inversion recovery


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in·ver·sion re·cov·er·y

a magnetic resonance pulse sequence in which a series of 180° magnetic field inversions is followed by a spin echo sequence for signal detection; of note, during recovery, the longitudinal magnetization vector passes through zero.

inversion recovery (IR)

a magnetic resonance pulse sequence designed to emphasize T1 differences.

inversion recovery

An MRI term for an imaging sequence involving successive 180º and 90º pulses, after which a heavily T1-weighted signal is obtained. The inversion recovery sequence is specified in terms of inversion time (TI), repetition time (TR) and echo time (TE).

inversion recovery

In magnetic resonance imaging, a standard pulse sequence used to produce T1-weighted images.
See also: recovery
References in periodicals archive ?
Doerfler, "The hyperintense acute reperfusion marker on fluid-attenuated inversion recovery magnetic resonance imaging is caused by gadolinium in the cerebrospinal fluid," Stroke, vol.
sup][7],[8] Recommended sequences for MRI of the sacroiliac joint included turbo spin echo (TSE), T1-weighted (T1W) with fat saturation (FS) pre- and post-contrast, short tau inversion recovery (STIR), and diffusion-weighted imaging (DWI).
MRI correlates of pathology in parkinsonism: segmented inversion recovery ratio imaging (SIRRIM).
c) Coronal plane on a short TI inversion recovery (STIR) image.
performed using an inversion recovery prepared echo planar imaging sequence (TR/TE 200/1.
Standard MR imaging protocols for brain tumors include contrast-enhanced T1-weighted and fluid-attenuated inversion recovery (FLAIR) imaging.
This scan sequence is typically a 30-40 mm-thick single shot, turbo spin echo, with long TR (8 000 msec) and long TE (1 000 msec) and spectral presaturation inversion recovery (SPIR) fat suppression.
Arteritis may lead to infarction and subsequent atrophy, as confirmed in unenhanced CT, diffusion weighted, and fluid-attenuated inversion recovery sequences.
When imaging for demyelinating disease, an inversion recovery T1 contrast sequence is most helpful.
Fluid-attenuated inversion recovery showed high signal, and diffusion-weighted imaging showed isointensity.