Results 51 to 60 of about 1,500 (190)

Recent Developments in Fabrication Methods and Measurement Schemes for Optically Pumped Magnetic Gradiometers: A Comprehensive Review

Micromachines, 2023
Optically pumped gradiometers have long been utilized in measurement in the International Geomagnetic Reference Field (IGRF). With advancements in technologies such as laser diodes and microfabrication, integrated gradiometers with compact sizes have ...
Haifeng Dong, Hangfei Ye, Min Hu, Zongmin Ma   +3 more
doaj   +1 more source

Adaptive Noise Canceller for Magnetocardiography

, 2011
This paper discusses the use of adaptive noise cancellation in magnetocardiography system within unshielded environment using three algorithms: Least-Mean Squared (LMS) algorithm; normalized LMS (nLMS) algorithm and Genetic Algorithms (GA).
Tiporlini, Valentina, Nguyen, Ngiah, Alameh, Kamal, Valentina Tiporlini, Nghia Nguyen, Kamal Alameh   +5 more
core   +1 more source

The role of magnetocardiography in the diagnosis and efficacy assessment of coronary microvascular dysfunction

Zhongguo Linchuang Yixue
ObjectiveTo explore the non-invasive diagnostic criteria of magnetocardiography (MCG) for coronary microvascular dysfunction (CMVD), and its value in dynamically assessing drug treatment for CMVD.
Jiaqi Ma, Danbo Lu, Zhangwei Chen, Ao Chen, Congcong Pan, Juying Qian, Jianying Ma   +6 more
doaj   +1 more source

Coronary artery disease detection based on photoplethysmography via Gramian angular field transformation and deep learning

Journal of Intelligent Medicine, Volume 2, Issue 4, Page 169-178, December 2025.
Abstract Sudden cardiac death (SCD) remains one of the leading causes of mortality worldwide, with coronary artery disease (CAD) as its predominant underlying condition. However, noninvasive and accessible screening approaches for CAD are still limited.
Zhaoying Li, Tong Wang, Xizi Song, Runnan He, Feng He   +4 more
wiley   +1 more source

1-pT noise fluxgate magnetometer for geomagnetic measurements and unshielded magnetocardiography [PDF]

, 2020
We present the development of a low-noise, fundamental-mode, orthogonal fluxgate magnetometer with four amorphous, annealed ferromagnetic wires. The 1-Hz noise obtained in open-loop and closed-loop is as low as 0.75 and 1.5 pTrms/√Hz, respectively, with ...
Saunderson E., Dressler M., Fourie C., Butta M., Janošek M., Novotný D.   +5 more
core   +1 more source

A Concept for Myocardial Current Density Estimation with Magnetoelectric Sensors

Current Directions in Biomedical Engineering, 2023
In this paper we present a novel noninvasive approach to estimate current densities in the heart from magnetocardiography. The proposed algorithm uses nested optimization to model current densities in equally-sized voxels of myocardial tissue.
Engelhardt Erik, Elzenheimer Eric, Hoffman Johannes, Schmidt Tobias, Zaman Adrian, Frey Norbert, Schmidt Gerhard   +6 more
doaj   +1 more source

Optical Magnetometer Employing Adaptive Noise Cancellation for Unshielded Magnetocardiography

, 2013
This paper demonstrates the concept of an optical magnetometer for magnetocardiography. The magnetometer employs a standard Least-Mean-Squares (LMS) algorithm for heart magnetic field measurement within unshielded environment.
Tiporlini, Valentina, Alameh, Kamal
core   +1 more source

Heart failure during adjuvant therapy for breast cancer: A case report

Malignancy Spectrum, Volume 2, Issue 2, Page 110-115, June 2025.
Cardiotoxicity of HER2‐targeted drugs can lead to reduced ejection fraction, which was reversible with the administration of ARNi and SGLT2i. Optical pumped magnetometer‐magnetocardiography (OPM‐MCG) can act as a safe, accurate, and efficient evaluation tool for cardiotoxicity monitoring in cancer patients.
Huan Zhang, Zhao Ma, Shuwen Yang, Linqi Liu, Shu Zhou, Lanxin Feng, Ran Ran, Wenyang Liu, Chenchen Tu, Xiantao Song, Hongjia Zhang   +10 more
wiley   +1 more source

Optimization of a Magnetometric System for Investigation of Magnetic Signals of Biological Objects

Кібернетика та комп'ютерні технології
Introduction. Registration and analysis of the distribution of the values ??of the parameters of the magnetic field of the heart in the air above the chest (MCG – magnetocardiography) is performed using SQUID magnetometric systems (SQUID ...
Mykhailo Primin, Igor Nedayvoda
doaj   +1 more source

Fetal Atrial Flutter: Electrophysiology and Associations With Rhythms Involving an Accessory Pathway

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2016
BackgroundAtrial flutter (AFl) accounts for up to one third of all fetal tachyarrhythmias and can result in premature delivery, hydrops, and fetal death in 10% of cases; however, the electrophysiology of AFl in utero is virtually unstudied.
Annette Wacker‐Gussmann, Janette F. Strasburger, Sharda Srinivasan, Bettina F. Cuneo, William Lutter, Ronald T. Wakai   +5 more
doaj   +1 more source