Search Results for author: John M. Pauly

Found 20 papers, 7 papers with code

AutoSamp: Autoencoding MRI Sampling via Variational Information Maximization

2 code implementations5 Jun 2023 Cagan Alkan, Morteza Mardani, Shreyas S. Vasanawala, John M. Pauly

Experiments on public MRI datasets show improved reconstruction quality of the proposed AutoSamp method over the prevailing variable density and variable density Poisson disc sampling.

Anatomy

Artifact- and content-specific quality assessment for MRI with image rulers

no code implementations6 Nov 2021 Ke Lei, John M. Pauly, Shreyas S. Vasanawala

We propose a framework with multi-task CNN model trained with calibrated labels and inferenced with image rulers.

Image Quality Assessment

SSFD: Self-Supervised Feature Distance as an MR Image Reconstruction Quality Metric

no code implementations NeurIPS Workshop Deep_Invers 2021 Philip M Adamson, Beliz Gunel, Jeffrey Dominic, Arjun D Desai, Daniel Spielman, Shreyas Vasanawala, John M. Pauly, Akshay Chaudhari

Self-supervised learning (SSL) has become a popular pre-training tool due to its ability to capture generalizable and domain-specific feature representations of the underlying data for downstream tasks.

MRI Reconstruction Self-Supervised Learning +1

Least Squares Optimal Density Compensation for the Gridding Non-uniform Discrete Fourier Transform

no code implementations12 Jun 2021 Nicholas Dwork, Daniel O'Connor, Ethan M. I. Johnson, Corey A. Baron, Jeremy W. Gordon, John M. Pauly, Peder E. Z. Larson

The Gridding algorithm has shown great utility for reconstructing images from non-uniformly spaced samples in the Fourier domain in several imaging modalities.

Risk Quantification in Deep MRI Reconstruction

no code implementations23 Oct 2020 Vineet Edupuganti, Morteza Mardani, Shreyas Vasanawala, John M. Pauly

Reliable medical image recovery is crucial for accurate patient diagnoses, but little prior work has centered on quantifying uncertainty when using non-transparent deep learning approaches to reconstruct high-quality images from limited measured data.

MRI Reconstruction

Multi-Domain Image Completion for Random Missing Input Data

no code implementations10 Jul 2020 Liyue Shen, Wentao Zhu, Xiaosong Wang, Lei Xing, John M. Pauly, Baris Turkbey, Stephanie Anne Harmon, Thomas Hogue Sanford, Sherif Mehralivand, Peter Choyke, Bradford Wood, Daguang Xu

Multi-domain data are widely leveraged in vision applications taking advantage of complementary information from different modalities, e. g., brain tumor segmentation from multi-parametric magnetic resonance imaging (MRI).

Brain Tumor Segmentation Disentanglement +3

Fast Variable Density Poisson-Disc Sample Generation with Directional Variation

no code implementations14 Apr 2020 Nicholas Dwork, Corey A. Baron, Ethan M. I. Johnson, Daniel O'Connor, John M. Pauly, Peder E. Z. Larson

We present a fast method for generating random samples according to a variable density Poisson-disc distribution.

Utilizing the Wavelet Transform's Structure in Compressed Sensing

no code implementations11 Feb 2020 Nicholas Dwork, Daniel O'Connor, Corey A. Baron, Ethan M. I. Johnson, Adam B. Kerr, John M. Pauly, Peder E. Z. Larson

In this work, we take advantage of the structure of this wavelet transform and identify an affine transformation that increases the sparsity of the result.

Denoising Image Reconstruction

Wasserstein GANs for MR Imaging: from Paired to Unpaired Training

no code implementations15 Oct 2019 Ke Lei, Morteza Mardani, John M. Pauly, Shreyas S. Vasanawala

The reconstruction networks consist of a generator which suppresses the input image artifacts, and a discriminator using a pool of (unpaired) labels to adjust the reconstruction quality.

Image Reconstruction

Highly Scalable Image Reconstruction using Deep Neural Networks with Bandpass Filtering

1 code implementation8 May 2018 Joseph Y. Cheng, Feiyu Chen, Marcus T. Alley, John M. Pauly, Shreyas S. Vasanawala

To increase the flexibility and scalability of deep neural networks for image reconstruction, a framework is proposed based on bandpass filtering.

Image Reconstruction

Deep Generative Adversarial Networks for Compressed Sensing Automates MRI

2 code implementations31 May 2017 Morteza Mardani, Enhao Gong, Joseph Y. Cheng, Shreyas Vasanawala, Greg Zaharchuk, Marcus Alley, Neil Thakur, Song Han, William Dally, John M. Pauly, Lei Xing

A multilayer convolutional neural network is then jointly trained based on diagnostic quality images to discriminate the projection quality.

MRI Reconstruction

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