相关实验视频
Updated: May 21, 2025

Semi-automated Optical Heartbeat Analysis of Small Hearts
Published on: September 16, 2009
在实时模式下使用SVM和LSTM模型进行异常心脏声音识别
Moy'awiah A Al-Shannaq1, Areen Nasrawi2, Abed Al-Raouf K Bsoul2
1Faculty of Information Technolgy and Computer Sciences, Yarmouk university, Irbid, Jordan. moyawiah.s@yu.edu.jo.
这项研究引入了一个实时系统,使用数字信号处理和机器学习来分类心脏声音,准确检测正常和异常心声图,并识别特定条件.
科学领域:
- 心脏病学 心脏病学
- 生物医学工程 生物医学工程
- 人工智能的人工智能
背景情况:
- 心血管疾病是全球主要的死亡原因.
- 心脏声音听觉对于诊断至关重要,但主观.
- 自动数字听觉系统提供客观分析.
研究的目的:
- 开发一个实时的心声识别系统.
- 为了将心声图分类为正常或异常.
- 为了识别特定类型的心脏异常.
主要方法:
- 数字信号处理技术包括快速里埃转换,过和双树复杂波纹转换.
- 机器学习算法:用于分类的支持矢量机 (SVM) 和用于异常类型识别的长短记忆 (LSTM) 神经网络.
- 使用了三个数据集:PhysioNet (1395个文件),GitHub (800个文件) 和PASCAL (100个文件),分为心脏周期.
主要成果:
- 正常/异常分类通过SVM实现了高准确度 (高达98.1%).
- 在对多种心声异常进行分类时,LSTM模型表现出极好的准确性 (高达99.5%).
- 一种高效的自动细分方法实现了低错误率和快速的计算时间 (每周期0.04s).
结论:
- 拟议的系统有效地实时分类正常和异常的心脏声音.
- 信号处理和机器学习的整合提高了心血管疾病的诊断准确度.
- 这项技术有可能降低死亡率并改善患者的生活质量.
更多相关视频
10:50Behavioral Determination of Stimulus Pair Discrimination of Auditory Acoustic and Electrical Stimuli Using a Classical Conditioning and Heart-rate Approach
Published on: June 6, 2012
11:54Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface
Published on: May 8, 2021
相关概念视频
Heart Sounds
Auscultation is the process of listening to these internal body sounds using a stethoscope. The heart produces four types of sounds, but only two—S1 and S2—can usually be heard with a stethoscope.
S1, also known as the "lub" sound, is caused by the closure of atrioventricular (A-V)...
Cardiovascular System Abnormal Findings II: Auscultation
Abnormal Heart Sounds
Gallops:
Pulse rhythm
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
Disturbances in Heart Rhythm
Arrhythmias are categorized by their speed, rhythm, and origin. A slow...
Assessment of the Cardiovascular System IV: Auscultation
Normal Heart Sounds
S1 (First Heart Sound)-
S1 is made by the closure of the mitral and tricuspid valves (atrioventricular valves), marking the beginning of systole.
S2 (Second Heart Sound)-
S2 is made by the closure of the aortic and pulmonic valves (semilunar valves), marking the end of the systole.