Publications by Mohammad Asadi, PhD student in Electrical Engineering at Stanford University, spanning multimodal and agentic AI, AI evaluation, and trustworthy AI, including MIRAGE and MARCUS, with applications in medicine.
2026
MIRAGE: The Illusion of Visual Understanding
Mohammad Asadi*, Jack W. O’Sullivan*, Fang Cao, Tahoura Nedaee, Kamyar Rajabalifardi, Fei-Fei Li†, Ehsan Adeli†, and Euan A. Ashley†
Frontier multimodal models readily generate detailed image descriptions and elaborate reasoning traces (including pathology-biased clinical findings) for images they were never shown, a phenomenon we term "mirage reasoning." In the most extreme case, a small text-only model reached the top of a chest X-ray question-answering benchmark without access to any images. We introduce the Mirage Score, the Phantom-0 benchmark, and the B-Clean decontamination framework to measure and contain the effect.
MARCUS: An Agentic, Multimodal Vision-Language Model for Cardiac Diagnosis and Management
Mohammad Asadi*, Jack W. O’Sullivan*, Lennart Elbe, Akshay Chaudhari, Tahoura Nedaee, Francois Haddad, Michael Salerno, Fei-Fei Li, Ehsan Adeli, Rima Arnaout, and Euan A. Ashley†
MARCUS (Multimodal Autonomous Reasoning and Chat for Ultrasound and Signals) is an agentic vision-language assistant that reads and reasons over ECG, echocardiography, and cardiac MRI, individually or jointly. Modality-specific expert models are coordinated by a multimodal orchestrator that, by design, resists the "mirage reasoning" failure mode.
Deterministic Hallucination Detection in Medical VQA via Confidence-Evidence Bayesian Gain
Mohammad Asadi, Tahoura Nedaee, Jack W. O’Sullivan, Euan A. Ashley, and Ehsan Adeli
EchoGraph: Automated Quality Assessment of Echocardiography Reports
Chieh-Ju Chao, Jean-Benoit Delbrouck, Mohammad Asadi, Imon Banerjee, Juan M. Farina, Francesca Galasso, Ahmed K. Mahmoud, Mohammed Tiseer Abbas, Yu-Chiang Wang, Reza Arsanjani, Garvan C. Kane, Jae K. Oh, Bradley J. Erickson, Fei-Fei Li, Ehsan Adeli, and Curtis Langlotz
Deterministic Hallucination Detection in Medical VQA via Confidence-Evidence Bayesian GainarXiv preprint, 2026
EchoAtlas: A Conversational, Multi-View Vision-Language Foundation Model for Echocardiography Interpretation and Clinical ReasoningmedRxiv preprint, 2026
Synthetic Hands Meet Legacy Data: A Synthetic Dataset for Structured, Controllable, and Multimodal EvaluationIn ICCV 2025 Workshops (DataCV), 2025