Retrospective respiratory self‐gating and removal of bulk motion in pulmonary UTE MRI of neonates and adults

NS Higano, AD Hahn, JA Tkach, X Cao… - Magnetic resonance …, 2017 - Wiley Online Library
… Cartesian sequences, despite respiratory and bulk motion artifacts 19; this work can be
further refined using UTE MRI. However, neonatal pulmonary MRI faces unique challenges of its …

Iterative motion‐compensation reconstruction ultra‐short TE (iMoCo UTE) for high‐resolution free‐breathing pulmonary MRI

X Zhu, M Chan, M Lustig, KM Johnson… - Magnetic resonance …, 2020 - Wiley Online Library
… the bulk motion of the baby; then, the data corrupted by bulk … In this work, data contaminated
with bulk motion is discarded,… bulk motion or even more complicated irregular motion into …

Lung Imaging with UTE-MRI

P Larson - MRI of Short-and Ultrashort-T2 Tissues: Making the …, 2024 - Springer
… In this example, it should be noted that a dynamic image navigator identified a period of
bulk motion that could be removed to further improve image quality. (Reproduced with …

Generating Motion-and Distortion-Free Local Field Map Using 3D Ultrashort TE MRI: Comparison with T2* Mapping

K Jeong, B Thapa, BS Han, D Kim… - … Magnetic Resonance …, 2019 - synapse.koreamed.org
… In this report, 3D radial ultrashort-TE (UTE) MRI is used for … of us in modern clinical MRI
system for UTE MRI, the resultant … an arbitrary distribution of bulk susceptibility. Concepts Magn …

Self-navigated three-dimensional ultrashort echo time technique for motion-corrected skull MRI

H Lee, X Zhao, HK Song… - IEEE transactions on …, 2020 - ieeexplore.ieee.org
… In the presence of heavy bulk motions, images reconstructed from radial samples are …
motion-corrected skull MRI by means of self-navigated, 3D UTE along with a retrospective motion

Motion‐compensated low‐rank reconstruction for simultaneous structural and functional UTE lung MRI

F Tan, X Zhu, M Chan, MA Zapala… - Magnetic resonance …, 2023 - Wiley Online Library
… did not address bulk motion during the lung MRI scans. Fortunately, bulk motion was not
observed … However, a bulk-motion correction term can be added to the MoCoLoR reconstruction …

Pulmonary MRI of neonates in the intensive care unit using 3D ultrashort echo time and a small footprint MRI system

AD Hahn, NS Higano, LL Walkup… - … Resonance Imaging, 2017 - Wiley Online Library
UTE data acquired during periods of intermittent bulk motion were manually identified and
discarded by inspecting the repeatedly sampled center of k-space (ie, the initial point of the …

Respiratory self‐gated 3 D UTE for lung imaging in small animal MRI

M Tibiletti, A Bianchi, Å Kjørstad… - Magnetic resonance …, 2017 - Wiley Online Library
… In this work, we investigated the feasibility of respiratory self-gated multistage reconstruction
and bulk motion correction from 3D UTE in free-breathing rats using DC-SG and 3D-Img-SG…

Comparison of weighting algorithms to mitigate respiratory motion in free-breathing neonatal pulmonary radial UTE-MRI

DB Gandhi, NS Higano, AD Hahn… - Biomedical Physics …, 2024 - iopscience.iop.org
MRI, using both previously published and novel soft-gated weighting functions and a wide
range of parameters. This study uses pulmonary UTE MRI … , motion blurring due to bulk motion

Functional MRI of the lungs using single breath-hold and self-navigated ultrashort echo time sequences

JF Heidenreich, S Veldhoen, C Metz… - Radiology …, 2020 - pubs.rsna.org
… However, stack-of-spirals breath-hold UTE was more susceptible to motion and aliasing …
Representative images of nonenhanced breath-hold and free-breathing UTE MRI in the coronal …