نتایج جستجو برای: heart sounds
تعداد نتایج: 410981 فیلتر نتایج به سال:
BACKGROUND Previous studies have shown that medical students and post-graduate trainees need to improve their proficiency in cardiac auscultation. Technologic advances have created new learner-centered opportunities to enhance proficiency in this important physical examination skill. OBJECTIVES We sought to determine if technology-based, self-directed learning tools improved the cardiac auscu...
This paper considers the problem of classification of the first and the second heart sounds (S1 and S2) under cardiac stress test. The main objective is to classify these sounds without electrocardiogram (ECG) reference and without taking into consideration the systolic and the diastolic time intervals criterion which can become problematic and useless in several real life settings as severe ta...
BACKGROUND In this paper, we developed a novel algorithm to detect the valvular split between the aortic and pulmonary components in the second heart sound which is a valuable medical information. METHODS The algorithm is based on the Reassigned smoothed pseudo Wigner-Ville distribution which is a modified time-frequency distribution of the Wigner-Ville distribution. A preprocessing amplitude...
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