A new heart-sounds gating device for medical imaging

• Published in: IEEE transactions on biomedical engineering Vol. 39; no. 3; pp. 307 - 310
• Main Authors: Groch, M.W., Domnanovich, J.R., Erwin, W.D.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01-03-1992; Institute of Electrical and Electronics Engineers
• Subjects: Biological and medical sciences; Biomedical imaging; Cardiovascular system; Circuits; Electrocardiography; Equipment Design; Filling; Gated Blood-Pool Imaging - instrumentation; Heart; Heart Rate - physiology; Humans; Investigative techniques, diagnostic techniques (general aspects); Logic; Medical diagnostic imaging; Medical sciences; Nuclear medicine; Phonocardiography - methods; Pulse amplifiers; Radionuclide investigations; Reference Values; Stroke Volume - physiology; Timing; Radionuclide study; Human; Heart sound; Cardiovascular disease; Instrumentation; Heart ventricle; Scintigraphy; Experimental study; Synchronization; Medical imagery; Triggering; Phonocardiography; Biomedical engineering
• ISSN: 0018-9294; 1558-2531
• DOI: 10.1109/10.125016

A heart-sounds gating device has been designed and tested which identifies, individually, both the first (S1) and second (S2) heart sound from their timing relationship, providing two trigger points through the cardiac cycle for synchronizing medical images. The gate utilizes dynamically varying timing windows to anticipate the occurrence of S1 and S2. It has been initially applied to nuclear imaging of the cardiac bloodpool, but may be applied to any imaging modality requiring cardiac synchronization.< >