aliasing artifact

aliasing artifact

In MRI, superimposition of a tissue image from outside the field of view on the opposite side of the desired image, usually in the phase-encode direction, due to an inadequate number of phase-encoding measurements for the size of the field of view. Inadequate sampling in the frequency-encoding direction can also cause wraparound or aliasing, but this finding is less common with modern MR equipment.
Synonym(s): wraparound artifact
[L. alias, otherwise, fr. alius, other]
References in periodicals archive ?
The result is a stunningly detailed image with minimal aliasing artifacts found in standard HD displays.
ColorSharp may be also used to convert between resolutions, including a resolution decrease, a resolution increase, or resolutions very close to each other, without creating the moire and aliasing artifacts usually associated with such resolution conversion.
First, conventional color frame rates are too low to show real arterial hemodynamics, with pathology often masked by aliasing artifacts and second, the pulsed Doppler examination is a separate and time consuming process of searching for the optimal signal.
Up to 8x FSAA dramatically reduces visual aliasing artifacts or "jaggies" at resolutions up to 1920x1200, resulting in highly realistic scenes.
This binning of pixels maintains field of view (FOV) while reducing aliasing artifacts and improving low-light video performance.
3Dlabs SuperScene(TM) antialiasing: True, multisampled scene-mode antialiasing eliminates "stair-step" edges and distracting aliasing artifacts.