Fat suppression using frequency-sweep RF saturation and iterative reconstruction.

ABSTRACT:

Purpose

To introduce an alternative idea for fat suppression that is suited both for low-field applications where conventional fat-suppression approaches become ineffective due to narrow spectral separation and for applications with strong B0 homogeneities.

Methods

Separation of fat and water is achieved by sweeping the frequency of RF saturation pulses during continuous radial acquisition and calculating frequency-resolved images using regularized iterative reconstruction. Voxel-wise signal-response curves are extracted that reflect tissue's response to RF saturation at different frequencies and allow the classification into fat or water. This information is then utilized to generate water-only composite images. The principle is demonstrated in free-breathing abdominal and

SUBMITTER: Zi R 

PROVIDER: S-EPMC11341250 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature