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Purpose: Trochlear Dysplasia (TD) is a common malformation in adolescents, leading to anterior knee pain and instability. Surgical interventions such as trochleoplasty require precise planning to correct the trochlear groove. However, no…

Image and Video Processing · Electrical Eng. & Systems 2024-12-16 Michael Wehrli , Alicia Durrer , Paul Friedrich , Volodimir Buchakchiyskiy , Marcus Mumme , Edwin Li , Gyozo Lehoczky , Carol C. Hasler , Philippe C. Cattin

Purpose: Deformable image registration (DIR) is critical in adaptive radiation therapy (ART) to account for anatomical changes. Conventional intensity-based DIR methods often fail when image intensities differ. This study evaluates a hybrid…

Medical Physics · Physics 2024-11-27 Keyur D. Shah , James A. Shackleford , Nagarajan Kandasamy , Gregory C. Sharp

The ability to process environment maps across multiple sessions is critical for robots operating over extended periods of time. Specifically, it is desirable for autonomous agents to detect changes amongst maps of different sessions so as…

Diffusion-weighted magnetic resonance imaging (DW-MRI) is a critical imaging method for capturing and modeling tissue microarchitecture at a millimeter scale. A common practice to model the measured DW-MRI signal is via fiber orientation…

Deformable image registration plays an essential role in various medical image tasks. Existing deep learning-based deformable registration frameworks primarily utilize convolutional neural networks (CNNs) or Transformers to learn features…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Jiong Wu , Kuang Gong

Objective: To assess the performance of a probabilistic deep learning based algorithm for predicting inter-fraction anatomical changes in head and neck patients. Approach: A probabilistic daily anatomy model for head and neck patients…

Medical Physics · Physics 2024-11-12 Tiberiu Burlacu , Mischa Hoogeman , Danny Lathouwers , Zoltán Perkó

We propose a novel automatic method for accurate segmentation of the prostate in T2-weighted magnetic resonance imaging (MRI). Our method is based on convolutional neural networks (CNNs). Because of the large variability in the shape, size,…

Image and Video Processing · Electrical Eng. & Systems 2020-01-01 Davood Karimi , Golnoosh Samei , Yanan Shao , Septimiu Salcudean

In MR fingerprinting (MRF) reconstruction, measured data is pattern-matched to simulated signals to extract quantitative tissue parameters. A critical drawback to this approach is the exponentially increasing compute time for mapping of…

Medical Physics · Physics 2024-07-17 Victoria Y. Yu , Kathryn R. Tringale , Ricardo Otazo , Ouri Cohen

Human body is a complex dynamic system composed of various sub-dynamic parts. Especially, thoracic and abdominal organs have complex internal shape variations with different frequencies by various reasons such as respiration with fast…

Image and Video Processing · Electrical Eng. & Systems 2021-03-10 Seyoun Park , Elliot K. Fishman , Alan L. Yuille

Visual microscopic study of diseased tissue by pathologists has been the cornerstone for cancer diagnosis and prognostication for more than a century. Recently, deep learning methods have made significant advances in the analysis and…

Image and Video Processing · Electrical Eng. & Systems 2022-09-30 Puria Azadi Moghadam , Sanne Van Dalen , Karina C. Martin , Jochen Lennerz , Stephen Yip , Hossein Farahani , Ali Bashashati

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

Purpose: We aimed to develop deep machine learning (DL) models to improve the detection and segmentation of intraprostatic lesions (IL) on bp-MRI by using whole amount prostatectomy specimen-based delineations. We also aimed to investigate…

Image and Video Processing · Electrical Eng. & Systems 2020-10-30 Zhenzhen Dai , Ivan Jambor , Pekka Taimen , Milan Pantelic , Mohamed Elshaikh , Craig Rogers , Otto Ettala , Peter Boström , Hannu Aronen , Harri Merisaari , Ning Wen

Tubular structure segmentation in medical images, e.g., segmenting vessels in CT scans, serves as a vital step in the use of computers to aid in screening early stages of related diseases. But automatic tubular structure segmentation in CT…

Computer Vision and Pattern Recognition · Computer Science 2019-12-10 Yan Wang , Xu Wei , Fengze Liu , Jieneng Chen , Yuyin Zhou , Wei Shen , Elliot K. Fishman , Alan L. Yuille

Recent advances in cancer research largely rely on new developments in microscopic or molecular profiling techniques offering high level of detail with respect to either spatial or molecular features, but usually not both. Here, we present…

Kernel density estimation (KDE) is one of the most widely used nonparametric density estimation methods. The fact that it is a memory-based method, i.e., it uses the entire training data set for prediction, makes it unsuitable for most…

Machine Learning · Computer Science 2022-08-08 Joseph A. Gallego , Juan F. Osorio , Fabio A. González

Paired inspiratory-expiratory CT scans enable the quantification of gas trapping due to small airway disease and emphysema by analyzing lung tissue motion in COPD patients. Deformable image registration of these scans assesses regional lung…

Deep learning models (DLMs) can achieve state-of-the-art performance in histopathology image segmentation and classification, but have limited deployment potential in real-world clinical settings. Uncertainty estimates of DLMs can increase…

Image and Video Processing · Electrical Eng. & Systems 2024-12-31 Audrey Xie , Elhoucine Elfatimi , Sambuddha Ghosal , Pratik Shah

Deformable registration continues to be one of the key challenges in medical image analysis. While iconic registration methods have started to benefit from the recent advances in medical deep learning, the same does not yet apply for the…

Computer Vision and Pattern Recognition · Computer Science 2019-09-18 Lasse Hansen , Doris Dittmer , Mattias P. Heinrich

Histopathology is a reflection of the molecular changes and provides prognostic phenotypes representing the disease progression. In this study, we introduced feature scores generated from hematoxylin and eosin histology images based on deep…

Quantitative Methods · Quantitative Biology 2020-07-28 Okyaz Eminaga , Mahmood Abbas , Yuri Tolkach , Rosalie Nolley , Christian Kunder , Axel Semjonow , Martin Boegemann

Automated patient positioning can improve radiology workflow efficiency by reducing the time required for manual table adjustments and scout-based scan planning. We propose a learning-based framework that predicts 3D organ locations and…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Eytan Kats , Kai Geissler , Daniel Mensing , Julien Senegas , Jochen G. Hirsch , Stefan Heldman , Mattias P. Heinrich