In ClinicalKey, click on 'Get rights and content' from the right side of the chapter or article-level page. You may need to create a RightsLink login.
If you are accessing an image directly from the search results in ClinicalKey, select the image then click on the "View in source" link to get to the chapter or article-level page, then follow the instructions above.
Ask Us if you are having trouble requesting permission.
Alternatively, find a suitable substitute image that allows your reuse.