...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Academic radiology >Intraprocedure visualization of the esophagus using interventional C-arm CT as guidance for left atrial radiofrequency ablation.
【24h】

Intraprocedure visualization of the esophagus using interventional C-arm CT as guidance for left atrial radiofrequency ablation.

机译：使用介入性C臂CT作为左心房射频消融的指导，对食道进行术中可视化。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

RATIONALE AND OBJECTIVES: During radiofrequency catheter ablation for atrial fibrillation, the esophagus is at risk for thermal injury. In this study, C-arm computed tomography (CT) was compared to clinical CT, without the administration of oral contrast, to visualize the esophagus and its relationship to the left atrium and the ostia of the pulmonary veins (PVs) during the radiofrequency ablation procedure. MATERIALS AND METHODS: Sixteen subjects underwent both cardiac clinical CT and C-arm CT. Computed tomographic scans were performed on a multidetector scanner using a standard electrocardiographically gated protocol. C-arm computed tomographic scans were obtained using either a multisweep protocol with retrospective electrocardiographic gating or a non-gated single-sweep protocol. C-arm and clinical computed tomographic scans were analyzed in a random order and then compared for the following criteria: (1) visualization of the esophagus (yes or no), (2) relationship of esophageal position to the four PVs, and (3) direct contact or absence of a fat pad between the esophagus and the PV antrum. RESULTS: The esophagus was identified in all C-arm and clinical computed tomographic scans. In four cases, orthogonal planes were needed on C-arm CT (inferior PV level). In six patients, the esophageal location on C-arm CT was different from that on CT. Direct contact was reported in 19 of 64 of the segments (30%) examined on CT and in 26 of 64 (41%) on C-arm CT. In five of 64 segments (8%), C-arm CT overestimated a direct contact of the esophagus to the left atrium. CONCLUSIONS: C-arm computed tomographic image quality without the administration of oral contrast agents was shown to be sufficient for visualization of the esophagus location during a radiofrequency catheter ablation procedure for atrial fibrillation.
机译：理由和目的：在射频导管消融房颤期间，食道有热损伤的危险。在这项研究中，在不进行口服对比的情况下，将C臂计算机断层扫描（CT）与临床CT进行了比较，以可视化食道及其在射频消融过程中与左心房和肺静脉口（PV）的关系。程序。材料与方法：16名受试者均接受了心脏临床CT和C型臂CT检查。使用标准心电门控协议在多探测器扫描仪上进行计算机断层扫描。使用具有回顾性心电门控的多扫描方案或非门控的单扫描方案，可获得C臂计算机断层扫描。对C臂和临床计算机断层扫描进行随机分析，然后比较以下标准：（1）食道的可视化（是或否），（2）食管位置与四个PV的关系，以及（3 ）食道和PV胃窦之间直接接触或没有脂肪垫。结果：在所有的C型臂和临床计算机断层扫描中均发现了食道。在四种情况下，需要在C型臂CT（PV水平较低）上使用正交平面。在6例患者中，C臂CT上的食管位置与CT上不同。在CT检查的64个部分中有19个（30％）和C臂CT的64个中有26个（41％）有直接接触的报道。在64个节段中的五个（8％）中，C型臂CT高估了食道与左心房的直接接触。结论：未进行口服造影剂的C臂计算机断层扫描图像质量已显示出足以在射频消融房颤过程中可视化食道位置。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号