Fig. 4: Visualization of PBTs and bone infections in four cases respectively.
From: Deep learning models in classifying primary bone tumors and bone infections based on radiographs
a Visualization of PBTs. Patient 1, a 10-year-old girl with chondrosarcoma on the left proximal humerus; Patient 2, a 10-year-old boy with a simple bone cyst on the right humerus; Patient 3, a 65-year-old female with giant cell tumor of bone on the left distal femur; Patient 4, a 9-year-old boy with osteosarcoma on the left distal femur. b Visualization of Bone infection. Patient 5, a 72-year-old male with chronic suppurative osteomyelitis of the lower right femur; Patient 6, a 31-year-old male with tuberculosis of lumbar vertebrae 3 and 4 with spinal canal stenosis; Patient 7, a 68-year-old female with tuberculosis of left knee joint; Patient 8, a 65-year-old male with right distal femoral osteomyelitis. Starting from the left, the first column is the original flat film image. The second column is an area cut as small as possible against the edge of the lesion. The third column is the GradCAM-generated heat map. The fourth is the heat map generated by ScoreCAM.
