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相关概念视频

Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...

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相关实验视频

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焦虑意识 迟到 机械激活 检测 网络 为最佳的心脏再同步 治疗 规划

Jiarui Xing1, Shuo Wang2, Amit R Patel2

  • 1Department of Electrical and Computer Engineering, University of Virginia, USA.

Proceedings. IEEE International Symposium on Biomedical Imaging
|September 29, 2025
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概括

这项研究引入了一种新的痕感知网络,用于检测晚期机械激活 (LMA) 区域,这对于心脏再同步治疗 (CRT) 至关重要. 该方法准确地识别LMA,同时避免心肌痕组织的错误阳性,改善CRT规划.

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科学领域:

  • 心血管成像 - 心血管成像
  • 医学图像分析 医学图像分析
  • 计算心脏病学 计算心脏病学

背景情况:

  • 准确识别晚期机械激活 (LMA) 区域对于有效的心脏再同步治疗 (CRT) 引领植入至关重要.
  • 目前用于LMA检测的心脏磁共振 (CMR) 成像方法可能错误地将心肌痕识别为延迟激活,可能会损害CRT结果.
  • 将痕信息整合到LMA检测中对于提高CRT规划精度至关重要.

研究的目的:

  • 开发和验证一个痕意识的LMA检测网络,同时识别心肌痕和LMA区域.
  • 防止痕组织被错误分类为LMA,从而提高LMA映射的准确性.
  • 通过更精确的LMA识别,提高CRT规划的整体有效性.

主要方法:

  • 集成预先训练的痕细分网络 (使用晚期加多增强 - LGE CMRs) 与使用激发回声 (DENSE) CMRs的位移编码的LMA检测网络.
  • 引入了一种新的痕感知损失函数,以惩罚痕区域中错误阳性LMA检测.
  • 具有配对LGE数据或不配对LGE数据的模型训练能力,并且不需要LGE图像的推断,依赖于菌株数据模式.

主要成果:

  • 在患有心肌痕和没有心肌痕的受试者中显著提高了LMA检测准确度.
  • 在推断过程中成功地减轻了潜在痕区域的错误阳性LMA检测.
  • 在有痕和没有痕的场景中验证了模型的有效性,展示了强大的性能.

结论:

  • 拟议的痕迹感知LMA检测网络为CRT识别LMA地区提供了重大进展.
  • 这种方法通过有效地区分痕组织与延迟激活来提高LMA绘图的准确性.
  • 这些发现为改进CRT规划和潜在的更好的患者结果铺平了道路.