ArticleScientific reports2018
Definition of Fiducial Points in the Normal Seismocardiogram.
Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to 2 registered trials, which are not on this map. Cited by 37 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Validity and Reliability of a Clinical Method for Assessment of Cardiorespiratory Fitness Using Seismocardiography
The Use of Ventriject to Assess V02Max in Patients Admitted to Hospital in the Emergency Surgery Setting
Who cites it
37 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Wearable Sensors for the Monitoring of Maternal Health-A Systematic Review.Sensors (Basel, Switzerland) · 2023Pooled it
- A feasibility study evaluating seismocardiography for the detection of heart failure.PLOS digital health · 2026Article
- Automated measurement of left ventricular ejection time via contactless suprasternal notch laser vibrometry.Scientific reports · 2026Article
- Wearable SENsor to Diagnose and Assess SEverity of Aortic Stenosis (SENSE-AS): A Proof-of-Concept Study.JACC. Advances · 2026Article
- Seismocardiography Pig Hypovolemia Dataset for Signal Quality Indexing and Validated Cardiac Timings.Scientific data · 2026Article
- Multi-site cardiac rhythm monitoring via multi-channel SCG system and exercise-induced physiological analysis.Frontiers in physiology · 2026Article
- Article
- Non-exercise estimation of peak oxygen uptake in patients with ischaemic heart disease and heart failure using seismocardiography.European heart journal. Digital health · 2026Article
- Evaluation of seismocardiography in detecting pre-load changes and cardiovascular disease: a comparative study with transthoracic echocardiography.European heart journal. Digital health · 2025Article
- Article
- Estimation of cardiorespiratory fitness in healthy using seismocardiography.NPJ cardiovascular health · 2025Article
- From video to vital signs: a new method for contactless multichannel seismocardiography.NPJ cardiovascular health · 2025Article
- Deep learning-based beat-to-beat delineation of heart sounds and fiducial points in seismocardiography.Frontiers in digital health · 2025Article
- On the design and development of a handheld electrocardiogram device in a clinical setting.Frontiers in digital health · 2024Article
- A Wavelet-Based Approach for Motion Artifact Reduction in Ambulatory Seismocardiography.IEEE journal of translational engineering in health and medicine · 2024Article
- Validity and reliability of seismocardiography for the estimation of cardiorespiratory fitness.Cardiovascular digital health journal · 2023Article
- Non-contact heart vibration measurement using computer vision-based seismocardiography.Scientific reports · 2023Article
- Synthetic seismocardiogram generation using a transformer-based neural network.Journal of the American Medical Informatics Association : JAMIA · 2023Article
- Heart Rate Variability Analysis on Electrocardiograms, Seismocardiograms and Gyrocardiograms of Healthy Volunteers and Patients with Valvular Heart Diseases.Sensors (Basel, Switzerland) · 2023Article
- The evaluation of seismocardiogram signal pre-processing using hybridized variational mode decomposition method.Biomedical engineering letters · 2022Article
Corrections and comments
- Erratum issued
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The purpose of this work is to define fiducial points in the seismocardiogram (SCG) and to correlate them with physiological events identified in ultrasound images. For 45 healthy subjects the SCG and the electrocardiogram (ECG) were recorded simultaneously at rest. Immediately following the SCG and ECG recordings ultrasound images of the heart were also obtained at rest. For all subjects a mean SCG signal was calculated and all fiducial points (peaks and valleys) were identified and labeled in the same way across all signals. Eight physiologic events, including the valve openings and closings, were annotated from ultrasound as well and the fiducial points were correlated with those physiologic events. A total of 42 SCG signals were used in the data analysis. The smallest mean differences (±SD) between the eight events found in the ultrasound images and the fiducial points, together with their correlation coefficients (r) were: atrial systolic onset: -2 (±16) ms, r = 0.75 (p < 0.001); peak atrial inflow: 13 (±19) ms, r = 0.63 (p < 0.001); mitral valve closure: 4 (±11) ms, r = 0.71 (p < 0.01); aortic valve opening: -3 (±11) ms, r = 0.60 (p < 0.001); peak systolic inflow: 13 (±23) ms, r = 0.42 (p < 0.01); aortic valve closure: -5 (±12) ms, r = 0.94 (p < 0.001); mitral valve opening: -7 (±19) ms, r = 0.87 (p < 0.001) and peak early ventricular filling: -18 (±28 ms), r = 0.79 (p < 0.001). In conclusion eight physiologic events characterizeing the cardiac cycle, are associated with reproducible, well-defined fiducial points in the SCG.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.