Search Results for author: Boah Kim

Found 13 papers, 3 papers with code

Automated Classification of Body MRI Sequence Type Using Convolutional Neural Networks

no code implementations12 Feb 2024 Kimberly Helm, Tejas Sudharshan Mathai, Boah Kim, Pritam Mukherjee, Jianfei Liu, Ronald M. Summers

In order to reduce clinician oversight and ensure the validity of the DICOM headers, we propose an automated method to classify the 3D MRI sequence acquired at the levels of the chest, abdomen, and pelvis.

3D Classification

Semantic Image Synthesis for Abdominal CT

no code implementations11 Dec 2023 Yan Zhuang, Benjamin Hou, Tejas Sudharshan Mathai, Pritam Mukherjee, Boah Kim, Ronald M. Summers

As a new emerging and promising type of generative models, diffusion models have proven to outperform Generative Adversarial Networks (GANs) in multiple tasks, including image synthesis.

Data Augmentation Image Generation

C-DARL: Contrastive diffusion adversarial representation learning for label-free blood vessel segmentation

no code implementations31 Jul 2023 Boah Kim, Yujin Oh, Bradford J. Wood, Ronald M. Summers, Jong Chul Ye

Blood vessel segmentation in medical imaging is one of the essential steps for vascular disease diagnosis and interventional planning in a broad spectrum of clinical scenarios in image-based medicine and interventional medicine.

Contrastive Learning Representation Learning +1

Diffusion Adversarial Representation Learning for Self-supervised Vessel Segmentation

no code implementations29 Sep 2022 Boah Kim, Yujin Oh, Jong Chul Ye

Also, by adversarial learning based on the proposed switchable spatially-adaptive denormalization, our model estimates synthetic fake vessel images as well as vessel segmentation masks, which further makes the model capture vessel-relevant semantic information.

Denoising Representation Learning +1

Diffusion Deformable Model for 4D Temporal Medical Image Generation

1 code implementation27 Jun 2022 Boah Kim, Jong Chul Ye

Our proposed DDM is composed of the diffusion and the deformation modules so that DDM can learn spatial deformation information between the source and target volumes and provide a latent code for generating intermediate frames along a geodesic path.

Denoising Image Generation +1

DiffuseMorph: Unsupervised Deformable Image Registration Using Diffusion Model

no code implementations9 Dec 2021 Boah Kim, Inhwa Han, Jong Chul Ye

Specifically, the deformation fields are generated by the conditional score function of the deformation between the moving and fixed images, so that the registration can be performed from continuous deformation by simply scaling the latent feature of the score.

Image Registration Medical Image Registration

Federated Split Task-Agnostic Vision Transformer for COVID-19 CXR Diagnosis

no code implementations NeurIPS 2021 Sangjoon Park, Gwanghyun Kim, Jeongsol Kim, Boah Kim, Jong Chul Ye

For example, this enables neural network training for COVID-19 diagnosis on chest X-ray (CXR) images without collecting patient CXR data across multiple hospitals.

COVID-19 Diagnosis Federated Learning

Federated Split Vision Transformer for COVID-19 CXR Diagnosis using Task-Agnostic Training

no code implementations2 Nov 2021 Sangjoon Park, Gwanghyun Kim, Jeongsol Kim, Boah Kim, Jong Chul Ye

For example, this enables neural network training for COVID-19 diagnosis on chest X-ray (CXR) images without collecting patient CXR data across multiple hospitals.

COVID-19 Diagnosis Federated Learning

Privacy-preserving Task-Agnostic Vision Transformer for Image Processing

1 code implementation29 Sep 2021 Boah Kim, Jeongsol Kim, Jong Chul Ye

Inspired by the recent success of Vision Transformer (ViT), here we present a new distributed learning framework for image processing applications, allowing clients to learn multiple tasks with their private data.

Multi-Task Learning Privacy Preserving

Federated Split Task-Agnostic Vision Transformer for COVID-19 CXR Diagnosis

no code implementations NeurIPS 2021 Sangjoon Park, Gwanghyun Kim, Jeongsol Kim, Boah Kim, Jong Chul Ye

For example, this enables neural network training for COVID-19 diagnosis on chest X-ray (CXR) images without collecting patient CXR data across multiple hospitals.

COVID-19 Diagnosis Federated Learning

CycleMorph: Cycle Consistent Unsupervised Deformable Image Registration

no code implementations13 Aug 2020 Boah Kim, Dong Hwan Kim, Seong Ho Park, Jieun Kim, June-Goo Lee, Jong Chul Ye

However, the existing deep learning methods still have limitation in the preservation of original topology during the deformation with registration vector fields.

Image Registration

Mumford-Shah Loss Functional for Image Segmentation with Deep Learning

2 code implementations5 Apr 2019 Boah Kim, Jong Chul Ye

This loss function is based on the observation that the softmax layer of deep neural networks has striking similarity to the characteristic function in the Mumford-Shah functional.

Image Segmentation Segmentation +1

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