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Medical image segmentation annotations exhibit variations among experts due to the ambiguous boundaries of segmented objects and backgrounds in medical images. Although using multiple annotations for each image in the fully-supervised has…

Computer Vision and Pattern Recognition · Computer Science 2023-11-20 Shuai Wang , Tengjin Weng , Jingyi Wang , Yang Shen , Zhidong Zhao , Yixiu Liu , Pengfei Jiao , Zhiming Cheng , Yaqi Wang

The destitution of image data and corresponding expert annotations limit the training capacities of AI diagnostic models and potentially inhibit their performance. To address such a problem of data and label scarcity, generative models have…

Image and Video Processing · Electrical Eng. & Systems 2022-06-28 Xiaodan Xing , Jiahao Huang , Yang Nan , Yinzhe Wu , Chengjia Wang , Zhifan Gao , Simon Walsh , Guang Yang

Medical image synthesis generates additional imaging modalities that are costly, invasive or harmful to acquire, which helps to facilitate the clinical workflow. When training pairs are substantially misaligned (e.g., lung MRI-CT pairs with…

Image and Video Processing · Electrical Eng. & Systems 2024-08-20 Bowen Xin , Tony Young , Claire E Wainwright , Tamara Blake , Leo Lebrat , Thomas Gaass , Thomas Benkert , Alto Stemmer , David Coman , Jason Dowling

To achieve magnetic resonance (MR)-only radiotherapy, a method needs to be employed to estimate a synthetic CT (sCT) for generating electron density maps and patient positioning reference images. We investigated 2D and 3D convolutional…

Medical Physics · Physics 2019-08-06 Jie Fu , Yingli Yang , Kamal Singhrao , Dan Ruan , Daniel A. Low , John H. Lewis

MR imaging is a valuable diagnostic tool allowing to non-invasively visualize patient anatomy and pathology with high soft-tissue contrast. However, MRI acquisition is typically time-consuming, leading to patient discomfort and increased…

Image and Video Processing · Electrical Eng. & Systems 2025-12-23 Jan Nikolas Morshuis , Matthias Hein , Christian F. Baumgartner

Dynamic Contrast-enhanced Magnetic Resonance Imaging (DCE-MRI) is an important tool for detecting subtle kinetic changes in cancerous tissue. Quantitative analysis of DCE-MRI typically involves the convolution of an arterial input function…

Applications · Statistics 2020-04-22 Volker J. Schmid , Brandon Whitcher , Anwar R. Padhani , Guang-Zhong Yang

Medical image synthesis has gained a great focus recently, especially after the introduction of Generative Adversarial Networks (GANs). GANs have been used widely to provide anatomically-plausible and diverse samples for augmentation and…

Image and Video Processing · Electrical Eng. & Systems 2020-02-07 Basel Alyafi , Oliver Diaz , Joan C Vilanova , Javier del Riego , Robert Marti

This paper proposes an Incremental Learning (IL) approach to enhance the accuracy and efficiency of deep learning models in analyzing T2-weighted (T2w) MRI medical images prostate cancer detection using the PI-CAI dataset. We used multiple…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Sara Yavari , Jacob Furst

Purpose: To develop a general framework for Parallel Imaging (PI) with the use of Maxwell regularization for the estimation of the sensitivity maps (SMs) and constrained optimization for the parameter-free image reconstruction. Theory and…

Image and Video Processing · Electrical Eng. & Systems 2020-08-21 Matteo Alessandro Francavilla , Stamatios Lefkimmiatis , Jorge F. Villena , Athanasios G. Polimeridis

Hematoxylin and Eosin stained histopathology image analysis is essential for the diagnosis and study of complicated diseases such as cancer. Existing state-of-the-art approaches demand extensive amount of supervised training data from…

Computer Vision and Pattern Recognition · Computer Science 2017-12-15 Le Hou , Ayush Agarwal , Dimitris Samaras , Tahsin M. Kurc , Rajarsi R. Gupta , Joel H. Saltz

We present a deep learning strategy that enables, for the first time, contrast-agnostic semantic segmentation of completely unpreprocessed brain MRI scans, without requiring additional training or fine-tuning for new modalities. Classical…

Image and Video Processing · Electrical Eng. & Systems 2021-04-09 Benjamin Billot , Douglas Greve , Koen Van Leemput , Bruce Fischl , Juan Eugenio Iglesias , Adrian V. Dalca

Generative AI models hold great potential in creating synthetic brain MRIs that advance neuroimaging studies by, for example, enriching data diversity. However, the mainstay of AI research only focuses on optimizing the visual quality (such…

Image and Video Processing · Electrical Eng. & Systems 2023-10-10 Wei Peng , Tomas Bosschieter , Jiahong Ouyang , Robert Paul , Ehsan Adeli , Qingyu Zhao , Kilian M. Pohl

The interpretation of prostate MRI suffers from low agreement across radiologists due to the subtle differences between cancer and normal tissue. Image registration addresses this issue by accurately mapping the ground-truth cancer labels…

In Magnetic Resonance Imaging (MRI), image acquisitions are often undersampled in the measurement domain to accelerate the scanning process, at the expense of image quality. However, image quality is a crucial factor that influences the…

Image and Video Processing · Electrical Eng. & Systems 2024-05-31 Mevan Ekanayake , Zhifeng Chen , Mehrtash Harandi , Gary Egan , Zhaolin Chen

A non-parametric smoothing method is presented that reduces noise in multi-wavelength imaging data sets. Using Principle Component Analysis (hereafter PCA) to associate pixels according to their $ugriz$-band colors, smoothing is done over…

Instrumentation and Methods for Astrophysics · Physics 2015-03-17 James Pizagno

Semi-supervised learning (SSL) has shown considerable potential in medical image segmentation, primarily leveraging consistency regularization and pseudo-labeling. However, many SSL approaches only pay attention to low-level consistency and…

Image and Video Processing · Electrical Eng. & Systems 2024-07-01 Guanghao Zhu , Jing Zhang , Juanxiu Liu , Xiaohui Du , Ruqian Hao , Yong Liu , Lin Liu

Magnetic Resonance Imaging (MRI) offers high-resolution \emph{in vivo} imaging and rich functional and anatomical multimodality tissue contrast. In practice, however, there are challenges associated with considerations of scanning costs,…

Computer Vision and Pattern Recognition · Computer Science 2017-05-09 Yawen Huang , Ling Shao , Alejandro F. Frangi

Segmentation of Prostate Cancer (PCa) tissues from Gleason graded histopathology images is vital for accurate diagnosis. Although deep learning (DL) based segmentation methods achieve state-of-the-art accuracy, they rely on large datasets…

Image and Video Processing · Electrical Eng. & Systems 2021-10-04 Dwarikanath Mahapatra

Semi-supervised learning has demonstrated great potential in medical image segmentation by utilizing knowledge from unlabeled data. However, most existing approaches do not explicitly capture high-level semantic relations between distant…

Computer Vision and Pattern Recognition · Computer Science 2023-12-07 Qianying Liu , Xiao Gu , Paul Henderson , Fani Deligianni

Compressed sensing magnetic resonance imaging (CS-MRI) is a theoretical framework that can accurately reconstruct images from undersampled k-space data with a much lower sampling rate than the one set by the classical Nyquist-Shannon…

Medical Physics · Physics 2020-05-19 Maosong Ran , Wenjun Xia , Yongqiang Huang , Zexin Lu , Peng Bao , Yan Liu , Huaiqiang Sun , Jiliu Zhou , Yi Zhang