WO1994023458A3 - X-ray detector for a low dosage scanning beam digital x-ray imaging system - Google Patents

X-ray detector for a low dosage scanning beam digital x-ray imaging system Download PDF

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Publication number
WO1994023458A3
WO1994023458A3 PCT/US1994/003737 US9403737W WO9423458A3 WO 1994023458 A3 WO1994023458 A3 WO 1994023458A3 US 9403737 W US9403737 W US 9403737W WO 9423458 A3 WO9423458 A3 WO 9423458A3
Authority
WO
WIPO (PCT)
Prior art keywords
ray
imaging system
collimating element
scanning beam
detector array
Prior art date
Application number
PCT/US1994/003737
Other languages
French (fr)
Other versions
WO1994023458A2 (en
Inventor
Jack Wilson Moorman
Brian Skillicorn
Peter Joseph Fiekowsky
John William Di Wilent
Original Assignee
Wilent Virginia & Hf
Cardiac Mariners Inc
Jack Wilson Moorman
Brian Skillicorn
Peter Joseph Fiekowsky
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wilent Virginia & Hf, Cardiac Mariners Inc, Jack Wilson Moorman, Brian Skillicorn, Peter Joseph Fiekowsky filed Critical Wilent Virginia & Hf
Priority to AU67006/94A priority Critical patent/AU6700694A/en
Priority to EP94927433A priority patent/EP0693225A4/en
Priority to JP52247394A priority patent/JP3569526B2/en
Publication of WO1994023458A2 publication Critical patent/WO1994023458A2/en
Publication of WO1994023458A3 publication Critical patent/WO1994023458A3/en
Priority to US09/152,079 priority patent/US6060713A/en
Priority to US09/227,280 priority patent/US6649914B1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/48—Diagnostic techniques
    • A61B6/482—Diagnostic techniques involving multiple energy imaging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
    • H01J35/153—Spot position control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/06—Diaphragms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/12—Devices for detecting or locating foreign bodies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4021—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
    • A61B6/4028—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot resulting in acquisition of views from substantially different positions, e.g. EBCT
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4208—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
    • A61B6/4241—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector using energy resolving detectors, e.g. photon counting
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/20—Measuring radiation intensity with scintillation detectors
    • G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
    • G01T1/2914—Measurement of spatial distribution of radiation
    • G01T1/2964—Scanners
    • G01T1/2971—Scanners using solid state detectors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/10—Power supply arrangements for feeding the X-ray tube
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/64—Circuit arrangements for X-ray apparatus incorporating image intensifiers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/027—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4035—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis the source being combined with a filter or grating
    • A61B6/4042—K-edge filters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4488—Means for cooling

Abstract

A scanning beam digital x-ray imaging system according to the present invention includes an x-ray tube (10) having an electron beam source (161) and a target anode (50). Circuitry is provided for focussing the beam (164) and scanning the beam (20, 30) across the target anode (50) in a predetermined pattern such as a serpentine scan pattern. A collimating element (90), preferably in the form of a perforated grid containing an array of apertures (140), is interposed between the x-ray source (50) and an object to be x-rayed (80). The apertures (140) are oriented to form x-ray beams (100) converging at a detector array (110) on a plane (270) located a selected distance from the collimating element (90). That distance is selected to allow placing the object to be x-rayed (80) in between the collimating element (90) and the detector array (110). A segmented x-ray detector array (110) containing a rectangular matrix of detector elements (170) is located in the detection plane (270). A focal plane (280) is created which gives optimal resolution at a particular, selectable distance from the x-ray source (50).
PCT/US1994/003737 1993-01-25 1994-04-05 X-ray detector for a low dosage scanning beam digital x-ray imaging system WO1994023458A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU67006/94A AU6700694A (en) 1993-04-05 1994-04-05 X-ray detector for a low dosage scanning beam digital x-ray imaging system
EP94927433A EP0693225A4 (en) 1993-04-05 1994-04-05 X-ray detector for a low dosage scanning beam digital x-ray imaging system
JP52247394A JP3569526B2 (en) 1993-04-05 1994-04-05 X-ray detector for low dose scanning beam type digital X-ray imaging system
US09/152,079 US6060713A (en) 1993-04-05 1998-09-11 X-ray detector
US09/227,280 US6649914B1 (en) 1993-01-25 1999-01-07 Scanning-beam X-ray imaging system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4274293A 1993-04-05 1993-04-05
US08/042,742 1993-04-05

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US845593A Continuation-In-Part 1993-01-25 1993-01-25
US37550195A Continuation 1993-01-25 1995-01-17

Publications (2)

Publication Number Publication Date
WO1994023458A2 WO1994023458A2 (en) 1994-10-13
WO1994023458A3 true WO1994023458A3 (en) 1994-11-10

Family

ID=21923514

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/003737 WO1994023458A2 (en) 1993-01-25 1994-04-05 X-ray detector for a low dosage scanning beam digital x-ray imaging system

Country Status (6)

Country Link
EP (1) EP0693225A4 (en)
JP (3) JP3569526B2 (en)
CN (1) CN1041237C (en)
AU (1) AU6700694A (en)
IL (1) IL109143A (en)
WO (1) WO1994023458A2 (en)

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US6178223B1 (en) 1998-10-06 2001-01-23 Cardiac Mariners, Inc. Image reconstruction method and apparatus
US6198802B1 (en) 1998-10-06 2001-03-06 Cardiac Mariners, Inc. Scanning beam x-ray source and assembly
US6157703A (en) * 1998-10-06 2000-12-05 Cardiac Mariners, Inc. Beam hardening filter for x-ray source
US6181764B1 (en) 1998-10-06 2001-01-30 Cardiac Mariners, Inc. Image reconstruction for wide depth of field images
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Also Published As

Publication number Publication date
IL109143A0 (en) 1994-06-24
JP2003265457A (en) 2003-09-24
EP0693225A4 (en) 1999-06-23
JP4229859B2 (en) 2009-02-25
JPH08508431A (en) 1996-09-10
CN1041237C (en) 1998-12-16
CN1127553A (en) 1996-07-24
WO1994023458A2 (en) 1994-10-13
AU6700694A (en) 1994-10-24
IL109143A (en) 1999-03-12
EP0693225A1 (en) 1996-01-24
JP3569526B2 (en) 2004-09-22
JP2004261605A (en) 2004-09-24

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