motion artifact

motion artifact

Blurring of a radiographic image, produced by respiratory, muscular, or other movement of the patient.
References in periodicals archive ?
2009) Relevance of motion artifact in electromyography recordings during vibration treatment.
Reduction of thoracic aorta motion artifact with high-pitch 128-slice dual-source computed tomographic angiography: a historical control study.
1, 15) Furthermore, with radial acquisition, extensive signal averaging due to the overlapping nature of the k-space lines helps to substantially decrease the appearance of motion artifact.
This position is not easy to keep and can induce motion artifact, which affects the quality of images, especially under the condition of long examination time in young subjects such as this study (acquisition times of T1 and T2*WI was 4min48sec and 5min48sec, respectively).
Ultrasound is the modality of choice to assess the fetal heart, but even with 3-D ultrasound, the rapid beating of the fetal heart can result in motion artifact.
Studies have shown that false alarms stemming from motion artifact, as well as the inability of conventional oximeters to provide physiological data during emergent events, have led to the misnomer that pulse oximeters are unreliable.
Motion artifact is seen as blurring caused by patient movement.
This is slower than the cath lab, but fast enough that the images are free of motion artifact.
Used with the recently released BIS Pediatric Sensor or BIS Sensor XP, the new BIS XP monitoring systems offer increased resistance to electrocautery artifact, enhanced performance in deep anesthetic states, and improved robustness to interference from noise sources, such as high-frequency motion artifact which occurs in the operating room and intensive care unit.
NYSE: INVN) has launched motion artifact correction and heart rate variation platform solutions for Photoplethysmography sensors, the company said on Wednesday.
Comparing the PSD of the two signals, the ratio [gamma] was found to be higher in the motion artifact contaminated signal ([gamma] = 0.