density (redirected from Optical coherence tomography)

density /den·si·ty/ (den´sit-e)

1. the quality of being compact or dense.

2. quantity per unit space, e.g., the mass of matter per unit volume. Symbol d.

3. the degree of darkening of exposed and processed photographic or x-ray film.

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den·si·ty (dns-t)

n.

1. The mass per unit volume of a substance at a specified pressure and temperature.

2. The quantity of something per unit measure, especially per unit length, area, or volume.

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density

[den′sitē]

Etymology: L, densus, thick

1 the amount of mass of a substance in a given volume. The greater the mass in a given volume, the greater the density. See also mass, volume.

2 (in radiology) the degree of x-ray film blackening.

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density [den´sĭ-te]

1. the ratio of the mass of a substance to its volume.

2. the quality of being compact.

3. the quantity of matter in a given space.

4. the quantity of electricity in a given area, volume, or time.

5. the degree of film blackening in an area of a photograph or radiograph.

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density,

n the concentration of matter, measured by mass per unit volume.

density, radiographic,

n the degree of darkening of exposed and processed photographic or radiographic film, expressed as the logarithm of the opacity of a given area of the film.

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density

1. the ratio of the mass of a substance to its volume.

2. the quality of being compact.

3. the quantity of matter in a given space.

4. the quantity of electricity in a given area, volume or time.

5. the degree of film blackening in an area of a photograph or radiograph.

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population density

number of animals per unit of area; important in relation to the rate of spread of disease.

density sampling

see sampling.

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density

An indication of the compactness of a substance. It is expressed as the ratio of the mass of the substance to its unit volume. The common units are g/cm³ and kg/m³. This property is usually given by lens manufacturers, the greater the density of a material, the greater its weight, all other factors being equal.

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density

The amount of a substance per unit volume Imaging 1. The compactness in a scan which reflects the type of tissues seen in CT and MR scans 2. The amount of 'hard' or mineralized tissue in a plain film. See Bone mineral, Current density, Muscle fiber density, Spin density, Vapor density.

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Patient discussion about density.

Q. what are the sources for high density lipoprotein? I have heard that high density lipoprotein is good for heart. What differences does it make in heart’s health and what are the sources for high density lipoprotein?

A. Hi Liam, it is very important that we have high density lipoprotein (HDL) in our body. The fact is that the HDL is formed inside the body. They are known as good cholesterol as they are famous for their protection for heart against the heart diseases. It has been found that Vitamin B3 or Niacin consumption increases the count of HDL. It’s good to cut on the diet having more of saturated fats and oils, which increases the chances of heart attack.