1. A device for selectively compressing target tissue for magnetic resonance imaging of the target tissue, said compression device comprising: a moveable structure including a contact surface that is configured to contact the target tissue a non-contact surface disposed opposite the contact surface; a non-moving structure disposed opposite and substantially parallel to the non-contact surface of the movable member; a moving mechanism operably coupled to the moveable member, the mechanism including a plurality of fluid actuatable devices, each being operably coupled to the moveable structure; wherein the fluid actuatable devices are each configured and arranged such that the device selectively moves the moveable structure in a compression cycle in a first direction to compress the tissue between the non-moving structure and the moveable structure, responsive to admission of pressurized fluid in one fluid direction and moves the moveable structure in a relaxation cycle in a second direction so as to allow the tissue to relax responsive to admission of pressurized fluid in another fluid direction and wherein the fluid actuatable devices are further configured to be synchronized with an magnetic resonance imaging machine, such that the target tissue can be imaged simultaneous with a compression cycle and such that the target tissue can be imaged simultaneous with a relaxation cycle; and wherein the moveable member and the member moving mechanism are made of MRI-compatible materials.