Patents by Inventor Richard L. Webber
Richard L. Webber has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20110092812Abstract: A system for constructing image slices through a selected object, the system comprising an identifiable fiducial reference in a fixed position relative to the selected object, wherein the fiducial reference comprises at least two identifiable reference markers. A source of radiation is provided for irradiating the selected object and the fiducial reference to form a projected image of the selected object and the fiducial reference which is recorded by a recording medium.Type: ApplicationFiled: September 20, 2010Publication date: April 21, 2011Inventors: Richard L. Webber, Roger A. Horton
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Patent number: 7801587Abstract: A system for constructing image slices through a selected object, the system comprising an identifiable fiducial reference in a fixed position relative to the selected object, wherein the fiducial reference comprises at least two identifiable reference markers. A source of radiation is provided for irradiating the selected object and the fiducial reference to form a projected image of the selected object and the fiducial reference which is recorded by a recording medium.Type: GrantFiled: August 16, 2006Date of Patent: September 21, 2010Assignee: Wake Forest University Health SciencesInventors: Richard L. Webber, Roger A. Horton
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Patent number: 7110807Abstract: A system for constructing image slices through a selected object, the system comprising an identifiable fiducial reference in a fixed position relative to the selected object, wherein the fiducial reference comprises at least two identifiable reference markers. A source of radiation is provided for irradiating the selected object and the fiducial reference to form a projected image of the selected object and the fiducial reference which is recorded by a recording medium.Type: GrantFiled: October 25, 2004Date of Patent: September 19, 2006Assignee: Wake Forest University Health SciencesInventors: Richard L. Webber, Roger A. Horton
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Patent number: 6810278Abstract: A system for constructing image slices through a selected object, the system comprising an identifiable fiducial reference in a fixed position relative to the selected object, wherein the fiducial reference comprises at least two identifiable reference markers. A source of radiation is provided for irradiating the selected object and the fiducial reference to form a projected image of the selected object and the fiducial reference which is recorded by a recording medium.Type: GrantFiled: May 21, 2001Date of Patent: October 26, 2004Assignee: Wake Forest UniversityInventors: Richard L. Webber, Roger A. Horton
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Patent number: 6801597Abstract: 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 in a second projection plane. The first and the second series of projected images are rendered at a common magnification. The first set of projected images is then integrated into a first three-dimensional volume and the second set of projected images is integrated into a second three-dimensional volume. The three-dimensional representation of the object is then produced by combining one projected image from the first set of projected images with one projected image from the second set of projected images. Alternatively, the three-dimensional representation is produced by merging the first three-dimensional volume with the second three-dimensional volume.Type: GrantFiled: April 14, 2003Date of Patent: October 5, 2004Assignee: Wake Forest University Health SciencesInventor: Richard L. Webber
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Publication number: 20040008809Abstract: 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 in a second projection plane. The first and the second series of projected images are rendered at a common magnification. The first set of projected images is then integrated into a first three-dimensional volume and the second set of projected images is integrated into a second three-dimensional volume. The three-dimensional representation of the object is then produced by combining one projected image from the first set of projected images with one projected image from the second set of projected images. Alternatively, the three-dimensional representation is produced by merging the first three-dimensional volume with the second three-dimensional volume.Type: ApplicationFiled: April 14, 2003Publication date: January 15, 2004Inventor: Richard L. Webber
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Patent number: 6549607Abstract: 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 in a second projection plane. The first and the second series of projected images are rendered at a common magnification. The first set of projected images is then integrated into a first three-dimensional volume and the second set of projected images is integrated into a second three-dimensional volume. The three-dimensional representation of the object is then produced by combining one projected image from the first set of projected images with one projected image from the second set of projected images. Alternatively, the three-dimensional representation is produced by merging the first three-dimensional volume with the second three-dimensional volume.Type: GrantFiled: April 28, 2000Date of Patent: April 15, 2003Assignee: Wake Forest UniversityInventor: Richard L. Webber
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Publication number: 20020170610Abstract: Fluid transport and containment systems are protected from rupture related to an expanded volume within the systems. A fluid transport system, such as a water supply pipe, has a relief channel along its length configured for expanding outwardly when fluids contained in the pipe freeze and expand. A unitary pipe configuration including a pipe wall and an integral core structure that can be sealed at each end provides a means for expansion sufficient to resist freeze-induced rupture. Such pipe configurations can be used with conventional pipes and pipe fittings and with adapters adapted to fit both the improved pipes and conventional pipes and pipe fittings.Type: ApplicationFiled: March 20, 2001Publication date: November 21, 2002Inventor: Richard L. Webber
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Publication number: 20010034482Abstract: A system for constructing image slices through a selected object, the system comprising an identifiable fiducial reference in a fixed position relative to the selected object, wherein the fiducial reference comprises at least two identifiable reference markers. A source of radiation is provided for irradiating the selected object and the fiducial reference to form a projected image of the selected object and the fiducial reference which is recorded by a recording medium.Type: ApplicationFiled: May 21, 2001Publication date: October 25, 2001Inventors: Richard L. Webber, Roger A. Horton
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Patent number: 6289235Abstract: A system for constructing image slices through a selected object, the system comprising an identifiable fiducial reference in a fixed position relative to the selected object, wherein the fiducial reference comprises at least two identifiable reference markers. A source of radiation is provided for irradiating the selected object and the fiducial reference to form a projected image of the selected object and the fiducial reference which is recorded by a recording medium.Type: GrantFiled: March 5, 1998Date of Patent: September 11, 2001Assignee: Wake Forest UniversityInventors: Richard L. Webber, Roger A. Horton
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Patent number: 6081577Abstract: 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 in a second projection plane. The first and the second series of projected images are rendered at a common magnification. The first set of projected images is then integrated into a first three-dimensional volume and the second set of projected images is integrated into a second three-dimensional volume. The three-dimensional representation of the object is then produced by combining one projected image from the first set of projected images with one projected image from the second set of projected images. Alternatively, the three-dimensional representation is produced by merging the first three-dimensional volume with the second three-dimensional volume.Type: GrantFiled: February 19, 1999Date of Patent: June 27, 2000Assignee: Wake Forest UniversityInventor: Richard L. Webber
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Patent number: 5668844Abstract: A self-calibrating tomosynthetic x-ray system is provided. A calibrated device for recording radiographic images of a selected object irradiated by a source of radiation includes a first radiolucent radiographic recording medium in the form of a CCD device for recording a first projected radiographic image of the selected object. A second radiographic recording medium in the form of a CCD device is supported in fixed generally parallel position relative to the first radiographic recording medium to permit radiation from the source to pass through the first radiographic recording medium and to impinge upon the second radiographic recording medium for recording a second projected radiographic image of the selected object. A radiopaque fiducial reference in the form of a grid is supported in fixed position generally between the first and second radiographic recording mediums to permit a projected image of the radiopaque fiducial reference to be recorded on the second radiographic recording medium.Type: GrantFiled: October 20, 1994Date of Patent: September 16, 1997Inventor: Richard L. Webber
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Patent number: 5359637Abstract: A self-calibrating tomosynthetic x-ray system is provided. A calibrated device for recording radiographic images of a selected object irradiated by a source of radiation includes a first radiolucent radiographic recording medium in the form of a CCD device for recording a first projected radiographic image of the selected object. A second radiographic recording medium in the form of a CCD device is supported in fixed generally parallel position relative to the first radiographic recording medium to permit radiation from the source to pass through the first radiographic recording medium and to impinge upon the second radiographic recording medium for recording a second projected radiographic image of the selected object. A radiopaque fiducial reference in the form of a grid is supported in fixed position generally between the first and second radiographic recording mediums to permit a projected image of the radiopaque fiducial reference to be recorded on the second radiographic recording medium.Type: GrantFiled: April 28, 1992Date of Patent: October 25, 1994Assignee: Wake Forest UniversityInventor: Richard L. Webber
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Three-dimensional panoramic dental radiography method and apparatus which avoids the subject's spine
Patent number: 5214686Abstract: A panoramic dental radiography system projects multiple vertical, fan-shaped radiation beams through a subject's teeth and onto multiple detectors, with each fan-shaped beam avoiding the subject's spine. The radiographic source and radiographic detectors are rotated about a vertical axis, so that the detected radiation may be tomographically processed to produce a panoramic image of the teeth. The multiple vertical fan-shaped radiation beams are projected on either side of the spine, to reduce the radiographic dosage to the spine and to prevent the spine from blurring the panoramic radiograph. The resulting multiple projections can be tomosynthetically processed to produce a three-dimensional image of tissues of diagnostic interest, free of image artifacts produced by irradiation of the spine.Type: GrantFiled: December 13, 1991Date of Patent: May 25, 1993Assignee: Wake Forest UniversityInventor: Richard L. Webber -
Patent number: 5040539Abstract: A non-invasive device which determines the pulp oxygenation level of a tooth and the vitality of a tooth using multiple-wavelength optical plethysmography. A sensor is shaped to be mounted on a tooth and circuitry for processing a signal from the sensor and supplied from a photosenstive diode is used. The photosensitive diode in the sensor detects light scattered from the tooth which was emitted from red, green, and infrared LEDs. An electrocardiogram (ECG) monitor is provided so as to produce improved detection reliability by synchronous averaging using the occurrence of the R-wave of the ECG as a time marker. Using this approach, a threshold-of-detection criterion can be established based on an average computed over a period to achieve a desired signal-to-noise ratio.Type: GrantFiled: May 12, 1989Date of Patent: August 20, 1991Assignee: The United States of AmericaInventors: Joseph M. Schmitt, Richard L. Webber, Elijah C. Walker
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Patent number: 4836206Abstract: An optical technique and device for assessing tooth vitality, involving the use of trans-illumination to detect differentially the relative absence of light absorbed by hemoglobin in circulating blood inside a healthy tooth. White light received from an illuminated healthy tooth is relatively devoid of intensity at a wavelength characteristic of absorption by hemoglobin, when compared with light following the same path in the tooth but of a longer wavelength, by taking the ratio of intensities of the two wavelengths the light of one wavelength is relatively more absorbed by hemoglobin or oxyhemoglobin than the other, indicating the relative amount of blood or oxygen in the blood present in the tooth at the time of the measurement. A broad-spectrum light source is rigidly coupled to a split-beam, differentially-filtered photometer incorporating relatively narrow band filters. Vitality is assessed from the ratio of the scattered light at the two wavelengths, and in change of this ratio overtime.Type: GrantFiled: February 25, 1987Date of Patent: June 6, 1989Assignee: The United States of America as represented by the Department of Health and Human ServicesInventors: G. Maret Maxwell, Richard L. Webber
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Patent number: 4247780Abstract: A system for reproducibly aiming an X-ray source array to provide substantial registration of exposure geometry through an organ or a portion of tissue from one examination to the next. The system derives functions or signals based on computer controlled X-ray source point geometries to create multiple images produced from known positions via a detector array which feeds this information to a computer image storage system and which provides for comparison of the detected signals with reference signals originally stored in a memory; the comparison yields correction signals which act to shift the X-ray raster toward restoration of the original effective geometry.Type: GrantFiled: June 8, 1979Date of Patent: January 27, 1981Assignee: The United States of America as represented by the Department of Health, Education and WelfareInventors: Richard L. Webber, Roger N. Nagel