Effectively Fine-tune to Improve Large Multimodal Models for Radiology Report Generation

Published: 27 Oct 2023, Last Modified: 11 Nov 2023DGM4H NeurIPS 2023 PosterEveryoneRevisionsBibTeX
Keywords: Large Language Model, Multimodality, Fine-tuning, Radiology Report Generation
TL;DR: We propose a simple yet effective tw-stage fine-tuning strategy to improve the factuality of generated radiology reports from X-rays.
Abstract: Writing radiology reports from medical images requires a high level of domain expertise. It is time-consuming even for trained radiologists and can be error-prone for inexperienced radiologists. It would be appealing to automate this task by leveraging generative AI, which has shown drastic progress in vision and language understanding. In particular, Large Language Models (LLM) have demonstrated impressive capabilities recently and continued to set new state-of-the-art performance on almost all natural language tasks. While many have proposed architectures to combine vision models with LLMs for multimodal tasks, few have explored practical fine-tuning strategies. In this work, we proposed a simple yet effective two-stage fine-tuning protocol to align visual features to LLM's text embedding space as soft visual prompts. Our framework with OpenLLaMA-7B achieved state-of-the-art level performance without domain-specific pretraining. Moreover, we provide detailed analyses of soft visual prompts and attention mechanisms, shedding light on future research directions.
Submission Number: 26