Abstract #1952

Impact of Field Strength and Image Resolution on MRE Stiffness Estimation

Eric Barnhill¹, Jing Guo², Florian Dittmann², Sebastian Hirsch², Michael Perrins³, Lucy Hiscox³, Tim Herrmann⁴, Johannes Bernarding⁴, Neil Roberts³, Jürgen Braun¹, and Ingolf Sack²

¹Institute of Medical Informatics, Charité Universitätsmedizin Berlin, Berlin, Germany, ²Department of Radiology, Charité Universitätsmedizin Berlin, Berlin, Germany, ³Clinical Research Imaging Centre, The University of Edinburgh, Edinburgh, United Kingdom, ⁴Institute for Biometrics and Medical Informatics, Otto von Guericke University Magdeburg, Magdeburg, Germany

We investigated the impact of field strength and image resolution on brain MRE stiffness results. A cohort of 18 healthy volunteer subjects was scanned at 1.5T (2mm isotropic voxels), 3T (2mm) and 7T (1mm), with a fourth set downsampling the 7T to 2mm. Means were 1634 Pa (+/-613) for 1.5T, 1743 Pa (+/-811) for 3T, 1786 (+/-634) Pa for 7T 2mm, and 927 (+/-364) Pa for 7T 1mm. In the paired sign-rank tests, there were no significant effects for field strength. Examination of histograms of example slices suggests that a different distribution of features is being captured at the higher resolution.

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.