Advancing low-field MRI with a universal denoising imaging transformer: Towards fast and high-quality imaging

no code implementations • 30 Apr 2024 • Zheren Zhu, Azaan Rehman, Xiaozhi Cao, Congyu Liao, Yoo Jin Lee, Michael Ohliger, Hui Xue, Yang Yang

Recent developments in low-field (LF) magnetic resonance imaging (MRI) systems present remarkable opportunities for affordable and widespread MRI access.

Sequence adaptive field-imperfection estimation (SAFE): retrospective estimation and correction of $B_1^+$ and $B_0$ inhomogeneities for enhanced MRF quantification

no code implementations • 15 Dec 2023 • Mengze Gao, Xiaozhi Cao, Daniel Abraham, Zihan Zhou, Kawin Setsompop

$B_1^+$ and $B_0$ field-inhomogeneities can significantly reduce accuracy and robustness of MRF's quantitative parameter estimates.

Implicit Representation of GRAPPA Kernels for Fast MRI Reconstruction

no code implementations • 16 Oct 2023 • Daniel Abraham, Mark Nishimura, Xiaozhi Cao, Congyu Liao, Kawin Setsompop

MRI data is acquired in Fourier space/k-space.

MRI Reconstruction

3D-EPI Blip-Up/Down Acquisition (BUDA) with CAIPI and Joint Hankel Structured Low-Rank Reconstruction for Rapid Distortion-Free High-Resolution T2* Mapping

no code implementations • 1 Dec 2022 • Zhifeng Chen, Congyu Liao, Xiaozhi Cao, Benedikt A. Poser, Zhongbiao Xu, Wei-Ching Lo, Manyi Wen, Jaejin Cho, Qiyuan Tian, Yaohui Wang, Yanqiu Feng, Ling Xia, Wufan Chen, Feng Liu, Berkin Bilgic

Purpose: This work aims to develop a novel distortion-free 3D-EPI acquisition and image reconstruction technique for fast and robust, high-resolution, whole-brain imaging as well as quantitative T2* mapping.

Image Reconstruction