1 code implementation • 10 Feb 2022 • Sayantan Bhadra, Umberto Villa, Mark A. Anastasio
In this work, a new empirical sampling method is proposed that computes multiple solutions of a tomographic inverse problem that are consistent with the same acquired measurement data.
no code implementations • 27 Jun 2021 • Weimin Zhou, Sayantan Bhadra, Frank J. Brooks, Hua Li, Mark A. Anastasio
AmbientGANs established using the proposed training procedure are systematically validated in a controlled way using computer-simulated magnetic resonance imaging (MRI) data corresponding to a stylized imaging system.
no code implementations • 30 Jan 2021 • Weimin Zhou, Sayantan Bhadra, Frank J. Brooks, Jason L. Granstedt, Hua Li, Mark A. Anastasio
Medical imaging systems are commonly assessed and optimized by use of objective-measures of image quality (IQ) that quantify the performance of an observer at specific tasks.
3 code implementations • 1 Dec 2020 • Sayantan Bhadra, Varun A. Kelkar, Frank J. Brooks, Mark A. Anastasio
The behavior of different reconstruction methods under the proposed formalism is discussed with the help of the numerical studies.
no code implementations • 5 Jul 2020 • Varun A. Kelkar, Sayantan Bhadra, Mark A. Anastasio
To circumvent this problem, in this work, a framework for reconstructing images from incomplete measurements is proposed that is formulated in the latent space of invertible neural network-based generative models.
no code implementations • 29 May 2020 • Weimin Zhou, Sayantan Bhadra, Frank J. Brooks, Hua Li, Mark A. Anastasio
To circumvent this, in this work, a new Progressive Growing AmbientGAN (ProAmGAN) strategy is developed for establishing SOMs from medical imaging measurements.
no code implementations • 27 Jan 2020 • Sayantan Bhadra, Weimin Zhou, Mark A. Anastasio
Medical image reconstruction is typically an ill-posed inverse problem.
no code implementations • 26 Jan 2020 • Weimin Zhou, Sayantan Bhadra, Frank J. Brooks, Hua Li, Mark A. Anastasio
However, because medical imaging systems record imaging measurements that are noisy and indirect representations of object properties, GANs cannot be directly applied to establish stochastic models of objects to-be-imaged.