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The segmentation of the abdominal aorta in non-contrast CT images is a non-trivial task for computer-assisted endovascular navigation, particularly in scenarios where contrast agents are unsuitable. While state-of-the-art deep learning…

图像与视频处理 · 电气工程与系统科学 2024-02-07 Qixiang Ma , Antoine Lucas , Adrien Kaladji , Pascal Haigron

The objective of this study was to develop a PET tumor-segmentation framework that addresses the challenges of limited spatial resolution, high image noise, and lack of clinical training data with ground-truth tumor boundaries in PET…

Attenuation correction is an essential requirement of positron emission tomography (PET) image reconstruction to allow for accurate quantification. However, attenuation correction is particularly challenging for PET-MRI as neither PET nor…

Purpose: The distribution of visceral adipose tissue (VAT) in cystectomy patients is indicative of the incidence of post-operative complications. Existing VAT segmentation methods for computed tomography (CT) employing intensity…

图像与视频处理 · 电气工程与系统科学 2025-05-13 Thomas Boucher , Nicholas Tetlow , Annie Fung , Amy Dewar , Pietro Arina , Sven Kerneis , John Whittle , Evangelos B. Mazomenos

Clinical SPECT-MPI images of 345 patients acquired from a dedicated cardiac SPECT in list-mode format were retrospectively employed to predict normal-dose images from low-dose data at the half, quarter, and one-eighth-dose levels. A…

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

Tumor segmentation in oncological PET is challenging, a major reason being the partial-volume effects that arise due to low system resolution and finite voxel size. The latter results in tissue-fraction effects, i.e. voxels contain a…

Robust quantification of pulmonary emphysema on computed tomography (CT) remains challenging for large-scale research studies that involve scans from different scanner types and for translation to clinical scans. Existing studies have…

计算机视觉与模式识别 · 计算机科学 2024-03-07 Xuzhe Zhang , Elsa D. Angelini , Eric A. Hoffman , Karol E. Watson , Benjamin M. Smith , R. Graham Barr , Andrew F. Laine

Photomultiplier tubes (PMTs) are widely employed in particle and nuclear physics experiments. The accuracy of PMT waveform reconstruction directly impacts the detector's spatial and energy resolution. A key challenge arises when multiple…

高能物理 - 实验 · 物理学 2026-02-06 Kainan Liu , Jingyu Huang , Guihong Huang , Jianyi Luo

This study was conducted to develop a computer-aided detection (CAD) system for triaging patients with pulmonary embolism (PE). The purpose of the system was to reduce the death rate during the waiting period. Computed tomography pulmonary…

图像与视频处理 · 电气工程与系统科学 2022-04-08 Ching-Yuan Yu , Ming-Che Chang , Yun-Chien Cheng , Chin Kuo

Background: Enlargement of perivascular spaces (PVS) is common in neurodegenerative disorders including cerebral small vessel disease, Alzheimer's disease, and Parkinson's disease. PVS enlargement may indicate impaired clearance pathways…

图像与视频处理 · 电气工程与系统科学 2025-02-17 William Pham , Alexander Jarema , Donggyu Rim , Zhibin Chen , Mohamed S. H. Khlif , Vaughan G. Macefield , Luke A. Henderson , Amy Brodtmann

Purpose: To develop CADIA, a supervised deep learning model based on a region proposal network coupled with a false-positive reduction module for the detection and localization of intracranial aneurysms (IA) from computed tomography…

图像与视频处理 · 电气工程与系统科学 2021-12-16 Dufan Wu , Daniel Montes , Ziheng Duan , Yangsibo Huang , Javier M. Romero , Ramon Gilberto Gonzalez , Quanzheng Li

Pneumothorax, the abnormal accumulation of air in the pleural space, can be life-threatening if undetected. Chest X-rays are the first-line diagnostic tool, but small cases may be subtle. We propose an automated deep-learning pipeline using…

计算机视觉与模式识别 · 计算机科学 2025-09-05 Alvaro Aranibar Roque , Helga Sebastian

We propose a deep learning-based technique for detection and quantification of abdominal aortic aneurysms (AAAs). The condition, which leads to more than 10,000 deaths per year in the United States, is asymptomatic, often detected…

Versatile medical image segmentation (VMIS) targets the segmentation of multiple classes, while obtaining full annotations for all classes is often impractical due to the time and labor required. Leveraging partially labeled datasets (PLDs)…

计算机视觉与模式识别 · 计算机科学 2025-09-08 Shengqian Zhu , Jiafei Wu , Xiaogang Xu , Chengrong Yu , Ying Song , Zhang Yi , Guangjun Li , Junjie Hu

CT perfusion imaging (CTP) is used in the diagnostic workup of acute ischemic stroke (AIS). CTP may be performed within the angio suite using flat detector CT (FDCT) to help reduce patient management time. In order to significantly improve…

医学物理 · 物理学 2022-04-21 Vojtěch Kulvait , Philip Hoelter , Robert Frysch , Hana Haseljić , Arnd Doerfler , Georg Rose

Todays, researchers in the field of Pulmonary Embolism (PE) analysis need to use a publicly available dataset to assess and compare their methods. Different systems have been designed for the detection of pulmonary embolism (PE), but none…

计算机视觉与模式识别 · 计算机科学 2017-07-06 Mojtaba Masoudi , Hamidreza Pourreza , Mahdi Saadatmand Tarzjan , Fateme Shafiee Zargar , Masoud Pezeshki Rad , Noushin Eftekhari

This paper presents a deep learning framework for image classification aimed at increasing predictive performance for Cytotoxic Edema (CE) diagnosis in infants and children. The proposed framework includes two 3D network architectures…

Recent research on COVID-19 suggests that CT imaging provides useful information to assess disease progression and assist diagnosis, in addition to help understanding the disease. There is an increasing number of studies that propose to use…

Background: To develop an artificial intelligence system that can accurately identify acute non-traumatic intracranial hemorrhage (ICH) etiology based on non-contrast CT (NCCT) scans and investigate whether clinicians can benefit from it in…

图像与视频处理 · 电气工程与系统科学 2023-02-03 Meng Zhao , Yifan Hu , Ruixuan Jiang , Yuanli Zhao , Dong Zhang , Yan Zhang , Rong Wang , Yong Cao , Qian Zhang , Yonggang Ma , Jiaxi Li , Shaochen Yu , Wenjie Li , Ran Zhang , Yefeng Zheng , Shuo Wang , Jizong Zhao