Image analysis – Applications – Biomedical applications
Reexamination Certificate
2006-01-24
2006-01-24
Patel, Kanjibhai (Department: 2625)
Image analysis
Applications
Biomedical applications
C600S442000, C378S018000
Reexamination Certificate
active
06990222
ABSTRACT:
A hybrid calibration method uses an calibration phantom (exterior reference) scanned simultaneously with the patient, and one or more known tissues of the subject (interior reference) to create a hybrid calibration reference that improves the measurement of tissue densities throughout the body. In addition, the calibration method is used to quantitatively define boundaries of tissue and organs for more accurate measurements of lengths, areas and volumes. Another aspect of the invention uses the calibrated images to quantitatively preset absolute window/levels for filming and image display, which provides standardized viewing for diagnostic purposes.
REFERENCES:
patent: 2399650 (1946-05-01), Moyer
patent: 2426884 (1947-09-01), Kieffer
patent: 3705383 (1972-12-01), Frayer
patent: 3944830 (1976-03-01), Dissing
patent: 4115691 (1978-09-01), Oldendorf
patent: 4115762 (1978-09-01), Akiyama et al.
patent: 4124799 (1978-11-01), Schittenhelm
patent: 4233507 (1980-11-01), Volz
patent: 4400827 (1983-08-01), Spears
patent: 4475122 (1984-10-01), Green
patent: 4593400 (1986-06-01), Mouyen
patent: 4593406 (1986-06-01), Stone
patent: 4649561 (1987-03-01), Arnold
patent: 4651335 (1987-03-01), Kalender et al.
patent: 4663772 (1987-05-01), Mattson et al.
patent: 4721112 (1988-01-01), Hirano et al.
patent: 4724110 (1988-02-01), Arnold
patent: 4779621 (1988-10-01), Mattson
patent: 4811373 (1989-03-01), Stein
patent: 4829549 (1989-05-01), Vogel et al.
patent: 4852137 (1989-07-01), Mackay
patent: 4922915 (1990-05-01), Arnold et al.
patent: 4941164 (1990-07-01), Schuller et al.
patent: 4947414 (1990-08-01), Stein
patent: 4985906 (1991-01-01), Arnold
patent: 5005196 (1991-04-01), Lanza et al.
patent: 5034969 (1991-07-01), Ozaki
patent: 5040199 (1991-08-01), Stein
patent: 5049746 (1991-09-01), Ito
patent: 5056130 (1991-10-01), Engel
patent: 5068788 (1991-11-01), Goodenough et al.
patent: 5122664 (1992-06-01), Ito et al.
patent: 5123037 (1992-06-01), Picard et al.
patent: 5132995 (1992-07-01), Stein
patent: 5138553 (1992-08-01), Lanza et al.
patent: 5148455 (1992-09-01), Stein
patent: 5150394 (1992-09-01), Karellas
patent: 5187731 (1993-02-01), Shimura
patent: 5222021 (1993-06-01), Feldman et al.
patent: 5247559 (1993-09-01), Ohtsuchi et al.
patent: 5335260 (1994-08-01), Arnold
patent: 5365564 (1994-11-01), Yashida et al.
patent: 5402785 (1995-04-01), Leigh et al.
patent: 5415176 (1995-05-01), Sato et al.
patent: 5465284 (1995-11-01), Karellas
patent: 5521955 (1996-05-01), Gohno et al.
patent: 5528644 (1996-06-01), Ogawa et al.
patent: 5568811 (1996-10-01), Olstad
patent: 5577089 (1996-11-01), Mazess
patent: 5594775 (1997-01-01), Hangartner
patent: 5696805 (1997-12-01), Gaborski et al.
patent: 5712892 (1998-01-01), Weil et al.
patent: 5757877 (1998-05-01), Wilting
patent: 5774519 (1998-06-01), Lindstrom et al.
patent: 5852647 (1998-12-01), Schick et al.
patent: 5870697 (1999-02-01), Chandler et al.
patent: 5949842 (1999-09-01), Schafer et al.
patent: 5953444 (1999-09-01), Joseph et al.
patent: 6026142 (2000-02-01), Gueziec et al.
patent: 6052477 (2000-04-01), Wang et al.
patent: 6127669 (2000-10-01), Sidiropoulos et al.
patent: 6226350 (2001-05-01), Hsieh
patent: 6233304 (2001-05-01), Hu et al.
patent: 6246784 (2001-06-01), Summers et al.
patent: 6249692 (2001-06-01), Cowin
patent: 6278761 (2001-08-01), Kim et al.
patent: 6301495 (2001-10-01), Gueziec et al.
patent: 6320931 (2001-11-01), Arnold
patent: 6372264 (2002-04-01), Dixon
patent: 6490476 (2002-12-01), Townsend et al.
patent: 6605274 (2003-08-01), Dillmann et al.
patent: 6674834 (2004-01-01), Acharya et al.
patent: 6687333 (2004-02-01), Carroll et al.
patent: 6792074 (2004-09-01), Erbel et al.
patent: 0 253 742 (1988-01-01), None
patent: 1 092 392 (2000-10-01), None
Cynthia H. McCollough, Ph.D. et al.,Electron-Beam CT: Use of a Calibration Phantom to Reduce Variability in Calcium Quantitation, Radiology 1995,vol. 196, No. 1, Jul. 1995, pp. 159-165.
One-page abstract of: G.J. Kemerink et al.,Scanner conformity in CT densitometry of the lungs, Radiology,vol. 197, No. 3, Dec. 1995, pp. 749-752.
One-page abstract of: P. Bhattacharya et al.,A new edge detector for gray volumetric data, Comput. Biol. Med.,vol. 26, No. 4, Jul. 1996, pp. 315-328.
One-page abstract of: H.C. Yoon et al.,Coronary artery calcium: alternate methods for accurate and reproducible quantitation, Acad. Radiol.,vol. 4, No. 10, Oct. 1997, pp. 666-673.
One-page abstract of: L.E. Greaser, 3rdet al.,Electron-beam CT: the effect of using a correction function on coronary artery calcium quantitation, Acad. Radiol.,vol. 6, No. 1, Jan. 1999, pp. 40-48.
One-page abstract of: B.C. Stoel et al.,Sources of error in lung densitometry with CT, Invest. Radiol.,vol. 34, No. 4, Apr. 1999, pp. 303-309.
Geoffrey Dougherty et al.,Measurement of thickness and density of thin structures by computed tomography: A simulation study, Medical Physics,vol. 26, No. 7, Jul. 1999, pp. 1341-1348.
Jiang Hsieh et al.,An iterative approach to the beam hardening correction in cone beam CT, Medical Physics,vol 27, No. 1, Jan. 2000, pp. 23-29.
Matthew S. Brown et al.,Knowledge-based segmentation of thoracic computed tomography images for assessment of split lung function, Medical Physics,vol. 27, No. 3, Mar. 2000, pp. 592-598.
Technical Note,Automatic Outlining Technique for EMI Scanner Pictures, Medical&Biological Engineering&Computing,vol. 17, Sep. 1979, pp. 693-694.
Christopher E. Cann et al.,Precise Measurement of Vertebral Mineral Content Using Computed Tomography, Journal of Computer Assisted Tomography,vol. 4, No. 4, Aug. 1980, pp. 493-500.
Christopher E. Cann et al.,Spinal Mineral Loss in Oophorectomized Women, Journal of the Americal Medical Association,vol. 244, No. 18, Nov. 7, 1980, pp. 2056-2059.
James M. Keller et al.,Automatic Outlining of Regions on CT Scans, Journal of Computer Assisted Tomography,vol. 5, No. 2, Apr. 1981, pp. 240-245.
Robert A. Kruger et al.,Dual Energy Film Subtraction Technique for Detecting Calcification in Solitary Pulmonary Nodules, Radiation Physics,vol. 140, Jul. 1981, pp. 213-219.
Christopher E. Cann,Low Dose CT Scanning for Quantitative Spinal Mineral Analysis, Radiology,vol. 140, No. 3, Sep. 1981, pp. 813-815 (page 814 missing for Applicant's copy).
K-P Hermann et al.,Polyethylene-based Water-equivalent Phantom Material for X-ray Dosimetry at Tube Voltages from 10 to 100kV, Phys. Med. Biol.,vol. 30, No. 11, 1985, pp. 1195-1200.
S.J. Zeichner et al.,Quantitative Digital Subtraction Radiography: A Clinical Method for Bone Mineral Determination, Transactions of the Fifth International Workshop on Bone and Soft Tissue Densitometry Using Computed Tomogragphy,The University of Pennsylvania, Oct. 14-18, 1985, one page.
S. Serpico et al.,Evaluation and Standardization in Bone Densitometry, Transactions of the Fifth International Workshop on Bone and Soft Tissue Densitometry Using Computed Tomography,The University of Pennsylvania, Oct. 14-18, 1985, p. 75.
D.J. Hawkes et al.,Development of a Digital Radiographic Technique to Measure Bone Mineral in Neonates, Transactions of the Fifth International Workshop on Bone and Soft Tissue Densitometry Using Computed Tomography,The University of Pennsylvania, Oct. 14-18, 1985, p. 76.
R.E. Baldy et al.,A Fully-Automated Computer Assisted Method of CT Brain Scan Analysis for the Measurement of Cerbrospinal Fluid Spaces and Brain Absorption Density, Neuroradiology,vol. 28, 1986, pp. 109-117.
K-P Hermann et al.,Muscle-and Fat-equivalent Polyethylene-based Phantom Materials for X-ray Dosimetry At Tube Voltages Below 100 kV, Phys. Med. Biol.,vol. 31, No. 9, 1986, pp. 1041-1046.
Marketing Materials from General Electric distributed in 1987, four pages.
John Max Vogel,Application Principles and Technical Consideration in SPA, Proceedings Osteoporosis Update,Harry Jerant ed., Radiology Research and Education Foundation, University of California, 1987, pp. 219-231.
Willi A. Kalender et al.,Vertebral Bone Mineral Analysis: An Integrated Approach with CT, Radiology,1987, vol. 164, No. 2, Aug. 1987. pp. 419-423.
W.A. Kalender et al.,Methodologica
Knobbe Martens Olson & Bear LLP
Patel Kanjibhai
Tabatabai Abolfazl
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