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| Number | Title | Issue Date |
| 7251355 | Three-dimensional labeling apparatus and method When labeling is performed for a three-dimensional image, the present invention aims to reduce time required for labeling in the three-dimensional image by three-dimensionally referring connection relationships among image areas. To achieve this object, the followin... | 07/31/2007 |
| 7245700 | System and method for providing sealing arrangement in X-ray tube A system and method for providing a sealing arrangement in an X-ray tube are provided. The X-ray tube includes a rotating portion having a plurality of ball bearings and a liquid metal within a housing having the ball bearings therein. The rotating portion is config... | 07/17/2007 |
| 7245691 | Radiation tomographic imaging apparatus and imaging method using it A radiation tomographic imaging apparatus includes a scanning device for scanning a predefined region in a subject, a prescribing device for prescribing beforehand a position at which an image of said subject is to be produced at a higher priority in the scan region... | 07/17/2007 |
| 7242749 | Methods and systems for dynamic pitch helical scanning Methods and systems for controlling x-ray exposure during a dynamic pitch helical scan using a translatable table are provided. The system includes a collimator positioned between an x-ray source and an object to be scanned configured to shutter an x-ray fan beam ge... | 07/10/2007 |
| 7218765 | Higher-order moment-based image projection method and image processing apparatus For the purpose of providing an image projection method for incorporating all data values along a projection axis on a projection image produced from three-dimensional data, a pixel value G at a point of intersection of the projection axis and projection plane is de... | 05/15/2007 |
| 7215735 | CT image production method and X-ray CT system A method to make a common procedure adaptable to reconstruction planes whose positions relative to a multi-channel detector are different from one another. A reference procedure required for construction of a CT image based on reference linear data representing one ... | 05/08/2007 |
| 7206383 | Collimator, X-ray irradiator, and X-ray apparatus A collimator includes a pair of first plate members which define an X-ray passing aperture by a spacing between their opposed end faces, a second plate member which is movable in a direction parallel to a moving direction of the first plate members, a pair of third ... | 04/17/2007 |
| 7205766 | Magnet system and MRI system The present invention is intended to provide a magnet apparatus obviating the necessity of shield coils designed to suppress eddy currents. The magnet apparatus has gradient coils disposed in a bore of a cylindrical superconducting magnet, and includes a cylindrical... | 04/17/2007 |
| 7203268 | X-ray CT system and X-ray apparatus An X-ray CT system comprises: an X-ray generator that generates two cone beam X-radiations which pass through two successive slabs; an X-ray detector that detects a two-dimensional distribution of intensities exhibited by the two cone beam X-radiations having passed... | 04/10/2007 |
| 7201515 | System and method for cooling components rotatable about an axis Systems and methods for cooling electronic components that are rotatable about an axis are provided. The system includes a stationary portion, a rotatable portion, and a component cooling system. The stationary portion has a bore there through. The rotatable portion... | 04/10/2007 |
| 7199583 | MR image production method and MRI apparatus A method to generate separate water and fat images includes applying a pulse sequence, which brings about no phase difference between a water signal and a fat signal, so as to acquire calibration data items that provide the distribution of sensitivities of coils, ap... | 04/03/2007 |
| 7190758 | X-ray CT system A method for performing scattered radiation correction. The position of a collimator and the width of a slit are adjusted so that direct radiation will fall on one of a plurality of arrays of detectors. A predetermined phantom is scanned. The scan is performed relat... | 03/13/2007 |
| 7190166 | Magnetic resonance imaging apparatus and magnetic resonance imaging method The present invention provides a magnetic resonance imaging apparatus and a magnetic resonance imaging method which improve the imaging efficiency. A preview scan initiator unit is provided for initiating a preview scan for scanning the slice position set prior to p... | 03/13/2007 |
| 7190763 | Exposure calculation method and radiography system A method of calculating an exposure a patient receives during radiography includes retrieving a value of a dose rate, which is associated with a value of the tube voltage of an X-ray tube, from a first lookup table that is created in advance, retrieving a value of a... | 03/13/2007 |
| 7187750 | Method and apparatus for compensating non-uniform detector collimator plates A method for obtaining data includes scanning an object with radiation to collect projection data using an imaging system having a detector array with detector cells and a post-patient collimator, wherein the post-patient collimator has plates having non-uniform thi... | 03/06/2007 |
| 7187174 | RF receiving coil apparatus and magnetic resonance imaging apparatus With a view to providing a receiving coil which permits a subject to assume a supine position when radiographing the breast of the subject, thereby improving the working efficiency, a receiving coil for receiving a magnetic resonance signal from the breast of a subj... | 03/06/2007 |
| 7186024 | Table control method, patient supporting device, and X-ray imaging apparatus A table control method for controlling a tabletop driven out of a base in the horizontal direction, wherein deflection of a tip of the tabletop due to load is compensated by tilting the tabletop to lift the tip. ... | 03/06/2007 |
| 7187791 | Coil sensitivity map generating method, parallel imaging method, and MRI apparatus For a purpose of improving homogeneity of an image obtained in a self-calibration by a parallel imaging method generally referred to as SENSE (SENSitivity Encoding), sensitivity factors Sn(p) are calculated using an additive image Ab=Σ|Cn... | 03/06/2007 |
| 7187756 | X-ray CT apparatus and X-ray tube An X-ray CT apparatus capable of imaging a subject based on X-rays of multiple energy levels while using an ordinary X-ray detector includes an X-ray tube which generates X-rays from multiple focal points of different 3-dimensional positions sequentially on a time-d... | 03/06/2007 |
| 7187748 | Multidetector CT imaging method and apparatus with reducing radiation scattering A method for scanning an object to reduce image degradation includes scanning the object in a helical mode using a multi-slice CT imaging system having a plurality of detector arrays arranged along a z-axis direction and a radiation source having a beam focal spot. ... | 03/06/2007 |
| 7180293 | MRI apparatus For the purpose of providing an MRI apparatus which gives rise to no phase deviation due to frequency alteration of the RF magnetic field and signals for detection use, the MRI apparatus includes: signal collecting means which detects and collects magnetic resonance... | 02/20/2007 |
| 7176688 | RF coil and MRI apparatus An RF coil includes a plurality of concentric loops lying at different positions along a coil axis, whose sensitivity is improved in a central portion, and a plurality of loops are constructed as circular loops whose circles correspond to those formed by cutting a s... | 02/13/2007 |
| 7177671 | RF coil, RF signal transmitter receiver, RF signal receiver, and magnetic resonance imaging system for the inferior abdomen For the purpose of providing an RF coil that enables satisfactory imaging of the prostate, the RF coil is composed of a first saddle coil and a second saddle coil. The first saddle coil has two loop portions opposed to each other so that they can sandwich the inferi... | 02/13/2007 |
| 7173997 | X-ray CT imaging method and X-ray CT apparatus A method of reducing the distance of rectilinear motion in a helical scan includes defining a rectilinear motion start point La and a rectilinear motion end point Lb within a region of interest ROI for which a CT image is to be created, collecting projection data fr... | 02/06/2007 |
| 7164746 | X-ray CT apparatus and imaging method An imaging method for an X-ray CT apparatus having an X-ray source and an X-ray detector disposed to face the X-ray source with a subject placed therebetween, for rotating at least one of the X-ray source and X-ray detector around the subject and detecting X-rays em... | 01/16/2007 |
| 7157911 | RF shield and MRI system An eddy current induced in an RF shield by an X-axis gradient coil, a Y-axis gradient coil, and a Z-axis gradient coil respectively is homogeneously released to an earth ground simultaneously with induction. An RF shield is connected to a magnet via capacitors at fo... | 01/02/2007 |
| 7155047 | Methods and apparatus for assessing image quality A method for retrospectively measuring a plurality of transmission datasets collected using an imaging system includes acquiring a plurality of multi-axial field-of-view (AFOV) datasets, the datasets including a plurality of pairs of adjacent images, determining a c... | 12/26/2006 |
| 7154272 | Method for controlling static magnetic field and MRI apparatus A Magnetic Resonance Imaging system includes a plurality of auxiliary magnets that are disposed around the main magnets to adjust the interval between the main magnet and the auxiliary magnets and the interval between the main magnet and the auxiliary magnets respec... | 12/26/2006 |
| 7147370 | Light irradiator, lamp assembly, and X-ray apparatus A light irradiator that includes a light source, a light source supporting device which supports the light source replaceably, a first support device which supports the light source supporting device in such a manner that the position of the light source supporting ... | 12/12/2006 |
| 7148686 | Systems and methods for generating a pulse sequence for mitigating a limitation on spatial selectivity A method and apparatus for mitigating limitations on spatial selectivity and frequency selectivity in space- and frequency-selectively generating magnetic resonance signals, when applying a first pulse sequence PS1 for suppressing a frequency component of fat... | 12/12/2006 |
| 7145151 | Reduced complexity interconnect for two dimensional multislice detectors A CT detector module utilizes a simplified FET that effectively sums detector cells in the X direction, allowing for a doubling of scan slices in the Z direction with the same or a lesser number of DAS channels found in conventional CT detector modules. ... | 12/05/2006 |
| 7116535 | Methods and apparatus for protecting an MR imaging system A method of protecting an MR imaging system including a plurality of coil groups includes connecting at least one first diode between terminals of a first coil group, connecting at least one second diode between terminals of a second coil group, wherein the second g... | 10/03/2006 |
| 7113570 | Methods and systems for helical overscan reduction Methods, apparatus and systems for controlling x-ray exposure during a scan with a computed tomography system are provided. The system includes an x-ray source, a collimator, and a detector array. The collimator includes a first cam configured to shutter an x-ray fa... | 09/26/2006 |
| 7111515 | Ultrasonic diagnostic apparatus and driving method therefor An ultrasonic diagnostic apparatus for transmitting ultrasonic signals toward a subject, receiving signals reflected from the subject in response to the transmitted ultrasonic signals, and producing a tomographic image of the subject based on the received signals, i... | 09/26/2006 |
| 7112964 | Eddy current measurement and correction in magnetic resonance imaging systems with a static phantom A method of measuring and correcting eddy currents in a MRI system includes running a pulse sequence using bipolar gradient pulses and a first delay Te, to acquire a phase-difference image and a phase response of a static phantom that fills a majority of a field of ... | 09/26/2006 |
| 7108658 | Method and apparatus for C-plane volume compound imaging Method and apparatus for displaying an enhanced image based on an image plane of data. A volume data set is acquired, and a plane is defined on an image based on the volume data set. The plane may be a C-plane. Data within the volume data set which is defined by the... | 09/19/2006 |
| 7109709 | Magnetic resonance imaging apparatus and central frequency estimating method A method for estimating a central frequency includes defining a slice group containing a plurality of slices parallel to one another within an arbitrary imaged region in a subject, measuring a central frequency of at least one slice contained in the slice group, and... | 09/19/2006 |
| 7106831 | X-ray diaphragm, X-ray irradiator, and X-ray apparatus An X-ray diaphragm which forms a pyramidal X-ray beam with use of a simple construction includes four blades which are arranged in a surrounding relation to four sides so as to form a pyramidal X-ray beam with an X-ray focus as a vertex, the four blades having a str... | 09/12/2006 |
| 7106064 | Method and apparatus for quadrature detection and MRI system A method of eliminating unnecessary frequency components using a quadrature detector. The method includes converting an analog input signal into a digital signal f1(t), and the signal f1 (t) is delayed by a sampling time τ to form a signal f2 (... | 09/12/2006 |
| 7101078 | Methods and systems for imaging system radiation source alignment Methods and systems for aligning an x-ray source position in an imaging system are provided. The imaging system includes a multislice detector array having a plurality of rows of detector cells displaced along a z-axis and an x-ray source for radiating an x-ray beam... | 09/05/2006 |