• Chris Tihansky has been named president of Cellvizio (Philadelphia, Pennsylvania). Tihansky most recently was president/CEO of Surgical Services, a division of Teleflex. Cellvizio is a developer of in vitro cellular imaging.

• Mobile Imaging Development (Las Vegas) said that its limited partnership, Mobile Diagnostic Centers, has named John Nichols, MD, medical director. The company said that Nichols is a “recognized expert in radiology with over 25 years of experience.” Mobile Imaging is a healthcare management company.