motion artifact

motion artifact

Blurring of a radiographic image, produced by respiratory, muscular, or other movement of the patient.
References in periodicals archive ?
The Motion Detection feature notifies MRI Technologists if it picks up enough patient musculoskeletal movement to create a potential motion artifact, thus preventing costly rescans.
Indeed, these movements can modify the amount of light detected, creating what is known as motion artifact (MA).
However, motion artifact and signal attenuation due to hemorrhage may cause degradation of the image quality.
(2009) Relevance of motion artifact in electromyography recordings during vibration treatment.
The reasons are the concurrent problems of capacitive measurements, related to the affection of body movements in the form of motion artifact.
Some of the noises that may affect the signals are inherent noise in electronics equipment, ambient noise, motion artifact, ECG artifacts, inherent instability of signal, and crosstalk.
The analog ECG signal with motion artifact and desired signal are given as input in the binary text file format.
There were 845 segments in SCA and 810 segments in DSCT of the coronary artery that could be assessed with the diameters (greater than) 1.5mm, while, 4.14% (35/845) segments could not be evaluated separately for following reasons: 19 segments of motion artifact, 12 segments of dense calcification and 4 segments of negative lumen manifestation.
Gerraty et al., "An improved framework for confound regression and filtering for control of motion artifact in the preprocessing of resting-state functional connectivity data," Neuroimage, vol.
We learned that they did not work well at all in the presence of motion artifact and low perfusion.
Eight MR images out of 174 images (4.6%) were affected by motion artifact. Figure 3 shows typical examples of T1WI and T2*WI.
It can also run multi-lead electrocardiogram (ECG) applications with motion artifact removal or electroencephalogram (EEG) processing.