IR

(redirected from inversion recovery)
Also found in: Thesaurus, Medical, Legal, Financial, Encyclopedia.

Ir

The symbol for iridium.

IR

abbr.
1. information retrieval
2. infrared
3. Sports injured reserve

ir

the internet domain name for
(Computer Science) Iran

Ir

the chemical symbol for
(Elements & Compounds) iridium

IR

abbreviation for
1. (General Physics) infrared
2. (Government, Politics & Diplomacy) (formerly, in Britain) Inland Revenue
3. (Government, Politics & Diplomacy) Iran (international car registration)

IR

infrared.

Ir

Irish.

Ir


Chem. Symbol.
iridium.

ir-1

,
var. of in- 2 (by assimilation) before r: irradiate.

ir-2

,
var. of in- 3 (by assimilation) before r: irreducible.

Ir.

Ireland.

Ir

The symbol for iridium.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.IR - a heavy brittle metallic element of the platinum groupIr - a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
2.IR - a board of the British government that administers and collects major direct taxes
administrative body, administrative unit - a unit with administrative responsibilities
Britain, Great Britain, U.K., UK, United Kingdom, United Kingdom of Great Britain and Northern Ireland - a monarchy in northwestern Europe occupying most of the British Isles; divided into England and Scotland and Wales and Northern Ireland; `Great Britain' is often used loosely to refer to the United Kingdom
References in periodicals archive ?
The Galan 3T XGO Edition also delivers enhanced cardiac capabilities, including T1 mapping that utilizes MOdified Look-Locker Inversion recovery (MOLLI) sequence and allows providers to acquire a more quantitative characterization of myocardial tissue within a single breath hold.
The LGE sequences used are the segmented double inversion recovery sequence; the phase sensitive inversion recovery (PSIR), or the single shot acquisition.
The mural nodule exhibited low-signal intensity on T1-weighted images [WI, [Figure 1]a and high-signal intensity on T2-WI [Figure 1]b and fluid-attenuated inversion recovery images.
Fluid-attenuated inversion recovery magnetic resonance imaging showing bilateral temporal and occipital lesions.
A corresponding fluid attenuated inversion recovery (FLAIR) image (FIGURE 1B) shows an abnormal parenchymal signal and hyperintensity in the left occipital lobe, which is the area of the stroke.
Caption: Figure 1: Patient's brain magnetic resonance imaging: (a) diffusion-weighted image, (b) apparent diffusion coefficient map, and (c) fluid attenuated inversion recovery sequence.
A dedicated epilepsy protocol was employed as follows: In addition to routine brain MRI protocol, T1-weighted inversion recovery (TR, 4825 ms; TI, 350 ms; TE, 10 ms; slice thickness, 3 mm; gap, 0.
Magnetic resonance imaging (MRI) of the brain showed diffuse T2/fluid-attenuated inversion recovery hyperintense white matter lesions involving the right frontal, parietal and temporal lobes (Figure 1).
Magnetic resonance imaging (MRI) of the brain confirmed severe periventricular cystic changes around the bodies of the lateral ventricles, and highlighted the presence of two focal lesions in the occipital lobes, with a hypointense centre on T1 weighted and a hyperintense on T2 weighted, and fluid attenuation inversion recovery (FLAIR) images with a rim, mildly hyperintense on T1 and hypointense on T2.
According to the company, the data also showed for the first time that MRI scans with techniques readily available in clinical practice (FLAIR -- fluid attenuation inversion recovery MRI) were a reliable method for measuring brain shrinkage in more than 95% of the study participants.
An appropriate inversion time of fast fluid attenuated inversion recovery made it significant to measure contrast between tissues where signal intensity difference was the smallest and ordinary.
MR imaging of the neck with fatty tissue reveals large irregular areas of T1 weighted hyperintensity that become hypointense on fat suppressed transverse spectral presaturation inversion recovery T1 weighted MR image.