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The electronic stethoscope.

Leng S, Tan RS, Chai KT, Wang C, Ghista D, Zhong L - Biomed Eng Online (2015)

Bottom Line: Most heart diseases are associated with and reflected by the sounds that the heart produces.Our intent is to provide an informative and illustrative presentation of the electronic stethoscope, which is valuable and beneficial to academics, researchers and engineers in the technical field, as well as to medical professionals to facilitate its use clinically.The paper provides the technological and medical basis for the development and commercialization of a real-time integrated heart sound detection, acquisition and quantification system.

View Article: PubMed Central - PubMed

Affiliation: National Heart Research Institute Singapore, National Heart Centre Singapore, 5 Hospital Drive, Singapore, 169609, Singapore. leng.shuang@nhcs.com.sg.

ABSTRACT
Most heart diseases are associated with and reflected by the sounds that the heart produces. Heart auscultation, defined as listening to the heart sound, has been a very important method for the early diagnosis of cardiac dysfunction. Traditional auscultation requires substantial clinical experience and good listening skills. The emergence of the electronic stethoscope has paved the way for a new field of computer-aided auscultation. This article provides an in-depth study of (1) the electronic stethoscope technology, and (2) the methodology for diagnosis of cardiac disorders based on computer-aided auscultation. The paper is based on a comprehensive review of (1) literature articles, (2) market (state-of-the-art) products, and (3) smartphone stethoscope apps. It covers in depth every key component of the computer-aided system with electronic stethoscope, from sensor design, front-end circuitry, denoising algorithm, heart sound segmentation, to the final machine learning techniques. Our intent is to provide an informative and illustrative presentation of the electronic stethoscope, which is valuable and beneficial to academics, researchers and engineers in the technical field, as well as to medical professionals to facilitate its use clinically. The paper provides the technological and medical basis for the development and commercialization of a real-time integrated heart sound detection, acquisition and quantification system.

No MeSH data available.


Related in: MedlinePlus

Envelogram based heart sound segmentation a original signal and its average Shannon energy, b recovering the “lost” peaks, and c identified S1 and S2 and artifacts.
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Fig9: Envelogram based heart sound segmentation a original signal and its average Shannon energy, b recovering the “lost” peaks, and c identified S1 and S2 and artifacts.

Mentions: The direct segmentation methods are well established in the literature, where the cardiac cycle boundary is located based on the HS signal itself without a reference to the ECG. The most famous method of direct segmentation is the envelogram based approach presented in [74] and illustrated in Figure 9, where the following four steps are performed:Figure 9


The electronic stethoscope.

Leng S, Tan RS, Chai KT, Wang C, Ghista D, Zhong L - Biomed Eng Online (2015)

Envelogram based heart sound segmentation a original signal and its average Shannon energy, b recovering the “lost” peaks, and c identified S1 and S2 and artifacts.
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4496820&req=5

Fig9: Envelogram based heart sound segmentation a original signal and its average Shannon energy, b recovering the “lost” peaks, and c identified S1 and S2 and artifacts.
Mentions: The direct segmentation methods are well established in the literature, where the cardiac cycle boundary is located based on the HS signal itself without a reference to the ECG. The most famous method of direct segmentation is the envelogram based approach presented in [74] and illustrated in Figure 9, where the following four steps are performed:Figure 9

Bottom Line: Most heart diseases are associated with and reflected by the sounds that the heart produces.Our intent is to provide an informative and illustrative presentation of the electronic stethoscope, which is valuable and beneficial to academics, researchers and engineers in the technical field, as well as to medical professionals to facilitate its use clinically.The paper provides the technological and medical basis for the development and commercialization of a real-time integrated heart sound detection, acquisition and quantification system.

View Article: PubMed Central - PubMed

Affiliation: National Heart Research Institute Singapore, National Heart Centre Singapore, 5 Hospital Drive, Singapore, 169609, Singapore. leng.shuang@nhcs.com.sg.

ABSTRACT
Most heart diseases are associated with and reflected by the sounds that the heart produces. Heart auscultation, defined as listening to the heart sound, has been a very important method for the early diagnosis of cardiac dysfunction. Traditional auscultation requires substantial clinical experience and good listening skills. The emergence of the electronic stethoscope has paved the way for a new field of computer-aided auscultation. This article provides an in-depth study of (1) the electronic stethoscope technology, and (2) the methodology for diagnosis of cardiac disorders based on computer-aided auscultation. The paper is based on a comprehensive review of (1) literature articles, (2) market (state-of-the-art) products, and (3) smartphone stethoscope apps. It covers in depth every key component of the computer-aided system with electronic stethoscope, from sensor design, front-end circuitry, denoising algorithm, heart sound segmentation, to the final machine learning techniques. Our intent is to provide an informative and illustrative presentation of the electronic stethoscope, which is valuable and beneficial to academics, researchers and engineers in the technical field, as well as to medical professionals to facilitate its use clinically. The paper provides the technological and medical basis for the development and commercialization of a real-time integrated heart sound detection, acquisition and quantification system.

No MeSH data available.


Related in: MedlinePlus