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Phase contrast transmission electron microscopy (TEM) is a powerful tool for imaging the local atomic structure of materials. TEM has been used heavily in studies of defect structures of 2D materials such as monolayer graphene due to its…

材料科学 · 物理学 2021-09-01 Robbie Sadre , Colin Ophus , Anstasiia Butko , Gunther H Weber

The Cherenkov Telescope Array (CTA) will be the world's leading ground-based gamma-ray observatory allowing us to study very high energy phenomena in the Universe. CTA will produce huge data sets, of the order of petabytes, and the…

天体物理仪器与方法 · 物理学 2018-10-02 S. Mangano , C. Delgado , M. Bernardos , M. Lallena , J. J. Rodríguez Vázquez

Medical datasets are often highly imbalanced with over-representation of common medical problems and a paucity of data from rare conditions. We propose simulation of pathology in images to overcome the above limitations. Using chest X-rays…

计算机视觉与模式识别 · 计算机科学 2018-02-13 Hojjat Salehinejad , Shahrokh Valaee , Tim Dowdell , Errol Colak , Joseph Barfett

Optical Coherence Tomography Angiography (OCTA) is a non-invasive and non-contacting imaging technique providing visualization of microvasculature of retina and optic nerve head in human eyes in vivo. The adequate image quality of OCTA is…

图像与视频处理 · 电气工程与系统科学 2021-07-23 Yufei Wang , Yiqing Shen , Meng Yuan , Jing Xu , Bin Yang , Chi Liu , Wenjia Cai , Weijing Cheng , Wei Wang

Three-dimensional Digital Subtraction Angiography (3D-DSA) is a well-established X-ray-based technique for visualizing vascular anatomy. Recently, four-dimensional DSA (4D-DSA) reconstruction algorithms have been developed to enable the…

计算机视觉与模式识别 · 计算机科学 2025-10-03 Noah Maul , Annette Birkhold , Fabian Wagner , Mareike Thies , Maximilian Rohleder , Philipp Berg , Markus Kowarschik , Andreas Maier

Generative Adversarial Networks (GAN) have shown potential in expanding limited medical imaging datasets. This study explores how different ratios of GAN-generated and real brain tumor MRI images impact the performance of a CNN in…

图像与视频处理 · 电气工程与系统科学 2025-06-23 Mahin Montasir Afif , Abdullah Al Noman , K. M. Tahsin Kabir , Md. Mortuza Ahmmed , Md. Mostafizur Rahman , Mufti Mahmud , Md. Ashraful Babu

This paper presents a method for virtual contrast enhancement in breast MRI, offering a promising non-invasive alternative to traditional contrast agent-based DCE-MRI acquisition. Using a conditional generative adversarial network, we…

图像与视频处理 · 电气工程与系统科学 2025-05-15 Richard Osuala , Smriti Joshi , Apostolia Tsirikoglou , Lidia Garrucho , Walter H. L. Pinaya , Daniel M. Lang , Julia A. Schnabel , Oliver Diaz , Karim Lekadir

Deep-learning-based automated segmentation of vascular structures in preoperative CT scans contributes to computer-assisted diagnosis and intervention procedure in vascular diseases. While CT angiography (CTA) is the common standard,…

图像与视频处理 · 电气工程与系统科学 2024-10-31 Qixiang Ma , Antoine Łucas , Huazhong Shu , Adrien Kaladji , Pascal Haigron

Computed Tomography (CT) plays a pivotal role in medical diagnosis; however, variability across reconstruction kernels hinders data-driven approaches, such as deep learning models, from achieving reliable and generalized performance. To…

图像与视频处理 · 电气工程与系统科学 2026-02-16 Francesco Di Feola , Ludovica Pompilio , Cecilia Assolito , Valerio Guarrasi , Paolo Soda

Contrast Enhanced Spectral Mammography (CESM) is a dual-energy mammographic imaging technique that first needs intravenously administration of an iodinated contrast medium; then, it collects both a low-energy image, comparable to standard…

图像与视频处理 · 电气工程与系统科学 2026-03-13 Aurora Rofena , Valerio Guarrasi , Marina Sarli , Claudia Lucia Piccolo , Matteo Sammarra , Bruno Beomonte Zobel , Paolo Soda

The purpose of this research is to develop a system that generates simulated computed tomography pulmonary angiography (CTPA) images clinically for pulmonary embolism diagnoses. Nowadays, CTPA images are the gold standard computerized…

图像与视频处理 · 电气工程与系统科学 2022-05-18 Chia-Hung Yang , Yun-Chien Cheng , Chin Kuo

Transthoracic Echocardiography (TTE) is a fundamental, non-invasive diagnostic tool in cardiovascular medicine, enabling detailed visualization of cardiac structures crucial for diagnosing various heart conditions. Despite its widespread…

人工智能 · 计算机科学 2025-08-05 Matej Gazda , Samuel Kadoury , Jakub Gazda , Peter Drotar

For optical coherence tomography angiography (OCTA) images, a limited scanning rate leads to a trade-off between field-of-view (FOV) and imaging resolution. Although larger FOV images may reveal more parafoveal vascular lesions, their…

图像与视频处理 · 电气工程与系统科学 2024-12-06 Weiwen Zhang , Dawei Yang , Haoxuan Che , An Ran Ran , Carol Y. Cheung , Hao Chen

Deep learning has potential to automate screening, monitoring and grading of disease in medical images. Pretraining with contrastive learning enables models to extract robust and generalisable features from natural image datasets,…

The chorioallantoic membrane (CAM) model is a widely used in vivo platform for studying angiogenesis, especially in relation to tumor growth, drug delivery, and vascular biology.Since the topology and morphology of developing blood vessels…

图像与视频处理 · 电气工程与系统科学 2025-09-26 Pengwu Song , Zhiping Wang , Peng Yao , Liang Xu , Shuwei Shen , Pengfei Shao , Mingzhai Sun , Ronald X. Xu

Computerized Tomography Angiography (CTA) based follow-up of Abdominal Aortic Aneurysms (AAA) treated with Endovascular Aneurysm Repair (EVAR) is essential to evaluate the progress of the patient and detect complications. In this context,…

The Computed Tomography (CT) for diagnosis of lesions in human internal organs is one of the most fundamental topics in medical imaging. Low-dose CT, which offers reduced radiation exposure, is preferred over standard-dose CT, and therefore…

图像与视频处理 · 电气工程与系统科学 2023-09-26 Wenjie Liu

Generative adversarial networks (GANs) have shown great success in applications such as image generation and inpainting. However, they typically require large datasets, which are often not available, especially in the context of prediction…

机器学习 · 计算机科学 2020-01-31 Daniel Stoller , Sebastian Ewert , Simon Dixon

Computed tomography (CT) provides highly detailed three-dimensional (3D) medical images but is costly, time-consuming, and often inaccessible in intraoperative settings (Organization et al. 2011). Recent advancements have explored…

图像与视频处理 · 电气工程与系统科学 2024-12-12 Zhaoxi Zhang , Yueliang Ying

Currently, MRI-only radiotherapy (RT) eliminates some of the concerns about using CT images in RT chains such as the registration of MR images to a separate CT, extra dose delivery, and the additional cost of repeated imaging. However, one…

医学物理 · 物理学 2021-03-03 Faeze Gholamiankhah , Samaneh Mostafapour , Hossein Arabi