A non-contact, optical speckle-tolerant pulsed laser vibrometer successfully detected cardiac signatures through clothing, corroborating with electrocardiography for potential medical diagnostics.
Can an optical speckle-tolerant pulsed laser vibrometer accurately detect cardiac mechanical operations and arrhythmias without physical contact?
A novel non-contact laser vibrometer can detect detailed cardiac mechanical operations and arrhythmias through clothing, offering potential for non-invasive medical diagnostics.
A non-contact, laser-based technology is deployed to monitor the detailed mechanical operations of the various chambers and valves of the heart. The high sensitivity, optical speckle-tolerant laser technology enables cardiac signature detection from the skin vascular network at all locations throughout the patient’s body surface, even in the presence of light-blocking surface coverage such as clothing and shoes. In experiments, observed signal features are identified with specific cardiac activity and corroborated with other modalities including electrocardiography. To demonstrate applicability, cardiac monitoring signals were obtained from patients with widely varying ethnical backgrounds. Abnormal signal from one patient exhibiting sinus arrhythmic symptoms was collected and analyzed, indicating the technology’s potential for medical diagnostics.
Wang et al. (Tue,) conducted a other in Cardiac monitoring. Optical speckle-tolerant pulsed laser vibrometer vs. Electrocardiography was evaluated on Cardiac signature detection. A non-contact, optical speckle-tolerant pulsed laser vibrometer successfully detected cardiac signatures through clothing, corroborating with electrocardiography for potential medical diagnostics.