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

Orthogonal Trajectories01:26

Orthogonal Trajectories

67
Orthogonal trajectories describe the geometric relationship between two families of curves that intersect each other at right angles. One illustrative case involves a family of parabolas that open sideways along the x-axis. These curves share a common shape but differ by a scaling parameter, resulting in a set of curves that all pass through the origin and widen at different rates.Determining Orthogonal TrajectoriesTo identify the orthogonal trajectories for these parabolas, the first step...
67
Real Time RT-PCR02:57

Real Time RT-PCR

65.2K
Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...
65.2K
Moment of Inertia about an Arbitrary Axis01:20

Moment of Inertia about an Arbitrary Axis

642
The moment of inertia is typically associated with principal axes, but it can also be computed for any random axis. When an arbitrary axis is under consideration, the moment of inertia is determined by integrating the mass distribution of the object along that specific axis. It is crucial in applications like the design of machinery, where components rotate about various axes, and balance and stability are essential.
In this scenario, the perpendicular distance between the chosen arbitrary axis...
642
Angular Momentum about an Arbitrary Axis01:11

Angular Momentum about an Arbitrary Axis

466
Imagine a rigid body with a mass denoted as 'm', which has its center of mass at point G and is rotating around an inertial reference frame. The angular momentum at an arbitrary point P can be calculated by taking the cross product of the position vector and linear momentum vector for each individual mass element.
The velocity of a mass element comprises its translational velocity and the relative velocity instigated by the body's rotation. Substituting the velocity equation into...
466
Partial Fractions01:28

Partial Fractions

224
A partial fraction is a component of a rational expression represented as the sum of simpler fractions. When a rational function is expressed as a ratio of two polynomials, it can often be decomposed into a sum of fractions whose denominators are simpler polynomials, typically linear or irreducible quadratic factors. This process is called partial fraction decomposition, and it is used to simplify complex expressions for integration, solving equations, or analysis.Partial fraction decomposition...
224
Mixtures of Gases: Dalton's Law of Partial Pressures and Mole Fractions03:03

Mixtures of Gases: Dalton's Law of Partial Pressures and Mole Fractions

44.2K
Unless individual gases chemically react with each other, the individual gases in a mixture of gases do not affect each other’s pressure. Each gas in a mixture exerts the same pressure that it would exert if it were present alone in the container. The pressure exerted by each individual gas in a mixture is called its partial pressure.
44.2K

You might also read

Related Articles

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

Sort by
Same author

The glymphatic system and glioblastoma.

Brain : a journal of neurology·2025
Same author

Ultrafast complex-valued 4D fMRI reveals sleep-induced brain respiratory pulsation changes in both magnitude and phase signals.

NeuroImage·2025
Same author

Brain physiological pulsations are linked to sleep architecture and cognitive performance in older adults.

NeuroImage·2025
Same author

Hubs and interaction: the brain's meta-loop.

Cerebral cortex (New York, N.Y. : 1991)·2025
Same author

Vasomics of the liver.

Gut·2025
Same author

Thermal Threshold for Localized Blood-Brain Barrier Disruption.

IEEE transactions on bio-medical engineering·2025

Related Experiment Video

Updated: Feb 5, 2026

Real-Time fMRI Brain Mapping in Animals
04:05

Real-Time fMRI Brain Mapping in Animals

Published on: September 24, 2020

4.1K

Targeted partial reconstruction for real-time fMRI with arbitrary trajectories.

Bruno Riemenschneider1,2, Pierre LeVan1,2, Jürgen Hennig1,2

  • 1Department of Radiology, Medical Physics, University Medical Center Freiburg, Germany.

Magnetic Resonance in Medicine
|September 20, 2018
PubMed
Summary

A new partial image reconstruction method enables real-time feedback from fMRI data by applying computations to specific regions of interest (ROIs). This approach significantly speeds up processing for high-speed imaging applications.

Keywords:
SENSEfMRInon-Cartesian trajectoriespartial reconstructionreal-time feedback

More Related Videos

Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety
10:51

Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety

Published on: January 20, 2012

21.8K
A Protocol for the Administration of Real-Time fMRI Neurofeedback Training
07:05

A Protocol for the Administration of Real-Time fMRI Neurofeedback Training

Published on: August 24, 2017

11.5K

Related Experiment Videos

Last Updated: Feb 5, 2026

Real-Time fMRI Brain Mapping in Animals
04:05

Real-Time fMRI Brain Mapping in Animals

Published on: September 24, 2020

4.1K
Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety
10:51

Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety

Published on: January 20, 2012

21.8K
A Protocol for the Administration of Real-Time fMRI Neurofeedback Training
07:05

A Protocol for the Administration of Real-Time fMRI Neurofeedback Training

Published on: August 24, 2017

11.5K

Area of Science:

  • Medical Imaging
  • Neuroscience
  • Computational Science

Background:

  • Real-time image reconstruction is crucial for functional feedback in fMRI.
  • Full image reconstruction can be computationally intensive, limiting real-time applications.
  • Existing methods for compartment-wise reconstruction may introduce discrepancies.

Purpose of the Study:

  • To introduce a partial image reconstruction formalism for real-time feedback extraction.
  • To enable targeted extraction of information from arbitrary trajectories.
  • To overcome computational limitations of full real-time image reconstruction.

Main Methods:

  • Developed a partial reconstruction formalism using linear combinations of reconstruction matrix lines.
  • Implemented an incomplete basis change in spatial coordinates for ROI-wise application.
  • Validated the method on high-speed fMRI data, incorporating intravolume dephasing correction and comparing with existing methods.

Main Results:

  • Achieved reconstruction fidelity virtually identical to standard methods with negligible discrepancies.
  • Demonstrated superior performance compared to existing compartment-wise reconstruction methods.
  • Online real-time implementation processed one ROI within 2.8 ms for a 3D whole brain acquisition.

Conclusions:

  • The partial image reconstruction method offers high fidelity and speed.
  • This technique is suitable for real-time functional feedback in demanding fMRI acquisitions.
  • The ROI-wise approach significantly enhances computational efficiency for real-time analysis.