[The image diagnosis of dysbaric osteonecrosis].

Objective: To investigate the imaging features of dysbaric osteonecrosis.

Methods: The imaging appearances of four patients with dysbaric osteonecrosis caused by diving, were analyzed retrospectively.

Results: In four cases with dysbaric osteonecrosis including case 1 with stage I, case 2 with stage II, case 3 and case 4 with stage III, there were a case with the lesion in a bone and other 3 cases with lesions in multiple bones,and a case with the lesion in unilateral bone and 3 cases with the lesions in lateral bones.