Perfusion vs. Diffusion — What's the Difference?

Perfusion is the passage of fluid through the circulatory system or lymphatic system to an organ or a tissue, usually referring to the delivery of blood to a capillary bed in tissue. Perfusion is measured as the rate at which blood is delivered to tissue, or volume of blood per unit time (blood flow) per unit tissue mass.

Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in concentration.

The passage of blood, a blood substitute, or other fluid through the blood vessels or other natural channels in an organ or tissue

The process of diffusing or the condition of being diffused

The act or an instance of perfusing.

The scattering of incident light by reflection from a rough surface.

The injection of fluid into a blood vessel in order to reach an organ or tissues, usually to supply nutrients and oxygen.

The transmission of light through a translucent material.

The act of perfusing

The spontaneous intermingling of the particles of two or more substances as a result of random thermal motion.

(medicine) The introduction of a drug or nutrients through the bloodstream in order to reach an internal organ or tissues.

The spread of linguistic or cultural practices or innovations within a community or from one community to another.

The act of perfusing.

The act of diffusing or dispersing something, or the property of being diffused or dispersed; dispersion.

Pumping a liquid into an organ or tissue (especially by way of blood vessels)

(physics) The scattering of light by reflection from a rough surface, or by passage through a translucent medium.

(physics) The intermingling of the molecules of a fluid due to random thermal agitation.

The spread of cultural or linguistic practices, or social institutions, in one or more communities.

(marketing) The gradual spread and adoption of goods or services.

Exchange of airborne media between regions in space in an apparently random motion of a small scale.

The movement of water vapor from regions of high concentration (high water vapor pressure) toward regions of lower concentration.

The act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion.

The act of passing by osmosis through animal membranes, as in the distribution of poisons, gases, etc., through the body. Unlike absorption, diffusion may go on after death, that is, after the blood ceases to circulate.

(physics) the process of diffusing; the intermingling of molecules in gases and liquids as a result of random thermal agitation

The spread of social institutions (and myths and skills) from one society to another

The property of being diffused or dispersed

The act of dispersing or diffusing something;