FR2861283B1 - METHOD FOR DETERMINING AT LEAST ONE GEOMETRIC CHARACTERISTIC OF AN X-RAY REPERABLE PORTION LOCATED IN A PATIENT EXAMINATION AREA - Google Patents

METHOD FOR DETERMINING AT LEAST ONE GEOMETRIC CHARACTERISTIC OF AN X-RAY REPERABLE PORTION LOCATED IN A PATIENT EXAMINATION AREA

Info

Publication number
FR2861283B1
FR2861283B1 FR0312339A FR0312339A FR2861283B1 FR 2861283 B1 FR2861283 B1 FR 2861283B1 FR 0312339 A FR0312339 A FR 0312339A FR 0312339 A FR0312339 A FR 0312339A FR 2861283 B1 FR2861283 B1 FR 2861283B1
Authority
FR
France
Prior art keywords
ray
locatable
determining
examination area
geometric characteristic
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
FR0312339A
Other languages
French (fr)
Other versions
FR2861283A1 (en
Inventor
Vincent Boudousq
Michel Julier
Pierre Olivier Kotzki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Diagnostic Medical Systems SA
Original Assignee
Diagnostic Medical Systems SA
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 Diagnostic Medical Systems SA filed Critical Diagnostic Medical Systems SA
Priority to FR0312339A priority Critical patent/FR2861283B1/en
Publication of FR2861283A1 publication Critical patent/FR2861283A1/en
Application granted granted Critical
Publication of FR2861283B1 publication Critical patent/FR2861283B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
    • A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
    • A61B6/4441—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure the rigid structure being a C-arm or U-arm
    • 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
    • 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
    • A61B6/4064—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis specially adapted for producing a particular type of beam
    • A61B6/4085—Cone-beams
    • 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
    • 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
    • A61B6/50—Clinical applications
    • A61B6/505—Clinical applications involving diagnosis of bone
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0012—Biomedical image inspection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/60—Analysis of geometric attributes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10116—X-ray image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30004—Biomedical image processing
    • G06T2207/30008—Bone

Abstract

Procédé pour la détermination d'au moins une caractéristique géométrique d'une partie repérable sous rayonnement X, située dans une zone d'examen (3) d'un patient, ceci au moyen d'un dispositif d'examen d'ostéodensitométrie de type dit "Cone Beam Systems" ou CBS, comportant une source de rayons X (1) venant émettre un faisceau conique en direction d'un détecteur plan (5) pour rayons X adapté.Après l'obtention d'un premier cliché de la partie repérable:- on translate l'ensemble source de rayons X (1) détecteur (5) dans une direction perpendiculaire;- on réalise au moins un second cliché de la partie repérable;- on mesure le décalage (t) d'au moins un point de la partie repérable;- on compare l'amplitude (T) de la translation relative, pour en déduire le degré de grandissement; et- on détermine les caractéristiques géométrique de cette partie repérable.Method for determining at least one geometric characteristic of an identifiable part under X-ray, located in an examination area (3) of a patient, by means of a type bone densitometry examination device called "Cone Beam Systems" or CBS, comprising an X-ray source (1) emitting a conical beam towards a plane detector (5) for suitable X-rays. After obtaining a first picture of the part locatable: - the X-ray source assembly (1) detector (5) is translated in a perpendicular direction; - at least one second photograph of the locatable part is taken; - the offset (t) of at least one is measured point of the locatable part; - the amplitude (T) of the relative translation is compared, to deduce the degree of magnification; and the geometric characteristics of this locatable part are determined.

FR0312339A 2003-10-22 2003-10-22 METHOD FOR DETERMINING AT LEAST ONE GEOMETRIC CHARACTERISTIC OF AN X-RAY REPERABLE PORTION LOCATED IN A PATIENT EXAMINATION AREA Expired - Fee Related FR2861283B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0312339A FR2861283B1 (en) 2003-10-22 2003-10-22 METHOD FOR DETERMINING AT LEAST ONE GEOMETRIC CHARACTERISTIC OF AN X-RAY REPERABLE PORTION LOCATED IN A PATIENT EXAMINATION AREA

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0312339A FR2861283B1 (en) 2003-10-22 2003-10-22 METHOD FOR DETERMINING AT LEAST ONE GEOMETRIC CHARACTERISTIC OF AN X-RAY REPERABLE PORTION LOCATED IN A PATIENT EXAMINATION AREA

Publications (2)

Publication Number Publication Date
FR2861283A1 FR2861283A1 (en) 2005-04-29
FR2861283B1 true FR2861283B1 (en) 2006-01-21

Family

ID=34400699

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0312339A Expired - Fee Related FR2861283B1 (en) 2003-10-22 2003-10-22 METHOD FOR DETERMINING AT LEAST ONE GEOMETRIC CHARACTERISTIC OF AN X-RAY REPERABLE PORTION LOCATED IN A PATIENT EXAMINATION AREA

Country Status (1)

Country Link
FR (1) FR2861283B1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784481A (en) * 1996-06-25 1998-07-21 General Electric Company CT cone beam image reconstruction with circle and line scan path
FR2801978B1 (en) * 1999-12-03 2002-06-14 Commissariat Energie Atomique METHOD FOR IMPROVING A RADIOLOGICAL EXAMINATION AND DEVICE FOR CARRYING OUT SAID METHOD
AU2001294697A1 (en) * 2000-09-29 2002-04-08 Analogic Corporation Method of and system for improving the signal to noise characteristics of imagesfrom a digital

Also Published As

Publication number Publication date
FR2861283A1 (en) 2005-04-29

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Effective date: 20120629