MAGIC-CT: Multiorgan Annotation and Grounded Image Captioning in CT for Cancer

We present MAGIC-CT, a contrast-enhanced CT dataset of 562 patients with abdominal tumors (liver cysts/cancer, lung metastases, lung cancer, kidney cysts, renal cancer, pancreatic cancer). All 562 patients have CT scans and 3D lesion/organ masks; a subset of 492 patients also have organ-wise, radiologist-authored reports (RU/KZ/EN) totaling 4,937 organ descriptions. The dataset spans 8 pathologies across 4 organs, with about 1,250 annotated lesions and about 500 lesion-linked textual findings, enabling training of multimodal systems that connect volumetric localization to clinical language. MAGIC-CT uniquely integrates volumetric lesion localization, quantitative metrics (e.g., tumor volume, angular involvement of vasculature), and rich semantic context (e.g., "cuff-like encasement of the celiac trunk"), addressing the lack of resources bridging radiological imaging, segmentation, and clinical language. This dataset is expected to enable advancements in AI-driven tumor characterization, automated report generation, and metastasis tracking, with implications for precision oncology. Data Use Agreement If I am granted access to the database: I will not attempt to identify any individual or institution referenced in MagicCT data.I will exercise all reasonable and prudent care to avoid disclosure of the identity of any individual or institution referenced in MagicCT restricted data in any publication or other communication.I will not share access to MagicCT restricted data with anyone else.I will exercise all reasonable and prudent care to maintain the physical and electronic security of MagicCT restricted data.If I find information within MagicCT restricted data that I believe might permit identification of any individual or institution, I will report the location of this information promptly by email to the corresponding author, citing the location of the specific information in question.I have requested access to MagicCT restricted data for the sole purpose of lawful use in scientific research, and I will use my privilege of access, if it is granted, for this purpose and no other.I have completed a training program in human research subject protections and HIPAA regulations, and I am submitting proof of having done so.I will indicate the general purpose for which I intend to use the database in my application.If I openly disseminate my results, I will also contribute the code used to produce those results to a repository that is open to the research community.This agreement may be terminated by either party at any time, but my obligations with respect to MagicCT data shall continue after termination. License: CC0-1.0. Contact: [e-mail]