Search Results for author: Moti Freiman

Found 26 papers, 12 papers with code

Leveraging Prompt-Learning for Structured Information Extraction from Crohn's Disease Radiology Reports in a Low-Resource Language

no code implementations2 May 2024 Liam Hazan, Gili Focht, Naama Gavrielov, Roi Reichart, Talar Hagopian, Mary-Louise C. Greer, Ruth Cytter Kuint, Dan Turner, Moti Freiman

Automatic conversion of free-text radiology reports into structured data using Natural Language Processing (NLP) techniques is crucial for analyzing diseases on a large scale.

Automated Prediction of Breast Cancer Response to Neoadjuvant Chemotherapy from DWI Data

no code implementations7 Apr 2024 Shir Nitzan, Maya Gilad, Moti Freiman

Effective surgical planning for breast cancer hinges on accurately predicting pathological complete response (pCR) to neoadjuvant chemotherapy (NAC).

Image Segmentation Segmentation +1

NPB-REC: A Non-parametric Bayesian Deep-learning Approach for Undersampled MRI Reconstruction with Uncertainty Estimation

1 code implementation6 Apr 2024 Samah Khawaled, Moti Freiman

We introduce "NPB-REC", a non-parametric fully Bayesian framework, for MRI reconstruction from undersampled data with uncertainty estimation.

MRI Reconstruction SSIM

A self-attention model for robust rigid slice-to-volume registration of functional MRI

no code implementations6 Apr 2024 Samah Khawaled, Simon K. Warfield, Moti Freiman

Furthermore, our approach exhibits significantly faster registration speed compared to conventional iterative methods ($0. 096$ sec.

CIMIL-CRC: a clinically-informed multiple instance learning framework for patient-level colorectal cancer molecular subtypes classification from H\&E stained images

no code implementations29 Jan 2024 Hadar Hezi, Matan Gelber, Alexander Balabanov, Yosef E. Maruvka, Moti Freiman

Treatment approaches for colorectal cancer (CRC) are highly dependent on the molecular subtype, as immunotherapy has shown efficacy in cases with microsatellite instability (MSI) but is ineffective for the microsatellite stable (MSS) subtype.

Multiple Instance Learning whole slide images

LUNet: Deep Learning for the Segmentation of Arterioles and Venules in High Resolution Fundus Images

no code implementations11 Sep 2023 Jonathan Fhima, Jan Van Eijgen, Hana Kulenovic, Valérie Debeuf, Marie Vangilbergen, Marie-Isaline Billen, Heloïse Brackenier, Moti Freiman, Ingeborg Stalmans, Joachim A. Behar

Using active learning, we created a new DFI dataset containing 240 crowd-sourced manual A/V segmentations performed by fifteen medical students and reviewed by an ophthalmologist, and developed LUNet, a novel deep learning architecture for high resolution A/V segmentation.

Active Learning Segmentation

PCMC-T1: Free-breathing myocardial T1 mapping with Physically-Constrained Motion Correction

1 code implementation22 Aug 2023 Eyal Hanania, Ilya Volovik, Lilach Barkat, Israel Cohen, Moti Freiman

We compared PCMC-T1 to baseline deep-learning-based image registration approaches using a 5-fold experimental setup on a publicly available dataset of 210 patients.

Image Registration

Exploring the Interplay Between Colorectal Cancer Subtypes Genomic Variants and Cellular Morphology: A Deep-Learning Approach

no code implementations26 Mar 2023 Hadar Hezi, Daniel Shats, Daniel Gurevich, Yosef E. Maruvka, Moti Freiman

We trained CNN models for CRC subtype classification that account for potential correlation between genomic variations within CRC subtypes and their corresponding cellular morphology patterns.

Binary Classification Classification +1

P2T2: a Physically-primed deep-neural-network approach for robust $T_{2}$ distribution estimation from quantitative $T_{2}$-weighted MRI

1 code implementation8 Dec 2022 Hadas Ben-Atya, Moti Freiman

Deep neural network (DNN) based methods have been proposed to address the complex inverse problem of estimating $T_2$ distributions from MRI data, but they are not yet robust enough for clinical data with low Signal-to-Noise ratio (SNR) and are highly sensitive to distribution shifts such as variations in echo-times (TE) used during acquisition.

MA-RECON: Mask-aware deep-neural-network for robust fast MRI k-space interpolation

1 code implementation31 Aug 2022 Nitzan Avidan, Moti Freiman

The goal of our work is to enhance the generalization capabilities of DNN methods for k-space interpolation by introducing `MA-RECON', an innovative mask-aware DNN architecture and associated training method.

MRI Reconstruction

Lirot.ai: A Novel Platform for Crowd-Sourcing Retinal Image Segmentations

no code implementations22 Aug 2022 Jonathan Fhima, Jan Van Eijgen, Moti Freiman, Ingeborg Stalmans, Joachim A. Behar

Discussion and future work: We will use active learning strategies to continue enlarging our retinal fundus dataset by including a more efficient process to select the images to be annotated and distribute them to annotators.

Active Learning Management

NPB-REC: Non-parametric Assessment of Uncertainty in Deep-learning-based MRI Reconstruction from Undersampled Data

1 code implementation8 Aug 2022 Samah Khawaled, Moti Freiman

We demonstrated the added-value of our approach on the multi-coil brain MRI dataset, from the fastmri challenge, in comparison to the baseline E2E-VarNet with and without inference-time dropout.

Decision Making MRI Reconstruction +2

PVBM: A Python Vasculature Biomarker Toolbox Based On Retinal Blood Vessel Segmentation

no code implementations31 Jul 2022 Jonathan Fhima, Jan Van Eijgen, Ingeborg Stalmans, Yevgeniy Men, Moti Freiman, Joachim A. Behar

Results: We built a fully automated vasculature biomarker toolbox based on DFI segmentations and provided a proof of usability to characterize the vascular changes in glaucoma.

Image Segmentation Segmentation +1

PD-DWI: Predicting response to neoadjuvant chemotherapy in invasive breast cancer with Physiologically-Decomposed Diffusion-Weighted MRI machine-learning model

1 code implementation12 Jun 2022 Maya Gilad, Moti Freiman

We demonstrated the added-value of our PD-DWI model over conventional machine-learning approaches for pCR prediction from mp-MRI data using the publicly available Breast Multi-parametric MRI for prediction of NAC Response (BMMR2) challenge.

SUPER-IVIM-DC: Intra-voxel incoherent motion based Fetal lung maturity assessment from limited DWI data using supervised learning coupled with data-consistency

1 code implementation8 Jun 2022 Noam Korngut, Elad Rotman, Onur Afacan, Sila Kurugol, Yael Zaffrani-Reznikov, Shira Nemirovsky-Rotman, Simon Warfield, Moti Freiman

SUPER-IVIM-DC has the potential to reduce the long acquisition times associated with IVIM analysis of DWI data and to provide clinically feasible bio-markers for non-invasive fetal lung maturity assessment.

Image translation of Ultrasound to Pseudo Anatomical Display by CycleGAN

1 code implementation16 Feb 2022 Lilach Barkat, Moti Freiman, Haim Azhari

In order to evaluate the preservation of the anatomical features, the lesions in the ultrasonic images and the generated pseudo anatomical images were both automatically segmented and compared.

Anatomy Generative Adversarial Network +1

Non Parametric Data Augmentations Improve Deep-Learning based Brain Tumor Segmentation

no code implementations25 Nov 2021 Hadas Ben-Atya, Ori Rajchert, Liran Goshen, Moti Freiman

Automatic brain tumor segmentation from Magnetic Resonance Imaging (MRI) data plays an important role in assessing tumor response to therapy and personalized treatment stratification. Manual segmentation is tedious and subjective. Deep-learning-based algorithms for brain tumor segmentation have the potential to provide objective and fast tumor segmentation. However, the training of such algorithms requires large datasets which are not always available.

Brain Tumor Segmentation Data Augmentation +3

NPBDREG: Uncertainty Assessment in Diffeomorphic Brain MRI Registration using a Non-parametric Bayesian Deep-Learning Based Approach

1 code implementation15 Aug 2021 Samah Khawaled, Moti Freiman

The NPBDREG shows a better correlation of the predicted uncertainty with out-of-distribution data ($r>0. 95$ vs. $r<0. 5$) as well as a 7. 3%improvement in the registration accuracy (Dice score, $0. 74$ vs. $0. 69$, $p \ll 0. 01$), and 18% improvement in registration smoothness (percentage of folds in the deformation field, 0. 014 vs. 0. 017, $p \ll 0. 01$).

Decision Making Image Registration

Unsupervised Deep-Learning Based Deformable Image Registration: A Bayesian Framework

no code implementations10 Aug 2020 Samah Khawaled, Moti Freiman

We demonstrated the added-value of our Basyesian unsupervised DL-based registration framework on the MNIST and brain MRI (MGH10) datasets in comparison to the VoxelMorph unsupervised DL-based image registration framework.

Image Registration

Learning a sparse database for patch-based medical image segmentation

no code implementations25 Jun 2019 Moti Freiman, Hannes Nickisch, Holger Schmitt, Pal Maurovich-Horvat, Patrick Donnelly, Mani Vembar, Liran Goshen

We introduce a functional for the learning of an optimal database for patch-based image segmentation with application to coronary lumen segmentation from coronary computed tomography angiography (CCTA) data.

Image Segmentation Medical Image Segmentation +4

Improving CCTA based lesions' hemodynamic significance assessment by accounting for partial volume modeling in automatic coronary lumen segmentation

no code implementations24 Jun 2019 Moti Freiman, Hannes Nickisch, Sven Prevrhal, Holger Schmitt, Mani Vembar, Pál Maurovich-Horvat, Patrick Donnelly, Liran Goshen

Purpose: The goal of this study was to assess the potential added benefit of accounting for partial volume effects (PVE) in an automatic coronary lumen segmentation algorithm from coronary computed tomography angiography (CCTA).

Segmentation Specificity

Unsupervised Abnormality Detection through Mixed Structure Regularization (MSR) in Deep Sparse Autoencoders

no code implementations28 Feb 2019 Moti Freiman, Ravindra Manjeshwar, Liran Goshen

Deep sparse auto-encoders with mixed structure regularization (MSR) in addition to explicit sparsity regularization term and stochastic corruption of the input data with Gaussian noise have the potential to improve unsupervised abnormality detection.

Anomaly Detection Denoising

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