DE69100437D1 - Verfahren zur korrektur von optischen dichtmessungen auf einem radiographischen film ausgefuehrt. - Google Patents

Verfahren zur korrektur von optischen dichtmessungen auf einem radiographischen film ausgefuehrt.

Info

Publication number
DE69100437D1
DE69100437D1 DE91402315T DE69100437T DE69100437D1 DE 69100437 D1 DE69100437 D1 DE 69100437D1 DE 91402315 T DE91402315 T DE 91402315T DE 69100437 T DE69100437 T DE 69100437T DE 69100437 D1 DE69100437 D1 DE 69100437D1
Authority
DE
Germany
Prior art keywords
optical density
correcting optical
radiographic film
density measures
measures performed
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
DE91402315T
Other languages
English (en)
Other versions
DE69100437T2 (de
Inventor
Michel Grimaud
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.)
General Electric CGR SA
Original Assignee
General Electric CGR 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 General Electric CGR SA filed Critical General Electric CGR SA
Application granted granted Critical
Publication of DE69100437D1 publication Critical patent/DE69100437D1/de
Publication of DE69100437T2 publication Critical patent/DE69100437T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G06T5/70—
    • 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
    • A61B6/58—Testing, adjusting or calibrating apparatus or devices for radiation diagnosis
    • A61B6/582—Calibration
    • A61B6/583—Calibration using calibration phantoms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration by the use of local operators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/50—Image enhancement or restoration by the use of more than one image, e.g. averaging, subtraction
    • 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
    • G06T2207/20—Special algorithmic details
    • G06T2207/20024—Filtering details
    • G06T2207/20032—Median filtering
    • 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
    • G06T2207/30068—Mammography; Breast

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Radiology & Medical Imaging (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Image Processing (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Image Analysis (AREA)
  • Radiography Using Non-Light Waves (AREA)
DE91402315T 1990-08-31 1991-08-26 Verfahren zur Korrektur von optischen Dichtmessungen auf einem radiographischen Film ausgeführt. Expired - Fee Related DE69100437T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9010859A FR2666426B1 (fr) 1990-08-31 1990-08-31 Procede de correction des mesures de densite optique effectuees sur un film radiographique.

Publications (2)

Publication Number Publication Date
DE69100437D1 true DE69100437D1 (de) 1993-11-04
DE69100437T2 DE69100437T2 (de) 1994-01-20

Family

ID=9399988

Family Applications (1)

Application Number Title Priority Date Filing Date
DE91402315T Expired - Fee Related DE69100437T2 (de) 1990-08-31 1991-08-26 Verfahren zur Korrektur von optischen Dichtmessungen auf einem radiographischen Film ausgeführt.

Country Status (6)

Country Link
US (1) US5297036A (de)
EP (1) EP0478406B1 (de)
JP (1) JPH0732471B2 (de)
DE (1) DE69100437T2 (de)
FI (1) FI99172C (de)
FR (1) FR2666426B1 (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69213380T2 (de) * 1991-09-27 1997-03-20 Agfa Gevaert Nv Reproduktionsverfahren für medizinische Bilder,das optimale Bildqualität für Diagnose herstellt
JPH06259541A (ja) * 1992-10-30 1994-09-16 Toshiba Corp 画像歪み補正方法およびそのシステム
IL119767A (en) * 1993-08-13 1998-02-08 Sophis View Tech Ltd System and method for diagnosis of living tissue diseases
EP0639818B1 (de) * 1993-08-16 1997-01-22 Agfa-Gevaert N.V. Verfahren sowie Vorrichtung zur Überwachung der Empfindlichkeit eines Systems zur Wiedergabe von in einem photostimulierbaren Leuchtstoffschirm gespeicherten Bildern
JPH09508815A (ja) * 1993-11-29 1997-09-09 アーチ ディヴェロプメント コーポレイション 乳房ｘ線写真における、改良された、コンピュータによる、腫瘤の発見および分類のための自動的方法およびシステム
US5592571A (en) * 1994-03-08 1997-01-07 The University Of Connecticut Digital pixel-accurate intensity processing method for image information enhancement
WO1996016534A2 (en) * 1994-11-25 1996-06-06 Sophisview Technologies, Ltd. System and method for diagnosis of living tissue diseases
IL116738A0 (en) * 1995-01-23 1996-05-14 Gen Electric Detector z-axis gain correction for a ct system
US5565678A (en) * 1995-06-06 1996-10-15 Lumisys, Inc. Radiographic image quality assessment utilizing a stepped calibration target
US5648660A (en) * 1996-01-05 1997-07-15 Sterling Diagnostic Imaging, Inc. Method and apparatus for reducing noise in a radiation capture device
US5815591A (en) * 1996-07-10 1998-09-29 R2 Technology, Inc. Method and apparatus for fast detection of spiculated lesions in digital mammograms
US5917929A (en) * 1996-07-23 1999-06-29 R2 Technology, Inc. User interface for computer aided diagnosis system
GB9618697D0 (en) * 1996-09-06 1996-10-16 Digi Media Vision Ltd Method and apparatus to detect the presence of noise
US5982916A (en) * 1996-09-30 1999-11-09 Siemens Corporate Research, Inc. Method and apparatus for automatically locating a region of interest in a radiograph
JP3629128B2 (ja) * 1997-11-20 2005-03-16 富士写真フイルム株式会社 画像処理方法
CA2396264A1 (en) 2000-01-06 2001-07-12 Azucena De Latorre (Deceased) Systems and methods for monitoring credit of trading counterparties
JP2002119499A (ja) * 2000-10-18 2002-04-23 Konica Corp 放射線画像処理装置及び放射線画像用カセッテ
US7394944B2 (en) * 2003-04-11 2008-07-01 Seiko Epson Corporation Method and system for finding spatial medians in a sliding window environment
FR2854974B1 (fr) * 2003-05-14 2005-07-08 Ge Med Sys Global Tech Co Llc Procede d'amelioration de contraste/luminosite d'images radiographiques
US7522779B2 (en) * 2004-06-30 2009-04-21 Accuray, Inc. Image enhancement method and system for fiducial-less tracking of treatment targets
US7366278B2 (en) * 2004-06-30 2008-04-29 Accuray, Inc. DRR generation using a non-linear attenuation model
JP2006068373A (ja) * 2004-09-03 2006-03-16 Fuji Photo Film Co Ltd 乳頭検出装置およびそのプログラム
US7218706B2 (en) 2004-12-20 2007-05-15 General Electric Company Energy discrimination radiography systems and methods for inspecting industrial components
US20080037843A1 (en) * 2006-08-11 2008-02-14 Accuray Incorporated Image segmentation for DRR generation and image registration

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673394A (en) * 1969-02-18 1972-06-27 North American Rockwell Measuring method and apparatus
FR2461279B1 (fr) * 1979-07-11 1987-01-02 Fuji Photo Film Co Ltd Procede de traitement d'une image radiographique
IL70214A (en) * 1983-11-13 1987-10-20 Elscint Ltd Image contrast enhancement arrangement
US4794531A (en) * 1984-11-07 1988-12-27 Hitachi, Ltd Unsharp masking for image enhancement
JPS61248665A (ja) * 1985-04-26 1986-11-05 Hitachi Medical Corp フイルム画像読取装置
US4811090A (en) * 1988-01-04 1989-03-07 Hypervision Image emission microscope with improved image processing capability
US4991092A (en) * 1988-08-12 1991-02-05 The Regents Of The University Of California Image processor for enhancing contrast between subregions of a region of interest
US5124913A (en) * 1989-12-18 1992-06-23 Eastman Kodak Co. Rule-based technique to automatically determine the final scan gain in storage phosphor radiography

Also Published As

Publication number Publication date
FI914047A (fi) 1992-03-01
FI914047A0 (fi) 1991-08-28
FR2666426A1 (fr) 1992-03-06
JPH0732471B2 (ja) 1995-04-10
FI99172B (fi) 1997-06-30
EP0478406B1 (de) 1993-09-29
JPH04246982A (ja) 1992-09-02
FI99172C (fi) 1997-10-10
DE69100437T2 (de) 1994-01-20
FR2666426B1 (fr) 1994-08-19
EP0478406A1 (de) 1992-04-01
US5297036A (en) 1994-03-22

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee