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传统诊断冠心病的“金标准”是冠状动脉造影, 但随着对冠心病病理、生理学机制认识的深入, 仅仅依靠冠状动脉造影诊断和评价冠心病是不够的, 而且不能对患者的预后进行评价, 另外, 冠状动脉造影为有创性检查, 且检查费用较贵。
研究证实, 在冠脉CT血管造影(computed tomography angiography, CTA)图像能够满足冠状动脉管腔评价的情况下, 其诊断冠心病的准确性较高, 可满足冠心病的介入治疗筛选需要[1-2]。但此方法存在缺陷, 如心率及呼吸波动造成图像阶段状伪影、管壁的钙化程度等因素影响冠状动脉的管腔狭窄程度的评估; 并且其仅能提供解剖信息, 对解剖结构改变所造成的心肌病理生理改变无法显示。PET虽然反映心肌功能信息, 但对冠脉多支病变的诊断能力不足, 而冠脉CTA信息恰恰可以弥补这一不足。PET-CT融合技术可以同时提供解剖及功能信息, 二者相互弥补, 取长补短, 大大提高了诊断冠心病的准确性[3]。
PET-CT在冠心病诊断中的临床应用及新进展
New progressand clinicalapplication of PET-CT in coronary artery disease
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摘要: PET-CT对冠心病的诊断、治疗方案的选择及预后的判断等具有重要意义,可无创性诊断冠心病、评估动脉粥样硬化斑块性质、指导冠心病治疗方法的选择与疗效监测、判断预后等。该文介绍PET-CT在冠心病中的临床应用及新进展。
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关键词:
- 冠状动脉疾病 /
- 正电子发射断层显像术 /
- 体层摄影术, X线计算机
Abstract: PET-CT is a useful noninvasive method for the diagnosis of coronary artery disease (CAD), and can assessment the nature of the atherosclerosis plaque.It plays an important role in the diagnosis of CAD and is useful for the selection of surgical approaches, and for the evaluation of prognosis. The clinical application of PET-CTand its new progress are introduced in this paper. -
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