fat suppression


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fat suppression

An MRI term for the process of utilising specific parameters (e.g., STIR (short TI inversion recovery) sequences) to remove the noise caused by fat from the images.

fat suppression

In magnetic resonance imaging, the dampening of bright signals given off by body fat to allow other tissues to become more visible.
See also: suppression
References in periodicals archive ?
5T Dedicated Breast MRI System, coupled with a patented fat suppression pulse sequence technology called RODEO(R), Aurora becomes the only commercially available MRI system designed specifically to image the breast.
T1-weighted, T2 with fat suppression or STIR, and contrast-enhanced T1 fat-saturated images are obtained in precisely the same plane of orientation and using the same imaging parameters in terms of slice thickness, FOV and location.
Although many investigators believe that signals from fat must be suppressed or eliminated, all fat suppression techniques have technical problems associated with them; therefore, it may be desirable to use techniques for which fat suppression is not an issue.
Aurora's proprietary magnet system allows the imaging of both breasts as well as the chest wall and lymph nodes simultaneously, and also makes reliable bi-lateral fat suppression possible.
Axial fat-suppressed gadolinium enhanced spin echo T1-weighted imaging of the wrist show fat suppression and poor contrast enhancement (C, Blue arrow) On sagittal scan give spaghetti-like appearance of enlarged median nerve (white arrowB)
Further improvements in MRE may be expected through refinements in fat suppression, which is achievable using multi-echo Dixon 3D GRE, or DWI techniques, for quantitative assessment of edema and inflammation, markers of disease activity.
These findings correlate very well with Jain KA Jeffery RB JR (1994) who concluded that MRI is superior in detection and differentiation of haemorrhagic masses from the dermoids (fat containing masses) when fat suppression technique was used.
3,4) Fat suppression helps to highlight marrow edema and cystic changes underlying cartilage lesions and to eliminate chemical shift artifact seen at the marrow (fat)-cartilage (water) interfaces.
Harms, MD and Aurora Medical Director commented: "With conventional MRI systems fat suppression and magnetization transfer contrast requires multiple complex pulses that are time consuming and prone to artifact generation.
Chemical shift imaging is of special value and encompasses different techniques such as moderate T2W FSE with fat suppression (STIR), in-phase and opposed-phase gradient echo images, and fast multiplanar T1W spoiled gradient echo fat suppressed sequences.
Inversion Recovery EPI-DWI capability with fat suppression for
The routine use of fat suppression sequences may provide additional information.