FR2426374A1 - Formation d'images radiographiques numeriques en temps reel par soustraction - Google Patents

Formation d'images radiographiques numeriques en temps reel par soustraction

Info

Publication number
FR2426374A1
FR2426374A1 FR7913277A FR7913277A FR2426374A1 FR 2426374 A1 FR2426374 A1 FR 2426374A1 FR 7913277 A FR7913277 A FR 7913277A FR 7913277 A FR7913277 A FR 7913277A FR 2426374 A1 FR2426374 A1 FR 2426374A1
Authority
FR
France
Prior art keywords
video signals
converting
differential
subtraction
formation
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.)
Granted
Application number
FR7913277A
Other languages
English (en)
Other versions
FR2426374B1 (fr
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.)
Wisconsin Alumni Research Foundation
Original Assignee
Wisconsin Alumni Research Foundation
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
Priority claimed from US05/906,631 external-priority patent/US4204226A/en
Priority claimed from US05/960,830 external-priority patent/US4204225A/en
Application filed by Wisconsin Alumni Research Foundation filed Critical Wisconsin Alumni Research Foundation
Publication of FR2426374A1 publication Critical patent/FR2426374A1/fr
Application granted granted Critical
Publication of FR2426374B1 publication Critical patent/FR2426374B1/fr
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/48—Diagnostic techniques
    • A61B6/481—Diagnostic techniques involving the use of contrast agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/504—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of blood vessels, e.g. by angiography
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/30—Transforming light or analogous information into electric information
    • H04N5/32—Transforming X-rays
    • H04N5/3205—Transforming X-rays using subtraction imaging techniques
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Pathology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Public Health (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • General Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Vascular Medicine (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

Ce procédé comprend les étapes consistant à diriger les rayons X vers le sujet pour produire une image radiographique, à convertir les images radiographiques en trames de télévision comprenant des trains de signaux vidéo analogiques, à convertir les signaux vidéo analogiques en signaux vidéo numériques, à produire des signaux vidéo numériques intégrés en intégrant les signaux vidéo numériques pendant un intervalle de temps prédéterminé, correspondant à une série de trames de télévision, à produire des signaux vidéo différentiels en effectuant une soustraction entre les signaux vidéo directs et les signaux vidéo intégrés correspondants, à convertir les signaux vidéo logiques différentiels en images de télévision différentielles visibles représentant les modifications de l'image radiographique. Il peut être appliqué à l'établissement de diagnostics radiographiques de personnes humaines et d'animaux, mais il est particulièrement adapté à la visualisation du système cardio-vasculaire, y compris le coeur et les vaisseaux sanguins présentant un intérêt.
FR7913277A 1978-05-16 1979-05-15 Formation d'images radiographiques numeriques en temps reel par soustraction Expired FR2426374B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US90668678A 1978-05-16 1978-05-16
US05/906,631 US4204226A (en) 1978-05-16 1978-05-16 Real-time digital X-ray time interval difference imaging
US05/960,830 US4204225A (en) 1978-05-16 1978-11-15 Real-time digital X-ray subtraction imaging

Publications (2)

Publication Number Publication Date
FR2426374A1 true FR2426374A1 (fr) 1979-12-14
FR2426374B1 FR2426374B1 (fr) 1986-03-21

Family

ID=27420614

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7913277A Expired FR2426374B1 (fr) 1978-05-16 1979-05-15 Formation d'images radiographiques numeriques en temps reel par soustraction

Country Status (4)

Country Link
DE (1) DE2919425C2 (fr)
FR (1) FR2426374B1 (fr)
GB (1) GB2020945B (fr)
NL (1) NL183628B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498442A1 (fr) * 1981-01-28 1982-07-30 Gen Electric Procede et appareil de radioscopie

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2475387A1 (fr) * 1980-02-11 1981-08-14 Siemens Ag Appareil de radiodiagnostic comportant une chaine de television a amplificateur d'image
US4375068A (en) * 1980-04-21 1983-02-22 Technicare Corporation Radiographic apparatus and method with logarithmic video compression
DE3018129C1 (de) * 1980-05-12 1981-10-01 Siemens AG, 1000 Berlin und 8000 München Roentgendiagnostikeinrichtung zur Erstellung von Substraktionsbildern
IT1135154B (it) * 1981-01-23 1986-08-20 Consiglio Nazionale Ricerche Dispositivo rilevatore dei movimenti di un organo corporeo,particolarmente per l'impiego in un impianto per radioscopia televisiva
US4445226A (en) * 1981-05-05 1984-04-24 The Board Of Trustees Of The Leland Stanford Junior University Multiple-energy X-ray subtraction imaging system
DE3124583A1 (de) * 1981-06-23 1982-12-30 Siemens AG, 1000 Berlin und 8000 München Roentgendiagnostikeinrichtung zur darstellung von organen
DE3149483A1 (de) * 1981-12-14 1983-06-23 Siemens AG, 1000 Berlin und 8000 München Roentgendiagnostikeinrichtung zur erstellung von subtraktionsbildern
US4436095A (en) * 1981-12-22 1984-03-13 Thomson-Csf Broadcast, Inc. Method and apparatus for imaging a body
DE3202449A1 (de) * 1982-01-26 1983-07-28 Siemens AG, 1000 Berlin und 8000 München Roentgendiagnostikanlage fuer angiographische roentgenuntersuchungen
JPS58152542A (ja) * 1982-03-05 1983-09-10 株式会社東芝 Ｘ線診断装置
US4504908A (en) * 1982-03-15 1985-03-12 General Electric Company Matched filter for X-ray temporal subtraction
FR2551344B2 (fr) * 1982-04-26 1990-01-12 Siemens Ag Installation de radiodiagnostic pour examens radiologiques angiographiques
NL8202418A (nl) * 1982-06-15 1984-01-02 Philips Nv Roentgenonderzoekapparaat.
NL8202450A (nl) * 1982-06-17 1984-01-16 Philips Nv Werkwijze en inrichting voor het verwerken van roentgenbeelden.
IL67344A (en) * 1982-11-26 1986-10-31 Elscint Ltd Digital fluorography apparatus and method
JPS59103648A (ja) * 1982-12-06 1984-06-15 株式会社東芝 Ｘ線撮像装置
JPS607292A (ja) * 1983-06-27 1985-01-16 Toshiba Corp 立体ｘ線テレビ装置
DE3426056A1 (de) * 1983-07-16 1985-01-24 Leicester Polytechnic, Leicester Verfahren und vorrichtung zur kontrolle von textilien
GB8331248D0 (en) * 1983-11-23 1983-12-29 Kearney & Trecker Marwin Ltd Inspecting articles
JPS6116371A (ja) * 1984-07-03 1986-01-24 Toshiba Corp デジタルフルオログラフイ装置
US4723260A (en) * 1985-01-04 1988-02-02 Yoshibumi Mukai Medical X-ray photographic apparatus
DE3814089A1 (de) * 1987-04-27 1988-11-17 Toshiba Kawasaki Kk Verfahren und anordnung zum wiedergeben von reihenbildern
US5377681A (en) * 1989-11-13 1995-01-03 University Of Florida Method of diagnosing impaired blood flow
KR20050065543A (ko) * 2002-09-12 2005-06-29 엔라인 코포레이션 복소 영상의 획득 및 처리 시스템 및 방법
US11622741B2 (en) 2021-05-28 2023-04-11 GE Precision Healthcare LLC System and method for imaging a subject

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974386A (en) * 1974-07-12 1976-08-10 Wisconsin Alumni Research Foundation Differential X-ray method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498442A1 (fr) * 1981-01-28 1982-07-30 Gen Electric Procede et appareil de radioscopie

Also Published As

Publication number Publication date
GB2020945B (en) 1982-12-01
NL7903807A (nl) 1979-11-20
FR2426374B1 (fr) 1986-03-21
GB2020945A (en) 1979-11-21
DE2919425C2 (de) 1984-09-06
NL183628B (nl) 1988-07-18
DE2919425A1 (de) 1979-11-22

Similar Documents

Publication Publication Date Title
FR2426374A1 (fr) Formation d'images radiographiques numeriques en temps reel par soustraction
Gröundahl et al. Influence of variations in projection geometry on the detectability of periodontal bone lesions: a comparison between subtraction radiography and conventional radiographic technique
Gröndahl et al. Subtraction radiography for the diagnosis of periodontal bone lesions
US4450478A (en) Digital fluorographic method and system
DE10058449B4 (de) Verfahren und Vorrichtung zur Visualisierung einer Bewegung bei einer Ultraschallflussabbildung unter Verwendung einer kontinuierlichen Datenerfassung
US4636850A (en) Apparatus and method for enhancement of video images
DE2648589A1 (de) Verfahren und einrichtung zum messen bzw. untersuchen der eigenschaften von koerperlichen teilen bzw. von materialien
FR2450471A1 (fr) Procede de traitement par gradation et appareil pour systeme d'enregistrement d'image par rayonnement
Kiritani et al. High-speed digital image analysis of vocal cord vibration in diplophonia
Gröndahl et al. Influence of variations in projection geometry on the detectability of periodontal bone lesions.
JPS6262382B2 (fr)
SE8700314D0 (sv) Method for the generation of real-time control parameters for smoke-generating combustion processes by means of a video camera
GB1374085A (en) Method and apparatus for producing animated motion pictures
Gröndahl et al. Digital subtraction radiography for diagnosis of periodontal bone lesions with simulated high-speed systems
JPS54121043A (en) X-ray photograph processing method
JPS6480346A (en) X-ray imaging apparatus
US4941169A (en) X-ray photographic equipment
Fujine et al. Digital processing to improve image quality in real-time neutron radiography
EP0097355A1 (fr) Procédé et dispositif pour la réalisation d'une angiographie digitale intraveineuse par soustraction
FR2536617A1 (fr) Procede et dispositif de traitement point par point d'images video au cours d'un balayage, tomographique et/ou comparaison d'images statiques
JPS6472729A (en) Image diagnostic apparatus
Erickson et al. A digital radiographic analysis system
JPS5819236A (ja) Ｘ線撮像装置
Allen et al. Computerized generation of lesion models for evaluating subtraction radiography
JPH0351153B2 (fr)

Legal Events

Date Code Title Description
ST Notification of lapse
AR Application made for restoration
BR Restoration of rights