X-ray or gamma ray systems or devices – Specific application – Tomography
Patent
1995-04-11
1996-12-10
Porta, David P.
X-ray or gamma ray systems or devices
Specific application
Tomography
378 57, 378 62, G01N 2300
Patent
active
055839045
ABSTRACT:
An improved laminography system that allows generation of high speed and high resolution X-ray laminographs by using a continuous scan method with two or more linear detectors and one or more collimated X-ray sources. Discrete X-ray images, with different viewing angles, are generated by each detector. The discrete X-ray images are then combined by a computer to generate laminographic images of different planes in the object under test, or analyzed in such a manner to derive useful data about the object under test. In one embodiment, the improved scanning laminography system does not require any motion of the source or detectors, but simply a coordinated linear motion of the object under test. Higher speed is achieved over conventional laminography systems due to the continuous nature of the scan, and due to the ability to generate any plane of data in the object under test without having to re image the object.
REFERENCES:
patent: 2292859 (1942-08-01), Allibone
patent: 2319350 (1943-05-01), Schiebold
patent: 2511853 (1950-06-01), Kaiser
patent: 2667585 (1954-01-01), Gradstein
patent: 2720596 (1955-10-01), Acker
patent: 2890349 (1959-06-01), Huszar
patent: 2998518 (1961-08-01), Guntert
patent: 3091692 (1963-05-01), Verse
patent: 3149257 (1964-09-01), Wintermute
patent: 3499146 (1970-03-01), Richards
patent: 3742229 (1973-06-01), Smith et al.
patent: 3780291 (1973-12-01), Stein et al.
patent: 3812288 (1974-05-01), Walsh et al.
patent: 3818220 (1974-06-01), Richards
patent: 3832546 (1974-08-01), Morsell et al.
patent: 3843225 (1974-10-01), Kock et al.
patent: 3894234 (1975-07-01), Mauch et al.
patent: 3928769 (1975-12-01), Smith
patent: 3962579 (1976-06-01), Winnek
patent: 3984684 (1976-10-01), Winnek
patent: 4002917 (1977-01-01), Mayo
patent: 4007375 (1977-02-01), Albert
patent: 4032785 (1977-06-01), Green et al.
patent: 4075489 (1978-02-01), Neal et al.
patent: 4107563 (1978-08-01), Oddell
patent: 4130759 (1978-12-01), Haimson
patent: 4139776 (1979-02-01), Hellstrom
patent: 4147933 (1979-04-01), Rougeot et al.
patent: 4179100 (1979-12-01), Sashin et al.
patent: 4211927 (1980-07-01), Hellstrom et al.
patent: 4228353 (1980-10-01), Johnson
patent: 4234792 (1980-11-01), DeCou et al.
patent: 4260898 (1981-04-01), Annis
patent: 4287425 (1981-09-01), Elliot, Jr.
patent: 4340816 (1982-07-01), Schott
patent: 4349740 (1982-09-01), Grassmann et al.
patent: 4352021 (1982-09-01), Boyd et al.
patent: 4385434 (1983-05-01), Zehnpfennig et al.
patent: 4392235 (1983-07-01), Houston
patent: 4400620 (1983-08-01), Blum
patent: 4411012 (1983-10-01), Pfeiler et al.
patent: 4414682 (1983-11-01), Annis et al.
patent: 4415980 (1983-11-01), Buchanan
patent: 4426722 (1984-01-01), Fujimura
patent: 4472824 (1984-09-01), Buckley
patent: 4481664 (1984-11-01), Linger et al.
patent: 4491956 (1985-01-01), Winnek
patent: 4516252 (1985-05-01), Linde et al.
patent: 4521902 (1985-06-01), Peugeot
patent: 4561104 (1985-12-01), Martin
patent: 4575751 (1986-03-01), Duschl
patent: 4618970 (1986-10-01), Rand et al.
patent: 4628531 (1986-12-01), Okamoto et al.
patent: 4677473 (1987-06-01), Okamoto et al.
patent: 4688241 (1987-08-01), Peugeot
patent: 4688939 (1987-08-01), Ray
patent: 4718075 (1988-01-01), Horn
patent: 4720633 (1988-01-01), Nelson
patent: 4724320 (1988-02-01), Ino et al.
patent: 4730350 (1988-03-01), Albert
patent: 4731855 (1988-03-01), Suda et al.
patent: 4769546 (1988-09-01), Kniffler et al.
patent: 4803639 (1989-02-01), Steele et al.
patent: 4809308 (1989-02-01), Adams et al.
patent: 4852131 (1989-07-01), Armistead
patent: 4926452 (1990-05-01), Baker et al.
patent: 4955045 (1990-09-01), Friede et al.
patent: 4977328 (1990-12-01), Van Vucht
patent: 5012498 (1991-04-01), Cuzin et al.
patent: 5020086 (1991-05-01), Peugeot
patent: 5081656 (1992-01-01), Baker et al.
patent: 5097492 (1992-03-01), Baker et al.
patent: 5199054 (1993-03-01), Adams et al.
patent: 5259012 (1993-11-01), Baker et al.
patent: 5291535 (1994-03-01), Baker et al.
Hasenkamp, "Radiographic Laminography," Materials Evaluation, Aug. 1974, pp. 169-180.
Moler, "Development of a Continuous Scanning Laminograph," Final Report No. IITRI V6034-24, Oct. 1968.
Blanche, "Nondestructive Testing Techniques for Multilayer Printed Wiring Boards," Nondestructive Testing: Trends and Techniques, NASA SP-5082, Oct. 1968, pp. 1-13.
Hamre, "Nondestructive Testing Techniques for Muitilayer Printed Wiring Boards," Report No. IITRI-E6024-15, Sep. 1965.
Kruger et al., "Industrial Applications of Computed Tomography at Los Alamos Scientific Labratory," LA-8412-MS, Jun. 1980.
Stanley et al., "A New NDE Capability for Thin-Shelled Structures," AFWAL-TR-84-4120, Materials Lab, Wright Patterson AFB, Sep. 1984.
Deane et al., IRT Corp., "Using X-Ray Vision to Verify SMD-Board Quality," Electronics Test, Feb. 1987, pp. 32-35.
Soron, IRT Corp., "X-Ray Inspection Meets Increased PWB Throughput", Density Challenge14 Part 1, Electronics, Oct. 1987, pp. 36-37.
Pound, "Image Processing Boosts the Power of Non-destructive Testing," Electronic Packaging and Production, Jun. 1985.
Casey, "X-Ray Inspection," Manufacturing Systems, Jul. 1987, p. 18ff.
Corey, IRT Corp., "Artificial Perception Gives Super Vision," Research and Development, Oct. 1984.
LaClair, "Nondestructive Measurement and Inspection Process," IBM Technical Disclosure Bulletin, vol. 18, No. 12, May 1976.
Hufault et al., "Lead-Indium Solder Joint Analysis," IBM Technical Disclosure Bulletin, vol. 19, No. 11, Apr. 1977.
Wittenberg, "IRT Improves SMT X-Ray Inspection System," Electronic Engineering Times, Oct. 5, 1987, p. 53.
Phelps, Christi, "Four Pi Captures Contact, Capital; Unveils Product," San Diego Business Journal, Week of Oct. 10-16, 1988.
Smith, Steven W. and Kruger, Robert A., "Fast Circular Tomography Device for Cardiac Imaging: Image Deflection Mechanism and Evaluation", IEEE Transactions on Medical Imaging, vol. MI-6, No. 2, Jun. 1987.
Four Pi Systems product brochure for "3 DX Series 2000 Automated Inspection System", Copyright 1988.
Juha, Mike, "Automated Inspection of Surface Mounted Device Solder Connections", Proceedings of Soldering Technology Seminar--19-20 Feb. 1985, Naval Weapons Center, China Lake, CA, Publication NWC TS 85-25, pp. 73-90.
Smith, Charles R. and Erker, Joseph W., "Low cost, high resolution x-ray detector system for digital radiography and computed tomography", SPIE vol. 2009 X-Ray Detector Physics and Applications II, 1993 pp. 31-35.
D. Meyer-Ebrecht and H. Weiss, "Tomosynthesis--3-D X-ray imaging by means of holography or electronics", OPTICA ACTA, vol. 24, No. 4, 1977, pp. 293-303.
Kolitsi et al., "A multiple projection method for digital tomosynthesis", Med. Phys., vol. 19, No. 4, Jul./Aug. 1992, pp. 1045-1050.
Haaker et al., "Digital angiographic tomosynthesis with fewer artifacts", Med. Phys., vol. 12, No. 4, Jul./Aug. 1985, pp. 431-436.
Kruger et al., "Reconstruction of blood vessels from x-ray subtraction projections: Limited angle geometry", Med. Phys., vol. 14, No. 6, Nov./Dec. 1987, pp. 940-948.
Baranov et al., "System of Digital Tomosyntheis for Nondestructive Testing", Plenum Publishing Corporation 0038-5492/88/2405, 1989, pp. 321-327.
Vainberg et al., "Reconstruction of the Internal Three-Dimensional Structure of Objects Based on Real-Time Integral Projections", Plenum Publishing Corporation 0038-5492/81/1706, 1982, pp. 415-423.
Hewlett-Packard Co.
Porta David P.
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