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   Free Breathing Abdominal Imaging with Fat-Water Separation Using 3D Radial Stack-of-Stars Trajectory  
   
نویسنده ababneh riad s.
منبع jordan journal of physics - 2017 - دوره : 10 - شماره : 1 - صفحه:17 -22
چکیده    In earlier studies of fat-water separation using dynamic imaging applications, the three-dimensional (3d) mri failed to provide high spatial and temporal resolution. this work proposes a fat-water separation strategy in the abdomen during free breathing using the 3d stack-of-stars (sos) radial sampling technique. radial trajectories are less sensitive to motion and have a higher sampling density for the central k-space, allowing for better performance in capturing dynamic information. to this end, a 3d radial truefisp sequence was modified to enable the echo time te to change from projection to projection, where all z-phase encoding was acquired at a single projection angle before switching to the next projection angle. as a result, the fat signal is forced to behave in a specific and easily recognizable fashion over time. using temporal processing, temporal variations imposed on fat signals can be recognized and fat signals can be separated from water signals.
کلیدواژه Fat-water separation ,TrueFISP ,Stack-of-stars ,Free breathing
آدرس yarmouk university, physics department, Jordan
پست الکترونیکی riada@yu.edu.jo
 
     
   
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