Lingshu-7b-csrrg-findings

Lingshu-7b: Contextualized Structured Radiology Report Generation (Findings)

This model is a fine-tuned version of lingshu-medical-mllm/Lingshu-7B for generating the FINDINGS section of contextualized structured chest X-ray radiology reports. It was trained using LoRA (Low-Rank Adaptation) on the csrrg_ift_dataset containing instruction-following examples from MIMIC-CXR and CheXpert+ datasets.

Model Description

This model performs Contextualized Structured Radiology Report Generation (CSRRG) for chest X-rays, generating detailed findings sections with rich clinical context including patient history, imaging technique, comparison to prior studies, and temporal reasoning.

Key characteristics:

• Generates the FINDINGS section of radiology reports
• Incorporates clinical history/indication, technique, and comparison to prior studies
• Performs temporal reasoning across multiple examinations
• Produces structured, clinically relevant observations with contextual awareness
• Fine-tuned with LoRA for parameter-efficient adaptation

Intended Use

Primary Use Cases

• Research on contextualized radiology report generation
• Development of temporal reasoning systems for medical imaging
• Clinical decision support with longitudinal patient data
• Medical AI and multimodal model research
• Educational tools for radiology training

Intended Users

• Medical AI researchers
• Healthcare technology developers
• Clinical informatics specialists
• Radiology departments (research use only)

Out-of-Scope Use

• NOT intended for clinical diagnosis without physician review
• Should not replace human radiologists in clinical practice
• Requires validation before any clinical deployment

Training Details

Training Data

• Dataset: csrrg_ift_dataset (csrrg_ift_dataset_findings subset)
• Training samples: ~181,874 instruction-following examples
• Data sources: MIMIC-CXR and CheXpert+ chest X-ray datasets
• Task format: Instruction fine-tuning with rich clinical context
• Context includes: Clinical history/indication, imaging technique, comparison to prior studies, current and prior images

Training Procedure

Fine-tuning method: LoRA (Low-Rank Adaptation)

LoRA Configuration:

• Rank (r): 32
• Alpha: 64
• Dropout: 0.1
• Target modules: q_proj, k_proj, v_proj, o_proj, gate_proj, up_proj, down_proj

Training hyperparameters:

• Learning rate: 2e-4
• Batch size: 4 per device
• Gradient accumulation steps: 32 (effective batch size: 128)
• Epochs: 1
• Optimizer: AdamW
• Learning rate scheduler: Cosine with 3% warmup
• Precision: bfloat16
• Attention implementation: Flash Attention 2
• Max sequence length: 2048
• Max images per sample: 2

Hardware:

• GPU: NVIDIA H100
• Training framework: HuggingFace Transformers + PEFT

Usage

Loading the Model

from transformers import AutoProcessor, AutoModelForVision2Seq
from PIL import Image
import torch

# Load model and processor
model_name = "erjui/Lingshu-7b-csrrg-findings"
model = AutoModelForVision2Seq.from_pretrained(
    model_name,
    trust_remote_code=True,
    torch_dtype=torch.bfloat16,
    device_map="auto"
)
processor = AutoProcessor.from_pretrained("lingshu-medical-mllm/Lingshu-7B", trust_remote_code=True)

# Load chest X-ray images (current and prior studies)
# CSRRG models support multiple images for temporal comparison (max_images_per_sample: 2)
current_image = Image.open("current_xray.jpg")
prior_image = Image.open("prior_xray.jpg")

# Prepare input with clinical context
messages = [
    {
        "role": "system",
        "content": [{"type": "text", "text": "You are an expert radiologist."}]
    },
    {
        "role": "user",
        "content": [
            {
                "type": "text",
                "text": """Analyze the chest X-ray images and write the FINDINGS section of a radiology report. Use standard medical terminology and organize findings by anatomical regions. Consider the available clinical contexts when formulating your findings.

=== CLINICAL HISTORY/INDICATION ===
Male patient status post acetabular surgery with concern for pleural effusion.

=== TECHNIQUE ===
Portable semi-erect single frontal chest radiograph.

=== CURRENT IMAGES ==="""
            },
            {"type": "image"},  # Current image
            {"type": "image"}   # Prior image (supports multiple images for temporal comparison)
        ]
    }
]

# Process and generate
inputs = processor(images=[current_image, prior_image], text=messages, return_tensors="pt").to(model.device)
outputs = model.generate(**inputs, max_new_tokens=512)
generated_text = processor.decode(outputs[0], skip_special_tokens=True)

print(generated_text)

Expected Output Format

FINDINGS:
Lungs and Airways:
- No pleural effusion or pneumothorax detected
- Bibasilar atelectasis present

Cardiovascular:
- Mild left ventricular enlargement

Musculoskeletal and Chest Wall:
- Bilateral rib fractures noted

Citation

If you use this model, please cite:

@article{kang2025automated,
  title={Automated Structured Radiology Report Generation with Rich Clinical Context},
  author={Kang, Seongjae and Lee, Dong Bok and Jung, Juho and Kim, Dongseop and Kim, Won Hwa and Joo, Sunghoon},
  journal={arXiv preprint arXiv:2510.00428},
  year={2025}
}

Also cite the base model:

@article{xu2025lingshu,
  title={Lingshu: A Generalist Foundation Model for Unified Multimodal Medical Understanding and Reasoning},
  author={Xu, Weiwen and Chan, Hou Pong and Li, Long and Aljunied, Mahani and Yuan, Ruifeng and Wang, Jianyu and Xiao, Chenghao and Chen, Guizhen and Liu, Chaoqun and Li, Zhaodonghui and others},
  journal={arXiv preprint arXiv:2506.07044},
  year={2025}
}

Model Card Authors

Seongjae Kang (erjui)

Model Card Contact

For questions or issues, please open an issue on the model repository.