Image analysis – Applications – Biomedical applications
Reexamination Certificate
2005-07-12
2005-07-12
Werner, Brian (Department: 2621)
Image analysis
Applications
Biomedical applications
C378S098110, C378S098120, C378S053000
Reexamination Certificate
active
06917697
ABSTRACT:
A method is provided to automatically determine a structure cancelled image in a dual energy decomposition system. A high energy and a low energy level image of internal anatomy formed of at least first and second types of structure are acquired. A characteristic mask is computed using a gradient mask and a localization mask. A first cancellation parameter is evaluated against the characteristic mask, and a second cancellation parameter is computed based upon the first cancellation parameter. The first or second cancellation parameter is selected from a range in a look-up table determined by an effective kVp used to acquire the high level image and an effective kVp used to acquire the low level image. An image of soft structure and an image of hard structure are obtained from the first and second energy level images according to a cancellation equation using the first and second cancellation parameters.
REFERENCES:
patent: 4355331 (1982-10-01), Georges et al.
patent: 4499493 (1985-02-01), Nishimura
patent: 4792900 (1988-12-01), Sones et al.
patent: 5301107 (1994-04-01), Shimura
patent: 5402338 (1995-03-01), Ito
patent: 5838758 (1998-11-01), Krug et al.
patent: 6173034 (2001-01-01), Chao
patent: 6205348 (2001-03-01), Giger et al.
patent: 6343111 (2002-01-01), Avinash et al.
patent: 6597759 (2003-07-01), Mazess et al.
“Active Dual Energy X-Ray Detector: Experimental Characterization”, Alvarez et al., Medical Imaging 1997: Physics of Medical Imaging, May 12, 1997, p. 419-426.
“Experimental Comparison of Dual Energy X-ray Detectors”, Alvarez et al., Medical Imaging 1996: Physics of Medical Imaging, May 7, 1996, p. 534-543.
“Generalized Image Combinations in Dual KVP Digital Radiography”, Lehmann et al., Medical Physics, vol. 8, No. 5, Sep./Oct. 1981, p. 659-667.
“Single-Exposure Dual-Energy Computed Radiography”, Stewart et al., Medical Physics, vol. 17, No. 5, Sep./Oct. 1990, p. 866-875.
Avinash Gopal B.
Nicolas Francois Serge
Sabol John Michael
Dellapenna Michael A.
GE Medical Systems Global Technology Company LLC
McAndrews Held & Malloy Ltd.
Patel Shefali
Vogel Peter I.
LandOfFree
Method and apparatus to automatically determine tissue... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus to automatically determine tissue..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus to automatically determine tissue... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3432854