Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1992-10-09
1994-12-27
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
36441324, 250369, G01T 1166
Patent
active
053767950
ABSTRACT:
Radionuclide emission imaging is improved by correcting emission-transmission data for attenuation along calculated path lengths and through calculated basis material. X-ray transmission data are used to develop an attenuation map through an object which is then used in reconstructing an image based on emission data, Radiation detection circuitry is provided which has different operating modes in detecting the x-ray and emission photons passing through the object. An iterative process is used to reconstruct the radionuclide distribution using the radionuclide projection data and the attenuation map based on physical characteristics of the object being imaged. Subsets of the complete radionuclide projection data are used to reconstruct image subsets of the radionuclide distribution. The image subsets can be generated concurrently with the acquisition of the radionuclide projection data or following acquisition of all data.
REFERENCES:
patent: 3914607 (1975-10-01), Cho et al.
patent: 4029963 (1977-06-01), Alvarez et al.
patent: 4578803 (1986-03-01), Macovski
patent: 4633398 (1986-12-01), Gullberg et al.
patent: 5210421 (1993-05-01), Gullberg et al.
J. S. Fleming, "A Technique for Using CT Images in Attenuation Correction and Quantification in SPECT," Nuclear Medicine Communications 10, pp. 83-97, 1989.
Park, "use of Simultaneous Transmission-Emission Scanning in the Diagnosis of Pericardial Effusion," J. Nucl. Med. (USA), 13 (6), Jun. 1972, pp. 347-348.
Peppler, "Combined Transmission-Emission Scanning Using Dual-Photon Absorptiometry," Ph.D. Thesis, Univ. Wisconsin, 1981.
Kuhl, "Transmission Scanning: A Useful Adjunct to Conventional Emission Scanning for Accurately Keying Isotope Deposition to Radiographic Anatomy," Transmission Scanning, vol. 87, pp. 278-284, Aug. 1966.
Briggs, "Combined Emission-Transmission Scanning of the Skeleton," Work in Progress, vol. 90, pp. 348-350, Feb. 1968.
Cohn, "A Whole-Body Counter with an Invariant Response to Radionuclide Distribution and Body Size," Phys. Med. Biol., 1969, vol. 14, No. 4, pp. 645-658.
Tothill, "Quantitative Profile Scanning for the Measurement of Organ Radioactivity," Phys. Med. Biol., 1971, vol. 16, No. 4, pp. 625-626.
Acts of 1972 Scientific Program: Technologists' Scientific Sessions Presented at 19th Annual SNM Meeting, Abstracts: Presented Orally, "Combined Transmission-Emission Scanning in Chest Disease," by Alfieri, vol. 13, No. 11, and Transmission Scanning as an Aid to the Interpretation of Routine Emission Scans, by Westerman, vol. 10, No. 6.
Suzuki, "Whole Body Transmission-Emission Scanning with Whole Body Camera," Whole Body Transmission-Emission Scanning, vol. 125, No. 4, pp. 978-980, Dec. 1975.
Nalcioglu, "Dual Energy Attenuation Correction for Single Photon Emission Computed Tomograph (SPECT)," IEEE Transactions on Nuclear Science, vol. NS-31, No. 1, Feb. 1984.
Bailey, "Improved SPECT Using Simultaneous Emission and Transmission Tomography," Jrnl. of Nuclear Med., vol. 28, No. 5, pp. 844-851, May 1987.
Murase, "A Comparative Study of Attenutation Correction Algorithms in Single Photon Emission Computed Tomography (SPECT)," Euro. Jrnl. of Nuclear Med., vol. 13, pp. 55-62, 1987.
SCAN Diagnostic Imaging, The Business Biweekly of Medical Imaging, vol. 2, No. 18, Sep. 28, 1988, pp. 7-8.
Levin, "Retrospective Geometric Correlation of MR, CT, and PET Images," Radiology, vol. 169, No. 3, pp. 817-823, 1988.
Thompson, "Simultaneous Transmission and Emission Scans in Positron Tomography," Presented at the IEEE Nuclear Science Symposium, Orlando, Fla., Nov. 9, 1988, Submitted to the IEEE Transactions on Nuclear Science, Feb. 1989.
Park, "Use of Simultaneous Transmission-Emission Scanning in the Diagnosis of Pericardial Effusion," Jrnl. of Nuclear Med., vol. 13, No. 6, pp. 347-348.
Product Literature-Imagine, 4 pages, M & SE Polyscan, Medical and Scientific Enterprises, Inc., Sudbury, Mass., undated.
Manglos, "Imaging of the Human Torso Using Cone-Beam Transmission CT Implemented on a Rotating Gamma Camera," Jrnl. of Nuclear Med., vol. 33, No. 1, Jan. 1992, pp. 150-156.
Stonestrom, "A Framework for Spectral Artifact Corrections in X-Ray CT," IEEE Trans. on Biomedical Engineering, vol. BME-28, No. 2 (ISSN 0018-9294), Feb. 1991, pp. 128-141.
Cann, "Precise Measurement of Vertebral Mineral Content Using Computed Tomography," Jrnl. of Computer Assisted Tomography, vol. 4, No. 4, pp. 493-500, Aug. 1980.
Tsui, "Correction of Nonuniform Attenuation in Cardiac SPECT Imaging," Jrnl. of Nuclear Med., vol. 30, No. 4, Apr. 1989, pp. 497-507.
Huizenga, "The Use of Computed Tomography Numbers in Dose Calculations for Radiation Therapy," Acta Radiologia Oncology 24 (1985) Fasc. 6, pp. 509-519.
Brown J. Keenan
Cann Christopher E.
Gould Robert G.
Hasegawa Bruce H.
Heanue Joseph A.
Fields Carolyn E.
Regents of the University of California
LandOfFree
Emission-transmission imaging system using single energy and dua does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Emission-transmission imaging system using single energy and dua, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Emission-transmission imaging system using single energy and dua will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-920799