Jul 2026· Magnetic Resonance in Medicine· Vol 96, pp. 2370 - 2380· 0 citations· 48 references
Medicine
TL;DR
A novel model‐based reconstruction approach is proposed to accelerate iEPI DKI acquisition to enable higher resolution diffusion kurtosis imaging compared to single‐shot EPI.
Abstract
While multishot interleaved echo‐planar imaging (iEPI) enables higher resolution diffusion kurtosis imaging (DKI) compared to single‐shot EPI, its clinical application is hindered by the lengthy acquisition time. This study proposes a novel model‐based reconstruction approach to accelerate iEPI DKI acquisition.
To generate 4D (3D+time) images of both the heart and lungs using a single volumetric radial free‐breathing bSSFP dual echo acquisition (bSTAR) with two image reconstructions within a single pipeline deployed inline at 0.55 and 1.5 T.
P. Daudé, Jordan Taylor, Joseph W. Plummer et al.· Magnetic Resonance in Medici...· 0 citations
[18F]F‐AraG (radio‐fluorinated 9‐β‐D‐arabinofuranosylguanine) is a PET radiotracer for imaging T‐cell activation with emerging applications in myocardial imaging. Cardiac PET is particularly susceptible to respiratory motion, which degrades spatial resolution and introduces regional variability in quantitative measurements.
Hannah Kim, Ryan Tang, Uttam M. Shrestha et al.· Medical Physics (Lancaster)· 0 citations
MRI provides essential insights into tissue microstructure, and high angular resolution diffusion imaging (HARDI) enables detailed assessment of complex white matter architecture through fiber orientation distribution (FOD) analysis. However, HARDI requires high b-values and multiple diffusion directions, leading to reduced signal-to-noise ratio (SNR) and long scan times. Conventional zero-fill interpolation processing (ZIP) is widely used for super-resolution but is limited by edge blurring and artifacts. This study evaluated an AI-based reconstruction method, Precise IQ Engine (PIQE). Specifically, low-resolution diffusion data were reconstructed to standard resolution and compared with standard-resolution acquisitions. Ten healthy volunteers underwent HARDI at 3T, and FOD were estimated using constrained spherical deconvolution. Quantitative comparisons with reference data demonstrated that PIQE exhibited higher distributional similarity (lower Jensen–Shannon divergence) and directional agreement (higher angular correlation coefficient) compared with ZIP+Advanced Intelligent Clear-IQ Engine (AiCE), with statistically significant similarity observed. These findings indicate potential usefulness in advanced diffusion MRI applications.
Akihiro Kasahara, Yuichi Suzuki, Kazuki Endo et al.· Radiological Physics and Tec...· 0 citations
An MRI scanner was designed and built to encode k ‐space points in the spin echoes occurring between 180∘ pulses in an echo train by using blipped B0 gradient pulses applied just prior to those spin echoes.
L. Vidarsson, G. Sarty· Magnetic Resonance in Medici...· 0 citations
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