Ahmed Abdulaal
I'm a doctor and machine learning researcher. I completed my medical training at Imperial College London and am a Microsoft PhD scholar at University College London. I was previously a Research Scientist at the Center for Artificial Intelligence at AstraZeneca. I'm co-founder and CEO of Mecha Health, where I work on creating multi-modal systems for medical imaging.
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Research
Causal Modelling & Structural Models
Causal Modelling Agents: Causal Graph Discovery through Synergising Metadata- and Data-driven Reasoning
Ahmed Abdulaal, Adamos Hadjivasiliou, Nina Montaña-Brown, Tiantian He, Ayodeji Ijishakin, Ivana Drobnjak, Daniel C. Castro, Daniel C. Alexander
ICLR 2024
Deep Structural Causal Modelling of the Clinical and Radiological Phenotype of Alzheimer's Disease
Ahmed Abdulaal, Daniel C. Castro, Daniel C. Alexander
NeurIPS 2022 – Workshop on Causality for Real-World Impact
Medical Imaging & Generative Models
Balancing Act: Diversity and Consistency in Large Language Model Ensembles
Ahmed Abdulaal, Chen Jin, Nina Montaña-Brown, Aryo Pradipta Gema, Daniel C. Castro, Daniel C. Alexander, Philip Alexander Teare, Tom Diethe, Dino Oglic, Amrutha Saseendran
ICLR 2025
DeCoRe: Decoding by Contrasting Retrieval Heads to Mitigate Hallucinations
Aryo Pradipta Gema, Chen Jin, Ahmed Abdulaal, Tom Diethe, Philip Alexander Teare, Beatrice Alex, Pasquale Minervini, Amrutha Saseendran
EMNLP 2025 Findings
Interpretable Alzheimer's Disease Classification via a Contrastive Diffusion Autoencoder
Ayodeji Ijishakin, Ahmed Abdulaal, Adamos Hadjivasiliou, Sophie Anne Martin, James Cole
ICML 2023 – Interpretable Machine Learning in Healthcare Workshop
An X-Ray Is Worth 15 Features: Sparse Autoencoders for Interpretable Radiology Report Generation
Ahmed Abdulaal et al.
arXiv 2024
Disentangled Diffusion Autoencoder for Harmonization of Multi-site Neuroimaging Data
Ayodeji Ijishakin, Ana Lawry Aguila, Elizabeth Levitis, Ahmed Abdulaal, Andre Altmann, James Cole
arXiv 2024
Normative Diffusion Autoencoders: Application to Amyotrophic Lateral Sclerosis
Ayodeji Ijishakin, Adamos Hadjasavilou, Ahmed Abdulaal, Nina Montana-Brown, Florence Townend, Edoardo Spinelli, Massimo Fillipi, Federica Agosta, James Cole, Andrea Malaspina
arXiv 2024
A Coupled-Mechanisms Modelling Framework for Neurodegeneration
Tiantian He, Elinor Thompson, Anna Schroder, Neil P. Oxtoby, Ahmed Abdulaal, Frederik Barkhof, Daniel C. Alexander
MICCAI 2023
Applied Clinical Research
SARAMIS: Simulation Assets for Robotic Assisted and Minimally Invasive Surgery
Nina Montaña-Brown, Shaheer U. Saeed, Ahmed Abdulaal, et al.
NeurIPS 2023
Prognostic Modeling of COVID-19 Using Artificial Intelligence in the United Kingdom
Ahmed Abdulaal et al.
Journal of Medical Internet Research
Comparison of Deep Learning with Regression Analysis in Creating Predictive Models for SARS-CoV-2 Outcomes
Ahmed Abdulaal et al.
BMC Medical Informatics and Decision Making
Clinical Utility and Functionality of an Artificial Intelligence–Based App to Predict Mortality in COVID-19
Ahmed Abdulaal et al.
JMIR Formative Research
COVID-19 Prognostic Models: A Pro-Con Debate for Machine Learning vs. Traditional Statistics
Ahmed Al-Hindawi, Ahmed Abdulaal, et al.
Frontiers in Digital Health
New-Onset Anosmia and Ageusia in Adult Patients Diagnosed with SARS-CoV-2 Infection
A. Patel, E. Charani, D. Ariyanayagam, Ahmed Abdulaal, et al.
Clinical Microbiology and Infection
Investigating the Association Between Ethnicity and Health Outcomes in SARS-CoV-2
Aatish Patel, Ahmed Abdulaal, et al.
PLoS ONE
Bacteraemia Variation During the COVID-19 Pandemic: A Multi-Centre UK Secondary Care Ecological Analysis
Sarah Denny, Ahmed Abdulaal, et al.
BMC Infectious Diseases
Variability in Detection of SARS-CoV-2-Specific Antibody Responses Following Mild Infection
Scott J. C. Pallett, Ahmed Abdulaal, et al.
Eurosurveillance
Effect of Health Care Provider Delays on Short-Term Outcomes in Patients With Colorectal Cancer
Ahmed Abdulaal, Chanpreet Arhi, Paul Ziprin
International Journal of Medical Research
Outcomes of Inflammatory Bowel Disease Surgery in Obese Versus Non-Obese Patients: A Meta-Analysis
G. Hicks, Ahmed Abdulaal, A. A. P. Slesser, Y. Mohsen
Techniques in Coloproctology