Search Results for author: Sayantan Kumar

Found 7 papers, 1 papers with code

Multimodal hierarchical multi-task deep learning framework for jointly predicting and explaining Alzheimer disease progression

no code implementations4 Apr 2024 Sayantan Kumar, Sean Yu, Thomas Kannampallil, Andrew Michelson, Aristeidis Sotiras, Philip Payne

We proposed a multimodal hierarchical multi-task learning approach which can monitor the risk of disease progression at each timepoint of the visit trajectory.

Multi-Task Learning

AgileFormer: Spatially Agile Transformer UNet for Medical Image Segmentation

1 code implementation29 Mar 2024 Peijie Qiu, Jin Yang, Sayantan Kumar, Soumyendu Sekhar Ghosh, Aristeidis Sotiras

However, we argue that the current design of the vision transformer-based UNet (ViT-UNet) segmentation models may not effectively handle the heterogeneous appearance (e. g., varying shapes and sizes) of objects of interest in medical image segmentation tasks.

Image Segmentation Medical Image Segmentation +2

Improving Normative Modeling for Multi-modal Neuroimaging Data using mixture-of-product-of-experts variational autoencoders

no code implementations2 Dec 2023 Sayantan Kumar, Philip Payne, Aristeidis Sotiras

Normative models in neuroimaging learn the brain patterns of healthy population distribution and estimate how disease subjects like Alzheimer's Disease (AD) deviate from the norm.

Identifying Dementia Subtypes with Electronic Health Records

no code implementations31 Jan 2022 Sayantan Kumar, Zachary Abrams, Suzanne Schindler, Nupur Ghoshal, Philip Payne

Our results indicate both inter-subtype variability, which indicates the variability amongst dementia subtypes for a particular component score even with the same CDR and (ii) intra-subtype variability, which indicates the variation in the 6 component scores within a particular dementia subtype.

Normative Modeling using Multimodal Variational Autoencoders to Identify Abnormal Brain Structural Patterns in Alzheimer Disease

no code implementations10 Oct 2021 Sayantan Kumar, Philip Payne, Aristeidis Sotiras

However, existing deep learning based normative models on multimodal MRI data use unimodal autoencoders with a single encoder and decoder that may fail to capture the relationship between brain measurements extracted from different MRI modalities.

GPR

Self-explaining Neural Network with Concept-based Explanations for ICU Mortality Prediction

no code implementations9 Oct 2021 Sayantan Kumar, Sean C. Yu, Thomas Kannampallil, Zachary Abrams, Andrew Michelson, Philip R. O. Payne

Complex deep learning models show high prediction tasks in various clinical prediction tasks but their inherent complexity makes it more challenging to explain model predictions for clinicians and healthcare providers.

Explainable Models ICU Mortality

Machine learning for modeling the progression of Alzheimer disease dementia using clinical data: a systematic literature review

no code implementations5 Aug 2021 Sayantan Kumar, Inez Oh, Suzanne Schindler, Albert M Lai, Philip R O Payne, Aditi Gupta

Clinical data consisting of both structured data tables and clinical notes can be effectively used in ML-based approaches to model risk for AD dementia progression.

Management

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