Search Results for author: Sangtae Ahn

Found 7 papers, 3 papers with code

Improving the Performance of Object Detection by Preserving Balanced Class Distribution

1 code implementation Mathematics 2023 Heewon Lee, Sangtae Ahn

We tested our proposed method not only on public datasets that typically exhibit balanced class distribution but also on private datasets that may have imbalanced class distribution.

Object object-detection +1

Improving the performance of object detection by preserving label distribution

1 code implementation28 Aug 2023 Heewon Lee, Sangtae Ahn

We tested our proposed method not only on public datasets that typically exhibit balanced class distribution but also on custom datasets that may have imbalanced class distribution.

Object object-detection +1

Deep learning-based reconstruction of highly accelerated 3D MRI

no code implementations9 Mar 2022 Sangtae Ahn, Uri Wollner, Graeme McKinnon, Isabelle Heukensfeldt Jansen, Rafi Brada, Dan Rettmann, Ty A. Cashen, John Huston, J. Kevin DeMarco, Robert Y. Shih, Joshua D. Trzasko, Christopher J. Hardy, Thomas K. F. Foo

The trained model was evaluated on 3D MPRAGE brain scan data retrospectively-undersampled with a 10-fold acceleration, compared to a conventional parallel imaging method with a 2-fold acceleration.

Artificial Intelligence in PET: an Industry Perspective

no code implementations14 Jul 2021 Arkadiusz Sitek, Sangtae Ahn, Evren Asma, Adam Chandler, Alvin Ihsani, Sven Prevrhal, Arman Rahmim, Babak Saboury, Kris Thielemans

Artificial intelligence (AI) has significant potential to positively impact and advance medical imaging, including positron emission tomography (PET) imaging applications.

Image Reconstruction Scheduling

Adaptive Gradient Balancing for UndersampledMRI Reconstruction and Image-to-Image Translation

1 code implementation5 Apr 2021 Itzik Malkiel, Sangtae Ahn, Valentina Taviani, Anne Menini, Lior Wolf, Christopher J. Hardy

Recent accelerated MRI reconstruction models have used Deep Neural Networks (DNNs) to reconstruct relatively high-quality images from highly undersampled k-space data, enabling much faster MRI scanning.

Generative Adversarial Network Image-to-Image Translation +2

A Novel Approach for Correcting Multiple Discrete Rigid In-Plane Motions Artefacts in MRI Scans

no code implementations24 Jun 2020 Michael Rotman, Rafi Brada, Israel Beniaminy, Sangtae Ahn, Christopher J. Hardy, Lior Wolf

Motion artefacts created by patient motion during an MRI scan occur frequently in practice, often rendering the scans clinically unusable and requiring a re-scan.

Conditional WGANs with Adaptive Gradient Balancing for Sparse MRI Reconstruction

no code implementations2 May 2019 Itzik Malkiel, Sangtae Ahn, Valentina Taviani, Anne Menini, Lior Wolf, Christopher J. Hardy

Recent sparse MRI reconstruction models have used Deep Neural Networks (DNNs) to reconstruct relatively high-quality images from highly undersampled k-space data, enabling much faster MRI scanning.

Generative Adversarial Network MRI Reconstruction

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