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In this work, we present a novel convolutional neural net- work based method for perfusion map generation in dynamic suscepti- bility contrast-enhanced perfusion imaging. The proposed architecture is trained end-to-end and solely relies on…

Computer Vision and Pattern Recognition · Computer Science 2018-06-12 Andreas Hess , Raphael Meier , Johannes Kaesmacher , Simon Jung , Fabien Scalzo , David Liebeskind , Roland Wiest , Richard McKinley

The CT perfusion (CTP) is a medical exam for measuring the passage of a bolus of contrast solution through the brain on a pixel-by-pixel basis. The objective is to draw "perfusion maps" (namely cerebral blood volume, cerebral blood flow and…

Image and Video Processing · Electrical Eng. & Systems 2022-08-02 Daniele Perlo , Enzo Tartaglione , Umberto Gava , Federico D'Agata , Edwin Benninck , Mauro Bergui

Purpose: In this study we investigate whether a Convolutional Neural Network (CNN) can generate clinically relevant parametric maps from CT perfusion data in a clinical setting of patients with acute ischemic stroke. Methods: Training of…

Image and Video Processing · Electrical Eng. & Systems 2021-01-18 Umberto A. Gava , Federico D'Agata , Enzo Tartaglione , Marco Grangetto , Francesca Bertolino , Ambra Santonocito , Edwin Bennink , Mauro Bergui

Infarcted brain tissue resulting from acute stroke readily shows up as hyperintense regions within diffusion-weighted magnetic resonance imaging (DWI). It has also been proposed that computed tomography perfusion (CTP) could alternatively…

Image and Video Processing · Electrical Eng. & Systems 2019-05-01 Jonathan Rubin , S. Mazdak Abulnaga

CT Perfusion (CTP) imaging has gained importance in the diagnosis of acute stroke. Conventional perfusion analysis performs a deconvolution of the measurements and thresholds the perfusion parameters to determine the tissue status. We…

In the current era of generative AI breakthroughs, generating panoramic scenes from a single input image remains a key challenge. Most existing methods use diffusion-based iterative or simultaneous multi-view inpainting. However, the lack…

Computer Vision and Pattern Recognition · Computer Science 2024-06-05 Zhipeng Cai , Matthias Mueller , Reiner Birkl , Diana Wofk , Shao-Yen Tseng , JunDa Cheng , Gabriela Ben-Melech Stan , Vasudev Lal , Michael Paulitsch

CT perfusion (CTP) has been used to triage ischemic stroke patients in the early stage, because of its speed, availability, and lack of contraindications. Perfusion parameters including cerebral blood volume (CBV), cerebral blood flow…

Image and Video Processing · Electrical Eng. & Systems 2019-06-07 Tao Song

Few-shot anomaly generation is a key challenge in industrial quality control. Although diffusion models are promising, existing methods struggle: global prompt-guided approaches corrupt normal regions, and existing inpainting-based methods…

Computer Vision and Pattern Recognition · Computer Science 2026-04-30 JaeHyuck Choi , MinJun Kim , Je Hyeong Hong

Stroke is a leading cause of disability and death. Effective treatment decisions require early and informative vascular imaging. 4D perfusion imaging is ideal but rarely available within the first hour after stroke, whereas plain CT and CTA…

Computer Vision and Pattern Recognition · Computer Science 2024-04-08 Chayanin Tangwiriyasakul , Pedro Borges , Stefano Moriconi , Paul Wright , Yee-Haur Mah , James Teo , Parashkev Nachev , Sebastien Ourselin , M. Jorge Cardoso

Focal deficits in ischaemic stroke result from impaired perfusion downstream of a critical vascular occlusion. While parenchymal lesions are traditionally used to predict clinical deficits, the underlying pattern of disrupted perfusion…

While contrast-enhanced CT (CECT) is standard for assessing abdominal aortic aneurysms (AAA), the required iodinated contrast agents pose significant risks, including nephrotoxicity, patient allergies, and environmental harm. To reduce…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Yuxuan Ou , Ning Bi , Jiazhen Pan , Jiancheng Yang , Boliang Yu , Usama Zidan , Regent Lee , Vicente Grau

Computed tomography perfusion (CTP) and magnetic resonance perfusion (MRP) are widely used in acute ischemic stroke assessment and other cerebrovascular conditions to generate quantitative maps of cerebral hemodynamics. While commercial…

Image and Video Processing · Electrical Eng. & Systems 2026-05-19 Marijn Borghouts , Ruisheng Su

Precise and fast prediction methods for ischemic areas comprised of dead tissue, core, and salvageable tissue, penumbra, in acute ischemic stroke (AIS) patients are of significant clinical interest. They play an essential role in improving…

Image and Video Processing · Electrical Eng. & Systems 2023-12-06 Luca Tomasetti , Kjersti Engan , Liv Jorunn Høllesli , Kathinka Dæhli Kurz , Mahdieh Khanmohammadi

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…

Medical Physics · Physics 2022-04-21 Vojtěch Kulvait , Philip Hoelter , Robert Frysch , Hana Haseljić , Arnd Doerfler , Georg Rose

Computed tomography (CT) is critical for various clinical applications, e.g., radiotherapy treatment planning and also PET attenuation correction. However, CT exposes radiation during acquisition, which may cause side effects to patients.…

Computer Vision and Pattern Recognition · Computer Science 2016-12-19 Dong Nie , Roger Trullo , Caroline Petitjean , Su Ruan , Dinggang Shen

Text-based image captioning (TextCap) requires simultaneous comprehension of visual content and reading the text of images to generate a natural language description. Although a task can teach machines to understand the complex human…

Computer Vision and Pattern Recognition · Computer Science 2022-03-07 Wenqiao Zhang , Haochen Shi , Jiannan Guo , Shengyu Zhang , Qingpeng Cai , Juncheng Li , Sihui Luo , Yueting Zhuang

In radiation therapy (RT), the reliance on pre-treatment computed tomography (CT) images encounter challenges due to anatomical changes, necessitating adaptive planning. Daily cone-beam CT (CBCT) imaging, pivotal for therapy adjustment,…

Computer Vision and Pattern Recognition · Computer Science 2024-09-20 Joonil Hwang , Sangjoon Park , NaHyeon Park , Seungryong Cho , Jin Sung Kim

Advance Persistent Threats (APTs), adopted by most delicate attackers, are becoming increasing common and pose great threat to various enterprises and institutions. Data provenance analysis on provenance graphs has emerged as a common…

Cryptography and Security · Computer Science 2023-10-17 Zian Jia , Yun Xiong , Yuhong Nan , Yao Zhang , Jinjing Zhao , Mi Wen

Accurately translating medical images between different modalities, such as Computed Tomography (CT) to Magnetic Resonance Imaging (MRI), has numerous downstream clinical and machine learning applications. While several methods have been…

Image and Video Processing · Electrical Eng. & Systems 2025-12-03 Yuwen Chen , Nicholas Konz , Hanxue Gu , Haoyu Dong , Yaqian Chen , Lin Li , Jisoo Lee , Maciej A. Mazurowski

Dynamic susceptibility contrast magnetic resonance imaging (DSC-MRI) is widely used to evaluate acute ischemic stroke to distinguish salvageable tissue and infarct core. For this purpose, traditional methods employ deconvolution techniques,…

Image and Video Processing · Electrical Eng. & Systems 2023-12-12 Anbo Cao , Pin-Yu Le , Zhonghui Qie , Haseeb Hassan , Yingwei Guo , Asim Zaman , Jiaxi Lu , Xueqiang Zeng , Huihui Yang , Xiaoqiang Miao , Taiyu Han , Guangtao Huang , Yan Kang , Yu Luo , Jia Guo
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