Search Results for author: Chuang Niu

Found 34 papers, 11 papers with code

Deep Few-view High-resolution Photon-counting Extremity CT at Halved Dose for a Clinical Trial

no code implementations19 Mar 2024 Mengzhou Li, Chuang Niu, Ge Wang, Maya R Amma, Krishna M Chapagain, Stefan Gabrielson, Andrew Li, Kevin Jonker, Niels de Ruiter, Jennifer A Clark, Phil Butler, Anthony Butler, Hengyong Yu

Despite the success of deep learning methods for 2D few-view reconstruction, applying them to HR volumetric reconstruction of extremity scans for clinical diagnosis has been limited due to GPU memory constraints, training data scarcity, and domain gap issues.

Image Reconstruction

Low-dose CT Denoising with Language-engaged Dual-space Alignment

1 code implementation10 Mar 2024 Zhihao Chen, Tao Chen, Chenhui Wang, Chuang Niu, Ge Wang, Hongming Shan

While various deep learning methods were proposed for low-dose computed tomography (CT) denoising, they often suffer from over-smoothing, blurring, and lack of explainability.

Computed Tomography (CT) Denoising

Photon-counting CT using a Conditional Diffusion Model for Super-resolution and Texture-preservation

no code implementations25 Feb 2024 Christopher Wiedeman, Chuang Niu, Mengzhou Li, Bruno De Man, Jonathan S Maltz, Ge Wang

Ultra-high resolution images are desirable in photon counting CT (PCCT), but resolution is physically limited by interactions such as charge sharing.

Denoising Disentanglement +1

IQAGPT: Image Quality Assessment with Vision-language and ChatGPT Models

no code implementations25 Dec 2023 Zhihao Chen, Bin Hu, Chuang Niu, Tao Chen, Yuxin Li, Hongming Shan, Ge Wang

Second, we fine-tune the image quality captioning VLM on the CT-IQA dataset to generate quality descriptions.

Image Quality Assessment

Specialty-Oriented Generalist Medical AI for Chest CT Screening

1 code implementation3 Apr 2023 Chuang Niu, Qing Lyu, Christopher D. Carothers, Parisa Kaviani, Josh Tan, Pingkun Yan, Mannudeep K. Kalra, Christopher T. Whitlow, Ge Wang

Modern medical records include a vast amount of multimodal free text clinical data and imaging data from radiology, cardiology, and digital pathology.

Disease Prediction Lung Cancer Diagnosis +3

Parallel Diffusion Model-based Sparse-view Cone-beam Breast CT

no code implementations22 Mar 2023 Wenjun Xia, Hsin Wu Tseng, Chuang Niu, Wenxiang Cong, Xiaohua Zhang, Shaohua Liu, Ruola Ning, Srinivasan Vedantham, Ge Wang

Specifically, in this study we transform the cutting-edge Denoising Diffusion Probabilistic Model (DDPM) into a parallel framework for sub-volume-based sparse-view breast CT image reconstruction in projection and image domains.

Computed Tomography (CT) Denoising +1

LIT-Former: Linking In-plane and Through-plane Transformers for Simultaneous CT Image Denoising and Deblurring

1 code implementation21 Feb 2023 Zhihao Chen, Chuang Niu, Qi Gao, Ge Wang, Hongming Shan

Here, we propose to link in-plane and through-plane transformers for simultaneous in-plane denoising and through-plane deblurring, termed as LIT-Former, which can efficiently synergize in-plane and through-plane sub-tasks for 3D CT imaging and enjoy the advantages of both convolution and transformer networks.

Computed Tomography (CT) Deblurring +2

Quad-Net: Quad-domain Network for CT Metal Artifact Reduction

1 code implementation24 Jul 2022 Zilong Li, Qi Gao, Yaping Wu, Chuang Niu, Junping Zhang, Meiyun Wang, Ge Wang, Hongming Shan

Here we extend the state-of-the-art dual-domain deep network approach into a quad-domain counterpart so that all the features in the sinogram, image, and their corresponding Fourier domains are synergized to eliminate metal artifacts optimally without compromising structural subtleties.

Computed Tomography (CT) Metal Artifact Reduction

HOME: High-Order Mixed-Moment-based Embedding for Representation Learning

no code implementations15 Jul 2022 Chuang Niu, Ge Wang

Minimum redundancy among different elements of an embedding in a latent space is a fundamental requirement or major preference in representation learning to capture intrinsic informational structures.

Representation Learning Self-Supervised Learning +1

Self-Supervised Representation Learning With MUlti-Segmental Informational Coding (MUSIC)

no code implementations13 Jun 2022 Chuang Niu, Ge Wang

Self-supervised representation learning maps high-dimensional data into a meaningful embedding space, where samples of similar semantic contents are close to each other.

Contrastive Learning Representation Learning

Unsupervised Contrastive Learning based Transformer for Lung Nodule Detection

no code implementations30 Apr 2022 Chuang Niu, Ge Wang

To effectively train the transformer model on a relatively small dataset, the region-based contrastive learning method is used to boost the performance by pre-training the 3D transformer with public CT images.

Computed Tomography (CT) Contrastive Learning +1

X-ray Dissectography Improves Lung Nodule Detection

no code implementations24 Mar 2022 Chuang Niu, Giridhar Dasegowda, Pingkun Yan, Mannudeep K. Kalra, Ge Wang

Although radiographs are the most frequently used worldwide due to their cost-effectiveness and widespread accessibility, the structural superposition along the x-ray paths often renders suspicious or concerning lung nodules difficult to detect.

Lung Nodule Detection

Convolutional Neural Network to Restore Low-Dose Digital Breast Tomosynthesis Projections in a Variance Stabilization Domain

no code implementations22 Mar 2022 Rodrigo de Barros Vimieiro, Chuang Niu, Hongming Shan, Lucas Rodrigues Borges, Ge Wang, Marcelo Andrade da Costa Vieira

To accurately control the network operation point, in terms of noise and blur of the restored image, we propose a loss function that minimizes the bias and matches residual noise between the input and the output.

Medical Diagnosis

Phase function estimation from a diffuse optical image via deep learning

no code implementations16 Nov 2021 Yuxuan Liang, Chuang Niu, Chen Wei, Shenghan Ren, Wenxiang Cong, Ge Wang

The phase function is a key element of a light propagation model for Monte Carlo (MC) simulation, which is usually fitted with an analytic function with associated parameters.

Stationary Multi-source AI-powered Real-time Tomography (SMART)

no code implementations27 Aug 2021 Weiwen Wu, Yaohui Tang, Tianling Lv, Chuang Niu, Cheng Wang, Yiyan Guo, Yunheng Chang, Ge Wang, Yan Xi

The reconstructed volumetric images convincingly demonstrate the merits of the SMART system using the AI-empowered interior tomography approach, enabling cardiac micro-CT with the unprecedented temporal resolution of 30ms, which is an order of magnitude higher than the state of the art.

Computed Tomography (CT)

AI-Enabled Ultra-Low-Dose CT Reconstruction

no code implementations17 Jun 2021 Weiwen Wu, Chuang Niu, Shadi Ebrahimian, Hengyong Yu, Mannu Kalra, Ge Wang

By the ALARA (As Low As Reasonably Achievable) principle, ultra-low-dose CT reconstruction is a holy grail to minimize cancer risks and genetic damages, especially for children.

Task-Oriented Low-Dose CT Image Denoising

1 code implementation25 Mar 2021 Jiajin Zhang, Hanqing Chao, Xuanang Xu, Chuang Niu, Ge Wang, Pingkun Yan

The extensive use of medical CT has raised a public concern over the radiation dose to the patient.

Image Denoising

Image Synthesis for Data Augmentation in Medical CT using Deep Reinforcement Learning

no code implementations18 Mar 2021 Arjun Krishna, Kedar Bartake, Chuang Niu, Ge Wang, Youfang Lai, Xun Jia, Klaus Mueller

Deep learning has shown great promise for CT image reconstruction, in particular to enable low dose imaging and integrated diagnostics.

Data Augmentation Image Generation +4

SPICE: Semantic Pseudo-labeling for Image Clustering

1 code implementation17 Mar 2021 Chuang Niu, Hongming Shan, Ge Wang

In this paper, we present a Semantic Pseudo-labeling-based Image ClustEring (SPICE) framework, which divides the clustering network into a feature model for measuring the instance-level similarity and a clustering head for identifying the cluster-level discrepancy.

Clustering Contrastive Learning +5

Noise Entangled GAN For Low-Dose CT Simulation

no code implementations18 Feb 2021 Chuang Niu, Ge Wang, Pingkun Yan, Juergen Hahn, Youfang Lai, Xun Jia, Arjun Krishna, Klaus Mueller, Andreu Badal, KyleJ. Myers, Rongping Zeng

We propose a Noise Entangled GAN (NE-GAN) for simulating low-dose computed tomography (CT) images from a higher dose CT image.

Computed Tomography (CT)

Suppression of Correlated Noise with Similarity-based Unsupervised Deep Learning

1 code implementation6 Nov 2020 Chuang Niu, Mengzhou Li, Fenglei Fan, Weiwen Wu, Xiaodong Guo, Qing Lyu, Ge Wang

Limited by the independent noise assumption, current unsupervised denoising methods cannot process correlated noises as in CT images.

Computed Tomography (CT) Image Denoising

Self-supervised Representation Learning for Evolutionary Neural Architecture Search

1 code implementation31 Oct 2020 Chen Wei, Yiping Tang, Chuang Niu, Haihong Hu, Yue Wang, Jimin Liang

To enhance the predictive performance of neural predictors, we devise two self-supervised learning methods from different perspectives to pre-train the architecture embedding part of neural predictors to generate a meaningful representation of neural architectures.

Contrastive Learning Neural Architecture Search +2

Deep Learning based Spectral CT Imaging

no code implementations28 Aug 2020 Weiwen Wu, Dianlin Hu, Chuang Niu, Lieza Vanden Broeke, Anthony P. H. Butler, Peng Cao, James Atlas, Alexander Chernoglazov, Varut Vardhanabhuti, Ge Wang

To address the image deblurring problem associated with the $L_2^2$-loss, we propose a general $L_p^p$-loss, $p>0$ Furthermore, the images from different energy bins share similar structures of the same object, the regularization characterizing correlations of different energy bins is incorporated into the $L_p^p$-loss function, which helps unify the deep learning based methods with traditional compressed sensing based methods.

Computed Tomography (CT) Deblurring +2

Stabilizing Deep Tomographic Reconstruction

no code implementations4 Aug 2020 Weiwen Wu, Dianlin Hu, Wenxiang Cong, Hongming Shan, Shao-Yu Wang, Chuang Niu, Pingkun Yan, Hengyong Yu, Varut Vardhanabhuti, Ge Wang

ACID synergizes a deep reconstruction network trained on big data, kernel awareness from CS-inspired processing, and iterative refinement to minimize the data residual relative to real measurement.

Adversarial Attack Computed Tomography (CT) +1

Low-dimensional Manifold Constrained Disentanglement Network for Metal Artifact Reduction

no code implementations8 Jul 2020 Chuang Niu, Wenxiang Cong, Fenglei Fan, Hongming Shan, Mengzhou Li, Jimin Liang, Ge Wang

Deep neural network based methods have achieved promising results for CT metal artifact reduction (MAR), most of which use many synthesized paired images for training.

Disentanglement Metal Artifact Reduction

NPENAS: Neural Predictor Guided Evolution for Neural Architecture Search

1 code implementation28 Mar 2020 Chen Wei, Chuang Niu, Yiping Tang, Yue Wang, Haihong Hu, Jimin Liang

In this paper, we propose a neural predictor guided evolutionary algorithm to enhance the exploration ability of EA for NAS (NPENAS) and design two kinds of neural predictors.

Bayesian Optimization Evolutionary Algorithms +1

GATCluster: Self-Supervised Gaussian-Attention Network for Image Clustering

1 code implementation ECCV 2020 Chuang Niu, Jun Zhang, Ge Wang, Jimin Liang

To train the GATCluster in a completely unsupervised manner, we design four self-learning tasks with the constraints of transformation invariance, separability maximization, entropy analysis, and attention mapping.

Clustering Image Clustering +2

AFO-TAD: Anchor-free One-Stage Detector for Temporal Action Detection

no code implementations18 Oct 2019 Yiping Tang, Chuang Niu, Minghao Dong, Shenghan Ren, Jimin Liang

Many of the state-of-the-art methods predict the boundaries of action instances based on predetermined anchors akin to the two-dimensional object detection detectors.

Action Detection object-detection +2

DASNet: Reducing Pixel-level Annotations for Instance and Semantic Segmentation

no code implementations17 Sep 2018 Chuang Niu, Shenghan Ren, Jimin Liang

Pixel-level annotation demands expensive human efforts and limits the performance of deep networks that usually benefits from more such training data.

Segmentation Semantic Segmentation

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