Abstract #4811

The Influences of Reconstruction Methods and Number of Blades on ADC Repeatability in Free-breathing Liver DW-PROPELLER-EPI

Qting Wu¹, Liyuan Liang^1,2, Hailin Xiong¹, Lu Wang³, Yi-Jui Liu⁴, Chang-Hsien Liu⁵, Chun-Jung Juan^5,6, Hsiao‐Wen Chung⁷, and Hing-Chiu Chang^1,2

¹Department of Biomedical Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong, ²Multi-Scale Medical Robotics Center, Shatin, Hong Kong, ³Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, ⁴Department of Automatic Control Engineering, Feng Chia University, Taichung, Taiwan, ⁵Department of Medical Imaging, China Medical University Hsinchu Hospital and China Medical University, Hsinchu, Taiwan, ⁶Department of Computer Science and Information Engineering, National Taiwan University, Taipei, Taiwan, ⁷Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan

Synopsis

Keywords: Diffusion Reconstruction, Liver, Liver DWI, ADC Measurement

Motivation: The imaging factors associated with the improved ADC repeatability in a free-breathing liver DW-PROPELLER-EPI technique remains unclear.

Goal(s): To evaluate the influences of reconstruction methods and the number of blades on ADC repeatability.

Approach: ADC repeatability and SNR were measured in 20 subjects with the data reconstructed at varying numbers of blades using either iterative CORPUSE or conventional PROPELLER-EPI reconstruction method.

Results: Both ADC repeatability and SNR were positively correlated with number of blades. The data produced by iterative CORPUSE method showed less discrepancy in measured ADC values across different numbers of blades used for reconstruction.

Impact: Increasing the number of blades can more significantly improve the ADC repeatability than increasing the SNR, and therefore providing an insight into optimizing the performance of free-breathing liver DW-PROPELLER-EPI.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.