1 code implementation • 5 Oct 2023 • Yingcheng Liu, Neerav Karani, Neel Dey, S. Mazdak Abulnaga, Junshen Xu, P. Ellen Grant, Esra Abaci Turk, Polina Golland
The placenta plays a crucial role in fetal development.
1 code implementation • 3 Mar 2023 • Molin Zhang, Junshen Xu, Yamin Arefeen, Elfar Adalsteinsson
We perform experiments on simulated and retrospective in-vivo data to evaluate the performance of the proposed zero-shot learning method for temporal FSE reconstruction.
1 code implementation • 27 Aug 2022 • Yamin Arefeen, Junshen Xu, Molin Zhang, Zijing Dong, Fuyixue Wang, Jacob White, Berkin Bilgic, Elfar Adalsteinsson
Purpose: Training auto-encoders on simulated signal evolution and inserting the decoder into the forward model improves reconstructions through more compact, Bloch-equation-based representations of signal in comparison to linear subspaces.
1 code implementation • 22 Jun 2022 • Junshen Xu, Daniel Moyer, P. Ellen Grant, Polina Golland, Juan Eugenio Iglesias, Elfar Adalsteinsson
Experiments with real-world MRI data are also performed to demonstrate the ability of the proposed model to improve the quality of 3D reconstruction under severe fetal motion.
1 code implementation • 23 Jun 2021 • Junshen Xu, Esra Abaci Turk, P. Ellen Grant, Polina Golland, Elfar Adalsteinsson
Fetal motion is unpredictable and rapid on the scale of conventional MR scan times.
1 code implementation • 23 Jun 2021 • Junshen Xu, Elfar Adalsteinsson
Further, it only requires a single noisy image with a few auxiliary observations at different time frames for training and inference.
no code implementations • 16 Jun 2021 • Junshen Xu, Eric Z. Chen, Xiao Chen, Terrence Chen, Shanhui Sun
The inference consists of iterative gradient updates similar to a conventional gradient descent optimizer but in a much faster way, because the neural ODE learns from the training data to adapt the gradient efficiently at each iteration.
no code implementations • 16 Jul 2020 • Molin Zhang, Junshen Xu, Esra Abaci Turk, P. Ellen Grant, Polina Golland, Elfar Adalsteinsson
The proposed DRL for fetal pose landmark search demonstrates a potential clinical utility for online detection of fetal motion that guides real-time mitigation of motion artifacts as well as health diagnosis during MRI of the pregnant mother.
no code implementations • 23 Jun 2020 • Junshen Xu, Sayeri Lala, Borjan Gagoski, Esra Abaci Turk, P. Ellen Grant, Polina Golland, Elfar Adalsteinsson
The proposed method is also implemented and evaluated on an MR scanner, which demonstrates the feasibility of online image quality assessment and image reacquisition during fetal MR scans.
no code implementations • 10 Jul 2019 • Junshen Xu, Molin Zhang, Esra Abaci Turk, Larry Zhang, Ellen Grant, Kui Ying, Polina Golland, Elfar Adalsteinsson
The performance and diagnostic utility of magnetic resonance imaging (MRI) in pregnancy is fundamentally constrained by fetal motion.
no code implementations • 12 Dec 2017 • Junshen Xu, Enhao Gong, John Pauly, Greg Zaharchuk
Experiments shows the proposed method can reconstruct low-dose PET image to a standard-dose quality with only two-hundredth dose.