DE19523562A1 - X-ray stereo image generating method in medical X-ray examination - Google Patents

X-ray stereo image generating method in medical X-ray examination

Info

Publication number
DE19523562A1
DE19523562A1 DE19523562A DE19523562A DE19523562A1 DE 19523562 A1 DE19523562 A1 DE 19523562A1 DE 19523562 A DE19523562 A DE 19523562A DE 19523562 A DE19523562 A DE 19523562A DE 19523562 A1 DE19523562 A1 DE 19523562A1
Authority
DE
Germany
Prior art keywords
images
ray
image
subtraction
stereo
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.)
Ceased
Application number
DE19523562A
Other languages
German (de)
Inventor
Hans-Peter Dipl Ing Seubert
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.)
Siemens AG
Original Assignee
Siemens AG
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 AG filed Critical Siemens AG
Priority to DE19523562A priority Critical patent/DE19523562A1/en
Priority to JP8166371A priority patent/JPH0910192A/en
Publication of DE19523562A1 publication Critical patent/DE19523562A1/en
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H05G1/60—Circuit arrangements for obtaining a series of X-ray photographs or for X-ray cinematography
    • 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
    • A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/022—Stereoscopic imaging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/204—Image signal generators using stereoscopic image cameras
    • H04N13/207—Image signal generators using stereoscopic image cameras using a single 2D image sensor
    • H04N13/221—Image signal generators using stereoscopic image cameras using a single 2D image sensor using the relative movement between cameras and objects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/296—Synchronisation thereof; Control thereof
    • 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
    • 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
    • A61B6/4021—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
    • A61B6/4028—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot resulting in acquisition of views from substantially different positions, e.g. EBCT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/20—Image signal generators
    • H04N13/204—Image signal generators using stereoscopic image cameras
    • H04N13/254—Image signal generators using stereoscopic image cameras in combination with electromagnetic radiation sources for illuminating objects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing

Abstract

Stereo X-ray images are generated by continuous generation of subtraction images for two focus positions. One focus position is for the left image and the other for the right image of a stereo image pair. A C-shaped arc X-ray imaging system swings between two focus positions. A blank image and a row of full images are generated in each focus position. The full images are subtracted from the blank image, and the subtraction images are displayed on a monitor. An X-ray generator and X-ray amplifier are fixed to the C-shaped arc. The C-shaped arc swings about a horizontal axis so that the patient can be irradiated from different directions. Alternatively, two monitors can be used for reproduction of the subtraction images of each focus position.

Description

Zur Erzeugung von Röntgen-Stereobildern ist es bekannt, das Untersuchungsobjekt aus zwei unterschiedlichen Fokusposi­ tionen zu durchstrahlen. Auf diese Weise wird ein Stereobild­ paar erzeugt, das Informationen über die räumliche Lage von Körperregionen oder Organen enthält.For generating x-ray stereo images, it is known that Examination object from two different focus positions ions to shine through. This way it becomes a stereo image couple that generates information about the spatial location of Contains body regions or organs.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Erzeugung von Röntgen-Stereobildern zu schaffen, das es er­ laubt, mit einem einzigen Gerät räumliche Subtraktionsbilder zu erzeugen.The invention has for its object a method for Generation of x-ray stereo images to create it leaves, with a single device spatial subtraction images to create.

Diese Aufgabe ist erfindungsgemäß gelöst durch die Merkmale des Patentanspruches 1. Weiterbildungen ergeben sich aus den Unteransprüchen.According to the invention, this object is achieved by the features of claim 1. Further developments result from the Subclaims.

Die Erfindung ist nachfolgend anhand der Zeichnung näher er­ läutert. Es zeigen:The invention is based on the drawing he he purifies. Show it:

Fig. 1 die wesentlichen Teile einer Röntgenaufnahmeeinrich­ tung für ein Verfahren nach der Erfindung, und Fig. 1 shows the essential parts of a device X-ray recording for a method according to the invention, and

Fig. 2 und 3 Impulsfolgen zur Erläuterung der Fig. 1. Fig. 2 and 3 pulse sequences for explaining FIG. 1.

In der Fig. 1 ist ein Lagerungstisch 1 dargestellt, auf dem ein Patient 2 liegt. Der Lagerungstisch 1 ist mit Hilfe eines Stativs 3 an der Decke 4 des Untersuchungsraumes aufgehängt. Zur Anfertigung von Röntgenbildern sind ein Röntgenstrahler 5 und ein Röntgenbildverstärker 6 mit nachgeschalteter Einzel­ bildkamera sowie Fernsehkette 10 vorgesehen. Der Röntgen­ strahler 5 und der Röntgenbildverstärker 6 sind an einem C- Bogen 7 befestigt, welcher an einem Sockel 8 verstellbar ge­ lagert ist. Zur Bildwiedergabe ist ein Monitor 9 an der Decke 4 aufgehängt.In FIG. 1, a support table 1 is shown, on which a patient 2. The storage table 1 is suspended from the ceiling 4 of the examination room using a tripod 3 . To produce x-ray images, an x-ray emitter 5 and an x-ray image intensifier 6 with a subsequent single image camera and television chain 10 are provided. The X-ray emitter 5 and the X-ray image intensifier 6 are attached to a C-arm 7 , which is adjustably supported on a base 8 . A monitor 9 is suspended from the ceiling 4 for image reproduction.

Der C-Bogen 7 ist um eine horizontale Achse 10 schwenkbar, so daß der Patient 2 unter verschiedenen Richtungen durchstrahlt werden kann. Es sind zwei Fokuspositionen für das linke und das rechte Bild eines Stereobildpaares vorgesehen.The C-arm 7 is pivotable about a horizontal axis 10 so that the patient 2 can be irradiated in different directions. Two focus positions are provided for the left and the right image of a stereo image pair.

Zur Anfertigung von Stereo-Subtraktionsbildern wird in jeder der Fokuspositionen ein Maskenbild ohne Kontrastmittel ange­ fertigt und gespeichert. Nachdem der Kontrastmittelbolus die interessierende Region erreicht hat, pendelt für die Bildsub­ traktion der C-Bogen 7, so daß der Fokus zwischen seinen bei­ den Aufnahmepositionen pendelt und es wird in jeder Aufnahme­ position eine Bildserie angefertigt, deren Bilder vom Masken­ bild subtrahiert werden. Die Röntgenpulse für das linke Ste­ reobild verlaufen beispielsweise gemäß Fig. 2 und für das rechte Stereobild gemäß Fig. 3. Die durch die Röntgenpulse A, C, E usw. erzeugten Füllungsbilder werden vom entsprechenden Maskenbild subtrahiert, so daß sich die linken Subtraktions­ bilder fortlaufend als linkes Stereobild ergeben. Entspre­ chend werden die durch die Röntgenpulse B, D, F usw. erzeug­ ten Füllungsbilder von dem entsprechenden Maskenbild subtra­ hiert, so daß sich die rechten Subtraktionsbilder ergeben.In order to produce stereo subtraction images, a mask image without contrast medium is made and stored in each of the focus positions. After the contrast medium bolus has reached the region of interest, the C-arm 7 oscillates for image subtraction, so that the focus oscillates between its at the exposure positions and an image series is made in each exposure position, the images of which are subtracted from the mask image. The X-ray pulses for the left stereo image run for example according to FIG. 2 and for the right stereo image according to FIG. 3. The filling images generated by the X-ray pulses A, C, E etc. are subtracted from the corresponding mask image, so that the left subtraction images are continuous result as a left stereo image. Accordingly, the fill images generated by the X-ray pulses B, D, F etc. are subtracted from the corresponding mask image, so that the right subtraction images result.

Die Maskenbilder können vor oder nach der Kontrastmittelgabe angefertigt werden. Die Wiedergabe der Subtraktionsbilder kann auf dem Monitor 9 in der Weise erfolgen, daß wechsel­ weise jeweils das linke und das rechte Stereo-Subtraktions­ bild erscheint. Es können hierfür aber auch zwei getrennte Monitore vorhanden sein.The mask images can be taken before or after the contrast medium is given. The reproduction of the subtraction images can take place on the monitor 9 in such a way that the left and right stereo subtraction images appear alternately. However, two separate monitors can also be provided for this.

Claims (3)

1. Verfahren zum Betrieb einer Röntgenaufnahmeeinrichtung für die Erzeugung von Röntgen-Stereobildern mit einem C-Bogen (7), an dessen Enden ein Röntgenstrahler (5) und ein Bildemp­ fänger (6) gelagert sind, dem eine Fernsehkette (10) nachge­ schaltet ist, wobei der C-Bogen (7) um eine horizontale Achse (10) schwenkbar ist, so daß durch Verschwenken des C-Bogens (7) Bilder aus unterschiedlichen Richtungen angefertigt wer­ den können, gekennzeichnet durch folgende Merkmale:
Anfertigung von Maskenbildern für zwei unterschiedliche Fokuspositionen,
kontinuierliche Anfertigung von Füllungsbildern, wobei das Aufnahmesystem (5, 6, 7) zwischen beiden Fokuspositionen pen­ delt,
Subtraktion jedes Füllungsbildes vom entsprechenden Masken­ bild und Wiedergabe der Subtraktionsbilder auf einem Monitor (9).1. A method for operating an X-ray recording device for the production of X-ray stereo images with a C-arm ( 7 ), at the ends of which an X-ray source ( 5 ) and an image sensor ( 6 ) are mounted, which is followed by a television chain ( 10 ) , wherein the C-arm ( 7 ) can be pivoted about a horizontal axis ( 10 ), so that images can be produced from different directions by pivoting the C-arm ( 7 ), characterized by the following features:
Creation of mask images for two different focus positions,
continuous production of filling images, the recording system ( 5 , 6 , 7 ) separating between the two focus positions,
Subtract each fill image from the corresponding mask image and display the subtraction images on a monitor ( 9 ). 2. Verfahren nach Anspruch 1, bei dem ein einziger Monitor (9) für die wechselweise Wiedergabe der Subtraktionsbilder vorgesehen ist.2. The method according to claim 1, wherein a single monitor ( 9 ) is provided for the alternate reproduction of the subtraction images. 3. Verfahren nach Anspruch 1, bei dem zwei Monitore vorge­ sehen sind, von denen jeder für die Wiedergabe der Subtrak­ tionsbilder einer Fokusposition dient.3. The method of claim 1, in which two monitors are pre-featured are seen, each for playing the subtrak serving images of a focus position.
DE19523562A 1995-06-28 1995-06-28 X-ray stereo image generating method in medical X-ray examination Ceased DE19523562A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19523562A DE19523562A1 (en) 1995-06-28 1995-06-28 X-ray stereo image generating method in medical X-ray examination
JP8166371A JPH0910192A (en) 1995-06-28 1996-06-26 X-ray stereo image forming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19523562A DE19523562A1 (en) 1995-06-28 1995-06-28 X-ray stereo image generating method in medical X-ray examination

Publications (1)

Publication Number Publication Date
DE19523562A1 true DE19523562A1 (en) 1997-01-02

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ID=7765507

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19523562A Ceased DE19523562A1 (en) 1995-06-28 1995-06-28 X-ray stereo image generating method in medical X-ray examination

Country Status (2)

Country Link
JP (1) JPH0910192A (en)
DE (1) DE19523562A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007045740A1 (en) * 2007-09-25 2009-04-23 Siemens Ag X-ray imaging system for use during treatment of e.g. stenosis of coronary artery in cardiology, has X-ray-C-arm movable by control unit that successively receives two inputs with which X-ray-C-arm is brought into user-defined position

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2220559A1 (en) * 1972-04-26 1973-11-08 Siemens Ag DEVICE FOR THE PRODUCTION OF STEREO X-ray images
DE3137516A1 (en) * 1981-09-21 1983-04-07 Siemens AG, 1000 Berlin und 8000 München X-ray diagnostic device having a pivotable, U-shaped support for the X-ray tube and an image-recording device
EP0129910B1 (en) * 1983-06-27 1987-11-25 Kabushiki Kaisha Toshiba X-ray diagnostic apparatus for allowing stereoscopic visualization on x-ray images of an object under examination
DE3623053A1 (en) * 1986-07-09 1988-01-21 Siemens Ag X-RAY WINDOW EQUIPMENT

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2220559A1 (en) * 1972-04-26 1973-11-08 Siemens Ag DEVICE FOR THE PRODUCTION OF STEREO X-ray images
DE3137516A1 (en) * 1981-09-21 1983-04-07 Siemens AG, 1000 Berlin und 8000 München X-ray diagnostic device having a pivotable, U-shaped support for the X-ray tube and an image-recording device
EP0129910B1 (en) * 1983-06-27 1987-11-25 Kabushiki Kaisha Toshiba X-ray diagnostic apparatus for allowing stereoscopic visualization on x-ray images of an object under examination
DE3623053A1 (en) * 1986-07-09 1988-01-21 Siemens Ag X-RAY WINDOW EQUIPMENT

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007045740A1 (en) * 2007-09-25 2009-04-23 Siemens Ag X-ray imaging system for use during treatment of e.g. stenosis of coronary artery in cardiology, has X-ray-C-arm movable by control unit that successively receives two inputs with which X-ray-C-arm is brought into user-defined position
DE102007045740B4 (en) * 2007-09-25 2012-05-31 Siemens Ag X-ray imaging system

Also Published As

Publication number Publication date
JPH0910192A (en) 1997-01-14

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