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We performed a proof-of-concept study enrolling subjects with normal and pathologic heart sounds. Heart sound was recorded by auscultation on the skin of the chest wall using three smartphones: Samsung Galaxy S5 and Galaxy S6, and LG G3 . Recorded heart sounds were processed and classified by a diagnostic algorithm using convolutional neural networks.
Heart sound recording was done by researchers who were familiar with the use of the app and understand the principles of cardiac auscultation.
Reference heart sounds were recorded using an electronic stethoscope (3M™ Littmann® Electronic Stethoscope Model 3200). Study devices included Samsung Galaxy S5 (model SM-G900), Galaxy S6 (SM-G920), and LG G3 (LG-F400).
Cardiovascular Physiological Phenomena
Heart sound recording using smartphone application
Seoul National University Bundang Hospital
Korea, Republic of
Seoul National University Hospital
Published on BioPortfolio: 2017-09-06T22:23:21-0400
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Processes and properties of the CARDIOVASCULAR SYSTEM as a whole or of any of its parts.
Biological actions and events that support the functions of the CARDIOVASCULAR SYSTEM.
Methods and procedures for the diagnosis of diseases or dysfunction of the cardiovascular system or its organs or demonstration of their physiological processes.
Graphic registration of the heart sounds picked up as vibrations and transformed by a piezoelectric crystal microphone into a varying electrical output according to the stresses imposed by the sound waves. The electrical output is amplified by a stethograph amplifier and recorded by a device incorporated into the electrocardiograph or by a multichannel recording machine.
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