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Simulation of x-ray projection images plays an important role in cone beam CT (CBCT) related research projects. A projection image contains primary signal, scatter signal, and noise. It is computationally demanding to perform accurate and…

医学物理 · 物理学 2015-06-04 Xun Jia , Hao Yan , Laura Cervino , Michael Folkerts , Steve B. Jiang

Early detection of pulmonary nodules in computed tomography (CT) images is essential for successful outcomes among lung cancer patients. Much attention has been given to deep convolutional neural network (DCNN)-based approaches to this…

计算机视觉与模式识别 · 计算机科学 2019-03-26 Hao Tang , Daniel R. Kim , Xiaohui Xie

We introduce a new computer aided detection and diagnosis system for lung cancer screening with low-dose CT scans that produces meaningful probability assessments. Our system is based entirely on 3D convolutional neural networks and…

计算机视觉与模式识别 · 计算机科学 2020-01-22 Onur Ozdemir , Rebecca L. Russell , Andrew A. Berlin

A computer-aided detection (CAD) system for the identification of pulmonary nodules in low-dose multi-detector computed-tomography (CT) images has been developed in the framework of the MAGIC-5 Italian project. One of the main goals of this…

Using 3D CNNs on high resolution medical volumes is very computationally demanding, especially for large datasets like the UK Biobank which aims to scan 100,000 subjects. Here we demonstrate that using 2D CNNs on a few 2D projections…

图像与视频处理 · 电气工程与系统科学 2023-03-14 Johan Jönemo , Muhammad Usman Akbar , Robin Kämpe , J Paul Hamilton , Anders Eklund

To correct for respiratory motion in PET imaging, an interpretable and unsupervised deep learning technique, FlowNet-PET, was constructed. The network was trained to predict the optical flow between two PET frames from different breathing…

图像与视频处理 · 电气工程与系统科学 2022-08-04 Teaghan O'Briain , Carlos Uribe , Kwang Moo Yi , Jonas Teuwen , Ioannis Sechopoulos , Magdalena Bazalova-Carter

This paper aims to solve a fundamental problem in intensity-based 2D/3D registration, which concerns the limited capture range and need for very good initialization of state-of-the-art image registration methods. We propose a regression…

计算机视觉与模式识别 · 计算机科学 2017-03-07 Benjamin Hou , Amir Alansary , Steven McDonagh , Alice Davidson , Mary Rutherford , Jo V. Hajnal , Daniel Rueckert , Ben Glocker , Bernhard Kainz

Motion estimation of organs in a sequence of images is important in numerous medical imaging applications. The focus of this paper is the analysis of 4D Respiratory Correlated Computed Tomography (RCCT) Imaging. It is hypothesized that the…

图像与视频处理 · 电气工程与系统科学 2019-09-27 Markus D. Foote , Pouya Sabouri , Amit Sawant , Sarang C. Joshi

The current standard of intra-operative navigation during Fenestrated Endovascular Aortic Repair (FEVAR) calls for need of 3D alignments between inserted devices and aortic branches. The navigation commonly via 2D fluoroscopic images, lacks…

计算机视觉与模式识别 · 计算机科学 2024-07-23 Jian-Qing Zheng , Xiao-Yun Zhou , Celia Riga , Guang-Zhong Yang

Recently, X-ray imaging dose from computed tomography (CT) or cone beam CT (CBCT) scans has become a serious concern. Patient-specific imaging dose calculation has been proposed for the purpose of dose management. While Monte Carlo (MC)…

医学物理 · 物理学 2015-05-30 Xun Jia , Hao Yan , Xuejun Gu , Steve B. Jiang

Early and correct diagnosis is a very important aspect of cancer treatment. Detection of tumour in Computed Tomography scan is a tedious and tricky task which requires expert knowledge and a lot of human working hours. As small human error…

计算机视觉与模式识别 · 计算机科学 2018-01-08 Devesh Walawalkar

In radiation therapy, tumor tracking is a challenging task that allows a better dose delivery. One practice is to acquire X-ray images in real-time during treatment, that are used to estimate the tumor location. These informations are used…

应用统计 · 统计学 2019-03-22 Antoine Aspeel , Damien Dasnoy , Raphaël M. Jungers , Benoît Macq

Computed tomography imaging is a standard modality for detecting and assessing lung cancer. In order to evaluate the malignancy of lung nodules, clinical practice often involves expert qualitative ratings on several criteria describing a…

计算机视觉与模式识别 · 计算机科学 2016-09-22 Mario Buty , Ziyue Xu , Mingchen Gao , Ulas Bagci , Aaron Wu , Daniel J. Mollura

Cell segmentation in microscopy is a challenging problem, since cells are often asymmetric and densely packed. This becomes particularly challenging for extremely large images, since manual intervention and processing time can make…

图像与视频处理 · 电气工程与系统科学 2019-06-19 Mahsa Lotfollahi , Sebastian Berisha , Leila Saadatifard , Laura Montier , Jokubas Ziburkus , David Mayerich

Conventional 2D fluorescence imaging in glioma surgery cannot separate intrinsic fluorophore strength from attenuation with depth, creating depth-intensity ambiguity that can compromise assessment of residual tumour and fluorescence based…

医学物理 · 物理学 2026-04-07 Yucheng Bian , Sebastien Ourselin , Yijing Xie

Automated methods for detecting pulmonary embolisms (PEs) on CT pulmonary angiography (CTPA) images are of high demand. Existing methods typically employ separate steps for PE candidate detection and false positive removal, without…

计算机视觉与模式识别 · 计算机科学 2021-11-11 Yi Lin , Jianchao Su , Xiang Wang , Xiang Li , Jingen Liu , Kwang-Ting Cheng , Xin Yang

This work aims to generate realistic anatomical deformations from static patient scans. Specifically, we present a method to generate these deformations/augmentations via deep learning driven respiratory motion simulation that provides the…

计算机视觉与模式识别 · 计算机科学 2023-01-30 Donghoon Lee , Ellen Yorke , Masoud Zarepisheh , Saad Nadeem , Yu-Chi Hu

Since, cancer is curable when diagnosed at an early stage, lung cancer screening plays an important role in preventive care. Although both low dose computed tomography (LDCT) and computed tomography (CT) scans provide more medical…

图像与视频处理 · 电气工程与系统科学 2020-07-28 Worawate Ausawalaithong , Sanparith Marukatat , Arjaree Thirach , Theerawit Wilaiprasitporn

Automatic localization and segmentation of organs-at-risk (OAR) in CT are essential pre-processing steps in medical image analysis tasks, such as radiation therapy planning. For instance, the segmentation of OAR surrounding tumors enables…

计算机视觉与模式识别 · 计算机科学 2022-03-02 Fernando Navarro , Guido Sasahara , Suprosanna Shit , Ivan Ezhov , Jan C. Peeken , Stephanie E. Combs , Bjoern H. Menze

In this paper we implemented the algorithm we developed in [1] called 3DPIFCM in a parallel environment by using CUDA on a GPU. In our previous work we introduced 3DPIFCM which performs segmentation of images in noisy conditions and uses…

计算机视觉与模式识别 · 计算机科学 2020-02-07 Arie Agranonik , Maya Herman , Mark Last