X-ray or gamma ray systems or devices – Specific application – Computerized tomography
Reexamination Certificate
2005-12-07
2009-02-17
Song, Hoon (Department: 2882)
X-ray or gamma ray systems or devices
Specific application
Computerized tomography
C378S004000, C378S901000, C378S019000
Reexamination Certificate
active
07492856
ABSTRACT:
An apparatus and method for providing a projection image directly from data acquired by a CT scanner, the method comprising: acquiring an amount of data corresponding to an entire object that is scanned by the CT scanner, wherein the amount of data is generated by an x-ray source that projects a fan beam of x-rays toward a detector array on an opposite side of a gantry of the CT scanner as the object is passed through an opening in the gantry; selecting an imaging plane, the imaging plane corresponding to a view of the object; dividing the imaging plane into a plurality of rows and columns, thus creating a grid of points corresponding to the imaging plane; determining, for each point in the grid, a data point from the acquired data corresponding to an x-ray source position wherein a ray from the x-ray source to the grid point is closest to a perpendicular orientation with respect to the imaging plane, and a detector position where the ray intersects the detector array; and presenting a projection image corresponding to the selected imaging plane, wherein the projection image comprises a plurality of projection points and each projection point in the projection image is a converted value of the data points of the data points of the acquired data.
REFERENCES:
patent: 5182764 (1993-01-01), Peschmann et al.
patent: 5233518 (1993-08-01), King et al.
patent: 5367552 (1994-11-01), Peschmann
patent: 5668846 (1997-09-01), Fox et al.
patent: 5708690 (1998-01-01), Hsieh
patent: 5796803 (1998-08-01), Flohr et al.
patent: 5946371 (1999-08-01), Lai
patent: 5960056 (1999-09-01), Lai
patent: 6038278 (2000-03-01), Hsieh et al.
patent: 6108575 (2000-08-01), Besson
patent: 6229869 (2001-05-01), Hu
patent: 6459756 (2002-10-01), Tam et al.
patent: 6647084 (2003-11-01), Hsieh
patent: 2004/0131140 (2004-07-01), Bruder et al.
patent: 198 32 276 (2000-01-01), None
patent: 0 428 348 (1990-11-01), None
patent: 0 969 414 (2000-01-01), None
patent: 1 396 820 (2004-03-01), None
patent: 5-23329 (1993-02-01), None
patent: 6-38959 (1994-02-01), None
patent: 2003-164444 (2003-06-01), None
patent: WO 99/01067 (1999-01-01), None
“Total Effective Radiation Dose from Spiral CT and Conventional Radiography of the Pelvis with Regard to Fracture Classification” by A.G. Lurik, L. C. Jensen and J. Hansen, Acro Radiologica 37 (1996) pp. 651-654 and 2 pgs of Figures.
“Storing Medical Images on High Density Digital Tape Recorders” by Gerald J. Wade, SPIE vol. 416, Picture Archiving & Communication Systems (PACS II) for Medical Application (1983), pp. 36-41.
Minimum Detection Windows, PI-line Existence and Uniqueness for Helical Cone-Beam Scanning of Variable Pitch, 2004 American Associate of Physicists in Medicine, Med. Phys. 31 (3), Mar. 2004, pp. 566-572.
Garms Walter I.
Girolamo Ugo Di
Merzbacher Matthew
Armstrong Teasdale LLP
GE Security Inc.
Hyun, Esq. Eugene
Song Hoon
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