Jove
Visualize
Contact Us

Related Concept Videos

Estimation of the Physical Quantities01:05

Estimation of the Physical Quantities

4.3K
On many occasions, physicists, other scientists, and engineers need to make estimates of a particular quantity. These are sometimes referred to as guesstimates, order-of-magnitude approximations, back-of-the-envelope calculations, or Fermi calculations. The physicist Enrico Fermi was famous for his ability to estimate various kinds of data with surprising precision. Estimating does not mean guessing a number or a formula at random. Instead, estimation means using prior experience and sound...
4.3K
Pole and System Stability01:24

Pole and System Stability

296
The transfer function is a fundamental concept representing the ratio of two polynomials. The numerator and denominator encapsulate the system's dynamics. The zeros and poles of this transfer function are critical in determining the system's behavior and stability.
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
296
Net Torque Calculations01:19

Net Torque Calculations

9.1K
When a mechanic tries to remove a hex nut with a wrench, it is easier if the force is applied at the farthest end of the wrench handle. The lever arm is the distance from the pivot point (the hex nut in this case) to the person’s hand. If this distance is large, the torque is higher. Only the component of the force perpendicular to the lever arm contributes to the torque. Therefore, pushing the wrench perpendicular to the lever arm is more advantageous. If multiple people apply force to...
9.1K
Rigid Body Equilibrium Problems - I00:49

Rigid Body Equilibrium Problems - I

4.4K
A rigid body is said to be in static equilibrium when the net force and the net torque acting on the system is equal to zero. To solve for rigid body equilibrium problems, do the following steps.
4.4K
Torque Free Motion01:15

Torque Free Motion

482
The torque-free motion refers to the movement of a rigid body in space when no external torques are acting upon it. This type of motion can be observed in environments where there are no external forces or frictions, like in outer space. For example, a rotation of Mars in space is a torque-free motion. Mars is an axisymmetric object, meaning it has an axis of symmetry along which it rotates, designated as the z-axis. The rotating frame of reference is defined such that the center of mass of...
482
Multimachine Stability01:25

Multimachine Stability

153
Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
153

You might also read

Related Articles

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

Sort by
Same author

Ventilation Imaging of the Lung at 0.55T With Continuous Slice Cycling.

Magnetic resonance in medicine·2026
Same author

Fully-Constrained Variable Projection for Water-Fat Models.

Magnetic resonance in medicine·2026
Same author

VQ-Wave: A Physics-Driven Spatiotemporal Deep Learning Approach for Noncontrast-Enhanced Lung Ventilation and Perfusion MRI.

Magnetic resonance in medicine·2026
Same author

Free-Breathing Magnetization Transfer Imaging of the Lung at 0.55 T Using bSTAR.

Magnetic resonance in medicine·2026
Same author

Cine Phase Contrast Magnetic Resonance Imaging of Calf Muscle Contraction in Pediatric Patients with Cerebral Palsy and Healthy Children: Comparison of Voluntary Motion and Electrically Evoked Motion.

Children (Basel, Switzerland)·2026
Same author

Pole-To-Pole 3D Radial Trajectory Designs Improve Image Quality and Quantitative Parametric Mapping in the Brain and Heart.

Magnetic resonance in medicine·2026
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 Experiment Video

Updated: Jul 2, 2025

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease
09:30

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Published on: December 18, 2016

19.6K

Robust T2 estimation with balanced steady state free precession.

Oliver Bieri1,2, Claudia Weidensteiner1,2, Carl Ganter3

  • 1Department of Biomedical Engineering, University of Basel, Allschwil, Switzerland.

Magnetic Resonance in Medicine
|February 27, 2024
PubMed
Summary
This summary is machine-generated.

A new balanced steady state free precession (bSSFP) signal model demonstrates T2 independence from B1 and magnetization transfer (MT) effects. This robust T2 quantification method shows promise for advanced MRI applications.

Keywords:
MRIT2bSSFPbalanced steady‐state free precessionphase‐cyclingrelaxometry

More Related Videos

Measurement of Tumor T2* Relaxation Times after Iron Oxide Nanoparticle Administration
05:30

Measurement of Tumor T2* Relaxation Times after Iron Oxide Nanoparticle Administration

Published on: May 19, 2023

1.3K
Experimental Methods to Study Human Postural Control
08:12

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

9.5K

Related Experiment Videos

Last Updated: Jul 2, 2025

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease
09:30

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Published on: December 18, 2016

19.6K
Measurement of Tumor T2* Relaxation Times after Iron Oxide Nanoparticle Administration
05:30

Measurement of Tumor T2* Relaxation Times after Iron Oxide Nanoparticle Administration

Published on: May 19, 2023

1.3K
Experimental Methods to Study Human Postural Control
08:12

Experimental Methods to Study Human Postural Control

Published on: September 11, 2019

9.5K

Area of Science:

  • Magnetic Resonance Imaging
  • Biophysics

Background:

  • Balanced steady state free precession (bSSFP) is a widely used MRI technique.
  • Accurate T2 quantification is crucial for various diagnostic applications.
  • B1 field inhomogeneity and magnetization transfer (MT) effects can introduce errors in T2 measurements.

Purpose of the Study:

  • To develop a novel signal representation for bSSFP.
  • To demonstrate the independence of T2 quantification from B1 and MT effects.
  • To establish a robust method for T2 measurement in bSSFP imaging.

Main Methods:

  • A new bSSFP signal model was developed, explicitly dependent on T2 and a novel parameter c.
  • Magnetization transfer effects were incorporated by redefining T1 and E1.
  • Phase-cycled bSSFP brain scans were acquired at 3T with varying parameters.
  • T2 and c were estimated using the Variable Projection (VARPRO) method.
  • Monte-Carlo simulations assessed T2 estimation precision.

Main Results:

  • The developed model confirmed T2 independence from TR, flip angle, B1 inhomogeneity, and RF pulse duration.
  • Variations in protocol settings primarily affected the estimation of parameter c, not T2.
  • Initial experiments validated the theoretical predictions.

Conclusions:

  • The novel bSSFP signal model offers T2 quantification independent of B1 and MT effects.
  • This approach presents a potentially robust methodology for accurate T2 measurement.
  • Further validation against existing standards is recommended.