心脏ct哨a检查.pptVIP

5.造影剂使用正确，血管强化理想 冠脉近端到远端强化一致; CT为350-400 HU (Mahnken et al, EJR 2007, 17: 994-1008) 6.使用硝酸甘油(片剂/喷雾) Repeated scan 扫描前喷雾或舌下含 0.5mg硝酸甘油 7.肥胖病人 考虑 增加曝光剂量 提高碘浓度 增加造影剂流速 增加造影剂用量 Maintz et al, EJR 2003, 13:830-835 时相是否正确;重建参数（层厚、间距） 8.图像重建参数: 50% RR 70% RR 重建时相有误 B26 B46 总结 ... 心脏CTA图像不佳，大多是由于 呼吸运动 其它运动:如吞咽动作,震颤等 时相重建错误 异常心跳 ... 谢谢！ * * I would like to give a brief overview of the clinical applications that we are doing today with Cardiac CT. The first application is imaging and quantification of the coronary calcium. The presence of coronary calcium is a marker of coronary artery disease. This has been done in the past with Electron Beam CT and even using X-ray fluoroscopy. The next major application is Cardiac CT Angiography. This is the applications that general a lots of excitement in the medical world of radiology and cardiology for the last 2 years. * I would like to give a brief overview of the clinical applications that we are doing today with Cardiac CT. The first application is imaging and quantification of the coronary calcium. The presence of coronary calcium is a marker of coronary artery disease. This has been done in the past with Electron Beam CT and even using X-ray fluoroscopy. The next major application is Cardiac CT Angiography. This is the applications that general a lots of excitement in the medical world of radiology and cardiology for the last 2 years. * a 3 channel ECG monitor measures between every 3 leads, the 1 channel ECG monitor measures only between 2 leads (3rd is Ground). The best and well known ECG is signal “II“, to get this signal you have to change a little bit the placement of the electrodes / leads. Now, red is only ground. * * * * * 心脏CTA检查技术 心脏成像 一. 临床应用 二.临床操作步骤 三.图像后处理 四.心脏CTA原理 五.影响因素分析 心脏CT造影的临床禁忌症 II~III度房室传导阻滞 严重心律不齐 显著心动过缓病史 失代偿性心功能不全 心源型休克 严重肝、肾功能不良 对含碘造影剂过敏 一. 临床应用 冠脉成像的临床应用——冠状动脉病变 冠状动脉粥样硬化性心脏病（冠心病） 冠状动脉变异 冠状动脉支架放置术后 冠状动脉搭桥术后 1.扫描前的准备 2.造影剂的使用 3.扫描步骤 4.图像重建 二.临床操作步骤