Dual energy radiation scanning of contents of an object

Details Dual energy radiation scanning of contents of an object Dual energy radiation scanning of contents of an object

2007-08-14

2007-08-14

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Absorption

C378S057000, C378S098900

Reexamination Certificate

active

11070143

ABSTRACT:
In one embodiment, a method of examining contents of an object is disclosed comprising scanning an object at first and second radiation energies, detecting radiation at the first and second energies, and calculating a function of the radiation detected at the first and second energies, for corresponding pixels. A pixel is a projection of radiation through the object onto the detector. The first functions of a plurality of pixels are grouped and a second function of the group is analyzed to determine whether the object at least potentially contains material having an atomic number greater than the predetermined atomic number. The second function may be compared to a third function, which may be a threshold having a value based, at least in part, on material having a predetermined atomic number. Systems are also disclosed.

REFERENCES:
patent: 3018374 (1962-01-01), Pritchett
patent: 3636353 (1972-01-01), Untermyer
patent: 3924132 (1975-12-01), Koslow
patent: 4229654 (1980-10-01), Arya et al.
patent: 4251726 (1981-02-01), Alvarez
patent: 4382208 (1983-05-01), Meddaugh et al.
patent: 4400650 (1983-08-01), Giebeler, Jr.
patent: 4511799 (1985-04-01), Bjorkholm et al.
patent: 4540882 (1985-09-01), Vinegar et al.
patent: 4671256 (1987-06-01), Lemelson
patent: 5065418 (1991-11-01), Bermbach et al.
patent: 5098640 (1992-03-01), Gozani et al.
patent: 5319547 (1994-06-01), Krug et al.
patent: 5410156 (1995-04-01), Miller
patent: 5490218 (1996-02-01), Krug et al.
patent: 5495106 (1996-02-01), Mastny
patent: 5524133 (1996-06-01), Neale et al.
patent: 5557108 (1996-09-01), Tumer
patent: 5600303 (1997-02-01), Husseiny et al.
patent: 5600700 (1997-02-01), Krug et al.
patent: 5611502 (1997-03-01), Edlin et al.
patent: 5682411 (1997-10-01), Rushbrooke et al.
patent: 5692028 (1997-11-01), Geus et al.
patent: 5696806 (1997-12-01), Grodzins et al.
patent: 5729582 (1998-03-01), Ham et al.
patent: 5838758 (1998-11-01), Krug et al.
patent: 5838759 (1998-11-01), Armistead
patent: 5841832 (1998-11-01), Mazess et al.
patent: 5905806 (1999-05-01), Eberhard et al.
patent: 5917880 (1999-06-01), Bjorkholm
patent: 5930314 (1999-07-01), Lanza
patent: 6018562 (2000-01-01), Willson
patent: 6078642 (2000-06-01), Simanovsky et al.
patent: 6088423 (2000-07-01), Krug et al.
patent: 6151381 (2000-11-01), Grodzins et al.
patent: 6195444 (2001-02-01), Simanovsky et al.
patent: 6236709 (2001-05-01), Perry et al.
patent: 6301326 (2001-10-01), Bjorkholm et al.
patent: 6347132 (2002-02-01), Annis
patent: 6366021 (2002-04-01), Meddaugh et al.
patent: 6411674 (2002-06-01), Oikawa
patent: 6438201 (2002-08-01), Mazess et al.
patent: 6567496 (2003-05-01), Sychev
patent: 6584170 (2003-06-01), Aust et al.
patent: 6936820 (2005-08-01), Peoples
patent: 6944264 (2005-09-01), Bijjani et al.
patent: 7023957 (2006-04-01), Bijjani et al.
patent: 7045788 (2006-05-01), Iwatschenko-Borho et al.
patent: 7103137 (2006-09-01), Seppi et al.
patent: 7130371 (2006-10-01), Elyan et al.
patent: 2003/0190011 (2003-10-01), Beneke et al.
patent: 2004/0256565 (2004-12-01), Adams et al.
S. Ogorodnikov, V. Petrunin, ‘Processing of interlaced images in 4-10 MeV dual energy customs system for material recognition’, Physical Review Special Topics—Accelerators and Beams, 2002, vol. 5, The American Physical Society, College Park, MD.
Paul Bjorkholm, Dual Energy Radiation Scanning Of Objects, U.S. Appl. No. 11/070,030, Filing Date Feb. 28, 2005.
Clayton et al., Object Examination By Delayed Neutrons, U.S. Appl. No. 11/070,032, Filing Date Feb. 28, 2005.

Affiliated with

Also associated with

Rating

Dual energy radiation scanning of contents of an object does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual energy radiation scanning of contents of an object, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual energy radiation scanning of contents of an object will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3838391