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English to Greek translations [PRO] Medical - Medical: Instruments / MR system
English term or phrase:overscan
With Fractional NEX Optimization on, the echoes that would normally be discarded are now acquired and used to increase the number of ***overscans***and the minimum TE, thus increasing the SNR and the T2-weighting.
If a TE less than a Minimum Full is selected, the system collects the minimum lines of k-space (65% of k-space) plus a required number of ***overscans***.
Definition of: overscan
A signal that reaches beyond the viewing area of a display screen. A slight overscan is generally not noticeable on a TV set, but is apparent on a computer monitor where taskbars are typically at the extreme ends of the viewing area.
Some HDTVs have a slight overscan of approximately 4-6%, and signals sent from a PC to an HDTV set may also overscan if not adjusted correctly. When the zoom mode in an HDTV set is selected to fill the sides of the wide screen, it creates the effect of an extreme overscan, although intentional.