Method and apparatus for enhanced sensitivity filmless medical x-ray imaging, including three-dimensional imaging

Title: Method and apparatus for enhanced sensitivity filmless medical x-ray imaging, including three-dimensional imaging

Full Record
Similar

A filmless X-ray imaging system includes at least one X-ray source, upper and lower collimators, and a solid-state detector array, and can provide three-dimensional imaging capability. The X-ray source plane is distance z{sub 1} above upper collimator plane, distance z{sub 2} above the lower collimator plane, and distance z{sub 3} above the plane of the detector array. The object to be X-rayed is located between the upper and lower collimator planes. The upper and lower collimators and the detector array are moved horizontally with scanning velocities v{sub 1}, v{sub 2}, v{sub 3} proportional to z{sub 1}, z{sub 2} and z{sub 3}, respectively. The pattern and size of openings in the collimators, and between detector positions is proportional such that similar triangles are always defined relative to the location of the X-ray source. X-rays that pass through openings in the upper collimator will always pass through corresponding and similar openings in the lower collimator, and thence to a corresponding detector in the underlying detector array. Substantially 100% of the X-rays irradiating the object (and neither absorbed nor scattered) pass through the lower collimator openings and are detected, which promotes enhanced sensitivity. A computer system coordinates repositioning of the collimators and detectormore »

Inventors:: Parker, S.

Issue Date:: 1995-10-24

OSTI Identifier:: 119050

Assignee:: Univ. of Hawaii, Honolulu, HI (United States) OAK; SCA: 550602; PA: EDB-95:151178; SN: 95001477065

Patent Number(s):: US 5,461,653/A/

Application Number:: PAN: 8-147,401

Contract Number:: AC03-83ER40103

Resource Relation:: Other Information: PBD: 24 Oct 1995

Research Org:: University of Hawaii

Country of Publication:: United States

Language:: English

Subject:: 55 BIOLOGY AND MEDICINE, BASIC STUDIES; BIOMEDICAL RADIOGRAPHY; X-RAY EQUIPMENT; DESIGN; RADIATION DETECTORS; POSITIONING; X-RAY DETECTION; COMPUTERIZED CONTROL SYSTEMS; REAL TIME SYSTEMS

Full Text
Patents / Patent Applications
Search for the full text at the U.S. Patent and Trademark Office

Similar records in DOepatents and OSTI.GOV collections:

Method and apparatus for enhanced sensitivity filmless medical x-ray imaging, including three-dimensional imaging

Patent Parker, Sherwood

A filmless X-ray imaging system includes at least one X-ray source, upper and lower collimators, and a solid-state detector array, and can provide three-dimensional imaging capability. The X-ray source plane is distance z.sub.1 above upper collimator plane, distance z.sub.2 above the lower collimator plane, and distance z.sub.3 above the plane of the detector array. The object to be X-rayed is located between the upper and lower collimator planes. The upper and lower collimators and the detector array are moved horizontally with scanning velocities v.sub.1, v.sub.2, v.sub.3 proportional to z.sub.1, z.sub.2 and z.sub.3, respectively. The pattern and size of openings inmore »« less
Full Text Available January 1995
Fiber fed x-ray/gamma ray imaging apparatus

Patent Hailey, C.J. ; Ziock, K.P.

X-ray/gamma ray imaging apparatus is disclosed for detecting the position, energy, and intensity of x-ray/gamma ray radiation comprising scintillation means disposed in the path of such radiation and capable of generating photons in response to such radiation; first photodetection means optically bonded to the scintillation means and capable of generating an electrical signal indicative of the intensity, and energy of the radiation detected by the scintillation means; second photodetection means capable of generating an electrical signal indicative of the position of the radiation in the radiation pattern; and means for optically coupling the scintillation means to the second photodetection means.more »« less
June 1992
Fiber fed x-ray/gamma ray imaging apparatus

Patent Application - in OSTI.gov collection Hailey, C.J. ; Ziock, K.P.

X-ray/gamma ray imaging apparatus is disclosed for detecting the position, energy, and intensity of x-ray/gamma ray radiation comprising scintillation means disposed in the path of such radiation and capable of generating photons in response to such radiation; first photodetection means optically bonded to the scintillation means and capable of generating an electrical signal indicative of the intensity, and energy of the radiation detected by the scintillation means; second photodetection means capable of generating an electrical signal indicative of the position of the radiation in the radiation pattern; and means for optically coupling the scintillation means to the second photodetection means.more »« less
August 1990
Fiber fed x-ray/gamma ray imaging apparatus

Patent Application - in OSTI.gov collection Hailey, C.J. ; Ziock, K.P.

X-ray/gamma ray imaging apparatus is disclosed for detecting the position, energy, and intensity of x-ray/gamma ray radiation comprising scintillation means disposed in the path of such radiation and capable of generating photons in response to such radiation; first photodetection means optically bonded to the scintillation means and capable of generating an electrical signal indicative of the intensity, and energy of the radiation detected by the scintillation means; second photodetection means capable of generating an electrical signal indicative of the position of the radiation in the radiation pattern; and means for optically coupling the scintillation means to the second photodetection means.more »« less
August 1990
Method and apparatus for producing sharp chromatic x-ray images of x-ray emitting objects

Patent Application - in OSTI.gov collection Thoe, R.S.

Method and apparatus for producing sharp, chromatic, magnified images of X-ray emitting objects, are provided. The apparatus, which constitutes an X-ray microscope or telescope, comprises a connected collection of Bragg reflecting planes, comprised of either a bent crystal or a synthetic multilayer structure, disposed on and adjacent to a locus determined by a spherical surface. The individual Bragg planes are spatially oriented to Bragg reflect radiation from the object location toward the image location. This is accomplished by making the Bragg planes spatially coincident with the surfaces of either a nested series of prolate ellipsoids of revolution, or a nestedmore »« less
January 1990