> ## Documentation Index > Fetch the complete documentation index at: https://docs.redbrickai.com/llms.txt > Use this file to discover all available pages before exploring further. # Auto Annotator The RedBrick AI Auto Annotator is an automated segmentation tool that allows teams to easily generate segmentation masks for hundreds of different structures on CT and MR images, which are then inserted into a Project pipeline as pre-labels. To use Auto Annotator, you must have an [active Boost instance](./#creating-a-boost-instance) available in your Organization. *** ## Adding Auto Annotator to a Project The decision to utilize Auto Annotator for a Project must be made **at Project creation.** After a Project has been created, there is no way to retroactively add Auto Annotator to it, as the model will be added to the Project pipeline as a pre-Stage. An example pipeline with Auto Annotator If you have an active Boost instance in your Organization, you will notice that Step (4) of standard Project creation looks slightly different: Project creation with Auto Annotator 1. The Auto Annotator toggle; 2. Object Label mapping window; 3. Model URL selection dropdown; ### Mapping Object Labels After you've enabled Auto Annotator in a Project, you must map the labels that the algorithm will generate to a corresponding entry in your RedBrick Taxonomy. Click on **Map object labels** to open the Mapping window. The Mapping Window The Mapping Window allows you to: 1. Choose which Auto Annotator sub-type you would like to use for this specific Project; 2. Map the output of the designated model sub-type to the Object Labels of your Project's Taxonomy; Mapping model output Each entry in the Auto Annotator Labels list can only be mapped once. However, Taxonomy Labels can be mapped to as many structures as you'd like. Consider the example below, where the model output for `kidney_right` and `kidney_left` are both mapped to a single RedBrick Object Label called `Kidney`. Mapping model output Once you have finished mapping your labels, click on **Save changes**. ### Selecting a Model If you have multiple models integrated with RedBrick AI, you can use the dropdown field to select which model should run on this specific Project. *** ## Running Auto Annotator in a Project Once your Project is created, any [data that you upload](/importing-data/uploading-data-to-redbrick) or [integrate](/importing-data/import-cloud-data) to the Project will automatically pass through the Auto Annotator pre-Stage, where automated annotation will occur. 4 Tasks in the Auto Annotator pre-Stage **You do not need to do anything for Tasks in the Auto Annotator pre-Stage.** After the Auto Annotator is done generating labels, the Task will automatically move to the next Stage in your Project pipeline. Task History of a Task that was labeled automatically Once the Tasks have reached the next Stage in your pipeline, your team can begin work on it. *** ## Boost Models When creating a Project with Auto Annotator enabled, you have the opportunity to select a wide range of potential segmentations for your pre-Stage. A comprehensive list of all libraries and structures can be found below. ### total spleen kidney\_right kidney\_left gallbladder liver stomach pancreas adrenal\_gland\_right adrenal\_gland\_left lung\_upper\_lobe\_left lung\_lower\_lobe\_left lung\_upper\_lobe\_right lung\_middle\_lobe\_right lung\_lower\_lobe\_right esophagus trachea thyroid\_gland small\_bowel duodenum colon urinary\_bladder prostate kidney\_cyst\_left kidney\_cyst\_right sacrum vertebrae\_S1 vertebrae\_L5 vertebrae\_L4 vertebrae\_L3 vertebrae\_L2 vertebrae\_L1 vertebrae\_T12 vertebrae\_T11 vertebrae\_T10 vertebrae\_T9 vertebrae\_T8 vertebrae\_T7 vertebrae\_T6 vertebrae\_T5 vertebrae\_T4 vertebrae\_T3 vertebrae\_T2 vertebrae\_T1 vertebrae\_C7 vertebrae\_C6 vertebrae\_C5 vertebrae\_C4 vertebrae\_C3 vertebrae\_C2 vertebrae\_C1 heart aorta pulmonary\_vein brachiocephalic\_trunk subclavian\_artery\_right subclavian\_artery\_left common\_carotid\_artery\_right common\_carotid\_artery\_left brachiocephalic\_vein\_left brachiocephalic\_vein\_right atrial\_appendage\_left superior\_vena\_cava inferior\_vena\_cava portal\_vein\_and\_splenic\_vein iliac\_artery\_left iliac\_artery\_right iliac\_vena\_left iliac\_vena\_right humerus\_left humerus\_right scapula\_left scapula\_right clavicula\_left clavicula\_right femur\_left femur\_right hip\_left hip\_right spinal\_cord gluteus\_maximus\_left gluteus\_maximus\_right gluteus\_medius\_left gluteus\_medius\_right gluteus\_minimus\_left gluteus\_minimus\_right autochthon\_left autochthon\_right iliopsoas\_left iliopsoas\_right brain skull rib\_left\_1 rib\_left\_2 rib\_left\_3 rib\_left\_4 rib\_left\_5 rib\_left\_6 rib\_left\_7 rib\_left\_8 rib\_left\_9 rib\_left\_10 rib\_left\_11 rib\_left\_12 rib\_right\_1 rib\_right\_2 rib\_right\_3 rib\_right\_4 rib\_right\_5 rib\_right\_6 rib\_right\_7 rib\_right\_8 rib\_right\_9 rib\_right\_10 rib\_right\_11 rib\_right\_12 sternum costal\_cartilages ### total\_MR spleen kidney\_right kidney\_left gallbladder liver stomach pancreas adrenal\_gland\_right adrenal\_gland\_left lung\_left lung\_right esophagus small\_bowel duodenum colon urinary\_bladder prostate sacrum vertebrae intervertebral\_discs spinal\_cord heart aorta inferior\_vena\_cava portal\_vein\_and\_splenic\_vein iliac\_artery\_left iliac\_artery\_right iliac\_vena\_left iliac\_vena\_right humerus\_left humerus\_right scapula\_left scapula\_right clavicula\_left clavicula\_right femur\_left femur\_right hip\_left hip\_right gluteus\_maximus\_left gluteus\_maximus\_right gluteus\_medius\_left gluteus\_medius\_right gluteus\_minimus\_left gluteus\_minimus\_right autochthon\_left autochthon\_right iliopsoas\_left iliopsoas\_right brain ### lung\_vessels lung\_vessels (cite paper) lung\_trachea\_bronchia ### body body body\_trunc body\_extremities skin ### body\_mr body\_trunc body\_extremities (for MR images) ### vertebrae\_mr sacrum vertebrae\_L5 vertebrae\_L4 vertebrae\_L3 vertebrae\_L2 vertebrae\_L1 vertebrae\_T12 vertebrae\_T11 vertebrae\_T10 vertebrae\_T9 vertebrae\_T8 vertebrae\_T7 vertebrae\_T6 vertebrae\_T5 vertebrae\_T4 vertebrae\_T3 vertebrae\_T2 vertebrae\_T1 vertebrae\_C7 vertebrae\_C6 vertebrae\_C5 vertebrae\_C4 vertebrae\_C3 vertebrae\_C2 vertebrae\_C1 ### cerebral\_bleed intracerebral\_hemorrhage (cite paper) ### hip\_implant hip\_implant ### pleural\_pericard\_effusion pleural\_effusion (cite paper) pericardial\_effusion (cite paper) ### head\_glands\_cavities eye\_left eye\_right eye\_lens\_left eye\_lens\_right optic\_nerve\_left optic\_nerve\_right parotid\_gland\_left parotid\_gland\_right submandibular\_gland\_right submandibular\_gland\_left nasopharynx, oropharynx hypopharynx nasal\_cavity\_right nasal\_cavity\_left auditory\_canal\_right auditory\_canal\_left soft\_palate hard\_palate (cite paper) ### head\_muscles masseter\_right masseter\_left temporalis\_right temporalis\_left lateral\_pterygoid\_right lateral\_pterygoid\_left medial\_pterygoid\_right medial\_pterygoid\_left tongue digastric\_right digastric\_left ### headneck\_bones\_vessels larynx\_air thyroid\_cartilage hyoid cricoid\_cartilage zygomatic\_arch\_right zygomatic\_arch\_left styloid\_process\_right styloid\_process\_left internal\_carotid\_artery\_right internal\_carotid\_artery\_left internal\_jugular\_vein\_right internal\_jugular\_vein\_left (cite paper) ### headneck\_muscles sternocleidomastoid\_right sternocleidomastoid\_left superior\_pharyngeal\_constrictor middle\_pharyngeal\_constrictor inferior\_pharyngeal\_constrictor trapezius\_right trapezius\_left platysma\_right platysma\_left levator\_scapulae\_right levator\_scapulae\_left anterior\_scalene\_right anterior\_scalene\_left middle\_scalene\_right middle\_scalene\_left posterior\_scalene\_right posterior\_scalene\_left sterno\_thyroid\_right sterno\_thyroid\_left thyrohyoid\_right thyrohyoid\_left prevertebral\_right prevertebral\_left (cite paper) ### liver\_vessels liver\_vessels liver\_tumor (cite paper) ### oculomotor\_muscles: skull eyeball\_right lateral\_rectus\_muscle\_right superior\_oblique\_muscle\_right levator\_palpebrae\_superioris\_right superior\_rectus\_muscle\_right medial\_rectus\_muscle\_left inferior\_oblique\_muscle\_right inferior\_rectus\_muscle\_right optic\_nerve\_left eyeball\_left lateral\_rectus\_muscle\_left superior\_oblique\_muscle\_left levator\_palpebrae\_superioris\_left superior\_rectus\_muscle\_left medial\_rectus\_muscle\_right inferior\_oblique\_muscle\_left inferior\_rectus\_muscle\_left optic\_nerve\_right ### lung\_nodules lung lung\_nodules (provided by BLUEMIND AI: Fitzjalen R., Aladin M., Nanyan G.) (trained on 1353 subjects, partly from LIDC-IDRI) ### kidney\_cysts kidney\_cyst\_left, kidney\_cyst\_right (strongly improved accuracy compared to kidney\_cysts inside of total task) ### breasts breast