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Two segmentation methods, one atlas-based and one neural-network-based, were compared to see how well they can each automatically segment the brain stem and cerebellum in Displacement Encoding with Stimulated Echoes Magnetic Resonance…

Image and Video Processing · Electrical Eng. & Systems 2021-09-30 Elle Buser , Emma Hart , Ben Huenemann

Segmentation has been a major task in neuroimaging. A large number of automated methods have been developed for segmenting healthy and diseased brain tissues. In recent years, deep learning techniques have attracted a lot of attention as a…

Image and Video Processing · Electrical Eng. & Systems 2019-07-05 Jimit Doshi , Guray Erus , Mohamad Habes , Christos Davatzikos

Registration of images with pathologies is challenging due to tissue appearance changes and missing correspondences caused by the pathologies. Moreover, mass effects as observed for brain tumors may displace tissue, creating larger…

Image and Video Processing · Electrical Eng. & Systems 2020-08-19 Xu Han , Zhengyang Shen , Zhenlin Xu , Spyridon Bakas , Hamed Akbari , Michel Bilello , Christos Davatzikos , Marc Niethammer

Intra-operative ultrasound is an increasingly important imaging modality in neurosurgery. However, manual interaction with imaging data during the procedures, for example to select landmarks or perform segmentation, is difficult and can be…

Computer Vision and Pattern Recognition · Computer Science 2019-04-19 Julia Rackerseder , Rüdiger Göbl , Nassir Navab , Christoph Hennersperger

Automated organ at risk (OAR) segmentation is crucial for radiation therapy planning in CT scans, but the generated contours by automated models can be inaccurate, potentially leading to treatment planning issues. The reasons for these…

Image and Video Processing · Electrical Eng. & Systems 2023-08-22 Amin Honarmandi Shandiz , Attila Rádics , Rajesh Tamada , Makk Árpád , Karolina Glowacka , Lehel Ferenczi , Sandeep Dutta , Michael Fanariotis

Cone-beam CT (CBCT)-based online adaptive radiotherapy calls for accurate auto-segmentation to reduce the time cost for physicians to edit contours. However, deep learning (DL)-based direct segmentation of CBCT images is a challenging task,…

Medical Physics · Physics 2023-02-22 Xiao Liang , Howard Morgan , Ti Bai , Michael Dohopolski , Dan Nguyen , Steve Jiang

Radiotherapy is a treatment where radiation is used to eliminate cancer cells. The delineation of organs-at-risk (OARs) is a vital step in radiotherapy treatment planning to avoid damage to healthy organs. For nasopharyngeal cancer, more…

Image and Video Processing · Electrical Eng. & Systems 2021-04-06 Yunhe Gao , Rui Huang , Yiwei Yang , Jie Zhang , Kainan Shao , Changjuan Tao , Yuanyuan Chen , Dimitris N. Metaxas , Hongsheng Li , Ming Chen

This work proposes a multimodal diffeomorphic registration method using Neural Ordinary Differential Equations (Neural ODEs). Nonrigid registration algorithms exhibit tradeoffs between their accuracy, the computational complexity of their…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Salvador Rodriguez-Sanz , Monica Hernandez

Automatic organ segmentation is an important yet challenging problem for medical image analysis. The pancreas is an abdominal organ with very high anatomical variability. This inhibits previous segmentation methods from achieving high…

Computer Vision and Pattern Recognition · Computer Science 2015-06-23 Holger R. Roth , Le Lu , Amal Farag , Hoo-Chang Shin , Jiamin Liu , Evrim Turkbey , Ronald M. Summers

With the development of image segmentation in computer vision, biomedical image segmentation have achieved remarkable progress on brain tumor segmentation and Organ At Risk (OAR) segmentation. However, most of the research only uses single…

Image and Video Processing · Electrical Eng. & Systems 2019-10-18 Kuan-Lun Tseng , Winston Hsu , Chun-ting Wu , Ya-Fang Shih , Fan-Yun Sun

The performance of supervised deep learning methods for medical image segmentation is often limited by the scarcity of labeled data. As a promising research direction, semi-supervised learning addresses this dilemma by leveraging unlabeled…

Image and Video Processing · Electrical Eng. & Systems 2024-05-13 Zihang Liu , Chunhui Zhao

Target segmentation in CT images of Head&Neck (H&N) region is challenging due to low contrast between adjacent soft tissue. The SegRap 2023 challenge has been focused on benchmarking the segmentation algorithms of Nasopharyngeal Carcinoma…

Image and Video Processing · Electrical Eng. & Systems 2023-10-05 Mehdi Astaraki , Simone Bendazzoli , Iuliana Toma-Dasu

The success of deep convolutional neural networks on image classification and recognition tasks has led to new applications in very diversified contexts, including the field of medical imaging. In this paper we investigate and propose…

Computer Vision and Pattern Recognition · Computer Science 2018-02-14 Alexey A. Novikov , Dimitrios Lenis , David Major , Jiri Hladůvka , Maria Wimmer , Katja Bühler

Accurate and robust segmentation of abdominal organs on CT is essential for many clinical applications such as computer-aided diagnosis and computer-aided surgery. But this task is challenging due to the weak boundaries of organs, the…

Computer Vision and Pattern Recognition · Computer Science 2019-04-19 Yan Wang , Yuyin Zhou , Wei Shen , Seyoun Park , Elliot K. Fishman , Alan L. Yuille

Semi-supervised learning relaxes the need of large pixel-wise labeled datasets for image segmentation by leveraging unlabeled data. A prominent way to exploit unlabeled data is to regularize model predictions. Since the predictions of…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Sukesh Adiga , Jose Dolz , Herve Lombaert

Deep learning has shown great promise in the ability to automatically annotate organs in magnetic resonance imaging (MRI) scans, for example, of the brain. However, despite advancements in the field, the ability to accurately segment…

Image and Video Processing · Electrical Eng. & Systems 2024-03-26 Cosmin Ciausu , Deepa Krishnaswamy , Benjamin Billot , Steve Pieper , Ron Kikinis , Andrey Fedorov

Automated pathology segmentation remains a valuable diagnostic tool in clinical practice. However, collecting training data is challenging. Semi-supervised approaches by combining labelled and unlabelled data can offer a solution to data…

Image and Video Processing · Electrical Eng. & Systems 2020-09-09 Haochuan Jiang , Agisilaos Chartsias , Xinheng Zhang , Giorgos Papanastasiou , Scott Semple , Mark Dweck , David Semple , Rohan Dharmakumar , Sotirios A. Tsaftaris

Segmenting deep brain structures from magnetic resonance images is important for patient diagnosis, surgical planning, and research. Most current state-of-the-art solutions follow a segmentation-by-registration approach, where subject MRIs…

Image and Video Processing · Electrical Eng. & Systems 2022-05-20 Mehri Baniasadi , Mikkel V. Petersen , Jorge Goncalves , Andreas Horn , Vanja Vlasov , Frank Hertel , Andreas Husch

Head and neck tumors and metastatic lymph nodes are crucial for treatment planning and prognostic analysis. Accurate segmentation and quantitative analysis of these structures require pixel-level annotation, making automated segmentation…

Image and Video Processing · Electrical Eng. & Systems 2025-04-01 Litingyu Wang , Wenjun Liao , Shichuan Zhang , Guotai Wang

Deep-learning (DL) based methods are playing an important role in the task of abdominal organs and tumors segmentation in CT scans. However, the large requirements of annotated datasets heavily limit its development. The FLARE23 challenge…

Image and Video Processing · Electrical Eng. & Systems 2023-10-03 Jiaxin Zhuang , Luyang Luo , Zhixuan Chen , Linshan Wu