Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Magnetic Damping01:17

Magnetic Damping

Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next sampling...
The Spindle Assembly Checkpoint02:19

The Spindle Assembly Checkpoint

The spindle assembly checkpoint is a molecular surveillance mechanism ensuring the fidelity of chromosome segregation during anaphase. The checkpoint monitors the completion of all the prerequisite steps before chromosome segregation to determine whether the segregation process should proceed or be delayed.
Many proteins function together to control the spindle assembly checkpoint. Mutations affecting these proteins may allow cells to proceed into anaphase prematurely, resulting in the...
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences01:20

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and refractory oxide ion...
Vector Algebra: Method of Components01:08

Vector Algebra: Method of Components

It is cumbersome to find the magnitudes of vectors using the parallelogram rule or using the graphical method to perform mathematical operations like addition, subtraction, and multiplication. There are two ways to circumvent this algebraic complexity. One way is to draw the vectors to scale, as in navigation, and read approximate vector lengths and angles (directions) from the graphs. The other way is to use the method of components.
In many applications, the magnitudes and directions of...
Magnetostatic Boundary Conditions01:28

Magnetostatic Boundary Conditions

An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

BRD4 modulates antimicrobial defense via non-canonical NRF2 activation in macrophages to confer protection against sepsis.

PLoS pathogens·2026
Same author

OPM-based fetal magnetocardiography: fetal cardiac time intervals in healthy pregnancies compared to postnatal ECGs.

Archives of gynecology and obstetrics·2026
Same author

Fetal Long QT Syndrome: Case Series and Literature Review With Focus on Multidisciplinary Care Coordination.

Case reports in cardiology·2026
Same author

Nab-paclitaxel inhibits angiogenesis via the CYR61/integrin α<sub>v</sub>β<sub>3</sub> Axis: Exosomal proteomics insights into breast cancer chemoprevention.

Toxicology and applied pharmacology·2026
Same author

Ratio of PTV to normal lung volumes as a dosimetric predictor for lung metrics in peripheral lung SBRT.

Medical dosimetry : official journal of the American Association of Medical Dosimetrists·2025
Same author

Fetal Conduction Disease and Arrhythmia in Ebstein's Anomaly and Tricuspid Valve Dysplasia Assessed by Fetal Magnetocardiography.

Journal of the American Heart Association·2025

Related Experiment Video

Updated: May 31, 2026

Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation
06:56

Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation

Published on: January 7, 2021

Maternal MCG interference cancellation using splined independent component subtraction.

Suhong Yu1, Ronald T Wakai

  • 1Department of Medical Physics, University of Wisconsin, Madison, WI 53706, USA. syu25@wisc.edu

IEEE Transactions on Bio-Medical Engineering
|June 30, 2011
PubMed
Summary
This summary is machine-generated.

Splined independent component subtraction (ICS) minimizes maternal cardiac signal distortion in fetal magnetocardiograms. This novel method preserves fetal P-waves and QRS complexes, improving signal clarity for better analysis.

Related Experiment Videos

Last Updated: May 31, 2026

Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation
06:56

Human Fetal Blood Flow Quantification with Magnetic Resonance Imaging and Motion Compensation

Published on: January 7, 2021

Area of Science:

  • Biomedical Engineering
  • Signal Processing
  • Cardiology

Background:

  • Maternal cardiac interference commonly distorts fetal magnetocardiograms (fMCG) during independent component analysis (ICA).
  • Conventional independent component subtraction (ICS) can distort fetal signals when maternal and fetal subspaces overlap.
  • Existing methods struggle with signal fidelity, particularly affecting fetal P-waves.

Purpose of the Study:

  • To introduce and evaluate a novel splined ICS method for reducing maternal interference in fMCG.
  • To overcome signal distortion issues inherent in conventional ICS.
  • To enhance the accuracy of fetal cardiac signal analysis.

Main Methods:

  • A splining technique was applied to maternal source components, downsampling and interpolating them using cubic splines.
  • Maternal QRS complexes were downsampled less to preserve their bandwidth during interpolation.
  • The modified maternal components were projected back and subtracted from the raw fMCG signal.

Main Results:

  • Conventional ICS adversely affected fetal P-waves in 29% of subjects (correlation < 0.8).
  • Splined ICS demonstrated negligible distortion and improved signal fidelity across all subjects.
  • Splined ICS proved more effective than matched filtering in cases of synchronous maternal and fetal heartbeats, particularly for T-wave interference.

Conclusions:

  • Splined ICS effectively removes maternal cardiac interference from fMCG with minimal distortion.
  • The method preserves crucial fetal cardiac waveform components, enhancing signal quality.
  • This technique offers a significant advancement for accurate fetal cardiac analysis from magnetocardiogram data.