首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Multi-frequency interpolation in spiral magnetic resonance fingerprinting for correction of off-resonance blurring
Institution:1. Vanderbilt University Institute of Imaging Science, Nashville, TN 37232, USA;2. Chemical and Physical Biology Program, Vanderbilt University, Nashville, TN 37232, USA;3. Imaging Research, Barrow Neurological Institute, Phoenix, AZ 85013, USA;4. Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN 37232, USA;5. Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232, USA;1. Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan;2. Medical Physics, Department of Radiology, University Medical Center Freiburg, Freiburg, Germany;3. Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan;4. Department of Radiology, University of Cambridge, Cambridge, United Kingdom;5. Department of Computer Science and Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan
Abstract:Magnetic resonance fingerprinting (MRF) pulse sequences often employ spiral trajectories for data readout. Spiral k-space acquisitions are vulnerable to blurring in the spatial domain in the presence of static field off-resonance. This work describes a blurring correction algorithm for use in spiral MRF and demonstrates its effectiveness in phantom and in vivo experiments. Results show that image quality of T1 and T2 parametric maps is improved by application of this correction. This MRF correction has negligible effect on the concordance correlation coefficient and improves coefficient of variation in regions of off-resonance relative to uncorrected measurements.
Keywords:
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号