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Related Concept Videos

Diffusion01:21

Diffusion

6.8K
Diffusion is a type of passive transport. In passive transport, a substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. For example, take the diffusion of substances through the air. When someone opens a perfume bottle in a room filled with people, the perfume is at its highest concentration in the bottle and is at its lowest at the edges of the room. The perfume vapor will diffuse, or spread away, from the...
6.8K
Diffusion01:12

Diffusion

223.3K
Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
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Assessment of Diffusion and Perfusion01:17

Assessment of Diffusion and Perfusion

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Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
1.8K
Protein Diffusion in the Membrane01:24

Protein Diffusion in the Membrane

6.0K
Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...
6.0K
Facilitated Diffusion01:16

Facilitated Diffusion

1.4K
The plasma membrane, a critical structure in cellular biology, houses an array of transporters, or carrier proteins, interspersed within its lipid bilayer. These proteins play a crucial role in solute transport through facilitated diffusion, a form of passive diffusion that uses transporters to move the molecules across the membrane.
In this process, substrates such as organic compounds and ions interact with a transporter on one side, triggering conformational changes in proteins that enable...
1.4K
Passive Diffusion: Overview and Kinetics01:17

Passive Diffusion: Overview and Kinetics

1.5K
Passive diffusion is a critical process that allows small lipophilic drugs to cross the cell membrane along a concentration gradient. This mechanism's efficiency depends on four primary factors: the membrane's surface area, the drug's lipid-water partition coefficient, the concentration gradient, and the membrane's thickness.
When administered orally, drugs establish a substantial concentration gradient between the gastrointestinal (GI) lumen and the bloodstream, expediting...
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Updated: Feb 23, 2026

Visualization of MG53-mediated Cell Membrane Repair Using in vivo and in vitro Systems
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Visualization of MG53-mediated Cell Membrane Repair Using in vivo and in vitro Systems

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Fiberweb: Diffusion Visualization and Processing in the Browser.

Louis-Philippe Ledoux1, Felix C Morency2, Martin Cousineau1,3

  • 1Sherbrooke Connectivity Imaging Lab, Computer Science Department, Faculty of Science, University of SherbrookeSherbrooke, QC, Canada.

Frontiers in Neuroinformatics
|September 5, 2017
PubMed
Summary
This summary is machine-generated.

Fiberweb offers novel browser-based visualization and interaction for diffusion-weighted magnetic resonance imaging (dMRI) and tractography data. This tool enhances medical imaging analysis and neurosurgical navigation on various devices.

Keywords:
WebGLdiffusion MRIinteractionmedical visualizationtractographyweb

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Area of Science:

  • Neuroimaging
  • Medical Visualization
  • Computer Science

Background:

  • Data visualization is crucial for understanding brain structure and function.
  • Existing browser-based medical imaging tools lack efficient data interaction and processing capabilities.
  • Diffusion-weighted magnetic resonance imaging (dMRI) and tractography generate complex datasets requiring advanced visualization methods.

Purpose of the Study:

  • To introduce Fiberweb, a novel browser-based solution for visualizing and interacting with dMRI and tractography data.
  • To leverage WebGL technology for advanced medical imaging visualization within a web environment.
  • To enable efficient data interaction, including streamlines selection and real-time tractography.

Main Methods:

  • Development of Fiberweb, a browser-based platform utilizing WebGL.
  • Implementation of real-time deterministic and probabilistic tractography (RTT) algorithms.
  • Visualization of medical imaging data, including dMRI and tractography.

Main Results:

  • Fiberweb provides efficient data interaction and processing for dMRI and tractography.
  • The novel RTT probabilistic algorithm demonstrates comparable performance to state-of-the-art offline methods.
  • Successful visualization of complex medical imaging datasets is achieved.

Conclusions:

  • Fiberweb significantly advances interactive scientific visualization for medical imaging.
  • The platform offers new possibilities for quality control and neurosurgical navigation on web-based devices.
  • Browser-based medical imaging solutions can support complex data analysis and interaction.