Image analysis – Applications – Biomedical applications
Reexamination Certificate
2011-05-31
2011-05-31
Ahmed, Samir A (Department: 2624)
Image analysis
Applications
Biomedical applications
C378S004000, C378S098110
Reexamination Certificate
active
07953263
ABSTRACT:
An X-ray CT apparatus includes a unit which extracts a high-contrast region of comparatively high X-ray attenuation coefficient from an image, units which generate an unsharp image concerning the high-contrast region, on the basis of the position of the extracted high-contrast region and a point spread function peculiar to the apparatus, and a unit which subtracts the unsharp image from the original image in order to generate a low-contrast image concerning a low-contrast region of comparatively low X-ray attenuation coefficient.
REFERENCES:
patent: 6266388 (2001-07-01), Hsieh
patent: 6920238 (2005-07-01), Chen et al.
patent: 6922462 (2005-07-01), Acharya et al.
patent: 7236618 (2007-06-01), Chui et al.
patent: 7783096 (2010-08-01), Chen et al.
patent: 2004/0022359 (2004-02-01), Acharya et al.
patent: 2007/0286330 (2007-12-01), Boing et al.
patent: 1547161 (2004-11-01), None
patent: 10-40372 (1998-02-01), None
patent: 2001-137228 (2001-05-01), None
patent: 2001-190550 (2001-07-01), None
patent: 2004-65975 (2004-03-01), None
patent: 2004-174218 (2004-06-01), None
Translation for application JP 2000-003651 filed on Dec. 1, 2000, publication 2001-190550, Arai Yoshinori< Suzuki Masakazi, Univ. Nihon. pp. 1-15.
Marcel Van Straten, et al., “Removal of arterial wall calcifications in CT angiography by local subtraction”, Medical Physics, vol. 30, No. 5, XP012012060, May 1, 2003, pp. 761-770.
Jiang Hsieh, “A Practical Cone Beam Artifact Correction Algorithm”, IEEE Nuclear Science Symposium Conference Record 2000 Lyon, France, vol. 2, XP010557010, Oct. 15, 2000, pp. 15-71-15-74.
Marcel Van Straten, et al., “Removal of bone in CT angiography of the cervical arteries by piecewise matched mask bone elimination”, Medical Physics, vol. 31, No. 10, XP012075063, Oct. 1, 2004, pp. 2924-2933.
Abdalmajeid M. Alyassin, et al., “Semi-automatic bone removal technique from CT angiography data”, Proceedings of SPIE, vol. 4322, XP002335330, Jan. 1, 2001, pp. 1273-1283.
Muhammad Bilal Ahmad, et al., “Local Threshold and Boolean Function Based Edge Detection”, IEEE Transactions on Consumer Electronics, IEEE Service Center, New York, NY, US, vol. 45, No. 3, XP011083788, Aug. 1, 1999, pp. 674-679.
Øivind Due Trier, et al., “Evaluation of Binarization Methods for Utility Map Images”, IEEE Proceedings of the International Conference on Image Procesing (ICIP) Austin, vol. 2, Nov. 13, 1994, pp. 1046-1050.
Nakanishi Satoru
Okamoto Yosuke
Ahmed Samir A
Kabushiki Kaisha Toshiba
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Rashidian Mehdi
Toshiba Medical Systems Corporation
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