RECOMIA—a cloud-based platform for artificial intelligence research in nuclear medicine and radiology

EJNMMI Physics

Table 2 Dice index, recall, and precision per organ. Each organ is individually segmented (i.e. the model segmented 24 individual ribs). The metric is presented as the mean over all organs in the same group. The metric for each organ in each group is very similar

Organ	Dice	Recall	Precision
Skull	0.93	0.94	0.92
Mandible	0.90	0.97	0.85
Cervical vertebrae	0.88	0.88	0.88
Thoracic vertebrae	0.91	0.91	0.90
Lumbar vertebrae	0.91	0.91	0.91
Ribs	0.88	0.92	0.85
Sacrum and coccyx	0.94	0.96	0.92
Hip bones	0.96	0.97	0.94
Scapulae	0.95	0.97	0.93
Clavicles	0.94	0.98	0.90
Sternum manubrium	0.93	0.96	0.90
Sternum body	0.92	0.96	0.89
Humerus	0.92	0.95	0.89
Radius	0.94	0.96	0.92
Ulna	0.93	0.98	0.89
Hand	0.87	0.91	0.84
Femur	0.96	0.96	0.97
Tibia	0.96	0.97	0.96
Fibula	0.96	0.96	0.95
Patella	0.96	0.97	0.95
Foot	0.95	0.95	0.96
Adrenal gland	0.61	0.74	0.58
Brain	0.98	0.99	0.96
Lungs	0.98	0.98	0.98
Trachea	0.89	0.91	0.86
Bronchi	0.77	0.86	0.71
Heart	0.92	0.93	0.92
Aorta	0.87	0.88	0.87
Ventricle	0.85	0.88	0.84
Gastrointestinal tract	0.86	0.85	0.89
Liver	0.96	0.97	0.96
Gallbladder	0.78	0.86	0.75
Spleen	0.89	0.93	0.88
Pancreas	0.57	0.68	0.53
Kidneys	0.91	0.95	0.89
Urinary bladder	0.83	0.88	0.81
Prostate	0.82	0.84	0.83
Testes	0.58	0.55	0.66
Muscle gluteus maximus	0.93	0.93	0.92
Average	0.88	0.91	0.87