WO2006027320A1 - Appareil de diagnostic a rayons x notamment destine a la mammographie - Google Patents

Appareil de diagnostic a rayons x notamment destine a la mammographie Download PDF

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Publication number
WO2006027320A1
WO2006027320A1 PCT/EP2005/054234 EP2005054234W WO2006027320A1 WO 2006027320 A1 WO2006027320 A1 WO 2006027320A1 EP 2005054234 W EP2005054234 W EP 2005054234W WO 2006027320 A1 WO2006027320 A1 WO 2006027320A1
Authority
WO
WIPO (PCT)
Prior art keywords
ray
diagnostic device
ray diagnostic
control device
body part
Prior art date
Application number
PCT/EP2005/054234
Other languages
German (de)
English (en)
Inventor
Martin Hoheisel
Thomas Mertelmeier
Marcus Pfister
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to US11/661,889 priority Critical patent/US20070249925A1/en
Publication of WO2006027320A1 publication Critical patent/WO2006027320A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4869—Determining body composition
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0537—Measuring body composition by impedance, e.g. tissue hydration or fat content
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4869—Determining body composition
    • A61B5/4872—Body fat
    • 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
    • A61B6/502—Clinical applications involving diagnosis of breast, i.e. mammography
    • 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
    • A61B6/54—Control of apparatus or devices for radiation diagnosis
    • A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
    • 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
    • A61B6/54—Control of apparatus or devices for radiation diagnosis
    • A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
    • A61B6/544—Control of apparatus or devices for radiation diagnosis involving control of exposure dependent on patient size
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/16—Details of sensor housings or probes; Details of structural supports for sensors
    • A61B2562/17—Comprising radiolucent components

Definitions

  • the invention relates to an X-ray diagnostic device with a control device for optimum adjustment of the radiation of the X-ray source for the respective patient, in particular for mammography.
  • the difficulty of determining the optimal exposure, even in mammography, is that the female breast is a very variable organ. Apart from the size, that is, in the compressed case of the thickness, the composition also varies from very high-fat to glandular tissue. This requires a precise adaptation of the exposure parameters .
  • a measuring cell is arranged in the beam path behind the film cassette, which measures the radiation not absorbed by the amplifier film and uses it to control the exposure time.
  • the beam hardening influences the measured values in such a way that, depending on the thickness of the breast, incorrect exposures may occur. This can in turn be solved with the help of a double detector.
  • Digital solid-state detectors are linear over wide dose ranges and thus much more tolerant to different exposures. At high dose, overdriven by limiting and at low dose electronic noise plays a disturbing role. A novel concept for Control of mammography with such a detector was described in DE 100 19 242 A1.
  • both the film-film system and the solid-state detector system have in common that for the adjustment of the beam quality, that is to say for the selection of the high voltage of the x-ray tube, only the thickness of the compressed breast is decisive.
  • the variable to ⁇ composition of the breast is not considered. Therefore, the set voltage is not always optimal.
  • No. 6,157,697 discloses a device with which both X-ray images and 3D distributions of the electrical impedance can be recorded.
  • the measuring arrangement provided there serves to accommodate a three-dimensional
  • a control unit which serves to correctly control the multiplicity of existing electrodes according to a specific pattern or to select parameter sets stored in the control unit for the operating parameters mentioned by means of a keyboard 14.
  • Be ⁇ operating parameters of the x-ray emitter input directly from the keyboard.
  • the invention is therefore based on the object, an X-ray diagnostic device in such a way that especially in mammography, the different consistency and Caribbeanset ⁇ tion of the body part to be X-ray detected and used for optimal adjustment of the radiation of the X-ray source.
  • such an X-ray diagnostic device is characterized by a measuring arrangement coupled to the control device for determining the tissue composition of the body part to be examined, preferably in the form of an electrode for attachment to the body part to be examined, which is coupled to the control device thoroughlyfett analyseseinrich- tion, wherein the control device is installed ⁇ for optimal adjustment of the radiation of the X-ray source for each patient on the basis of the measured tissue composition.
  • an optimized radiation examination can be carried out after the system has been pre-adjusted accordingly.
  • optimum values for the anode and filter material, the filter thickness and the tube voltage are determined by simulation or phantom measurement for each combination of breast thickness and fat content and stored in, preferably in the control device. Tables are stored.
  • the body fat analysis device may further Ausgestal ⁇ tung
  • the invention is very simple as Elektroimpedanzmessein- direction be formed in the via two impedance-danzelektrodenpacke the skin resistance and the tissue was counter- ⁇ the examination region is determined.
  • the electrodes and their electrical leads are formed of material permeable to X-rays and into which Compression plates are integrated.
  • the electrodes and the electrical leads may consist of aluminum, an aluminum-magnesium alloy or an organic conductive polymer such as, for example, polyaniline or PEDOT (polyethylene thioxythiophene).
  • an organic conductive polymer such as, for example, polyaniline or PEDOT (polyethylene thioxythiophene).
  • control device additional patient-specific data, such as the thickness of the body part to be determined, ie especially the thickness of compressed breast plates, the compression force, the hormone and therapy status and the age of the patient and / or the presence of implants can be processed as parameters for optimizing the radiator setting.
  • FIG. 1 is a schematic representation of an X-ray diagnostic device for mammography
  • FIG. 2 and 3 partial views of the compression plates such as the arrangement of the so ⁇ for determining the overall webezusammen applicant serving electrodes, it being possible for these electrodes once from the compres sion ⁇ plates are separated and once tegriert in this in ⁇ .
  • an inventive mammography Röntgen ⁇ is apparatus with a powered from a high voltage generator 1 with high and heating voltage X-ray tube 2 is shown which produces a cone-shaped X-rays 3, which penetrates to un ⁇ tersuchende Mamma 4 of a patient and on an X-ray 3 sensitive digital Fest stresses ⁇ image converter 5 beam images generated.
  • the Festissoneckand ⁇ ler 5 contains, for example, switching elements of amorphous silicon (a-Si: H) and has arranged in a matrix Schm ⁇ points.
  • X-rays 3 are arranged from ⁇ replaceable filter 6 near the X-ray tube. 2
  • the output signal of the solid-state image converter 5 is fed to an image processing system 7, which may have converters, image memories and processing circuitry. It is connected to a monitor 8 for reproducing the recorded X-ray images.
  • the user interface 9 is connected via a system control and communication 10 with the other components of the X-ray diagnostic device.
  • the mamma to be examined 4 is pressed by a compression ⁇ plate 11 against a cover plate 12 at the inlet side of the solid state image converter 5.
  • a feeler 13 measures the
  • the measured thickness is transmitted ei ⁇ ner control device 14, which also may be part of the Hoch ⁇ voltage generator 1 or the image processing system. 7
  • the X-radiation 3 penetrates partly the Mamma 4 and falls weakened on a region 16 of the solid-state image converter 5. Side of the Mamma 4 part of the X-radiation 3 strikes unattenuated, ie directly on a region 15 of the solid-state transducer fifth
  • the X-ray diagnostic device shown schematically in FIG. 1 also contains two pairs of electrodes 17 and 18 which are compressed on opposite sides of the compression plates 11 and 12, respectively Mamma are to be arranged. About each arranged on the same side of the chest electrodes 17, 17 and 18, 18, the measurement of skin resistance, and via one of the Elect ⁇ clear 17 and 18, with transversely ver secureddem current through the chest, the measurement path of the fat content.
  • the electrodes shown in FIGS. 1 and 2 as separate components which are arranged on the opposite free sides of the breast, the variant shown in FIG.
  • the electrodes 17 and 18 in the compression plates 11 and 12 are integrated, which of course makes it necessary that these electrodes and their leads from X-rays effetives ⁇ sigem material.
  • the arrows 19 and 20 show the type of interconnection of the electrodes for measuring once the skin resistance (19) and in the case of the interconnection 20 of the Fettge ⁇ haltes.
  • the control device 14 the optimum values for anode material, filter 6, tube voltage, tube current and duration of the x-ray pulse associated with the thickness and the known geometry-the distance x-ray focus solid-state image converter in one of a table memory
  • the filter thickness and the tubes ⁇ voltage determined in advance by simulation or measurement and phantom been determined in form of a table in the table memory
  • the invention is not limited to the illustrated amongsbei ⁇ games.
  • it is of course completely indifferent as to whether the mammary between perpendicular Kom ⁇ pressionsplatten or compressed between th horizontal Kompressionsplat- and Be Wegsichti ⁇ invention account the tissue composition of the examined body part for adjustment of the X-ray source can of course also be used when a film-film system is used instead of a Festkör ⁇ pernduwandlers.

Abstract

L'invention concerne un appareil de diagnostic à rayons X comportant un dispositif de commande (14) pour le réglage optimal du rayonnement de l'émetteur à rayons X (2) en fonction de chaque patient. L'appareil selon l'invention comporte également un dispositif de mesure couplé au dispositif de commande, destiné à déterminer la composition tissulaire de la partie du corps à examiner (4), ledit dispositif de commande étant conçu pour le réglage optimal du rayonnement de l'émetteur à rayons X en fonction de chaque patient, sur la base de la composition tissulaire mesurée.
PCT/EP2005/054234 2004-09-06 2005-08-29 Appareil de diagnostic a rayons x notamment destine a la mammographie WO2006027320A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/661,889 US20070249925A1 (en) 2005-08-29 2005-08-29 X-Ray Diagnostic Device for Mammography

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004043032A DE102004043032A1 (de) 2004-09-06 2004-09-06 Röntgendiagnostikeinrichtung, insbesondere für die Mammographie
DE102004043032.2 2004-09-06

Publications (1)

Publication Number Publication Date
WO2006027320A1 true WO2006027320A1 (fr) 2006-03-16

Family

ID=35169614

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/054234 WO2006027320A1 (fr) 2004-09-06 2005-08-29 Appareil de diagnostic a rayons x notamment destine a la mammographie

Country Status (2)

Country Link
DE (1) DE102004043032A1 (fr)
WO (1) WO2006027320A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010033511A1 (de) 2010-08-05 2012-02-09 Siemens Aktiengesellschaft Verfahren und Vorrichtung zum Erzeugen einer Mehrzahl von projektiven Röntgenbildern von einem Untersuchungsobjekt aus unterschiedlichen Richtungen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10019242A1 (de) * 2000-04-18 2001-10-31 Siemens Ag Röntgendiagnostikeinrichtung mit Festkörperbildwandler für die Mammographie
US20040125921A1 (en) * 2002-10-29 2004-07-01 Cyril Allouche Method to determine the optimal parameters of a radiography acquisition
US20050031080A1 (en) * 2003-07-22 2005-02-10 Klaus Klingenbeck-Regn X-ray diagnostic apparatus with a body mass index calculator for controlling x-ray emissions
DE10333294A1 (de) * 2003-07-22 2005-02-24 Siemens Ag Röntgendiagnostikeinrichtung mit einem Patientenlagerungstisch
WO2005051198A1 (fr) * 2003-11-25 2005-06-09 Koninklijke Philips Electronics, N.V. Adaptation automatique du dosage en fonction de l'indice de masse corporelle d'un patient lors de la determination du score de calcium au moyen d'un tomodensitometre

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19905532A1 (de) * 1998-03-24 1999-09-30 Siemens Ag Vorrichtung zur Untersuchung von lebendem Gewebe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10019242A1 (de) * 2000-04-18 2001-10-31 Siemens Ag Röntgendiagnostikeinrichtung mit Festkörperbildwandler für die Mammographie
US20040125921A1 (en) * 2002-10-29 2004-07-01 Cyril Allouche Method to determine the optimal parameters of a radiography acquisition
US20050031080A1 (en) * 2003-07-22 2005-02-10 Klaus Klingenbeck-Regn X-ray diagnostic apparatus with a body mass index calculator for controlling x-ray emissions
DE10333294A1 (de) * 2003-07-22 2005-02-24 Siemens Ag Röntgendiagnostikeinrichtung mit einem Patientenlagerungstisch
WO2005051198A1 (fr) * 2003-11-25 2005-06-09 Koninklijke Philips Electronics, N.V. Adaptation automatique du dosage en fonction de l'indice de masse corporelle d'un patient lors de la determination du score de calcium au moyen d'un tomodensitometre

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Publication number Publication date
DE102004043032A1 (de) 2006-03-30

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