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...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7336766 | X-ray system and its driving method An X-ray apparatus includes a rotary anode X-ray tube, a stator coil, and a drive-power-supply device. The rotary anode X-ray tube has an anode target arranged in a vacuum envelope, a rotary body coupled to the anode target and configured to rotate together with the... | 02/26/2008 |
| 7224768 | X-ray apparatus with anode rotation number detecting means An X-ray tube apparatus (2) having an anode rotating mechanism for preventing damage of the anode (23) of the X-ray tube apparatus thereby to shorten the X-ray exposure waiting time. When the measured number of revolutions of a rotary anode is determin... | 05/29/2007 |
| 6891924 | Control apparatus for controlling radiotherapy irradiation system A control apparatus for a radiotherapy irradiation system in which a calculation time required for calculation to be performed after restrictions are modified is shortened. The control apparatus includes a unit for setting an initial solution indicating an initial i... | 05/10/2005 |
| 6785578 | User input device for controlling medical imaging equipment motion A system including a user input device for controlling a position of medical equipment is described. In an example embodiment, the user input device is configured to be coupled to the medical equipment and is responsive to an operator input representation of a desir... | 08/31/2004 |
| 6754298 | Method for statistically reconstructing images from a plurality of transmission measurements having energy diversity and image reconstructor apparatus utilizing the method A method for statistically reconstructing images from a plurality of transmission measurements having energy diversity and image reconstructor apparatus utilizing the method are provided. A statistical (maximum-likelihood) method for dual-energy X-ray CT accommodate... | 06/22/2004 |
| 6714629 | Method for registering a patient data set obtained by an imaging process in navigation-supported surgical operations by means of an x-ray image assignment The invention relates to a method for registering a patient data set obtained by an imaging process in camera navigation-supported surgical operations, comprising the following steps: producing a patient data set by means of a tomographic scan or an imaging p... | 03/30/2004 |
| 6687329 | Computer aided acquisition of medical images The invention provides a technique for acquiring subsequent image data in a medical diagnostic context based upon analysis of initial image data. The initial image data is processed via a computer aided diagnosis algorithm to determine whether additional ... | 02/03/2004 |
| 6683933 | Three-dimensional image display device in network A three-dimensional image processing system enables multiple users at distant locations employing ordinary personal computers to construct and observe three-dimensional images simultaneously. In a network environment, a three-dimensional image processing ... | 01/27/2004 |
| 6678346 | Cone-beam CT scanner with image reconstruction using multiple sub-images A computed tomography imaging system includes a source of a conical beam of radiation and a two-dimensional detector array arranged on opposite sides of an axis of rotation. Projection data is acquired in a conventional manner as the source and detector a... | 01/13/2004 |
| 6674833 | Virtual fluoroscopic system and method A method and system for obtaining desired subsurface views of a patient target site are disclosed. The system includes a scan-data file for storing, in digital form, volumetric scan data of a surgical site of a patient, a pointer for indicating the positi... | 01/06/2004 |
| 6674879 | Echocardiography workstation A digital image processing system for enhancing the image quality and diagnostic capabilities of conventional medical diagnostic ultrasound imaging systems and, more particularly, to an echocardiography workstation (10) which provides speckle reduction (2... | 01/06/2004 |
| 6665370 | Computed tomography method and apparatus for acquiring images dependent on a time curve of a periodic motion of the subject In a spiral scan cone beam computed tomography method and apparatus, the output data are divided into sub-segments being shorter than the length required for the reconstruction of a CT image. Segment images having inclined image plane relative to the syst... | 12/16/2003 |
| 6658080 | Displaying image data using automatic presets A computer automated method for setting visualization parameter boundaries in a preset for displaying an image from a 3D data set applicable to magnetic resonance (MR) data, computer tomography (CT) data and other 3D data sets obtained in medical imaging ... | 12/02/2003 |
| 6654442 | Methods and apparatus for weighting projection data A method for weighting projection data includes selecting a region that includes a plurality of projection data samples, dividing the region into a plurality of equally sized sub-regions, and weighting the equally sized sub-regions using a location depend... | 11/25/2003 |
| 6647084 | Method and apparatus for filtering projection data of a helical scan A method for filtering projection data of a helical scan of an object includes acquiring projection data representing a helical scan of an object, generating a weighting function based on the acquired projection data, determining a scaling function for th... | 11/11/2003 |
| 6639966 | Method for checking the presentation quality of imaging systems for medical diagnostics with respect to ring artifacts A method is used for checking the presentation quality of imaging systems for medical diagnostics with regard to ring artifacts. The method includes creating at least one test image and defining concentric circles in the test image around a rotational cen... | 10/28/2003 |
| 6614874 | Robust and efficient decomposition algorithm for digital x-ray de imaging The present technique provides a variety of processing schemes for decomposing soft tissue and bone images more accurately from low and high-energy images acquired from an imaging system, such as a dual-energy digital radiography system using flat-panel t... | 09/02/2003 |
| 6553091 | X-ray CT apparatus An X-ray CT apparatus includes a pair of an involute gear and a magnetic sensor as a structure for detecting the rotation of the gantry rotary section in a non-contact fashion. The involute gear imparts a periodic change in the magnetic flux in the circum... | 04/22/2003 |
| 6549607 | Method and system for creating task-dependent three-dimensional images A system and method for producing three-dimensional representations of an object. A first series of projected images of the selected object is recorded in a first projection plane and a second series of projected images of the selected object is recorded ... | 04/15/2003 |
| 6507633 | Method for statistically reconstructing a polyenergetic X-ray computed tomography image and image reconstructor apparatus utilizing the method A method for statistically reconstructing an X-ray computed tomography image produced by a single X-ray CT scan having a polyenergetic source spectrum and an image reconstructor which utilize a convergent statistical algorithm which explicitly accounts fo... | 01/14/2003 |
| 6504893 | Method for examining a body region executing a periodic motion In a method for examining a body region of an examination subject executing a periodic motion with a CT apparatus having a multi-line detector system in spiral mode, the X-ray source is activated and deactivated for the emission of X-rays substantially sy... | 01/07/2003 |
| 6430259 | Medical apparatus provided with a collision detector A medical apparatus for (radiation) diagnosis or therapy can be provided with moving parts 6. Such an apparatus must be provided with a collision detection device 26, 28, 30. A known collision sensor measures the supply current for the drive motor and hen... | 08/06/2002 |
| 6341155 | Pulse detection system for X-ray tubes A rotation monitoring system (70) detects the rotational speed of an anode (10) of an x-ray tube during use. The system (70) includes a detector (72), which detects a pulse of secondary x-rays generated by the interaction of a stream (C) of electrons with... | 01/22/2002 |
| 6327326 | Method for image reconstruction for a computed tomography apparatus In a method for image reconstruction in a computed tomography apparatus, whereby only the minimally possible projection angle range g (ଲ) for the respective fan angle ଲ is employed for all measured values S(ଲ, ) ... | 12/04/2001 |
| 6208132 | Non-intrusive speed sensing for induction motors A sensing coil affixed to the outside of an induction motor housing uses flux signals from the motor to measure motor speed. In particular, components of the rotor current are measured and compared to analysis from stator fundamentals and sidebands to det... | 03/27/2001 |
| 6178220 | CT systems with oblique image planes A method for reconstructing one or more non-axial image slices in a CT scanner, comprising: acquiring X-ray attenuation data over an axial range; and processing the attenuation data to determine CT values at a plurality of points along one or more surface... | 01/23/2001 |
| 6130930 | Exact region of interest cone beam imaging without circle scans A scanning and data acquisition method and apparatus for three dimensional (3D) computerized tomography (CT) imaging of an ROI in an object, wherein data is calculated on a plurality of line segments L formed in cone beam projection data acquired on a det... | 10/10/2000 |
| 6055291 | Systems, methods and apparatus for reconstructing images The present invention, in one form, is an apparatus for performing image reconstruction using data obtained by a four beam helical scan. In reconstructing an image, projection data arrays are generated. Such projection data is then weighted by weighting f... | 04/25/2000 |
| 6044125 | Method for the post-processing of a tomogram, and computed tomography apparatus operating according to the method In a method for the post-processing of a tomogram, and a computed tomography apparatus operating according to this method, a universal computer is employed for post-processing of a reconstructed tomogram of a slice of an examination subject, the tomogram ... | 03/28/2000 |
| 5883935 | Object detector and associated driving device for a medical diagnostic apparatus An apparatus for medical diagnosis and/or therapy which includes an electromagnetic proximity sensor (20-1, 20-2, 20-3, 20-4) which detects the presence of an object (for example, 28) directly in front of the sensor. By coupling the main drive directions ... | 03/16/1999 |
| 5828210 | X-ray tube anode drive speed monitor including flux pickup coil A method for monitoring a rotor speed of an X-ray tube anode drive includes acquiring axial flux pickup data from the rotor, using the axial flux pickup data to provide a flux spectrum, and estimating the rotor speed by analyzing the flux spectrum. The st... | 10/27/1998 |
| 5774625 | Arrangement for monitoring the rotational speed of a rotary-anode drive motor of x-ray The invention relates to an X-ray apparatus, comprising a rotary-anode X-ray tube, a device for monitoring the rotational speed of a rotary-anode drive motor of the X-ray tube, a sensor circuit for determining an angle signal which is dependent on the pha... | 06/30/1998 |
| 5566219 | X-ray apparatus comprising of a circuit arrangement for accelerating and decelerating the rotary anobe of a rotary-anode x-ray tube The invention relates to an X-ray apparatus, comprising a circuit arrangement for accelerating and decelerating the rotary anode of a rotary-anode X-ray tube in which phase-shifted alternating voltages can be applied to the stator windings of the drive mo... | 10/15/1996 |
| 5235627 | X-ray diagnostic system In order to compensate offsets in an X-ray irradiated field, an X-ray diagnostic system comprises: an X-ray source including a movable X-ray diaphram unit; an X-ray camera unit for radiographing a patient as an object; a holding means for holding the X-ra... | 08/10/1993 |
| 5175754 | Gantry position reference for tomographic scanners A CT apparatus produces a trigger position signal having a programmable angular spacing, for triggering the acquisition of projections, from an encoder index pulse having a different fixed angular spacing. An estimation circuit estimates the time of occur... | 12/29/1992 |
| 5140246 | High performance high speed starter for an x-ray tube rotor A sationary rotatable anode (42) of an x-ray tube (10) is electrically connected to a high speed starter (24). The starter (24) includes an inductive rotor (44) connected to the anode (42), a main stator winding (50) and an auxiliary stator winding (52). ... | 08/18/1992 |
| 5090041 | X-ray tube anode speed reducer A rotor speed adjustment circuit (60) reduces the rotational speed of an anode (32) of an x-ray tube (14) in a diagnostic apparatus (10). An AC current (64) from an AC current source (54) is applied to one stator winding (52). A parallel connected diode (... | 02/18/1992 |
| 5060251 | X-ray diagnostics generator having a rotating anode x-ray tube An x-ray diagnostics generator which includes a rotating anode x-ray tube includes circuitry for setting the speed of rotation of the anode dependent on exposure parameters. At particular rotational speeds, the motor bearing for the rotating anode is subj... | 10/22/1991 |
| 5048070 | X-ray tube support apparatus An X-ray tube support apparatus includes: an X-ray tube support mechanism for supporting an X-ray tube to be vertically extendible/movable; a guide unit, having moving paths which allow movement in two-dimensional directions parallel to a ceiling surface,... | 09/10/1991 |
| 4829551 | Biphase quadrature drive for an x-ray tube rotor An x-ray tube (10) imaging system, such as a computed tomography scanner, includes a cathode (40) for generating a stream of electrons. A rotating anode (42) is placed in a path of the electron stream and generates x-rays as a result of collisions therewi... | 05/09/1989 |
