Core Concepts
A novel framework that incorporates medical decision-making rationales into the training process to generate accurate and interpretable responses for medical visual questions.
Abstract
The paper presents a framework for enhancing Medical Visual Question Answering (MedVQA) by incorporating medical decision-making rationales into the training process. The key highlights are:
The authors develop a semi-automated process to annotate existing MedVQA datasets (VQA-RAD and SLAKE) with medical decision-making rationales, creating the new R-RAD and R-SLAKE datasets.
The proposed framework includes a textual encoder, visual encoder, cross-attention network, gated fusion mechanism, and textual decoder to generate answers and corresponding rationales.
Three distinct strategies are introduced - "Explanation", "Reasoning", and "Two-Stage Reasoning" - to generate decision outcomes and rationales, showcasing the medical decision-making process.
Extensive experiments demonstrate that the "Explanation" method achieves state-of-the-art accuracy of 83.5% on R-RAD and 86.3% on R-SLAKE, outperforming existing baselines.
Ablation studies highlight the benefits of incorporating medical decision-making rationales, with the "Explanation" method improving the accuracy of the Gemini Pro model by 8.8% on R-RAD and 8.5% on R-SLAKE.
The framework and datasets aim to enhance the interpretability and transparency of MedVQA models, enabling faster and more accurate medical decision-making in real-world applications.
Stats
The presence of air-fluid levels in a patient's bowel is indicated by the observation of horizontal levels seen within the bowel loops on an imaging study.
There are multiple circular and oval structures within the bowel that have a darker upper portion and a lighter lower portion.
The ribs appear intact and the cortical margins continuous, which suggests that there are no fractures present in the ribs.
Quotes
"The presence of air-fluid levels in a patient's bowel is indicated by the observation of horizontal levels seen within the bowel loops on an imaging study."
"There are multiple circular and oval structures within the bowel that have a darker upper portion and a lighter lower portion."
"The ribs appear intact and the cortical margins continuous, which suggests that there are no fractures present in the ribs."