用视觉语言模型分析皮损图像和临床信息,提升猴痘早期诊断准确率。
MpoxVLM: A Vision-Language Model for Diagnosing Skin Lesions from Mpox Virus Infection
- 融合图像与临床数据的多模态模型,基于改进的ViT和LLaMA-2进行训练。
- 在自建数据集上实现90.38%的猴痘检测准确率。
- 适合医疗AI研究者与公共卫生机构用于疫情早期筛查。
COVID-19大流行后,全球气候变化加速了新发传染病的出现,尤其是人畜共患病毒的溢出风险持续存在。猴痘(由猴痘病毒引起)是典型的人畜共患病,常因皮损在不同阶段演变而难以确诊,尤其在肤色多样人群中表现差异大。2024年8月,世卫组织第二次宣布猴痘疫情为国际关注的突发公共卫生事件。尽管已有深度学习方法用于皮肤病变图像识别,但缺乏公开可获取的猴痘皮损图像、多模态临床数据及专用训练流程,导致高性能基础模型仍属空白。为此,我们提出MpoxVLM,一种结合视觉-语言模型(VLM)的诊断系统,通过整合CLIP视觉编码器、增强版Vision Transformer(ViT)分类器及LLaMA-2-7B语言模型,利用自建的猴痘皮损数据集进行预训练与微调。该模型在多模态输入下达到90.38%的检测准确率,为提升猴痘早期诊断能力提供了可行路径。
原文摘要 · Abstract (English)
In the aftermath of the COVID-19 pandemic and amid accelerating climate change, emerging infectious diseases, particularly those arising from zoonotic spillover, remain a global threat. Mpox (caused by the monkeypox virus) is a notable example of a zoonotic infection that often goes undiagnosed, especially as its rash progresses through stages, complicating detection across diverse populations with different presentations. In August 2024, the WHO Director-General declared the mpox outbreak a public health emergency of international concern for a second time. Despite the deployment of deep learning techniques for detecting diseases from skin lesion images, a robust and publicly accessible foundation model for mpox diagnosis is still lacking due to the unavailability of open-source mpox skin lesion images, multimodal clinical data, and specialized training pipelines. To address this gap, we propose MpoxVLM, a vision-language model (VLM) designed to detect mpox by analyzing both skin lesion images and patient clinical information. MpoxVLM integrates the CLIP visual encoder, an enhanced Vision Transformer (ViT) classifier for skin lesions, and LLaMA-2-7B models, pre-trained and fine-tuned on visual instruction-following question-answer pairs from our newly released mpox skin lesion dataset. Our work achieves 90.38% accuracy for mpox detection, offering a promising pathway to improve early diagnostic accuracy in combating mpox.
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