| # L3 · Multimodal grounding | |
| L3 contains 69 pathology cases, 200 sequence questions, 2,700 structure cards from 100 patients, 400 T-stage cases and 400 N-stage cases. | |
| `T400.jsonl` and `N400.jsonl` are the primary stage labels. `requests/T400.jsonl` and `requests/N400.jsonl` contain prompts and image paths relative to this L3 directory. Extract `images_and_inputs.tar.gz` here and the seven MRI shards inside `extensions/`. | |
| T400 comprises 100 structure-card patients and 300 sequence-group patients; N400 is a disjoint cohort using sequence groups. `T-Stg.jsonl` provides the labels for the 100-patient anatomical panel used in structure-based diagnostic analyses. `Path.jsonl`, `Seq.jsonl`, `Struct.jsonl` and `secondary_labels/` contain the other task references. | |
| See [the MRI group guide](extensions/README.md) for sequences, anatomical coverage and model-specific sampling. | |