Shoulder 3D Ultrasound Mosaicking Dataset (Pose Estimation vs Hybrid Alignment)

## Dataset Summary - Participants: 5 healthy volunteers (`PA001` to `PA005`) - Trials: 7 total trials - Ultrasound volumes: 321 MHD volumes - Ultrasound humerus segmentations: 62 MHD label maps - MRI bone segmentations: humerus, scapula, and clavicle STL files for each participant - Workspace types: - pose-estimation workspaces using calibrated robot poses - hybrid-refined workspaces using the final refined registrations The trial labels split participant identity from acquisition condition. For example, `PA001_trial_A` and `PA001_trial_B` are two trials from participant `PA001`.