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

The Sense of Self: Reflected Self-Appraisal and Social Comparison02:57

The Sense of Self: Reflected Self-Appraisal and Social Comparison

56.1K
According to Charles Cooley, we base our image on what we think other people see (Cooley 1902). We imagine how we must appear to others, then react to this speculation. We don certain clothes, prepare our hair in a particular manner, wear makeup, use cologne, and the like—all with the notion that our presentation of ourselves is going to affect how others perceive us. We expect a certain reaction, and, if lucky, we get the one we desire and feel good about it. But more than that, Cooley...
56.1K
Accelerators01:17

Accelerators

288
Accelerators in concrete serve as admixtures to speed up the hardening process, enabling the concrete to achieve early strength faster. Although accelerators do not necessarily impact the time it takes concrete to set, they reduce this time in practice. A common accelerator is calcium chloride, which is particularly useful for hastening early strength development in cold weather or for rapid repair jobs that require quick heat generation after mixing.
The effectiveness of calcium chloride can...
288
Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

2.4K
In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
2.4K
Average Acceleration01:30

Average Acceleration

13.7K
The importance of understanding acceleration spans our day-to-day experiences, as well as the vast reaches of outer space and the tiny world of subatomic physics. In everyday conversation, to accelerate means to speed up. For instance, we are familiar with the acceleration of our car; the harder we apply our foot to the gas pedal, the faster we accelerate. The greater the acceleration, the greater the change in velocity over a given time. Acceleration is widely seen in experimental physics. In...
13.7K
Instantaneous Acceleration01:16

Instantaneous Acceleration

23.1K
Acceleration is in the direction of the change in velocity, but it is not always in the direction of motion. When an object slows down, its acceleration is opposite to the direction of its motion. Although commonly referred to as deceleration, this causes confusion in our analysis as deceleration is not a vector, and does not point to a specific direction with respect to a coordinate system. Therefore, the term deceleration is not used. For example, when a subway train slows down, it...
23.1K
Acceleration Vectors01:30

Acceleration Vectors

22.6K
In everyday conversation, accelerating means speeding up. Acceleration is a vector in the same direction as the change in velocity, Δv, therefore the greater the acceleration, the greater the change in velocity over a given time. Since velocity is a vector, it can change in magnitude, direction, or both. Thus acceleration is a change in speed or direction, or both. For example, if a runner traveling at 10 km/h due east slows to a stop, reverses direction, and continues their run at 10 km/h...
22.6K

You might also read

Related Articles

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

Sort by
Same author

Surgical management of tumor-mimicking posteriorly migrated lumbar disc fragment using a quadrant minimally invasive approach: a case report and literature review.

Frontiers in surgery·2026
Same author

Genesis mechanism of iodide and fluoride in groundwater driven by high-salinity in Bohai Bay.

Journal of contaminant hydrology·2026
Same author

Nitrate pollution sources and associated biogeochemical mechanisms in coastal groundwater affected by seawater intrusion using multiple isotopes and source apportionment models.

Marine pollution bulletin·2026
Same author

A High-Resolution VOC Emission Inventory for Gas Stations in a Typical Yangtze River Delta City: Implications for Ozone Formation, Secondary Organic Aerosol Formation, and Health Risks.

Toxics·2026
Same author

High co-occurrence but low heterogeneity of virulence factors and resistance genes in farmland soil.

Journal of environmental sciences (China)·2026
Same author

Mechanoelectrical metamaterials for broad-range, high-sensitivity pressure sensing.

Science (New York, N.Y.)·2026

Related Experiment Video

Updated: Feb 1, 2026

Diffusion Tensor Magnetic Resonance Imaging in Chronic Spinal Cord Compression
07:00

Diffusion Tensor Magnetic Resonance Imaging in Chronic Spinal Cord Compression

Published on: May 7, 2019

9.4K

Accelerating quantitative susceptibility imaging acquisition using compressed sensing.

Nian Wang1,2, Gary Cofer1, Robert J Anderson1

  • 1Department of Radiology, Center for In Vivo Microscopy, Duke University, Durham, NC, United States of America.

Physics in Medicine and Biology
|December 8, 2018
PubMed
Summary

Compressed sensing (CS) accelerates quantitative susceptibility mapping (QSM) MRI in histology. This method reduces scan time without losing significant accuracy in susceptibility values, proving feasible for advanced research.

More Related Videos

Planarian Scrunching as a Quantitative Behavioral Readout for Noxious Stimuli Sensing
10:15

Planarian Scrunching as a Quantitative Behavioral Readout for Noxious Stimuli Sensing

Published on: July 30, 2020

7.6K
Rapid Antimicrobial Susceptibility Testing by Stimulated Raman Scattering Imaging of Deuterium Incorporation in a Single Bacterium
12:08

Rapid Antimicrobial Susceptibility Testing by Stimulated Raman Scattering Imaging of Deuterium Incorporation in a Single Bacterium

Published on: February 14, 2022

3.4K

Related Experiment Videos

Last Updated: Feb 1, 2026

Diffusion Tensor Magnetic Resonance Imaging in Chronic Spinal Cord Compression
07:00

Diffusion Tensor Magnetic Resonance Imaging in Chronic Spinal Cord Compression

Published on: May 7, 2019

9.4K
Planarian Scrunching as a Quantitative Behavioral Readout for Noxious Stimuli Sensing
10:15

Planarian Scrunching as a Quantitative Behavioral Readout for Noxious Stimuli Sensing

Published on: July 30, 2020

7.6K
Rapid Antimicrobial Susceptibility Testing by Stimulated Raman Scattering Imaging of Deuterium Incorporation in a Single Bacterium
12:08

Rapid Antimicrobial Susceptibility Testing by Stimulated Raman Scattering Imaging of Deuterium Incorporation in a Single Bacterium

Published on: February 14, 2022

3.4K

Area of Science:

  • Biomedical Imaging
  • Magnetic Resonance Imaging (MRI)
  • Neuroscience

Background:

  • Quantitative Susceptibility Mapping (QSM) is crucial for MR histology.
  • Accelerating QSM acquisition is needed to reduce scan times.
  • Compressed Sensing (CS) is a potential technique for acceleration.

Purpose of the Study:

  • To assess the feasibility of Compressed Sensing (CS) for accelerating Quantitative Susceptibility Mapping (QSM) in MR histology.
  • To evaluate the impact of CS on QSM accuracy at various acceleration factors (AFs).

Main Methods:

  • A modified 3D gradient echo (GRE) pulse sequence was used at 9.4 T.
  • Undersampling in two phase dimensions was implemented for CS acquisition.
  • QSM was reconstructed using a nonlinear algorithm and calculated with iLSQR, comparing CS data to fully sampled ground truth.

Main Results:

  • Reconstructed QSM preserved essential information with minimal artifacts, even at CS AFs of 8.0 and 16.0.
  • Maximum susceptibility value variations were within 5.8% (control), 9.5% (demyelination), and 8.2% (remyelination) compared to ground truth.
  • CS demonstrated feasibility for high-resolution (22.5 µm³) MR histology.

Conclusions:

  • Compressed Sensing (CS) is a feasible technique for accelerating GRE MRI acquisition in MR histology.
  • CS significantly reduces acquisition time without substantial loss of accuracy in quantitative susceptibility values.
  • This method holds promise for efficient, high-resolution neuroimaging studies.