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10 Nov 2023 · Aliasing on MRI is a common artifact that occurs when the field of view is smaller than the body part being imaged. It causes the part beyond the edge of the FOV to wrap around and appear on the opposite side of the image. Learn how to correct aliasing on MRI with oversampling, pre-saturation, anti-aliasing software and other methods.
Learn what aliasing is and how it affects MRI signal measurement and image quality. Find out how aliasing causes phase wrap-around, contaminates spectra, and affects flow measurements.
8 Jun 2024 · Aliasing is a phenomenon inherent to Doppler modalities which utilize intermittent sampling in which an insufficient sampling rate results in an inability to record direction and velocity accurately.
23 Mac 2023 · Learn about aliasing artifact, an error in CT image digitization caused by insufficient sampling of the analog signal. See the appearance, causes and quiz questions of this artifact.
Aliasing or wrap-around is a spatial mismapping of signals outside the FOV to the opposite side of the image. Learn how it occurs in the phase-encode direction and how to overcome it with different methods.
Aliasing can be caused either by the sampling stage or the reconstruction stage; these may be distinguished by calling sampling aliasing prealiasing and reconstruction aliasing postaliasing. [1] Temporal aliasing is a major concern in the sampling of video and audio signals.
Learn what causes aliasing or wrap-around artifact in MRI and how to minimize or avoid it. Find out the strategies, such as increasing FOV, adjusting phase-encoding direction, oversampling, using saturation bands and surface coils.
