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Spectral computed tomography (CT) offers the possibility to reconstruct attenuation images at different energy levels, which can be then used for material decomposition. However, traditional methods reconstruct each energy bin individually…

Purpose: CBCT-based adaptive radiotherapy requires daily images for accurate dose calculations. This study investigates the feasibility of applying a single convolutional network to facilitate CBCT-to-CT synthesis for head-and-neck, lung,…

Magnetic Resonance (MR) Imaging and Computed Tomography (CT) are the primary diagnostic imaging modalities quite frequently used for surgical planning and analysis. A general problem with medical imaging is that the acquisition process is…

图像与视频处理 · 电气工程与系统科学 2020-06-08 Vismay Agrawal , Avinash Kori , Vikas Kumar Anand , Ganapathy Krishnamurthi

For the task of change detection (CD) in remote sensing images, deep convolution neural networks (CNNs)-based methods have recently aggregated transformer modules to improve the capability of global feature extraction. However, they suffer…

计算机视觉与模式识别 · 计算机科学 2023-12-29 Weiming Li , Lihui Xue , Xueqian Wang , Gang Li

A major challenge in computed tomography (CT) is how to minimize patient radiation exposure without compromising image quality and diagnostic performance. The use of deep convolutional (Conv) neural networks for noise reduction in Low-Dose…

计算机视觉与模式识别 · 计算机科学 2019-08-06 Chenyu You , Linfeng Yang , Yi Zhang , Ge Wang

Segmentation of white matter lesions and deep grey matter structures is an important task in the quantification of magnetic resonance imaging in multiple sclerosis. In this paper we explore segmentation solutions based on convolutional…

Recently, convolutional neural networks (CNN) have been successfully applied to view synthesis problems. However, such CNN-based methods can suffer from lack of texture details, shape distortions, or high computational complexity. In this…

计算机视觉与模式识别 · 计算机科学 2017-03-08 Dinghuang Ji , Junghyun Kwon , Max McFarland , Silvio Savarese

Non-invasive detection of cardiovascular disorders from radiology scans requires quantitative image analysis of the heart and its substructures. There are well-established measurements that radiologists use for diseases assessment such as…

机器学习 · 统计学 2017-08-04 Aliasghar Mortazi , Jeremy Burt , Ulas Bagci

Commercial iterative reconstruction techniques on modern CT scanners target radiation dose reduction but there are lingering concerns over their impact on image appearance and low contrast detectability. Recently, machine learning,…

计算机视觉与模式识别 · 计算机科学 2019-07-16 Hongming Shan , Atul Padole , Fatemeh Homayounieh , Uwe Kruger , Ruhani Doda Khera , Chayanin Nitiwarangkul , Mannudeep K. Kalra , Ge Wang

Cone beam computed tomography (CBCT) is an important imaging technology widely used in medical scenarios, such as diagnosis and preoperative planning. Using fewer projection views to reconstruct CT, also known as sparse-view reconstruction,…

图像与视频处理 · 电气工程与系统科学 2024-06-07 Yiqun Lin , Jiewen Yang , Hualiang Wang , Xinpeng Ding , Wei Zhao , Xiaomeng Li

Despite advances in data augmentation and transfer learning, convolutional neural networks (CNNs) difficultly generalise to unseen domains. When segmenting brain scans, CNNs are highly sensitive to changes in resolution and contrast: even…

图像与视频处理 · 电气工程与系统科学 2023-03-01 Benjamin Billot , Douglas N. Greve , Oula Puonti , Axel Thielscher , Koen Van Leemput , Bruce Fischl , Adrian V. Dalca , Juan Eugenio Iglesias

Cone Beam Computed Tomography (CBCT) finds diverse applications in medicine. Ensuring high image quality in CBCT scans is essential for accurate diagnosis and treatment delivery. Yet, the susceptibility of CBCT images to noise and artifacts…

计算机视觉与模式识别 · 计算机科学 2024-09-30 Yunkui Pang , Yilin Liu , Xu Chen , Pew-Thian Yap , Jun Lian

The rapid development in representation learning techniques such as deep neural networks and the availability of large-scale, well-annotated medical imaging datasets have to a rapid increase in the use of supervised machine learning in the…

计算机视觉与模式识别 · 计算机科学 2023-04-19 Dat T. Ngo , Thao T. B. Nguyen , Hieu T. Nguyen , Dung B. Nguyen , Ha Q. Nguyen , Hieu H. Pham

Automated brain tumour segmentation has the potential of making a massive improvement in disease diagnosis, surgery, monitoring and surveillance. However, this task is extremely challenging. Here, we describe our automated segmentation…

图像与视频处理 · 电气工程与系统科学 2020-05-13 Indrajit Mazumdar

Object segmentation and structure localization are important steps in automated image analysis pipelines for microscopy images. We present a convolution neural network (CNN) based deep learning architecture for segmentation of objects in…

计算机视觉与模式识别 · 计算机科学 2019-01-24 Shan E Ahmed Raza , Linda Cheung , Muhammad Shaban , Simon Graham , David Epstein , Stella Pelengaris , Michael Khan , Nasir M. Rajpoot

Image denoising techniques are essential to reducing noise levels and enhancing diagnosis reliability in low-dose computed tomography (CT). Machine learning based denoising methods have shown great potential in removing the complex and…

计算机视觉与模式识别 · 计算机科学 2017-08-29 Dufan Wu , Kyungsang Kim , Georges El Fakhri , Quanzheng Li

Despite significant advancements in automatic brain tumor segmentation methods, their performance is not guaranteed when certain MR sequences are missing. Addressing this issue, it is crucial to synthesize the missing MR images that reflect…

图像与视频处理 · 电气工程与系统科学 2024-12-03 Jihoon Cho , Seunghyuck Park , Jinah Park

The generation of Synthetic Computed Tomography (sCT) images has become a pivotal methodology in modern clinical practice, particularly in the context of Radiotherapy (RT) treatment planning. The use of sCT enables the calculation of doses,…

The magnetic resonance (MR) analysis of brain tumors is widely used for diagnosis and examination of tumor subregions. The overlapping area among the intensity distribution of healthy, enhancing, non-enhancing, and edema regions makes the…

图像与视频处理 · 电气工程与系统科学 2020-06-01 Mohammad Hamghalam , Baiying Lei , Tianfu Wang

In this paper, we present an automated approach for segmenting multiple sclerosis (MS) lesions from multi-modal brain magnetic resonance images. Our method is based on a deep end-to-end 2D convolutional neural network (CNN) for slice-based…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Shahab Aslani , Michael Dayan , Loredana Storelli , Massimo Filippi , Vittorio Murino , Maria A Rocca , Diego Sona