Dr.Charaka: An LLM-Powered Intelligent Clinical Diagnosis Assistance SaaS Platform

Dr.Charaka is an AI-driven medical SaaS platform that integrates patient test data and biomarkers, uses machine learning models to predict risks of various diseases, and leverages large language models to generate structured PDF diagnostic reports, providing intelligent support for clinical decision-making. The platform's name is inspired by the ancient Indian medical classic Charaka Samhita, embodying the combination of traditional medical wisdom and modern AI technology.

The medical diagnosis process is complex and requires comprehensive multi-indicator analysis. Traditional manual methods are time-consuming and prone to subjective influences. With the explosive growth of medical data, efficiently using data to assist decision-making has become a challenge. The Dr.Charaka project combines machine learning and large language model technologies to build an intelligent clinical diagnosis assistance platform to address the above challenges.

Data Ingestion and Processing

Supports input of multiple data formats such as laboratory test results, biomarkers, basic patient information, and medical history records. It has built-in data cleaning and standardization modules to handle format differences.

Disease Risk Prediction Models

• Cardiovascular diseases: Analyzes indicators like blood lipids and blood pressure, uses ensemble learning methods to assess risks;
• Diabetes: Synthesizes indicators like fasting blood glucose to predict type 2 diabetes risk, focusing on pre-diabetic populations;
• Cancer: Performs risk stratification based on tumor markers, guiding screening.

LLM-Driven Clinical Reasoning Layer

• Integrates and analyzes multi-source data to identify potential associations;
• Generates structured PDF reports with adjustable language styles;
• Provides personalized clinical recommendations with evidence levels marked.

Machine Learning Model Training

Uses transfer learning to fine-tune pre-trained models, performs automatic feature extraction, and uses SHAP to ensure model interpretability.

LLM Integration and Optimization

Enhances domain knowledge accuracy through RAG, implements content filtering to ensure safety and compliance, and supports multi-language report generation.

System Architecture

Microservice architecture: The API gateway layer handles authentication and routing; the data processing service is responsible for cleaning and preprocessing; the model inference service provides prediction and generation capabilities; the report generation service converts results into PDFs; the hybrid storage layer manages data and files.

• Primary care: Acts as an intelligent assistant to provide second diagnostic opinions, improving diagnostic accuracy;
• Health checkups: Quickly analyzes data to generate personalized reports, enhancing service added value;
• Chronic disease management: Regularly assesses control status and predicts complication risks;
• Medical education: Serves as auxiliary material to help learn clinical thinking.

Medical data is sensitive, and the platform adopts:

• Encryption for transmission and storage;
• Role-based access control;
• Audit logs to record operations;
• Compliance with regulations like HIPAA and GDPR.

Dr.Charaka demonstrates the potential of AI in the medical diagnosis field, combining ML and LLM to provide accurate predictions and easy-to-understand reports. Future directions include exploring support for more disease types, integrating medical image analysis, and developing real-time monitoring functions.