DE102008059743A1 - Medical imaging system i.e. C-arm x-ray system, for use in e.g. computer tomography system at monitoring space to treat patient, has receiver causes reproduction of measuring values on instantaneous dosage display - Google Patents
Medical imaging system i.e. C-arm x-ray system, for use in e.g. computer tomography system at monitoring space to treat patient, has receiver causes reproduction of measuring values on instantaneous dosage display Download PDFInfo
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- DE102008059743A1 DE102008059743A1 DE200810059743 DE102008059743A DE102008059743A1 DE 102008059743 A1 DE102008059743 A1 DE 102008059743A1 DE 200810059743 DE200810059743 DE 200810059743 DE 102008059743 A DE102008059743 A DE 102008059743A DE 102008059743 A1 DE102008059743 A1 DE 102008059743A1
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- Prior art keywords
- dose
- medical
- imaging
- monitoring system
- measuring values
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
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- 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
- 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
- A61B6/4458—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit or the detector unit being attached to robotic arms
-
- 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
- A61B6/504—Clinical applications involving diagnosis of blood vessels, e.g. by angiography
-
- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
Abstract
Description
Viele medizinische Einrichtungen wie Computertomographen oder auch Angiographieanlagen benutzen ionisierende Strahlen zur Bilderzeugung. Hierdurch konnten in den vergangenen Jahrzehnten viele für die Behandlung von Patienten wichtige Informationen ohne Gewebezerstörung gewonnen werden. Der größte Nachteil der Anwendung von ionisierenden Strahlung ist jedoch, dass sie insbesondere bei Anwendung in höherer Dosis zu Strahlenschäden führen können. Bei den Strahlenschäden unterscheidet man zwischen einer sogenannten deterministischen und einer stochastischen Wirkung. Die deterministische Strahlenwirkung beschreibt die Auswirkung der ionisierenden Strahlung, die in der Regel proportional zur eingebrachten Dosis ist. Hierzu zählen vor allem Verbrennungen und Schädigungen der Organteile, die im direkten Strahlengang liegen. Diese Strahlungswirkung ist besonders für den behandelten Patienten relevant. Neben dieser deterministischen Strahlungswirkung gibt es jedoch auch die sog. stochastische Strahlungswirkung. Hierunter fasst man alle jene Wirkungen zusammen, die nicht proportional zur applizierten Dosis auftreten. Dies sind z. B. Schädigungen der Keimbahn oder der Erbinformation der betroffenen Personen. Diese Strahlungswirkung ist neben dem Patienten insbesondere auch für den Untersucher relevant, da diese Wirkungen nicht streng dosiskorreliert sind. Für die stochastische Strahlungswirkung können deshalb auch keine klaren Grenzwerte definiert werden unterhalb deren die Anwendung der Strahlung als risikolos zu bezeichnen wäre. Ziel muss es deshalb sein, im Sinne einer Risiko- und Nutzenbewertung ein optimales Verhältnis von Strahlungsbelastung zum medizinischen Nutzen zu finden.Lots medical facilities such as computed tomography or angiography equipment use ionizing radiation for imaging. This allowed in the many decades ago for the treatment of patients important information is obtained without tissue destruction. The biggest disadvantage of the application of ionizing Radiation is, however, that they are especially when used in higher Dose can lead to radiation damage. With the radiation damages one differentiates between one so-called deterministic and a stochastic effect. The deterministic radiation effect describes the effect of ionizing radiation, which is usually proportional to the introduced Dose is. These include, above all, burns and injuries of the organ parts lying in the direct beam path. This radiation effect is particularly relevant to the patient being treated. Next However, there is also the so-called deterministic radiation effect. stochastic radiation effect. Under this one summarizes all those effects together, which are not proportional to the applied dose. These are z. B. Damage to the germline or genetic information the persons concerned. This radiation effect is in addition to the Especially relevant for the examiner, because these effects are not strictly dose-related. For the stochastic radiation effect can therefore also no clear limits are defined below which the application radiation could be described as risk-free. Goal must it therefore, in the sense of a risk and benefit assessment optimal ratio of radiation exposure to medical To find benefits.
Alle Personen, die mit ionisierender Strahlung umgehen, unterliegen deshalb zu ihrem eigenen Schutz der Strahleschutzüberwachung. Diese Überwachung wird von bestimmten Instituti onen (z. B. GSF = Gesellschaft für Strahlenforschung) in staatlichem Auftrag durchgeführt.All Persons dealing with ionizing radiation are therefore subject to for their own protection of the radiation protection monitoring. This monitoring is used by certain institutions (eg GSF = Society for Radiation Research) carried out on behalf of the state.
Die Überwachung geschieht in der Regel mit sog. Filmdosimetern, bei denen in Abhängigkeit von der registrierten Dosis eine innen liegende Filmschicht geschwärzt wird. Hieraus ergibt sich zwingend, dass diese Überwachung immer nur retrospektiv erfolgen kann. Eine andere Möglichkeit sind sog. Stabdosimeter, die die absorbierte Dosis direkt anzeigen können.The supervision usually happens with so-called. Film dosimeters, in which depending blackened from the registered dose an inner film layer becomes. It follows imperatively that this monitoring can only be done retrospectively. Another possibility are so-called rod dosimeters, which show the absorbed dose directly can.
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Keine dieser bisher verfügbaren Methoden beinhaltete die Möglichkeit der Integration in ein bildgebendes System. Bei diesen Systemen kann und wird zwar die Austrittsdosis gemessen und die korrespondierende Hautdosis am Patienten berechnet, eine Möglichkeit zur direkten Messung der Strahlenbelastung des Untersuchers bestand bisher jedoch nicht.None These previously available methods included the possibility integration into an imaging system. In these systems Although the outlet dose can and is measured and the corresponding Calculated skin dose on the patient, a way to direct measurement of the radiation exposure of the examiner but not yet.
Die Messung der Strahlendosis des Untersuchers erfolgt heute in der Regel über die Verwendung sog. Filmdosimeter, die die jeweilige Dosis über einen bestimmten Zeitraum aufsummieren und dann zentral ausgewertet werden. Neben diesen Filmdosimetern sind noch ein Vielzahl von anderen Dosimetertypen im Einsatz, die die Strahlungsdosis erfassen und z. T. auch direkt anzeigen können. Eine Integration in die bildgebende Einheit (z. B. Angiographieanlage) ist bisher jedoch nicht realisiert worden.The Measurement of the radiation dose of the examiner takes place today in the Rule about the use of so-called film dosimeter, the respective Add up the dose over a certain period of time and then centrally be evaluated. In addition to these film dosimeters are still a variety of other types of dosimeters that detect the radiation dose and z. T. can also display directly. An integration in however, the imaging unit (eg angiography system) is so far not realized.
Erfindungsgemäß wird die Integration eines neuartigen Personendosismesssystems zur instantanen Messung des Personendosis in eine bildgebende medizinische Einheit vorgeschlagen. Als neuartige Personendosismessysteme können beispielsweise Messsysteme analog zum Typ Unfors Alert (Unfors Instruments, Billdal, Sweden) verwendet werden. Diese Messsysteme zeichnen sich dadurch aus, dass sie die auftreffende Dosis direkt elektronisch registrieren und digital speichern. Des Weiteren kann die Dosisinformation entweder über ein Anschlussgerät (Interface) an einen konventionellen PC ausgegeben oder direkt kabellos an eine Basiseinheit übermittelt werden. Eine solche Basiseinheit kann entweder über dezidierte Schnittstellen an die medizinische Bildgebungseinheit angeschlossen werden oder die Hard- bzw. Software in die Bildgebungseinheit integriert werden. Hierdurch kann die Dosisinformation für die jeweilige Untersuchung mit den Untersuchungsdaten zusammen abgespeichert werden.According to the invention the integration of a novel personal dose measuring system for the instantaneous Measuring the personal dose in an imaging medical unit proposed. As novel personal dose systems can For example, measuring systems analogous to the type Unfors Alert (Unfors Instruments, Billdal, Sweden). These measuring systems stand out by making the impinging dose directly electronically register and save digitally. Furthermore, the dose information either via a connection device (interface) a conventional PC or directly wirelessly to a Base unit to be transmitted. Such a base unit can either have dedicated interfaces to the medical imaging unit or the hardware or software in the imaging unit to get integrated. This allows the dose information for the respective examination together with the examination data are stored together become.
Der erfinderische Schritt liegt in der Integration der neuartigen Personendosisüberwachunssystems in das bildgebende Medizinsystem, da erst durch die Kombination von beiden Systemen ein deutlicher Mehrwert generiert werden kann. Insbesondere sind folgende Vorteile denkbar:
- 1. Die beim Untersucher auftreffende Personendosis kann instantan gemessen und dem Untersucher angezeigt werden. Dieser kann hierauf reagieren und ggf. direkt Maßnahmen ergreifen um die Dosis zu reduzieren (z. B. den Abstand zur Strahlungsquelle vergrößern, andere Geräteeinstellungen verwenden, Strahlungsdauer verkürzen ect.). Diese Funktionalität kann in Zusammenhang mit einem „Dose-care” Projekt umgesetzt werden, das dem Untersucher noch andere Funktionalitäten wie z. B. dosisoptimierte Angulations- und Rotationseinstellungen bei Angiographieanlagen offeriert.
- 2. Die Anlage kann den Dosisverlauf selbsttätig monitoren und bei Auffälligkeiten ein Warnmeldung ausgeben oder die Geräteeinstellungen in soweit modifizieren, dass weniger Personendosis beim Untersucher registriert wird.
- 3. Die arbeitstägliche Strahlungsbelastung kann aufgezeichnet werden und über entsprechende Einteilung des Personals die Spitzenbelastung für die Untersucher reduziert werden.
- 4. Durch die direkte Rückkopplung von Strahlungsanwendung und der resultierenden Dosis kann dem Untersucher ein Hilfsmittel zur Vermeidung von unnötiger Strahlenbelastung an die Hand gegeben werden.
- 5. Die Darstellung der Dosismesswerte kann z. B. über die Monitoranlage (z. B. wide screen display) erfolgen, wodurch die Anbringung eines eigenen Monitorsystems für die Personendosimetrie überflüssig ist.
- 1. The personal dose to the examiner can be instantaneously measured and displayed to the examiner. The latter can react to this and, if necessary, directly take measures to reduce the dose (eg increase the distance to the radiation source, use other device settings, avoid radiation duration) zen ect.). This functionality can be implemented in the context of a "dose-care" project, which offers the examiner other functionalities such. B. dose-optimized angulation and rotation settings in Angiographieanlagen offered.
- 2. The system can automatically monitor the course of the dose and, if abnormalities occur, issue a warning message or modify the device settings to such an extent that less personal dose is registered with the examiner.
- 3. The daily radiation exposure can be recorded and, with the appropriate classification of the personnel, the peak load for the examiner can be reduced.
- 4. Direct feedback of radiation application and the resulting dose may provide the examiner with an aid to avoid unnecessary radiation exposure.
- 5. The representation of dose readings can be z. B. over the monitor system (eg., Wide screen display), whereby the attachment of a separate monitor system for personal dosimetry is superfluous.
Die Erfindung ist nachfolgend anhand von in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:The Invention is described below with reference to the drawing Embodiments explained in more detail. Show it:
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ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102006052463 A1 [0004] - DE 102006052463 A1 [0004]
- - WO 2007081268 A1 [0005] WO 2007081268 A1 [0005]
- - WO 2007091940 A1 [0006] - WO 2007091940 A1 [0006]
- - DE 102005012700 A1 [0016] DE 102005012700 A1 [0016]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE200810059743 DE102008059743A1 (en) | 2008-12-01 | 2008-12-01 | Medical imaging system i.e. C-arm x-ray system, for use in e.g. computer tomography system at monitoring space to treat patient, has receiver causes reproduction of measuring values on instantaneous dosage display |
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DE200810059743 DE102008059743A1 (en) | 2008-12-01 | 2008-12-01 | Medical imaging system i.e. C-arm x-ray system, for use in e.g. computer tomography system at monitoring space to treat patient, has receiver causes reproduction of measuring values on instantaneous dosage display |
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Publication Number | Publication Date |
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DE102008059743A1 true DE102008059743A1 (en) | 2010-06-02 |
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DE200810059743 Ceased DE102008059743A1 (en) | 2008-12-01 | 2008-12-01 | Medical imaging system i.e. C-arm x-ray system, for use in e.g. computer tomography system at monitoring space to treat patient, has receiver causes reproduction of measuring values on instantaneous dosage display |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19704708A1 (en) * | 1997-02-07 | 1998-08-20 | Fraunhofer Ges Forschung | Automatic cut-out device for radiation source e.g. X=ray source or UV lamp |
DE102005012700A1 (en) | 2005-03-18 | 2006-09-28 | Siemens Ag | X-ray device for use in operation theater, has x-ray source arrangement and x-ray detector, which are attached at common carrier that is attached at hand of robot having six rotation axes |
WO2007081268A1 (en) | 2006-01-13 | 2007-07-19 | Thomas Unfors | Device and arrangement for sensing and displaying radiation |
WO2007091940A1 (en) | 2006-02-08 | 2007-08-16 | Thomas Unfors | System of radiation meters |
DE102006052463A1 (en) | 2006-11-07 | 2008-01-17 | Siemens Ag | Object`s e.g. foodstuff, radioactive dose rate measuring device, has radioactive sensitive sensor connected to memory cell and taking change in state depending on radioactive dose rate, where memory unit varies depending on sensor state |
DE102006046321A1 (en) * | 2006-09-29 | 2008-04-03 | Siemens Ag | Dosimeter for use in control system for monitoring of radiation exposure, has radio interface formed for transmitting storage condition value to control device, where storage condition value represents storage condition |
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2008
- 2008-12-01 DE DE200810059743 patent/DE102008059743A1/en not_active Ceased
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19704708A1 (en) * | 1997-02-07 | 1998-08-20 | Fraunhofer Ges Forschung | Automatic cut-out device for radiation source e.g. X=ray source or UV lamp |
DE102005012700A1 (en) | 2005-03-18 | 2006-09-28 | Siemens Ag | X-ray device for use in operation theater, has x-ray source arrangement and x-ray detector, which are attached at common carrier that is attached at hand of robot having six rotation axes |
WO2007081268A1 (en) | 2006-01-13 | 2007-07-19 | Thomas Unfors | Device and arrangement for sensing and displaying radiation |
WO2007091940A1 (en) | 2006-02-08 | 2007-08-16 | Thomas Unfors | System of radiation meters |
DE102006046321A1 (en) * | 2006-09-29 | 2008-04-03 | Siemens Ag | Dosimeter for use in control system for monitoring of radiation exposure, has radio interface formed for transmitting storage condition value to control device, where storage condition value represents storage condition |
DE102006052463A1 (en) | 2006-11-07 | 2008-01-17 | Siemens Ag | Object`s e.g. foodstuff, radioactive dose rate measuring device, has radioactive sensitive sensor connected to memory cell and taking change in state depending on radioactive dose rate, where memory unit varies depending on sensor state |
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Owner name: SIEMENS HEALTHCARE GMBH, DE Free format text: FORMER OWNER: SIEMENS AKTIENGESELLSCHAFT, 80333 MUENCHEN, DE |
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