Phonocardiography

"Phonocardiography" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.

expand / collapse MeSH information
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.


expand / collapse publications
This graph shows the total number of publications written about "Phonocardiography" by people in this website by year, and whether "Phonocardiography" was a major or minor topic of these publications.
Bar chart showing 6 publications over 4 distinct years, with a maximum of 3 publications in 2006
To see the data from this visualization as text, click here.