Whether it is performed on a generator-powered radiography unit or a gleaming fusion scanner fresh from the factory, radiology exists to identify illnesses and injuries and to inform the physicians who will treat them. In this special edition, Diagnostic Imaging looks at where, how, and by whom radiology is performed around the world.

The "where" alone is fascinating: from yurts on the Asian steppe to posh cruise ships in the Caribbean and research posts on an Antarctic ice shelf. The "how" and the "who" also vary widely: The residency-trained radiologist familiar in industrial nations simply doesn't exist in many parts of the developing world. There, images may be read by someone who has never seen a radiology textbook. The x-ray and ultrasound machines that person uses may be generations removed from the high-field MR and fusion scanners of Boston, Tokyo, or Amsterdam.

Join us in meeting educators, entrepreneurs, and strategists who are working to educate the world's film readers, to bring subspecialty expertise to remote corners of the earth, and to make the most of resources to match local healthcare priorities. Throughout the year, by visiting diagnosticimaging.com, you can learn more about colleagues around the world as they discuss research projects, collaborations, or philanthropy. Visit monthly for news, interviews, and resources.

Radiology is united in the mission to improve patient diagnosis and care, but it also is vibrant with diversity. Find out more about your colleagues' work and lives in the pages that follow.