使用修改后的等号变换和基于LSTM的掩盖,改善了心脏听觉声音的恢复
Awad Al-Zaben1,2, Amjad Al-Fahoum3, Muhannad Ababneh4
1Biomedical Engineering Department, Engineering Faculty, Hashemite University, Zarqa, Jordan. azaben@yu.edu.jo.
Medical & biological engineering & computing
|April 16, 2024
概括
这项研究引入了一种新的方法,使用修改后的等号变换 (MCT) 和长期短期记忆 (LSTM) 网络来增强心脏听觉信号. 这种方法有效地将心脏声音与噪音分开,提高了远程医疗环境中的诊断准确性.
科学领域:
- 生物医学信号处理
- 心血管诊断心血管诊断服务
- 人工智能在医学中的应用
背景情况:
- 准确的心脏听觉对于诊断心脏病和实现有效的远程医疗至关重要.
- 从背景噪音中区分微妙的心脏声音和低声仍然是一个重大挑战.
研究的目的:
- 开发和验证一种创新的信号处理策略,以提高心脏听觉信号的质量.
- 提高心脏声音分析的准确性和可靠性,特别是在杂的环境中.
主要方法:
- 使用修改后的等号变换 (MCT) 来捕捉心脏声音的特征模式.
- 采用长期短期记忆 (LSTM) 网络来生成用于降低噪声的光谱面罩.
- 使用信号可视化和统计指标评估系统的性能,包括信号噪声比 (SNR) 和信号扭曲比 (SDR).
主要成果:
- 拟议的MCT-LSTM战略显示了SNR的显著改善,在-6dB输入SNR下提高9.6dB,在10dB输入SNR下提高3.3dB.
- 在各种输入SNR中实现了8.56dB的平均信号扭曲比 (SDR).
- 在比较评估中表现优于现有的算法,如LU-Net和PC-DAE.
结论:
- 开发的方法有效地将心脏声音和声与噪音区分开来,保持临床相关性.
- 该系统的适应性和卓越性能凸显了其在推进心血管诊断方面的潜力.
- 这种方法为改善医疗信号处理时代的心脏声音分析提供了可靠的工具.
相关概念视频
01:25Assessment of the Cardiovascular System IV: Auscultation
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Cardiac auscultation is a clinical skill used to assess heart function and detect abnormalities. It involves listening to heart sounds at specific anatomical locations through a stethoscope.
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.
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.
317
01:15Heart Sounds
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Heart sounds are generated by the turbulence in blood flow due to the closing of heart valves. These sounds are best perceived slightly away from the valves, where the blood flow disseminates the sound.
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)...
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)...
1.9K
01:18Aliasing
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Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original...
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original...
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01:25Cardiovascular System Abnormal Findings II: Auscultation
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Auscultation, an essential part of a heart examination, is done using a stethoscope. It provides crucial information about heart function and possible heart problems. Due to heart problems, abnormal sounds can be heard during systole or diastole. These sounds include S3 and S4 gallops, opening snaps, systolic clicks, and murmurs.
Abnormal Heart Sounds
Gallops:
Abnormal Heart Sounds
Gallops:
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