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Positron emission tomography (PET) is widely used in various clinical applications, including cancer diagnosis, heart disease and neuro disorders. The use of radioactive tracer in PET imaging raises concerns due to the risk of radiation…

计算机视觉与模式识别 · 计算机科学 2017-12-13 Junshen Xu , Enhao Gong , John Pauly , Greg Zaharchuk

The fact that deep neural networks are susceptible to crafted perturbations severely impacts the use of deep learning in certain domains of application. Among many developed defense models against such attacks, adversarial training emerges…

机器学习 · 计算机科学 2020-07-13 Anh Bui , Trung Le , He Zhao , Paul Montague , Olivier deVel , Tamas Abraham , Dinh Phung

Restoring high-quality CT images from low dose CT counterparts is an ill-posed, nonlinear problem to which Deep Learning approaches have been giving superior solutions compared to classical model-based approaches. In this article, a…

图像与视频处理 · 电气工程与系统科学 2019-10-16 Shabab Bazrafkan , Vincent Van Nieuwenhove , Jan Sijbers

Single-image super-resolution aims to generate a high-resolution version of a low-resolution image, which serves as an essential component in many computer vision applications. This paper investigates the robustness of deep learning-based…

计算机视觉与模式识别 · 计算机科学 2019-10-03 Jun-Ho Choi , Huan Zhang , Jun-Hyuk Kim , Cho-Jui Hsieh , Jong-Seok Lee

Deep neural networks (DNNs) have achieved remarkable success in computer vision tasks such as image classification, segmentation, and object detection. However, they are vulnerable to adversarial attacks, which can cause incorrect…

计算机视觉与模式识别 · 计算机科学 2025-11-03 Suklav Ghosh , Sonal Kumar , Arijit Sur

Low dose CT is of great interest in these days. Dose reduction raises noise level in projections and decrease image quality in reconstructions. Model based image reconstruction can combine statistical noise model together with prior…

医学物理 · 物理学 2019-10-16 Kaichao Liang , Li Zhang , Yirong Yang , HongKai Yang , Yuxiang Xing

Synchrotron radiation sources are widely used in various fields, among which computed tomography (CT) is one of the most important. The amount of effort expended by the operator varies depending on the subject. If the number of angles…

图像与视频处理 · 电气工程与系统科学 2021-09-08 Ling Li , Yu Hu

Since 2016, deep learning (DL) has advanced tomographic imaging with remarkable successes, especially in low-dose computed tomography (LDCT) imaging. Despite being driven by big data, the LDCT denoising and pure end-to-end reconstruction…

图像与视频处理 · 电气工程与系统科学 2023-03-28 Wenjun Xia , Hongming Shan , Ge Wang , Yi Zhang

Deep learning-based low-dose computed tomography reconstruction methods already achieve high performance on standard image quality metrics like peak signal-to-noise ratio and structural similarity index measure. Yet, they frequently fail to…

图像与视频处理 · 电气工程与系统科学 2025-11-11 Necati Sefercioglu , Mehmet Ozan Unal , Metin Ertas , Isa Yildirim

Computed tomography (CT) uses X-ray measurements taken from sensors around the body to generate tomographic images of the human body. Conventional reconstruction algorithms can be used if the X-ray data are adequately sampled and of high…

图像与视频处理 · 电气工程与系统科学 2021-12-28 Ruiwen Xing , Thomas Humphries , Dong Si

Low-dose computed tomography (LDCT) image reconstruction techniques can reduce patient radiation exposure while maintaining acceptable imaging quality. Deep learning is widely used in this problem, but the performance of testing data…

图像与视频处理 · 电气工程与系统科学 2024-06-04 Kecheng Chen , Jie Liu , Renjie Wan , Victor Ho-Fun Lee , Varut Vardhanabhuti , Hong Yan , Haoliang Li

Low-dose computed tomography (LDCT) aims to minimize the radiation exposure to patients while maintaining diagnostic image quality. However, traditional CT reconstruction algorithms often struggle with the ill-posed nature of the problem,…

图像与视频处理 · 电气工程与系统科学 2024-10-17 Daisy Chen

Low Dose CT Denoising research aims to reduce the risks of radiation exposure to patients. Recently researchers have used deep learning to denoise low dose CT images with promising results. However, approaches that use mean-squared-error…

图像与视频处理 · 电气工程与系统科学 2024-09-05 Sepehr Ataei , Javad Alirezaie , Paul Babyn

Deep learning (DL) methods have become the state-of-the-art for reconstructing sub-sampled magnetic resonance imaging (MRI) data. However, studies have shown that these methods are susceptible to small adversarial input perturbations, or…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Mahdi Saberi , Chi Zhang , Mehmet Akçakaya

Low-dose CT (LDCT) imaging attracted a considerable interest for the reduction of the object's exposure to X-ray radiation. In recent years, supervised deep learning (DL) has been extensively studied for LDCT image reconstruction, which…

图像与视频处理 · 电气工程与系统科学 2022-10-06 Qiaoqiao Ding , Hui Ji , Yuhui Quan , Xiaoqun Zhang

Deployment of neural networks on resource-constrained devices demands models that are both compact and robust to adversarial inputs. However, compression and adversarial robustness often conflict. In this work, we introduce a dynamical…

机器学习 · 计算机科学 2025-09-24 Steffen Schotthöfer , H. Lexie Yang , Stefan Schnake

Low-dose CT imaging requires reconstruction from noisy indirect measurements which can be defined as an ill-posed linear inverse problem. In addition to conventional FBP method in CT imaging, recent compressed sensing based methods exploit…

图像与视频处理 · 电气工程与系统科学 2025-11-14 Mehmet Ozan Unal , Metin Ertas , Isa Yildirim

The extensive use of medical CT has raised a public concern over the radiation dose to the patient. Reducing the radiation dose leads to increased CT image noise and artifacts, which can adversely affect not only the radiologists judgement…

图像与视频处理 · 电气工程与系统科学 2021-07-13 Jiajin Zhang , Hanqing Chao , Xuanang Xu , Chuang Niu , Ge Wang , Pingkun Yan

Reconstruction of CT images from a limited set of projections through an object is important in several applications ranging from medical imaging to industrial settings. As the number of available projections decreases, traditional…

计算机视觉与模式识别 · 计算机科学 2022-01-25 Anish Lahiri , Marc Klasky , Jeffrey A. Fessler , Saiprasad Ravishankar

Vulnerability to adversarial attacks is a well-known weakness of Deep Neural Networks. While most of the studies focus on natural images with standardized benchmarks like ImageNet and CIFAR, little research has considered real world…

图像与视频处理 · 电气工程与系统科学 2022-12-19 Salah Ghamizi , Maxime Cordy , Michail Papadakis , Yves Le Traon