Images can be used from ClinicalKey for educational purposes, but MUST be exported using the ClinicalKey Presentation Maker, which requires sign in to a (free) Elsevier account. The downloaded slides include the proper rights and citation information along with each image, and can be exported to PowerPoint and saved as JPGs.
Other uses of these images may be possible as well, under Fair Use, which is the balance in copyright law that addresses the importance of educational advancement, among other things. Consider the factors of fair use when determining if you can reuse a work.
If this is not for educational purposes and fair use does not apply, consider contacting Elsevier or a permissions brokering agency, such as the Copyright Clearance Center, about obtaining permissions. A fee may be associated. Alternatively, find a suitable substitute image that allows your reuse.
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