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README.md

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-license: cc-by-nc-sa-4.0
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+license: cc-by-nc-sa-4.0
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+# CT-RATE-VQA Dataset
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+We constructed a large-scale **CT-VQA** dataset based on the [ReXGroundingCT](https://huggingface.co/datasets/rajpurkarlab/ReXGroundingCT) data \cite{rexct} to support model training and evaluation.  
+For each case, CT volumes were processed along with their corresponding multi-class segmentation masks, where each mask channel represents a specific lesion type.
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+This dataset is designed for medical visual question answering (Med-VQA) tasks.