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An MRI-only adaptive radiotherapy (ART) workflow is desirable for managing interfractional changes in anatomy, but producing synthetic CT (sCT) data through paired data-driven deep learning (DL) for abdominal dose calculations remains a…

For whole-body (WB) kinetic modeling based on a typical PET scanner, a multi-pass multi-bed scanning protocol is necessary given the limited axial field-of-view. Such a protocol introduces loss of early-dynamics in time-activity curves…

医学物理 · 物理学 2024-05-14 Kyung-Nam Lee , Arman Rahmim , Carlos Uribe

Mammography is the most effective and available tool for breast cancer screening. However, the low positive predictive value of breast biopsy resulting from mammogram interpretation leads to approximately 70% unnecessary biopsies with…

机器学习 · 计算机科学 2013-06-04 Sahar A. Mokhtar , Alaa. M. Elsayad

Prostate cancer is a leading health concern among men, requiring accurate and accessible methods for early detection and risk stratification. Prostate volume (PV) is a key parameter in multivariate risk stratification for early prostate…

图像与视频处理 · 电气工程与系统科学 2025-02-13 Tiziano Natali , Liza M. Kurucz , Matteo Fusaglia , Laura S. Mertens , Theo J. M. Ruers , Pim J. van Leeuwen , Behdad Dashtbozorg

Speed-of-sound (SoS) is a biomechanical characteristic of tissue, and its imaging can provide a promising biomarker for diagnosis. Reconstructing SoS images from ultrasound acquisitions can be cast as a limited-angle computed-tomography…

计算机视觉与模式识别 · 计算机科学 2025-04-16 Sonia Laguna , Lin Zhang , Can Deniz Bezek , Monika Farkas , Dieter Schweizer , Rahel A. Kubik-Huch , Orcun Goksel

Breast cancer is the most prevalent cancer among women and predicting pathologic complete response (pCR) after anti-cancer treatment is crucial for patient prognosis and treatment customization. Deep learning has shown promise in medical…

图像与视频处理 · 电气工程与系统科学 2024-10-02 Jonghun Kim , Hyunjin Park

Consistency and duplicability in Computed Tomography (CT) output is essential to quantitative imaging for lung cancer detection and monitoring. This study of CT-detected lung nodules investigated the reproducibility of volume-, density-,…

Current medical image segmentation relies on the region-based (Dice, F1-score) and boundary-based (Hausdorff distance, surface distance) metrics as the de-facto standard. While these metrics are widely used, they lack a unified…

图像与视频处理 · 电气工程与系统科学 2024-05-15 Zheyuan Zhang , Ulas Bagci

Full Waveform Inversion (FWI) is a powerful wave-based imaging technique, but its inherent ill-posedness and non-convexity lead to local minima and poor convergence. Regularization methods stabilize FWI by incorporating prior information…

地球物理 · 物理学 2025-10-28 Kamal Aghazade , Ali Gholami

Transformer models have demonstrated the capability to produce highly accurate segmentation of organs and tumors. However, model training requires high-quality curated datasets to ensure robust generalization to unseen datasets. Hence, we…

Ultrasound computed tomography (USCT) is a promising technique that achieves superior medical imaging reconstruction resolution by fully leveraging waveform information, outperforming conventional ultrasound methods. Despite its advantages,…

图像与视频处理 · 电气工程与系统科学 2024-07-23 Yi Sheng , Hanchen Wang , Yipei Liu , Junhuan Yang , Weiwen Jiang , Youzuo Lin , Lei Yang

We propose a new computer aided detection framework for tumours acquired on DCE-MRI (Dynamic Contrast Enhanced Magnetic Resonance Imaging) series on small animals. In this approach we consider DCE-MRI series as multivariate images. A full…

图像与视频处理 · 电气工程与系统科学 2019-10-29 Guillaume Noyel , Jesus Angulo , Dominique Jeulin , Daniel Balvay , Charles-André Cuenod

Automatic tumor segmentation of breast ultrasound (BUS) image is quite challenging due to the complicated anatomic structure of breast and poor image quality. Most tumor segmentation approaches achieve good performance on BUS images…

计算机视觉与模式识别 · 计算机科学 2018-06-29 Fei Xu , Min Xian , Yingtao Zhang , Kuan Huang , H. D. Cheng , Boyu Zhang , Jianrui Ding , Chunping Ning , Ying Wang

Breast cancer was diagnosed for over 7.8 million women between 2015 to 2020. Grading plays a vital role in breast cancer treatment planning. However, the current tumor grading method involves extracting tissue from patients, leading to…

图像与视频处理 · 电气工程与系统科学 2024-05-14 Chi-en Amy Tai , Alexander Wong

7 Tesla (7T) apparent diffusion coefficient (ADC) maps derived from diffusion-weighted imaging (DWI) demonstrate improved image quality and spatial resolution over 3 Tesla (3T) ADC maps. However, 7T magnetic resonance imaging (MRI)…

Ultrasound computed tomography (USCT) quantifies acoustic tissue properties such as the speed-of-sound (SOS). Although full-waveform inversion (FWI) is an effective method for accurate SOS reconstruction, it can be computationally…

图像与视频处理 · 电气工程与系统科学 2024-10-15 Gangwon Jeong , Fu Li , Trevor M. Mitcham , Umberto Villa , Nebojsa Duric , Mark A. Anastasio

Experimentally acquired microscopy images are unavoidably affected by the presence of noise and other unwanted signals, which degrade their quality and might hide relevant features. With the recent increase in image acquisition rate, modern…

图像与视频处理 · 电气工程与系统科学 2025-05-15 Marco Corrias , Giada Franceschi , Michele Riva , Alberto Tampieri , Karin Föttinger , Ulrike Diebold , Thomas Pock , Cesare Franchini

Ultrasound computed tomography (USCT) is an emerging imaging modality that holds great promise for breast imaging. Full-waveform inversion (FWI)-based image reconstruction methods incorporate accurate wave physics to produce high spatial…

图像与视频处理 · 电气工程与系统科学 2023-09-01 Luke Lozenski , Hanchen Wang , Fu Li , Mark A. Anastasio , Brendt Wohlberg , Youzuo Lin , Umberto Villa

Computational pathology and whole-slide image (WSI) analysis are pivotal in cancer diagnosis and prognosis. However, the ultra-high resolution of WSIs presents significant modeling challenges. Recent advancements in pathology foundation…

计算机视觉与模式识别 · 计算机科学 2025-03-11 Honglin Li , Zhongyi Shui , Yunlong Zhang , Chenglu Zhu , Lin Yang

Sodium magnetic resonance imaging (MRI) is sensitive and specific to ionic balance of cells owing to 10 fold difference in sodium concentration across membrane actively maintained by sodium potassium (Na+ K+) pump. Disruption of the pump…

医学物理 · 物理学 2025-08-21 Yongxian Qian , Ying-Chia Lin , Xingye Chen , Yulin Ge , Yvonne W. Lui , Fernando E. Boada