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| Number | Title | Issue Date |
| 4998236 | Apparatus for high density holographic optical data storage Methods and apparatus for writing and reading data provide storage in a volume of memory material consisting of inhomogenously broadened absorption centers such that a beam of electromagnetic radiation controlled to be independently steered and simultaneo... | 03/05/1991 |
| 4987480 | Multiscale coding of images Image encoding apparatus and methods include recursively decomposing the luminance values of sequential frames into spatio-temporal spectral components, by quadrature mirror filter (QMF) processing of the luminance values. The filtered signals are subsamp... | 01/22/1991 |
| 4973846 | Linear radiation detector Radiation detection methods and apparatus measure ionizing radiation propagating from a radiation source, utilizing a chamber having an electrically conductive sheet, an electrode assembly spaced apart from the conductive sheet and segmented into a plural... | 11/27/1990 |
| 4960109 | Multi-purpose temperature sensing probe for hyperthermia therapy A multi-function probe for use in hyperthermia therapy employs at least one pair of temperature sensors, which may be thermocouples or thermistors. One sensor of the pair includes an exposed electrode which directly measures tissue temperature. The other ... | 10/02/1990 |
| 4938217 | Electronically-controlled variable focus ultrasound hyperthermia system A therapeutic ultrasound hyperthermia system utilizes a phased array of ultrasound transducer elements. By varying the phase delays in the excitation of individual transducer elements, the focal depth of the ultrasonic beam can be varied, without changing... | 07/03/1990 |
| 4938216 | Mechanically scanned line-focus ultrasound hyperthermia system A therapeutic hyperthermia system generates a line-focus beam of ultrasound which can be mechanically scanned across a treatment volume of tissue. The ultilization of a line-focus advantageously reduces the peak intensity of the ultrasonic beam. The syste... | 07/03/1990 |
| 4893624 | Diffuse focus ultrasound hyperthermia system A system for delivering ultrasound hyperthermic therapy to a subject includes a plurality of piezoelectric ultrasound transducer elements arranged in a two-dimensional array to provide multiple sources of ultrasonic energy, and variable activation element... | 01/16/1990 |
