MuscleMap — Whole-Body Muscle (MRI)

Run this model →
Version 2.0 · Licence MIT · Released 2026-05-05
MRI

MuscleMap segments muscles and bones in whole-body MRI scans, with coverage from the neck through the trunk to the legs.

Available tasks (1)

Task options define what the model does. Choose one when you submit a scan or configure generation.

Input
MRI scan.
Output
Segmentation label map (.nii.gz).

Whole body (99 muscles & bones)

Default

Segment muscles and bones across different MRI contrasts using one whole-body task. Output labels cover 99 anatomical structures.

View 99 output classes
1 levator_scapulae_left2 levator_scapulae_right3 semispinalis_cervicis_and_multifidus_left4 semispinalis_cervicis_and_multifidus_right5 semispinalis_capitis_left6 semispinalis_capitis_right7 splenius_capitis_left8 splenius_capitis_right9 sternocleidomastoid_left10 sternocleidomastoid_right11 longus_colli_left12 longus_colli_right13 trapezius_left14 trapezius_right15 supraspinatus_left16 supraspinatus_right17 subscapularis_left18 subscapularis_right19 infraspinatus_left20 infraspinatus_right21 deltoid_left22 deltoid_right23 rhomboid_left24 rhomboid_right25 thoracolumbar_multifidus_left26 thoracolumbar_multifidus_right27 erector_spinae_left28 erector_spinae_right29 psoas_major_left30 psoas_major_right31 quadratus_lumborum_left32 quadratus_lumborum_right33 lattisimus_dorsi_left34 lattisimus_dorsi_right35 gluteus_minimus_left36 gluteus_minimus_right37 gluteus_medius_left38 gluteus_medius_right39 gluteus_maximus_left40 gluteus_maximus_right41 tensor_fascia_latae_left42 tensor_fascia_latae_right43 iliacus_left44 iliacus_right45 ilium_left46 ilium_right47 sacrum48 femur_left49 femur_right50 piriformis_left51 piriformis_right52 pectineus_left53 pectineus_right54 obturator_internus_left55 obturator_internus_right56 obturator_externus_left57 obturator_externus_right58 gemelli_and_quadratus_femoris_left59 gemelli_and_quadratus_femoris_right60 vastus_lateralis_left61 vastus_lateralis_right62 vastus_intermedius_left63 vastus_intermedius_right64 vastus_medialis_left65 vastus_medialis_right66 rectus_femoris_left67 rectus_femoris_right68 sartorius_left69 sartorius_right70 gracilis_left71 gracilis_right72 semimembranosus_left73 semimembranosus_right74 semitendinosus_left75 semitendinosus_right76 biceps_femoris_long_head_left77 biceps_femoris_long_head_right78 biceps_femoris_short_head_left79 biceps_femoris_short_head_right80 adductor_magnus_left81 adductor_magnus_right82 adductor_longus_left83 adductor_longus_right84 adductor_brevis_left85 adductor_brevis_right86 anterior_compartment_left87 anterior_compartment_right88 deep_posterior_compartment_left89 deep_posterior_compartment_right90 lateral_compartment_left91 lateral_compartment_right92 soleus_left93 soleus_right94 gastrocnemius_left95 gastrocnemius_right96 tibia_left97 tibia_right98 fibula_left99 fibula_right

Research details

Training data
MuscleMap contrast-agnostic whole-body model — wholebody weights v1.3 (the model shipped with the MuscleMap toolbox v2.0). Trained across multiple MRI contrasts and sites for contrast-agnostic skeletal-muscle and bone segmentation. Predominantly adult human anatomy.
Intended use
Research segmentation and quantitative analysis of skeletal muscle and bone in whole-body or regional MRI — cohort analysis, morphometry, and a starting point for manual correction. NOT for primary diagnosis or treatment planning.
Known limitations
MRI only. Accuracy degrades on severe pathology, post-surgical anatomy, implants/metal artefact, paediatric anatomy, and non-standard fields of view. Small or thin structures are the least reliable.
Species
human

Citations & references

Citing Nalvera.AI

Please cite the platform alongside the model's own paper listed above — the model authors deserve the credit for the method.

@misc{nalvera,
  title        = {Nalvera.AI: a cloud platform for medical-imaging AI},
  author       = {{van der Heyden, Brent}},
  year         = {2026},
  howpublished = {\url{https://nalvera.ai}},
  note         = {Model: MuscleMap — Whole-Body Muscle (MRI) v2.0. Accessed YYYY-MM-DD}
}
Research use only — not a medical device. Outputs are not validated for clinical diagnosis or treatment.
Run this model → ← Back to models