| Patent Number |
Title Of Patent |
Date Issued |
| 5473654 |
Backprojection for x-ray CT system |
December 5, 1995 |
| An x-ray CT system acquires a series of views during a scan and reconstructs a slice image by backprojecting the filtered projection data from each acquired view. Backprojection is facilitated by employing a Cordic processor that produces the angle (.gamma.) and distance (L) of each |
| 5208581 |
High speed communication apparatus for computerized axial tomography (CAT) scanners with matchin |
May 4, 1993 |
| A high speed communication apparatus for a Computerized Axial Tomography (CAT) scanner utilizes large diameter slip rings to permit continuous rotation of a rotatable gantry. A communication signal is applied at a first point on one slip ring, and is terminated by a resistive termination |
| 5018174 |
High speed communication apparatus for computerized axial tomography (CAT) scanners |
May 21, 1991 |
| A high speed communication apparatus for a computerized axial tomography (CAT) scanner utilizes large diameter slip rings to permit continuous rotation of a rotatable gantry. A communication signal is applied at a first point on one slip ring, and is terminated by a resistive termination |
| 4839805 |
Dual control of image level and window parameters of a display and the like |
June 13, 1989 |
| Dual control of image level and window of a display is accomplished by rotation of a single trackball. Rotation of the trackball within a first band including the X axis controls one parameter, and rotation of the trackball in a second band including the Y axis controls a second para |
| 4653013 |
Altering spatial characteristics of a digital image |
March 24, 1987 |
| The values of pixels in a new image matrix are obtained by mapping pixels of the new matrix in the old matrix and then using polynomial interpolation of a plurality of values of pixels in the old matrix to obtain values of interim pixels in the new matrix and then using polynomial in |
| 4454507 |
Real-time cursor generator |
June 12, 1984 |
| A system for writing cursors on a raster scanned television screen that uses the microprocessor in a display controller to produce blocks of data defining the parameters of vectors that compose the cursor. The blocks are put in a first-in first-out memory during a vertical blanking inerv |
| 4438495 |
Tomography window-level gamma functions |
March 20, 1984 |
| Apparatus for applying a gamma correction to digital CT numbers at a selected level and within a window. A memory is loaded sequentially with the gamma correction lookup table. At the start a counter generates a sequence of addresses, in response to clock pulses. These are addresses to |
