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Although the use of multiple stacks can handle slice-to-volume motion correction and artifact removal problems, there are still several problems: 1) The slice-to-volume method usually uses slices as input, which cannot solve the problem of…

图像与视频处理 · 电气工程与系统科学 2023-10-17 Junpeng Tan , Xin Zhang , Yao Lv , Xiangmin Xu , Gang Li

Diffusion MRI (dMRI) of the developing brain can provide valuable insights into the white matter development. However, slice thickness in fetal dMRI is typically high (i.e., 3-5 mm) to freeze the in-plane motion, which reduces the…

图像与视频处理 · 电气工程与系统科学 2022-08-30 Hamza Kebiri , Gabriel Girard , Yasser Aleman-Gomez , Thomas Yu , Andras Jakab , Erick Jorge Canales-Rodriguez , Meritxell Bach Cuadra

This paper presents FeTal-SAM, a novel adaptation of the Segment Anything Model (SAM) tailored for fetal brain MRI segmentation. Traditional deep learning methods often require large annotated datasets for a fixed set of labels, making them…

计算机视觉与模式识别 · 计算机科学 2026-01-23 Qi Zeng , Weide Liu , Bo Li , Ryne Didier , P. Ellen Grant , Davood Karimi

We consider the problem of reconstructing a 3-D scene from a moving camera with high frame rate using the affine projection model. This problem is traditionally known as Affine Structure from Motion (Affine SfM), and can be solved using an…

计算机视觉与模式识别 · 计算机科学 2016-08-10 Roberto Tron

To reduce scanning time and/or improve spatial/temporal resolution in some MRI applications, parallel MRI (pMRI) acquisition techniques with multiple coils acquisition have emerged since the early 1990s as powerful 3D imaging methods that…

最优化与控制 · 数学 2009-09-03 Lotfi Chaari , Jean-Christophe Pesquet , Philippe Ciuciu , Amel Benazza-Benyahia

MRI, a widespread non-invasive medical imaging modality, is highly sensitive to patient motion. Despite many attempts over the years, motion correction remains a difficult problem and there is no general method applicable to all situations.…

图像与视频处理 · 电气工程与系统科学 2024-11-05 Oscar Dabrowski , Jean-Luc Falcone , Antoine Klauser , Julien Songeon , Michel Kocher , Bastien Chopard , François Lazeyras , Sébastien Courvoisier

Introduction: Fetal resting-state functional magnetic resonance imaging (rs-fMRI) is a rapidly evolving field that provides valuable insight into brain development before birth. Accurate segmentation of the fetal brain from the surrounding…

This paper aims to solve a fundamental problem in intensity-based 2D/3D registration, which concerns the limited capture range and need for very good initialization of state-of-the-art image registration methods. We propose a regression…

计算机视觉与模式识别 · 计算机科学 2017-03-07 Benjamin Hou , Amir Alansary , Steven McDonagh , Alice Davidson , Mary Rutherford , Jo V. Hajnal , Daniel Rueckert , Ben Glocker , Bernhard Kainz

Tuning the regularization hyperparameter $\alpha$ in inverse problems has been a longstanding problem. This is particularly true in the case of fetal brain magnetic resonance imaging, where an isotropic high-resolution volume is…

图像与视频处理 · 电气工程与系统科学 2023-04-06 Priscille de Dumast , Thomas Sanchez , Hélène Lajous , Meritxell Bach Cuadra

Functional magnetic resonance imaging (fMRI) is widely used for studying and diagnosing brain disorders, with functional connectivity (FC) matrices providing powerful representations of large-scale neural interactions. However, existing…

组织与器官 · 定量生物学 2026-04-17 Qianyu Chen , Shujian Yu

To explain individual differences in development, behavior, and cognition, most previous studies focused on projecting resting-state functional MRI (fMRI) based functional connectivity (FC) data into a low-dimensional space via linear…

神经元与认知 · 定量生物学 2018-11-01 Li Xiao , Julia M. Stephen , Tony W. Wilson , Vince D. Calhoun , Yu-Ping Wang

Limited capture range, and the requirement to provide high quality initialization for optimization-based 2D/3D image registration methods, can significantly degrade the performance of 3D image reconstruction and motion compensation…

计算机视觉与模式识别 · 计算机科学 2018-01-24 Benjamin Hou , Bishesh Khanal , Amir Alansary , Steven McDonagh , Alice Davidson , Mary Rutherford , Jo V. Hajnal , Daniel Rueckert , Ben Glocker , Bernhard Kainz

Multi-parametric magnetic resonance (MR) imaging is an indispensable tool in the clinic. Consequently, automatic volume-of-interest segmentation based on multi-parametric MR imaging is crucial for computer-aided disease diagnosis, treatment…

图像与视频处理 · 电气工程与系统科学 2022-11-17 Cheng Li , Yousuf Babiker M. Osman , Weijian Huang , Zhenzhen Xue , Hua Han , Hairong Zheng , Shanshan Wang

We propose FlowReg, a deep learning-based framework for unsupervised image registration for neuroimaging applications. The system is composed of two architectures that are trained sequentially: FlowReg-A which affinely corrects for gross…

计算机视觉与模式识别 · 计算机科学 2021-09-02 Sergiu Mocanu , Alan R. Moody , April Khademi

Functional Magnetic Resonance Imaging (fMRI) relies on multi-step data processing pipelines to accurately determine brain activity; among them, the crucial step of spatial smoothing. These pipelines are commonly suboptimal, given the local…

计算机视觉与模式识别 · 计算机科学 2017-10-03 Albert Vilamala , Kristoffer Hougaard Madsen , Lars Kai Hansen

Real-time magnetic resonance imaging (MRI) methods generally shorten the measuring time by acquiring less data than needed according to the sampling theorem. In order to obtain a proper image from such undersampled data, the reconstruction…

数值分析 · 数学 2013-12-05 Housen Li , Markus Haltmeier , Shuo Zhang , Jens Frahm , Axel Munk

Automated quality assessment of structural brain MRI is an important prerequisite for reliable neuroimaging analysis, but yet remains challenging due to motion artifacts and poor generalization across acquisition sites. Existing approaches…

图像与视频处理 · 电气工程与系统科学 2026-03-09 Naveetha Nithianandam , Prabhjot Kaur , Anil Kumar Sao

Purpose: To develop a MRI acquisition and reconstruction framework for volumetric cine visualisation of the fetal heart and great vessels in the presence of maternal and fetal motion. Methods: Four-dimensional depiction was achieved using a…

Ultrasound is a widely accessible and cost-effective medical imaging tool commonly used for prenatal evaluation of the fetal brain. However, it has limitations, particularly in the third trimester, where the complexity of the fetal brain…

图像与视频处理 · 电气工程与系统科学 2025-04-04 Naomi Silverstein , Efrat Leibowitz , Ron Beloosesky , Haim Azhari

Deformable image registration is fundamental to longitudinal and population analysis. Geometric alignment of the infant brain MR images is challenging, owing to rapid changes in image appearance in association with brain development. In…

计算机视觉与模式识别 · 计算机科学 2020-07-07 Dongming Wei , Sahar Ahmad , Yunzhi Huang , Lei Ma , Zhengwang Wu , Gang Li , Li Wang , Qian Wang , Pew-Thian Yap , Dinggang Shen