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We evaluated the temporal performance of a deep learning (DL) based artificial intelligence (AI) model for auto segmentation in prostate radiotherapy, seeking to correlate its efficacy with changes in clinical landscapes. Our study involved…

Image and Video Processing · Electrical Eng. & Systems 2023-11-17 Biling Wang , Michael Dohopolski , Ti Bai , Junjie Wu , Raquibul Hannan , Neil Desai , Aurelie Garant , Daniel Yang , Dan Nguyen , Mu-Han Lin , Robert Timmerman , Xinlei Wang , Steve Jiang

Automated prostate segmentation in MRI is highly demanded for computer-assisted diagnosis. Recently, a variety of deep learning methods have achieved remarkable progress in this task, usually relying on large amounts of training data. Due…

Image and Video Processing · Electrical Eng. & Systems 2020-02-20 Quande Liu , Qi Dou , Lequan Yu , Pheng Ann Heng

Fully Convolutional Neural Networks (FCNNs) with contracting and expanding paths have shown prominence for the majority of medical image segmentation applications since the past decade. In FCNNs, the encoder plays an integral role by…

Image and Video Processing · Electrical Eng. & Systems 2021-10-12 Ali Hatamizadeh , Yucheng Tang , Vishwesh Nath , Dong Yang , Andriy Myronenko , Bennett Landman , Holger Roth , Daguang Xu

Purpose: A conventional 2D UNet convolutional neural network (CNN) architecture may result in ill-defined boundaries in segmentation output. Several studies imposed stronger constraints on each level of UNet to improve the performance of 2D…

Background: Accurate deformable image registration (DIR) is required for contour propagation and dose accumulation in MR-guided adaptive radiotherapy (MRgART). This study trained and evaluated a deep learning DIR method for domain invariant…

An accurate prostate delineation and volume characterization can support the clinical assessment of prostate cancer. A large amount of automatic prostate segmentation tools consider exclusively the axial MRI direction in spite of the…

Image and Video Processing · Electrical Eng. & Systems 2023-09-18 Tim Nikolass Lindeijer , Tord Martin Ytredal , Trygve Eftestøl , Tobias Nordström , Fredrik Jäderling , Martin Eklund , Alvaro Fernandez-Quilez

Brain tumor segmentation from multiple Magnetic Resonance Imaging (MRI) modalities is a challenging task in medical image computation. The main challenges lie in the generalizability to a variety of scanners and imaging protocols. In this…

Image and Video Processing · Electrical Eng. & Systems 2022-10-04 Lucas Fidon , Suprosanna Shit , Ivan Ezhov , Johannes C. Paetzold , Sébastien Ourselin , Tom Vercauteren

Computer aided pathological analysis has been the gold standard for tumor diagnosis, however domain shift is a significant problem in histopathology. It may be caused by variability in anatomical structures, tissue preparation, and imaging…

Image and Video Processing · Electrical Eng. & Systems 2024-09-25 Abdul Qayyum , Moona Mazher Imran Razzak , Steven A Niederer

Prostate cancer is a dominant health concern calling for advanced diagnostic tools. Utilizing digital pathology and artificial intelligence, this study explores the potential of 11 deep neural network architectures for automated Gleason…

Over the past two decades, machine analysis of medical imaging has advanced rapidly, opening up significant potential for several important medical applications. As complicated diseases increase and the number of cases rises, the role of…

Image and Video Processing · Electrical Eng. & Systems 2024-05-08 Fares Bougourzi , Fadi Dornaika , Cosimo Distante , Abdelmalik Taleb-Ahmed

Prostate cancer is the most common cancer among US men. However, prostate imaging is still challenging despite the advances in multi-parametric Magnetic Resonance Imaging (MRI), which provides both morphologic and functional information…

Accurate segmentation of prostate tumours from PET images presents a formidable challenge in medical image analysis. Despite considerable work and improvement in delineating organs from CT and MR modalities, the existing standards do not…

Image and Video Processing · Electrical Eng. & Systems 2024-07-16 Shrajan Bhandary , Dejan Kuhn , Zahra Babaiee , Tobias Fechter , Simon K. B. Spohn , Constantinos Zamboglou , Anca-Ligia Grosu , Radu Grosu

Models based on U-like structures have improved the performance of medical image segmentation. However, the single-layer decoder structure of U-Net is too "thin" to exploit enough information, resulting in large semantic differences between…

Image and Video Processing · Electrical Eng. & Systems 2023-09-08 Haoyuan Chen , Yufei Han , Pin Xu , Yanyi Li , Kuan Li , Jianping Yin

Prostate radiotherapy is a well established curative oncology modality, which in future will use Magnetic Resonance Imaging (MRI)-based radiotherapy for daily adaptive radiotherapy target definition. However the time needed to delineate the…

Image and Video Processing · Electrical Eng. & Systems 2020-11-17 David Gillespie , Connah Kendrick , Ian Boon , Cheng Boon , Tim Rattay , Moi Hoon Yap

Vision Transformers (ViT)s have shown great performance in self-supervised learning of global and local representations that can be transferred to downstream applications. Inspired by these results, we introduce a novel self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Yucheng Tang , Dong Yang , Wenqi Li , Holger Roth , Bennett Landman , Daguang Xu , Vishwesh Nath , Ali Hatamizadeh

Data augmentation refers to a group of techniques whose goal is to battle limited amount of available data to improve model generalization and push sample distribution toward the true distribution. While different augmentation strategies…

Quantitative Methods · Quantitative Biology 2020-06-03 Ruqian Hao , Khashayar Namdar , Lin Liu , Masoom A. Haider , Farzad Khalvati

Whole gland (WG) segmentation of the prostate plays a crucial role in detection, staging and treatment planning of prostate cancer (PCa). Despite promise shown by deep learning (DL) methods, they rely on the availability of a considerable…

Image and Video Processing · Electrical Eng. & Systems 2021-07-23 Alvaro Fernandez-Quilez , Steinar Valle Larsen , Morten Goodwin , Thor Ole Gulsurd , Svein Reidar Kjosavik , Ketil Oppedal

We propose a fast beam orientation selection method, based on deep neural networks (DNN), capable of developing a plan comparable to those by the state-of-the-art column generation method. The novelty of Our model lies in its supervised…

Medical Physics · Physics 2019-12-23 Azar Sadeghnejad Barkousaraie , Olalekan Ogunmolu , Steve Jiang , Dan Nguyen

In this paper, we proposed a novel architecture of convolutional neural network (CNN), namely Z-net, for segmenting prostate from magnetic resonance images (MRIs). In the proposed Z-net, 5 pairs of Z-block and decoder Z-block with different…

Image and Video Processing · Electrical Eng. & Systems 2019-01-21 Yue Zhang , Jiong Wu , Wanli Chen , Yifan Chen , Xiaoying Tang

Learning-based fluence map prediction offers a fast alternative to iterative inverse planning in intensity-modulated radiation therapy (IMRT), but its robustness under realistic distribution shifts remains unclear. We study a two-stage…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Ujunwa Mgboh , Rafi Ibn Sultan , Joshua Kim , Kundan Thind , Dongxiao Zhu