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Artificial intelligence (AI) classification holds promise as a novel and affordable screening tool for clinical management of ocular diseases. Rural and underserved areas, which suffer from lack of access to experienced ophthalmologists may…

定量方法 · 定量生物学 2019-06-19 Minhaj Alam , David Le , Jennifer I. Lim , R. V. P. Chan , Xincheng Yao

Optical coherence tomography angiography (OCTA) is a noninvasive imaging technique that can reveal high-resolution retinal vessels. In this work, we propose an accurate and efficient neural network for retinal vessel segmentation in OCTA…

图像与视频处理 · 电气工程与系统科学 2023-09-19 Haojian Ning , Chengliang Wang , Xinrun Chen , Shiying Li

Coronary computed tomography angiography (CCTA) provides detailed an-atomical information on all chambers of the heart. Existing segmentation tools can label the gross anatomy, but addition of application-specific labels can require…

图像与视频处理 · 电气工程与系统科学 2021-11-19 Hao Xu , Steven A. Niederer , Steven E. Williams , David E. Newby , Michelle C. Williams , Alistair A. Young

Segmenting specific targets or biomarkers is necessary to analyze optical coherence tomography angiography (OCTA) images. Previous methods typically segment all the targets in an OCTA sample, such as retinal vessels (RVs). Although these…

机器学习 · 计算机科学 2024-03-21 Xinrun Chen , Chengliang Wang , Haojian Ning , Shiying Li , Mei Shen

Coronary artery segmentation on coronary-computed tomography angiography (CCTA) images is crucial for clinical use. Due to the expertise-required and labor-intensive annotation process, there is a growing demand for the relevant…

计算机视觉与模式识别 · 计算机科学 2023-07-11 Zheng Zhang , Xiaolei Zhang , Yaolei Qi , Guanyu Yang

Despite significant advances in artificial intelligence (AI) for computer vision, its application in medical imaging has been limited by the burden and limits of expert-generated labels. We used images from optical coherence tomography…

计算机视觉与模式识别 · 计算机科学 2018-02-27 Cecilia S. Lee , Ariel J. Tyring , Yue Wu , Sa Xiao , Ariel S. Rokem , Nicolaas P. Deruyter , Qinqin Zhang , Adnan Tufail , Ruikang K. Wang , Aaron Y. Lee

Optical Coherence Tomography (OCT) is an emerging technique in the field of biomedical imaging, with applications in ophthalmology, dermatology, coronary imaging etc. OCT images usually suffer from a granular pattern, called speckle noise,…

计算机视觉与模式识别 · 计算机科学 2016-05-25 Ahmadreza Baghaie , Roshan M. D'souza , Zeyun Yu

Intravascular ultrasound and optical coherence tomography are widely available for characterizing coronary stenoses and provide critical vessel parameters to optimize percutaneous intervention. Intravascular polarization-sensitive optical…

图像与视频处理 · 电气工程与系统科学 2022-09-15 Mohammad Haft-Javaherian , Martin Villiger , Kenichiro Otsuka , Joost Daemen , Peter Libby , Polina Golland , Brett E. Bouma

Accurate coronary artery segmentation from coronary computed tomography angiography is essential for quantitative coronary analysis and clinical decision support. Nevertheless, reliable segmentation remains challenging because of small…

计算机视觉与模式识别 · 计算机科学 2025-12-16 Huan Huang , Michele Esposito , Chen Zhao

Coronary artery disease (CAD) remains a leading cause of mortality worldwide, requiring accurate segmentation and stenosis detection using Coronary Computed Tomography angiography (CCTA). Existing methods struggle with challenges such as…

计算机视觉与模式识别 · 计算机科学 2025-04-29 Ni Yao , Xiangyu Liu , Danyang Sun , Chuang Han , Yanting Li , Jiaofen Nan , Chengyang Li , Fubao Zhu , Weihua Zhou , Chen Zhao

Optical Coherence Tomography Angiography (OCTA) is a crucial tool in the clinical screening of retinal diseases, allowing for accurate 3D imaging of blood vessels through non-invasive scanning. However, the hardware-based approach for…

图像与视频处理 · 电气工程与系统科学 2024-08-22 Shuhan Li , Dong Zhang , Xiaomeng Li , Chubin Ou , Lin An , Yanwu Xu , Kwang-Ting Cheng

The key manifestation of coronary artery disease (CAD) is development of fibroatheromatous plaque, the cap of which may rupture and subsequently lead to coronary artery blocking and heart attack. As such, quantitative analysis of coronary…

图像与视频处理 · 电气工程与系统科学 2024-09-17 Yaopeng Peng , Zhi Chen , Andreas Wahle , Tomas Kovarnik , Milan Sonk , Danny Z. Chen

This study presents a dataset consisting of 268 retinal images from 179 individuals, including 133 left-eye and 135 right-eye images, collected from Natasha Eye Care and Research Institute in Pune, Maharashtra, India. The images were…

图像与视频处理 · 电气工程与系统科学 2024-09-09 Pooja Bidwai , Shilpa Gite , Biswajeet Pradhan , Aditi Gupta , Kishore pahuja

In OCT angiography (OCTA), decorrelation computation has been widely used as a local motion index to identify dynamic flow from static tissues, but its dependence on SNR severely degrades the vascular visibility, particularly in low- SNR…

医学物理 · 物理学 2019-04-16 Luzhe Huang , Yiming Fu , Ruixiang Chen , Shanshan Yang , Haixia Qiu , Xining Wu , Shiyong Zhao , Ying Gu , Peng Li

We investigated the feasibility and advantages of using non-contrast CT calcium score (CTCS) images to assess pericoronary adipose tissue (PCAT) and its association with major adverse cardiovascular events (MACE). PCAT features from…

Ultra-wide optical coherence tomography angiography (UW-OCTA) is an emerging imaging technique that offers significant advantages over traditional OCTA by providing an exceptionally wide scanning range of up to 24 x 20 $mm^{2}$, covering…

图像与视频处理 · 电气工程与系统科学 2023-11-20 Hao Wei , Peilun Shi , Guitao Bai , Minqing Zhang , Shuangle Li , Wu Yuan

Coronary Computed Tomography Angiography (CCTA) evaluation of chest-pain patients in an Emergency Department (ED) is considered appropriate. While a negative CCTA interpretation supports direct patient discharge from an ED, labor-intensive…

At the present time Optical Coherence Tomography (OCT) is among the most commonly used non-invasive imaging methods for the acquisition of large volumetric scans of human retinal tissues and vasculature. To resolve decisive information from…

计算机视觉与模式识别 · 计算机科学 2021-11-02 D. Sitenko , B. Boll , C. Schnörr

A polarization-multiplexed, dual-beam setup is proposed to expand the field of view for a swept source optical coherence tomography angiography (OCTA) system. This method used a Wollaston prism to split sample path light into two…

医学物理 · 物理学 2017-10-30 Jianlong Yang , Rahul Chandwani , Rui Zhao , Zhuo Wang , Yali Jia , David Huang , Gangjun Liu

Optical coherence tomography angiography (OCTA) can visualize vasculature structures, but provides limited information about the blood flow speeds. Here, we present a second generation variable interscan time analysis (VISTA) OCTA, which…