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
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.