Abstract #2440

Spiral interleaving for diffusion encoding and relaxometry (SPIDER)

Xingwang Yong^1,2,3, Hong-Hsi Lee², Shohei Fujita^2,3,4,5, Yohan Jun^2,3, Jaejin Cho^2,3, Qiang Liu⁶, Tao Zu¹, Yi Zhang¹, and Berkin Bilgic^2,3,7

¹Key Laboratory for Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, College of Biomedical Engineering & Instrument Science, Zhejiang University, Hangzhou, China, ²Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, ³Department of Radiology, Harvard Medical School, Boston, MA, United States, ⁴Department of Radiology, Juntendo University, Tokyo, Japan, ⁵Department of Radiology, The University of Tokyo, Tokyo, Japan, ⁶Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States, ⁷Harvard/MIT Health Sciences and Technology, Cambridge, MA, United States

Synopsis

Keywords: Diffusion Acquisition, Diffusion Tensor Imaging

Motivation: Current diffusion readout methods have a relatively long echo time and readout duration, which prevent multi-echo imaging.

Goal(s): To implement a diffusion sequence with multiple echoes readout for performing diffusion relaxometry.

Approach: A 3-echo diffusion sequence, SPIDER, with variable density spiral readout was designed.

Results: The proposed SPIDER showed comparable images with reference EPI method at shorter echo time.

Impact: The proposed method showed the ability to acquire 3 echoes for 1mm² resolution for low b-value, which could help multi-echo diffusion modeling.

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.