Abstract: Thermal drug treatment of tumor tissue is obtained by attaching a thermally active drug to carrier molecules which have an affinity to tumor tissue. Localized heating is performed on the tumor tissue, thereby activating the drug in the tumor tissue. The end result may be concentrated delivery of a drug to a chosen tissue, or, in the case where the drug creates a toxin when heated, selective tissue destruction of a selected locations heated. The localized heat may be applied by focused ultrasound heating.

Abstract: A magnetic resonance (MR) imaging system for use in a medical procedure employs an open main magnet allowing access to a portion of a patient within an imaging volume, for producing a main magnetic field over the imaging volume; a set of open gradient coils which provide magnetic fields gradients over the imaging volume without restricting access to the imaging volume; a radiofrequency coil set for transmitting RF energy into the imaging volume to nutate nuclear spins within the imaging volume and receive an MR response signal from the nuclear spins; and a pointing device for indicating the position and orientation of a plane in which an image is to be acquired; an image control means for operating power supplies for the gradient coils and the RF coils to acquire an MR signal from the desired imaging plane; and a computation unit for constructing an image of the desired imaging plane.

Abstract: A method of making an integrated circuit is described. The method includes providing a substrate of single crystal silicon semiconductor material having low minority carrier lifetime, forming an insulating layer of silicon dioxide overlying a major surface of the substrate, forming a plurality of apertures in the insulating layer which expose a plurality of selected portions of the major surface of the substrate, and epitaxially growing a layer of silicon on each of the selected portions of the major surfaces of the substrate.

Abstract: A reflective backing member has an array of closely spaced corner reflectors adjacent to the input surface of a layer of material that absorbs high energy radiation events and converts them to light photons. The corner reflective surface causes rearward traveling light photons to be reflected along a path substantially parallel to the initial rearward path so that the reflective member provides a high quality reflective surface with less degradation of spatial resolution of an image produced by the light photons than occurs with conventional reflective backing members.