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 Resonance Imaging01:24

Magnetic Resonance Imaging

5.4K
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
5.4K
Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

77
Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...
77

You might also read

Related Articles

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

Sort by
Same author

A Case Report on the Pitfalls in Diagnosing Left Atrial Appendage Thrombus: Lessons From a False-Positive Transesophageal Echocardiography (TEE) in Mitral Valve Surgery.

Cureus·2026
Same author

Refractory Hypoxemia After Left Ventricular Assist Device Implantation: Underestimated Patent Foramen Ovale and Venovenous Extracorporeal Membrane Oxygenation-Associated Sump Effect on Bubble Study.

Journal of cardiothoracic and vascular anesthesia·2026
Same author

Idiopathic Multicentric Castleman's Disease Diagnosed by Pulmonary Histopathology: A Case Report.

Respirology case reports·2026
Same author

Epidural anaesthesia for caesarean delivery in a woman with Fontan circulation and severe thrombocytopaenia.

BMJ case reports·2026
Same author

Clinicopathological and transcriptomic profiles of 101 patients with diffuse large B-cell lymphoma/high-grade B-cell lymphoma with double-hit MYC and BCL2 or BCL6 and triple hit.

Histopathology·2026
Same author

Pulmonary Involvement in ANCA-associated Vasculitis Overlapping with Long-standing Systemic Lupus Erythematosus.

Internal medicine (Tokyo, Japan)·2026
Same journal

RETRACTED: Zhang et al. A Novel Framework for Reconstruction and Imaging of Target Scattering Centers via Wide-Angle Incidence in Radar Networks. <i>Sensors</i> 2025, <i>25</i>, 6802.

Sensors (Basel, Switzerland)·2026
Same journal

Enhancing Unsupervised Multi-Source Domain Adaptation for Person Re-Identification via Mixture of Experts and Graph-Based Relation.

Sensors (Basel, Switzerland)·2026
Same journal

Development of an Instrumented Glove for Palmar Pressure Assessment in Kayakers.

Sensors (Basel, Switzerland)·2026
Same journal

Development and Experimental Validation of an Autonomous IoT-Based Monitoring System for Real-Time Water Quality Assessment in the Amazon River.

Sensors (Basel, Switzerland)·2026
Same journal

Semi-Supervised Adversarial Learning Framework for Controller Area Network Bus Intrusion Detection.

Sensors (Basel, Switzerland)·2026
Same journal

Smart Optimization Method for Safety Signs in Innovative Manufacturing Environments Integrating Industrial Field IoT Sensors and Knowledge Graphs.

Sensors (Basel, Switzerland)·2026
See all related articles

Related Experiment Video

Updated: Aug 13, 2025

Cardiac Magnetic Resonance Imaging at 7 Tesla
09:14

Cardiac Magnetic Resonance Imaging at 7 Tesla

Published on: January 6, 2019

11.6K

Development of Magnetocardiograph without Magnetically Shielded Room Using High-Detectivity TMR Sensors.

Koshi Kurashima1, Makoto Kataoka1, Takafumi Nakano2

  • 1Device & Process Application Development Unit, Research & Development Center, Asahi Kasei Microdevices Corporation, Atsugi AXT Maintower 20F, 3050 Okata, Atsugi 243-0021, Kanagawa, Japan.

Sensors (Basel, Switzerland)
|January 21, 2023
PubMed
Summary
This summary is machine-generated.

A new magnetocardiograph using tunneling magnetoresistance (TMR) sensors achieves high-resolution heart magnetic field mapping without shielded rooms. This breakthrough promises earlier diagnosis of heart disease and better risk management for sudden death from ventricular arrhythmia.

Keywords:
TMR sensorsenvironmental noisemagnetocardiographyprojection operationsignal space separation

More Related Videos

Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse
12:24

Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse

Published on: June 20, 2014

10.0K
Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
06:29

Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques

Published on: June 11, 2019

10.5K

Related Experiment Videos

Last Updated: Aug 13, 2025

Cardiac Magnetic Resonance Imaging at 7 Tesla
09:14

Cardiac Magnetic Resonance Imaging at 7 Tesla

Published on: January 6, 2019

11.6K
Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse
12:24

Noninvasive Assessment of Cardiac Abnormalities in Experimental Autoimmune Myocarditis by Magnetic Resonance Microscopy Imaging in the Mouse

Published on: June 20, 2014

10.0K
Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
06:29

Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques

Published on: June 11, 2019

10.5K

Area of Science:

  • Biomedical Engineering
  • Cardiovascular Diagnostics
  • Sensor Technology

Background:

  • Conventional magnetocardiography (MCG) using superconducting quantum interference devices (SQUIDs) requires costly shielded rooms and cooling.
  • This limits MCG's accessibility for early diagnosis of ischemic heart disease and ventricular arrhythmia.
  • Existing electrocardiographs lack the spatial resolution for advanced cardiac diagnostics.

Purpose of the Study:

  • To develop a room-temperature magnetocardiograph without the need for magnetically shielded rooms.
  • To achieve a heart field detectivity of 1.0 pT using improved tunneling magnetoresistance (TMR) sensors.
  • To reduce environmental and sensor noise through advanced mathematical algorithms.

Main Methods:

  • Manufactured a magnetocardiograph utilizing an array of 288 tunneling magnetoresistance (TMR) sensors.
  • Implemented signal space separation (SSS) mathematical magnetic shielding to reduce environmental noise by -73 dB.
  • Applied digital processing, including signal averaging and projection, to decrease sensor noise by approximately -23 dB.

Main Results:

  • Achieved an average magnetic detectivity of 14.1 pTrms for TMR sensors in uncooled states.
  • Demonstrated a heart magnetic field resolution of 0.99 pTrms in a standard laboratory environment.
  • Produced clear magnetocardiograms and current arrow maps comparable to SQUID-based systems.

Conclusions:

  • The developed TMR-based magnetocardiograph offers high spatial resolution for clear heart magnetic field mapping without shielded rooms.
  • This technology has significant potential for the early diagnosis of ischemic heart disease.
  • It can serve as a valuable tool for managing the risk of sudden death associated with ventricular arrhythmia.