深度学习模型在心电图分类中的视觉解释:对特征归因方法的全面评估
Jangwon Suh1, Jimyeong Kim1, Soonil Kwon2
1Department of Intelligence and Information, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea.
Computers in biology and medicine
|October 1, 2024
概括
导向Grad-CAM是电心电图 (ECG) 分类的顶级特征归因方法,根据一项大规模研究. 专家证实它能够在心电图数据中识别关键诊断特征.
科学领域:
- 人工智能的人工智能
- 心脏病学 心脏病学
- 医学成像分析 医学成像分析
背景情况:
- 功能归因方法在深度学习中越来越多地用于心电图 (ECG) 分类,以帮助临床理解和模型可靠性.
- 缺乏全面的研究导致了对ECG数据的特征归因方法的选择,而没有清楚地了解它们的适用性.
研究的目的:
- 对十一种用于ECG分类的流行特征归因方法进行大规模评估.
- 确定最有效的特征归因方法,用于分析深度学习模型在ECG数据的背景下.
主要方法:
- 在五个大型ECG数据集上使用ResNet-18模型评估了11种特征归因方法.
- 使用注释数据集进行了自动评估,并与三名心脏专家进行了人类评估.
主要成果:
- 导向Grad-CAM,特别是使用它的绝对值,在评估的方法中表现最好.
- 心脏专家证实,导向Grad-CAM可以识别ECG中的诊断相关的电生理学特征.
结论:
- 导向Grad-CAM是一种非常有效的特征归因方法,用于ECG分类任务.
- 虽然有效,但指导级CAM在17种不同的诊断中表现有所不同,这表明需要对特定疾病进行进一步研究.
相关概念视频
01:28Electrocardiogram Fundamentals
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Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
542
01:24ECG Interpretation of Rhythms
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An electrocardiogram (ECG)graphically represents the heart's electrical activity on ECG paper or a monitor.
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage....
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage....
544
01:29Electrocardiogram
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An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
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01:25Correlation between ECG and Cardiac Cycle
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The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
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