The United States of America, as Represented by the Secretary, Department of Health and Human Services

Hellmut Merkic

Alan Koretsky

Jeff Duyn

Shumin Wang

An apparatus for imaging includes: a main magnet to generate a substantially uniform main Bmagnetic field through an examination region; and a coil system including a first coil layer and a second coil layer disposed substantially parallel to the first coil layer with a defined air gap in a radial direction, the first coil layer including a first coil array, the second coil layer including a second coil array, the first and second coil arrays being coupled and cooperating to selectively produce a prespecified Bmagnetic field within the examination region.

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Bethesda, MD, United States of America

Hellmut Merkic