Meeting Banner
Abstract #1218

To Investigate the Motion Artifact of Diffusion Weighted MRI in Parotid

Yi-Hsiung Lee1, Yi-Jui Liu2, Hing-Chiu Chang3, Chun-Jung Juan4, Teng-Yi Huang5, Fu-Nien Wang6

1Ph. D. Program of Electrical and Communications Engineering, Feng Chia University, Taichung, Taiwan; 2Department of Automatic Control Engineering, Feng Chia University, Taichung, Taiwan; 3Brain Imaging and Analysis Center, Duke University, Durham, NC, United States; 4Department of Radiology, Tri-Service General Hospital, Taipei, Taiwan; 5Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan; 6Department of Biomedical Engineering and Environmental Sciences College of Nuclear Science, National Tsing Hua University, Hsinchu, Taiwan

The DWI is widly used for diagnostic characterization of head and neck cancers, but inter-experimental comparison of parotid ADC remains difficult because of the wide variation of ADC measurements even in healthy volunteers. Most of studies attributed to the different b values, imaging distortion, chemical shift artifacts and fat content . The signal loss of DWI is often observed in liver study, but it seldom reports in head and neck. Our results demonstrate that the minor motion of mouth was occurred as DWI scan, and it is also an influence factor for ADC measurement in parotid.

Abstract PDF Poster PDF

Keywords

according affected alter although apparent applied approximately around array artifact artifacts attributed automatic automatically avoided behaviors biomedical body brain breathing bulk cancer cancers cardiac cause caused characterization chemical clinical common communications computed content control decay decreased described design deviation diagnostic diffusion displays distortion drawn drop duke electrical engineering enlarged environmental error errors especially evaluate evaluated even evolution examination example experiment finally general generally generate generated gradient gradients head healthy human indicate indicates intensities investigate investigated investigating irregular lips loss major maps matrix mimic molecular motion mouth national neck next noise nuclear onset outlined overestimate overestimated partial participants percentage physiology pixel planar plays presumably previous program prominent radiology rapid real reasonable reduced referred regarded rejected related remain repeated repetitions reported respectively rest science sciences selected sensitivity sensitizing service sets significantly slices smaller software stable static strengths studies swallow system systematically technology thoroughly treatment twisted typical underwent variations void volunteers water whole wide