Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Design Example: Underdamped Parallel RLC Circuit

Design Example: Underdamped Parallel RLC Circuit

Consider designing an oscillator circuit, a crucial component in various electronic devices and systems. The objective is to create an oscillator circuit with specific characteristics: a damped natural frequency of 4 kHz and a damping factor of 4 radians per second. To accomplish this, a parallel RLC circuit is employed, known for its ability to sustain oscillations at a resonant frequency. In this case, the damping factor is pivotal in achieving the desired performance.
Starting with a fixed...

Collar Bearings

Collar Bearings

Collar bearings are essential in various machines designed to support axial loads on rotating shafts. Depending on the specific application and requirements, they can be found with single or multiple collars.

Design of Transmission Shafts

Design of Transmission Shafts

The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by reconfiguring the...

Inductance: Solid Cylindrical Conductor

Inductance: Solid Cylindrical Conductor

To calculate the inductance of a solid cylindrical conductor, consider a 1-meter section of a non-magnetic, current-carrying conductor with radius r. Disregarding end effects and assuming uniform current density, Ampere's law helps determine the magnetic field inside the conductor. This law states that the magnetic field intensity H is concentric and constant within the conductor.
Given the uniform current distribution, the magnetic field Hx and flux density Bx inside the conductor are...

Thin-Walled Hollow Shafts

Thin-Walled Hollow Shafts

In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution of...

Three-Winding Transformers

Three-Winding Transformers

Three identical single-phase transformers can be configured to form a three-phase transformer connection, which involves high-voltage and low-voltage windings. The high-voltage windings are denoted by capital letters A-B-C, while the low-voltage windings are labeled with lowercase letters a-b-c, representing their respective phases. This notation helps distinguish between the high and low voltage sides of the transformer.
In the per-unit equivalent circuit of a grounded Y-Y three-phase...

You might also read

Related Articles

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

Sort by

Same author

When it hurts even more: The neural dynamics of pain and interpersonal emotions.

Journal of psychosomatic research·2019

Same author

Resting state cerebral blood flow with arterial spin labeling MRI in developing human brains.

European journal of paediatric neurology : EJPN : official journal of the European Paediatric Neurology Society·2018

Same author

Information Dissemination of Public Health Emergency on Social Networks and Intelligent Computation.

Computational intelligence and neuroscience·2015

Same author

A Virtual Radial Arm Maze for the Study of Multiple Memory Systems in a Functional Magnetic Resonance Imaging Environment.

The international journal of virtual reality : a multimedia publication for professionals·2015

Same author

Changes in corticostriatal connectivity during reinforcement learning in humans.

Human brain mapping·2014

Same author

Improving the spectral resolution and spectral fitting of (1) H MRSI data from human calf muscle by the SPREAD technique.

NMR in biomedicine·2014

Search research articles

Related Experiment Video

Updated: Jan 3, 2026

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

Published on: January 16, 2021

Rapid four-ring birdcage coil analysis: Design optimization for high efficiency, low interference, and improved body

Kellsie Shan¹, Yunsuo Duan¹

¹Department of Psychiatry, Columbia University, New York 10032, USA; The New York State Psychiatric Institute, New York 10032, USA.

Magnetic Resonance Imaging

|November 26, 2019

Summary

Accurate magnetic resonance imaging (MRI) coil design is improved using a new finite element method (FEM) modeling strategy. This approach optimizes coil geometries and simulations for better signal-to-noise ratio and image quality.

Keywords:

Body loading effect Boundary condition Coil coupling Coil efficiency Four-ring birdcage coil Meshing density Model geometry Quality factor

More Related Videos

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

Published on: October 10, 2014

Design and Optimization Strategies of a High-Performance Vented Box

Design and Optimization Strategies of a High-Performance Vented Box

Published on: June 9, 2023

Related Experiment Videos

Last Updated: Jan 3, 2026

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

MRM Microcoil Performance Calibration and Usage Demonstrated on Medicago truncatula Roots at 22 T

Published on: January 16, 2021

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions

Published on: October 10, 2014

Design and Optimization Strategies of a High-Performance Vented Box

Design and Optimization Strategies of a High-Performance Vented Box

Published on: June 9, 2023

Area of Science:

Medical Imaging
Electromagnetics
Computational Engineering

Background:

Designing dual-tuned four-ring birdcage coils for MRI systems presents challenges.
Inter-coil interference degrades signal-to-noise ratio (SNR) and magnetic resonance imaging (MRI) image quality.

Purpose of the Study:

To develop an accurate and efficient finite element method (FEM) modeling strategy for MRI birdcage coils.
To optimize FEM modeling parameters including geometry, meshing, and boundary conditions.
To enable sensitivity analysis for guiding coil design optimization.

Main Methods:

Developed an FEM modeling strategy by optimizing model geometries, meshing density, and boundary conditions.
Validated the FEM model against correlated measurements on test vehicles.
Performed sensitivity analysis on critical radiofrequency (RF) characteristics.

Main Results:

The FEM modeling strategy demonstrated accuracy and efficiency.
Sensitivity analysis identified key factors influencing RF characteristics.
Optimized modeling provides guidelines for improved coil design.

Conclusions:

The proposed FEM strategy enhances the accuracy and efficiency of MRI birdcage coil design.
This method facilitates the optimization of RF characteristics, leading to improved MRI performance.
The findings offer valuable insights for the development of superior MRI systems.