Imaging Effect and Accuracy Analysis of 64-Slice Spiral CT in the Diagnosis of Coronary Artery Stenosis

Objective:To analyze the imaging effect and accuracy of 64-slice spiral CT in the diagnosis of coronary artery stenosis.Methods:30 patients with suspected coronary heart disease admitted to our hospital from March 2022 to March 2023 were selected.All patients underwent both 64-slice spiral CT and digital subtraction angiography(DSA).DSA is considered the gold standard for diagnosis,so it was used to analyze the diagnostic performance of 64-slice spiral CT.Results:(1)The diagnostic results of digital subtraction angiography and 64-slice spiral CT was analyzed and compared with each other.The 64-slice spiral CT had an accuracy of 96.67%(29/30),a sensitivity 96.55%(28/29),and a specificity of 100.00%(1/1)in diagnosing coronary artery stenosis.(2)There was no significant difference between 64-slice spiral CT and digital subtraction angiography in the positive detection rate of anterior descending artery lesion,the positive detection rate of left main lesion,the positive detection rate of left circumflex artery lesion and the positive detection rate of right coronary artery lesion(P>0.05).(3)There was no significant difference between 64-slice spiral CT examination and DSA examination in identifying mild stenosis,moderate stenosis,and severe stenosis of coronary arteries(P>0.05).Conclusion:64-slice spiral CT examination can accurately determine the degree of occlusion of coronary arteries,which allows for the accurate diagnosis of coronary artery stenosis.

Clinical Effect of Magnetic Resonance Imaging and 64-slice Spiral CT in the Diagnosis of Ischemic Heart Disease Patients

Objective:To explore the clinical methods and clinical effects of applying magnetic resonance imaging(MRI)and 64・slice spiral computed tomography(CT)in the diagnosis of patients with ischemic heart disease.Methods:100 patients with ischemic heart disease were selected as the research objects.Selecting the patients from May 2020 to May 2021 as a sample,the patients were divided into two groups,and different diagnostic methods were used to compare the clinical diagnosis effects.Results:In terms of the diagnostic accuracy of the two groups of patients,the maximum value was 92.00%(experimental group)and the minimum value was 80.00%(control group).There was a big difference in data between the two groups,P<0.05,which was statistically significant.The patient9s(experimental group)diagnosis accuracy rate is highe Conclusion:In the process of research work for patients with ischemic heart disease,it is particularly important to diagnose the patients.The combined application of and 64-slice spiral CT can improve the clinical diagnosis efficiency and achieve significant results.

64层螺旋CT冠状动脉成像与冠脉造影对冠心病诊断的对比研究

目的:探讨64层螺旋CT冠状动脉造影检查对冠状动脉疾病的诊断价值。方法:回顾性分析40例经64层螺旋CT冠状动脉成像(CTA)和冠状动脉造影(CAG)检查拟诊为冠心病的图像资料。结果:64层螺旋CT所显示的382支冠状动脉中狭窄35处,确诊30处,漏诊3处和误诊5处;敏感性90.91%,特异性98.56%;阳性预测值85.71%,阴性预测值99.13%,准确率97.90%。结论:64层螺旋CT对冠状动脉疾病的诊断有较高的准确性,是一种安全、可靠和无创的影像学技术,可作为诊断冠心病的一种筛选手段。

双低剂量在64排CT头颅血管成像应用中的可行性探讨

目的探讨低辐射剂量联合低对比剂剂量在64排CT头颅血管成像中的应用。方法 80例头颅CT血管造影(CTA)检查者,随机分成两组,各40例,分别采用常规方案和低辐射剂量联合低对比剂剂量方案行头颅CTA检查。结果两组方案的对比剂用量和不同辐射剂量差异具有统计学意义(P<0.05);所得图像质量比较差异无统计学意义(P>0.05)。结论双低剂量组显著减少了受检患者的对比剂用量和辐射的剂量,减少了辐射伤害和对比剂的潜在危害,具有较大的临床应用价值。

Efficacy of high resolution computed tomography for detection of early healing in scaphoid fractures

Background: While plain radiography is commonly used to assess scaphoid fracture, this imaging modality may not accurately demonstrate early bone healing. This investigation evaluates the utility of 64-slice CT in the detection of early fracture healing compared to plain radiographs and magnetic resonance imaging (MRI). Methods: Outpatients attending follow-up visits for scaphoid fractures at Hamilton General Hospital were included in this investigation. Inclusion criteria included outpatients over age of 18 who consented to attend a follow-up visit for the scaphoid fracture at 6 weeks for X-Ray, 64-slice CT and MRI scan to monitor fracture healing. Assessment of healing was independently interpreted by two radiologists specialized in musculoskeletal imaging. A total of 7 adult outpatients were accrued, with each case classified as healing, not healing, or equivocal for plain radiography and 64-slice CT scan. Results: For plain radiographs, the level of interrater agreement for evidence of healing was 57% (4/7) cases. When comparing this to CT scans, there was no discrepancy between radiologists as 100% (7/7) were found to have evidence of healing. The 64-slice CT scan demonstrated evidence of early trabecular continuity in all cases, including radiographs that were interpreted as equivocal. Conclusion: This study can be considered a pilot project for the efficacy of 64-slice CT in the assessment of early healing of scaphoid fractures. For clinicians, the multiplanar reconstruction images allows for more accurate assessment of fractures than plain radiography. CT scans are able to penetrate through bony callus that may obscure visualization of healing in plain radiography, demonstrate trabecular continuity better than plain radiographs, are readily accessible and provide faster imaging acquisition. The observations from this study may have implications in terms of duration and type of casting applied, timing of strengthening exercises, and avoiding unnecessary surgery which affect patient morbidity and cost of care.

128层螺旋CT冠脉成像与选择性冠脉造影在冠心病诊断中的应用价值比较分析

目的 :探讨128层螺旋CT冠脉成像与选择性冠脉造影在冠心病诊断中的应用价值并比较分析。方法 :回顾分析2013年10月~2014年4月在我院进行128层螺旋CT冠脉成像(MSCTA)又行选择性冠脉造影术(SCA)的92例冠心病患者的影像学资料,将128层螺旋CT冠脉成像结果与选择性冠脉造影结果进行比较,评价其敏感性和特异性。结果 :92例冠心病患者共分析682个血管节段,其中128层螺旋CT冠脉成像对左冠主干诊断的灵敏度和特异度为100%,左前降支近段为97.4%和97.4%,右冠远段为85.7%和97.1%,对钙化的诊断优于选择性冠脉造影。结论 :64排128层螺旋CT冠脉成像对冠心病诊断有较高的准确性,安全性,可以作为诊断和筛查冠心病的优选检查方法。