evaluated. CTA studies were performed using a 64-row (n = 413) or 320-row (n = 224) multidetector scanner. The presence and severity of CAD were determined on CTA. Following CTA, patients were followed up for 1 year for the occurrence of ICA and revascularization. A total of 637 patients (296 male, 56 ± 12 years) were enrolled and 578 CTA investigations were available for analysis. In patients with significant CAD on CTA, subsequent ICA rate was 76  %. Among patients with non-significant CAD on CTA, subsequent ICA rate was 20 % and among patients with normal CTA results, subsequent ICA rate was 5.7 % (p < 0.001). Of patients with significant CAD on CTA, revascularization rate was 47 %, as compared to a revascularization rate of 0.6 % in patients with non-significant CAD on CTA and no revascularizations in patients with a normal CTA results (p < 0.001). Significant CAD on CTA and significant three-vessel or left main disease on CTA were identified as the strongest independent predictors of ICA and revascularization. CTA results are strong and independent determinants of subsequent ICA and revascularization. Consequently, CTA has the potential to serve as a gatekeeper for ICA to identify patients who are most likely to benefit from revascularization and exclude patients who can safely avoid ICA.     

冠状动脉造影与多层螺旋CT冠脉成像在心肌桥诊断中的价值

目的：探讨多层螺旋CT冠脉成像（CCTA）与冠状动脉造影（CAG）在心肌桥（M B）诊断中的价值。方法：回顾性分析疑诊冠状动脉疾病的406例均进行CCTA和CAG检查者,两组采用双盲法CCTA和CAG分别独立阅片,由2名有经验的放射科医生与2名有经验的心内科介入医生采用单盲法阅片,经讨论后共同给出诊断。相互参照另一种检查结果后再次阅片,2次检出率,应用χ^2统计分析方法,判断2种方法发现M B有无差异。结果：双盲法CCTA发现M B 19例26段,CAG发现5例5段（P〈0.01）,差异有统计学意义。相互对照后再次评价,CCTA发现M B数量同前,CAG新发现3例,将新检出的3例患者行腺苷负荷核素心肌显像,相应节段心肌出现心肌低灌注,位置与CCTA一致,共检出8例,2种方法差异有统计学意义（P〈0.05）。结论：CCTA对M B和壁冠状动脉显示清晰,较CAG有更高的检出率,容易发现M B,有着特殊的临床诊断价值。     

Low-dose coronary computed tomography angiography using prospective ECG-triggering compared to invasive coronary angiography

To assess the diagnostic accuracy of prospective ECG-triggering 64-slice multidetector computed tomography (MDCT) coronary angiography for evaluation of coronary artery disease (CAD). Forty-two patients (31 males, 11 females, mean age 64 years) underwent cardiac CT and invasive coronary angiography (ICA). Patients with a heart rate of <65 beats/min with stable heart rhythm were included in the study sample. We used a prospective ECG-triggering protocol. Luminal narrowing over 50% was considered to be significant according to a modified 17-segment AHA model, using invasive coronary angiography (ICA) as the standard of reference. The mean radiation dose was 3.5 mSv ± 0.3 (range, 3.3–4.2 mSv), and 542 of 549 segments (98.7%) in the 42 patients were diagnostic. In contrast, 119 of 542 segments (22%) were diagnosed as significant by ICA. The sensitivity, specificity, accuracy, PPV and NPV were 95.0, 96.2, 96, 85.8 and 98.8%, respectively. False positive results were affected by densely calcified plaques, whereas false negatives were caused by motion artifact with poor vessel attenuation at the distal segments or near the bifurcation area of the coronary arteries. Prospective ECG-triggering MDCT is a useful method for evaluating CAD in patients with a lower heart rate with low radiation dose.     

冠状动脉造影100例的护理

目的 评价冠脉造影术前、中、后进行合理有效的护理措施,观察术后并发症的发生、患者舒适度的变化.方法 分析100例患者冠脉造影术的围手术期临床护理以及预后.结果 在冠脉造影术围手术期给予积极正确护理措施的患者术后并发症少而轻,或发生并发症后通过行之有效的治疗后,护理预后良好.结论 对冠脉造影术的围手术期进行积极有效的护理...