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The two-dimensional nature of mammography makes estimation of the overall breast density challenging, and estimation of the true patient-specific radiation dose impossible. Digital breast tomosynthesis (DBT), a pseudo-3D technique, is now…

Breast X-ray CT imaging is being considered in screening as an extension to mammography. As a large fraction of the population will be exposed to radiation, low-dose imaging is essential. Iterative image reconstruction based on solving an…

医学物理 · 物理学 2011-11-14 Jakob H. Jørgensen , Emil Y. Sidky , Xiaochuan Pan

X-ray computed tomography (CT) reconstructs cross-sectional images from projection data. However, ionizing X-ray radiation associated with CT scanning might induce cancer and genetic damage. Therefore, the reduction of radiation dose has…

图像与视频处理 · 电气工程与系统科学 2019-09-13 Huidong Xie , Hongming Shan , Wenxiang Cong , Xiaohua Zhang , Shaohua Liu , Ruola Ning , Ge Wang

Cone Beam CT plays an important role in many medical fields nowadays, but the potential of this imaging modality is hampered by lower image quality compared to the conventional CT. A lot of recent research has been directed towards…

医学物理 · 物理学 2023-11-01 Nikita Moriakov , Jan-Jakob Sonke , Jonas Teuwen

Digital breast tomosynthesis (DBT) exams should utilize the lowest possible radiation dose while maintaining sufficiently good image quality for accurate medical diagnosis. In this work, we propose a convolution neural network (CNN) to…

图像与视频处理 · 电气工程与系统科学 2022-03-23 Rodrigo de Barros Vimieiro , Chuang Niu , Hongming Shan , Lucas Rodrigues Borges , Ge Wang , Marcelo Andrade da Costa Vieira

Diffuse optical breast imaging utilizes near-infrared (NIR) light propagation through tissues to assess the optical properties of tissue for the identification of abnormal tissue. This optical imaging approach is sensitive, cost-effective,…

医学物理 · 物理学 2017-11-22 Wenxiang Cong , Xavier Intes , Ge Wang

Deep learning-based computer-aided diagnosis has achieved unprecedented performance in breast cancer detection. However, most approaches are computationally intensive, which impedes their broader dissemination in real-world applications. In…

图像与视频处理 · 电气工程与系统科学 2022-01-14 Jiaqiao Shi , Aleksandar Vakanski , Min Xian , Jianrui Ding , Chunping Ning

Deep learning based solutions are being succesfully implemented for a wide variety of applications. Most notably, clinical use-cases have gained an increased interest and have been the main driver behind some of the cutting-edge data-driven…

图像与视频处理 · 电气工程与系统科学 2023-04-04 Theodor Cheslerean-Boghiu , Felix C. Hofmann , Manuel Schultheiß , Franz Pfeiffer , Daniela Pfeiffer , Tobias Lasser

Model based iterative reconstruction (MBIR) algorithms for low-dose X-ray CT are computationally expensive. To address this problem, we recently proposed a deep convolutional neural network (CNN) for low-dose X-ray CT and won the second…

机器学习 · 统计学 2018-03-29 Eunhee Kang , Jaejun Yoo , Jong Chul Ye

To address the issues of limited samples, time-consuming feature design, and low accuracy in detection and classification of breast cancer pathological images, a breast cancer image classification model algorithm combining deep learning and…

图像与视频处理 · 电气工程与系统科学 2024-09-12 Weimin Wang , Yufeng Li , Xu Yan , Mingxuan Xiao , Min Gao

By acquiring two sets of tomographic measurements at distinct X-ray spectra, the dual-energy CT (DECT) enables quantitative material-specific imaging. However, the conventionally decomposed material basis images may encounter severe image…

Breast tumor segmentation provides accurate tumor boundary, and serves as a key step toward further cancer quantification. Although deep learning-based approaches have been proposed and achieved promising results, existing approaches have…

图像与视频处理 · 电气工程与系统科学 2020-02-05 Bryar Shareef , Min Xian , Aleksandar Vakanski

Image reconstruction from insufficient data is common in computed tomography (CT), e.g., image reconstruction from truncated data, limited-angle data and sparse-view data. Deep learning has achieved impressive results in this field.…

图像与视频处理 · 电气工程与系统科学 2020-05-21 Yixing Huang , Alexander Preuhs , Michael Manhart , Guenter Lauritsch , Andreas Maier

Model based iterative reconstruction (MBIR) algorithms for low-dose X-ray CT are computationally complex because of the repeated use of the forward and backward projection. Inspired by this success of deep learning in computer vision…

计算机视觉与模式识别 · 计算机科学 2017-08-01 Eunhee Kang , junhong Min , Jong Chul Ye

The mathematical problem for Electrical Impedance Tomography (EIT) is a highly nonlinear ill-posed inverse problem requiring carefully designed reconstruction procedures to ensure reliable image generation. D-bar methods are based on a…

数值分析 · 数学 2018-05-09 Sarah Jane Hamilton , Andreas Hauptmann

Sparse-view cone-beam CT (CBCT) reconstruction is an important direction to reduce radiation dose and benefit clinical applications. Previous voxel-based generation methods represent the CT as discrete voxels, resulting in high memory…

图像与视频处理 · 电气工程与系统科学 2023-09-01 Yiqun Lin , Zhongjin Luo , Wei Zhao , Xiaomeng Li

Digital Breast Tomosynthesis is an X-ray imaging technique that allows a volumetric reconstruction of the breast, from a small number of low-dose two-dimensional projections. Although it is already used in clinical setting, enhancing the…

数值分析 · 数学 2020-07-21 Elena Morotti , Elena Loli Piccolomini

Recently, deep learning has been successfully applied to the single-image super-resolution (SISR) with remarkable performance. However, most existing methods focus on building a more complex network with a large number of layers, which can…

计算机视觉与模式识别 · 计算机科学 2022-04-20 Wenbin Zou , Tian Ye , Weixin Zheng , Yunchen Zhang , Liang Chen , Yi Wu

Dual-energy computed tomography (DECT) has been widely used in many applications that need material decomposition. Image-domain methods directly decompose material images from high- and low-energy attenuation images, and thus, are…

图像与视频处理 · 电气工程与系统科学 2022-01-25 Zhipeng Li , Yong Long , Il Yong Chun

Low dose X-ray computed tomography (LDCT) is desirable for reduced patient dose. This work develops image reconstruction methods with deep learning (DL) regularization for LDCT. Our methods are based on unrolling of proximal…

图像与视频处理 · 电气工程与系统科学 2020-08-26 Qiaoqiao Ding , Gaoyu Chen , Xiaoqun Zhang , Qiu Huang , Hui Jiand Hao Gao