Meeting Banner
Abstract #3353

Comparison of gradient delay measurement and correction in diffusion-weighted 3D cones imaging in the breast

Judith Zimmermann1, Xuetong Zhou2, Catherine J Moran3, Kalina Jordanova1, Bruce L Daniel1, and Brian A Hargreaves1
1Radiology, Stanford University, Stanford, CA, United States, 2Bioengineering, Stanford University, Stanford, CA, United States, 3Radiology, The Ohio State University, Columbus, OH, United States

Synopsis

Keywords: Artifacts, Diffusion Acquisition, Gradient Delays, Diffusion, Non-Cartesian Imaging, Breast

Motivation: Gradient delay correction must be carefully considered in non-cartesian imaging such as 3D cones to avoid severe artifacts.

Goal(s): To compare in-vivo-based with phantom-based delay measurement and correction in diffusion-weighted 3D cones breast MRI.

Approach: In 88 subjects, two blinded readers quality-ranked reconstructed images of double-echo steady-state diffusion-weighted breast MRI with three-dimensional cones using (i) no correction, (ii) in-vivo-based delay correction, and (iii) phantom-based delay correction.

Results: Reconstructions with in-vivo-based correction were ranked best in only 40% of cases. Reconstructions done with phantom-based correction were ranked best in 89% of cases. Generally, in 94% of cases, correction led to improved image quality.

Impact: In non-cartesian readouts, gradient delays cause artifacts. For diffusion-weighted breast MRI with a 3D cones trajectory, we show that retrospective delay correction based on in-vivo measurements requires further development to be considered a robust method.

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.

Keywords