DE3508730A1 - Measuring device for medical purposes - Google Patents

Measuring device for medical purposes

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Publication number
DE3508730A1
DE3508730A1 DE19853508730 DE3508730A DE3508730A1 DE 3508730 A1 DE3508730 A1 DE 3508730A1 DE 19853508730 DE19853508730 DE 19853508730 DE 3508730 A DE3508730 A DE 3508730A DE 3508730 A1 DE3508730 A1 DE 3508730A1
Authority
DE
Germany
Prior art keywords
light beam
patient
plane
contour line
planes
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.)
Withdrawn
Application number
DE19853508730
Other languages
German (de)
Inventor
Günter 8551 Unterleinleiter Schuster
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.)
SCHUSTER GUENTER 8521 LANGENSENDELBACH DE
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 DE19853508730 priority Critical patent/DE3508730A1/en
Publication of DE3508730A1 publication Critical patent/DE3508730A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0062—Arrangements for scanning
    • A61B5/0064—Body surface scanning
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
    • A61B5/1077—Measuring of profiles
    • 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
    • A61B6/08—Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
    • 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
    • A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
    • 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
    • A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
    • A61N2005/105—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using a laser alignment system
    • 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
    • A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
    • A61N2005/1059—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using cameras imaging the patient

Abstract

A device for measuring the contour line of a patient, in particular for radiation therapy treatments, consists of at least one illuminating member for generating a plane of light beams which intersects the patient's body, at least one video camera for measuring the contour line produced on the patient's body by the plane of light beams and for detecting the position of said contour line in space, and a computer for numerical calculation of the contour line.

Description

eßvorrichtung für medizinische Zwecke Die findung betrifft eine Vorrichtung zur Vermessung der Konturlinien eines Patienten für strahlentherapeutische Behandlungen. Eating device for medical purposes The invention relates to a device for measuring the contour lines of a patient for radiotherapy treatments.

Die Datenbasis für die Dosierung der Strahlungsmenge einer Strahlentherapie sind die Daten des Strahlungsfeldes sowie die Außenkontur des Patienten im Behandlungsbereich. In der Strahlentherapie besteht daher die Notwendigkeit, die Konturlinien des Patienten genau zu vermessen. Zugleich ist die Kontrolle der Patient enposit ion und der Patientenaußenkontur einer der schwächsten Punkte in der Strahlentherapie. Eine Bestrahlungsbehandlung kann aus mehreren einzelnen Bestrahlungen bestehen, die sich über einen Zeitraum von mehreren Wochen erstrecken können, In diesem Zeitraum kann sich die Außenkontur mit dem Gewicht ändern, aber sie kann sich auch durch die Art und Weise ändern, wie der Patient bei den verschiedenen Bestrahlungen auf dem Behandlungstisch zu liegen kommt. Sowohl der Patient als auch die Bestrahlungseinrichtung müssen jedoch åedes- mal in dieselbe Position zueinander gebracht werden. Daher werden die notwendigen personenspezifischen Angaben manuell ermittelt und in einem Patientenprotokoll festgehalten. Die Ermittlung der Außenkontur erfolgt noch größtenteils mit mechanischen Geräten. In den letzten Jahren werden hierfür auch vermehrt Computertomographie-Bilder verwendet, diese werden aber durch mechanische Messungen kontrolliert. Zur Kontrolle und Aufzeichnung der laschinendaten gibt es von dem jeweiligen Herstellern Dokumentationssysteme, die sämtlichen Anforderungen genügen.The database for the dosage of the amount of radiation in radiation therapy are the data of the radiation field and the outer contour of the patient in the treatment area. In radiation therapy there is therefore a need to trace the patient's contours to be measured precisely. At the same time, it is possible to control the patient's position and the patient's outer contour one of the weakest points in radiation therapy. A radiation treatment can consist of several individual irradiations over a period of time can extend from several weeks, during this period the outer contour change with weight, but it can also change with the way like the patient on the treatment table during the various treatments come to lie. However, both the patient and the radiation facility must åedes- times are brought into the same position to each other. Therefore the necessary person-specific information is determined manually and in one Patient protocol recorded. The outer contour is still largely determined with mechanical devices. In recent years, more and more computer tomography images have been used for this purpose used, but these are checked by mechanical measurements. For control and recording of the machine data is available from the respective manufacturer documentation systems, which meet all requirements.

Der Erfindung liegt daher die Aufgabe zugrunde, die mechanischen Meßmittel zur Ermittlung der Außenkontur eines Patienten durch eine eßvorrichtung zu ersetzen, die die benötigten Daten in einer praxisgerechten Form ausgibt und durch eine Fortbildung dieser Vießvorrichtung eine leicht verifizierbare Lagerungskontrolle erreicht.The invention is therefore based on the object of the mechanical measuring means replace it with an eating device to determine the outer contour of a patient, which outputs the required data in a practical form and through advanced training This Vießvorrichtung achieved an easily verifiable storage control.

Diese Aufgabe wird nach der Erfindung gelöst durch mindestens einen Beleuchtungskörper zur Erzeugung einer den Körper des Patienten schneidenden Lichtstrahlebene, mindestens einer Video-Kamera zur Vermessung der durch die Lichtstrahlebene auf dem Körper des Patienten erzeugten Konturlinie und zur Erfassung seiner Position im Raum und einem Computer zur zahlenmäßigen Berechnung der Konturlinie.This object is achieved according to the invention by at least one Lighting fixtures for generating a light beam plane that intersects the patient's body, at least one video camera for measuring the through the light beam plane the contour line generated on the patient's body and for detecting its position in space and a computer for numerical calculation of the contour line.

Diese kann dann auch ohne weiteres in Form von Zahlenwerten ausgedruckt oder durch einen Plotter gezeichnet werden.This can then easily be printed out in the form of numerical values or drawn by a plotter.

Vorzugsweise besteht der Beleuchtungskörper wegen der höheren Lichtstrahlschärfe aus einer Laserlichtquelle.The lighting fixture is preferably made because of the higher light beam sharpness from a laser light source.

In Fortbildung der Erfindung wird mindestens eine Laser-Kamera-Kombination verwendet. Hierbei sind Laserlichtquel- le und Video-Kainera definiert und mechanisch fest mit ein ander verbunden.In a further development of the invention, at least one laser-camera combination used. Laser light sources are le and video Kainera defined and mechanically firmly connected to each other.

Gemäß einer zweiten Fortbildung der Erfindung ist mindestens eine Laser-Kamera-Kombination entlang der Körperachse verfahrbar, vorzugsweise motorisch verfahrbar. Hierdurch ist es möglich, praktisch den gesamten Körper des Patienten auch in Längsrichtung zu vermessen.According to a second development of the invention, at least one Laser-camera combination can be moved along the body axis, preferably by motor movable. This makes it possible to use practically the entire body of the patient can also be measured lengthways.

Bei einer dritten Fortbildung der Erfindung besteht die Neßvorrichtung aus mindestens drei, normalerweise den Körper etwa im Querschnitt schneidender Lichtstrahlebenen, von denen eine, die mittlere Lichtstrahlebene vorzugsweise ortsfest und die auf beiden Seiten der vorzugsweise ortsfesten Lichtstrahlebene in Anpassung an die jeweiligen Körperkonturen verschiebbar angeordnet sind und mindestens eine, normalerweise den Körper etwa in Längsrichtung schneidende Lichtstrahlebene, die auf den drei Lichtstrahlebenen senkrecht steht. Hierdurch werden drei Körperebenen des Patienten definiert und damit ein-hoher Grad der Liege nauigkeit bei einer nächsten Behandlung erreicht, Es hat sich als vorteilhaft erwiesen, mehrere I,aserlichtquellen oberhalb der Körpermittelebene, vorzugsweise an Wand und Decke anzuordnen, Dieses ist notwendig, wenn das Bestrahlungsgerät für die Bestrahlung verschwenkbar angeordnet ist.In a third development of the invention, there is the wetting device from at least three light beam planes, usually about the cross-section of the body, of which one, the middle light beam level preferably stationary and the one on both sides of the preferably stationary light beam plane in adaptation to the respective Body contours are slidably arranged and at least one, usually the Body roughly in the longitudinal direction intersecting light beam planes on the three light beam planes stands vertically. This defines three body levels of the patient and so that a high degree of lying accuracy is achieved during the next treatment, It has proven to be advantageous to have several light sources above the median plane of the body, to be arranged preferably on the wall and ceiling, this is necessary if the radiation device is arranged pivotably for the irradiation.

In den Zeichnungen sind Ausführungsbeispiele der Erz in dung wiedergegeben. Es zeigen Fig. 1 eine Meßvorrichtung mit einer Liege, an der zwei Lichtquellen und zwei Video-Kameras angeordnet sind, Fig. 2 ein Behandlungsraum mit einer Lichtstrahlebene, Fig. 3 ein Behandlungsraum mit einer Bestrahlungseinrichtung und beispielsweise vier Lichtstrahlebenen und Fig. 4 i:onitoren, die eine Darstellung der £tuellen Körperposition mit einem eingeblendeten Strahlenfeld wiedergeben.In the drawings, embodiments of the ore are shown in manure. 1 shows a measuring device with a couch on which two light sources and two video cameras are arranged, Fig. 2 a treatment room with a light beam plane, 3 shows a treatment room with an irradiation device and, for example four light beam planes and Fig. 4: monitors, which are a representation of the ualities Show body position with a superimposed radiation field.

In Figur 1 ist eine Vorrichtung 1 zur Vermessung der Konturlinien 21 eines Patienten 2 wiedergegeben. Der Patient 2 liegt auf einer Liege 11. Auf beiden Seiten der Liege 11 sind Laufschienen 12a, 12b angeordnet. An den Laufschienen 12a 12b sind jeweils eine Lichtquelle 31, 32 sowie eine Video-Kamera 41, 42 verfahrbar gelagert. Durch einen Stellmotor 5 können die Lichtquelle-Videokamera-Kombinationen 31, 41 bzw. 32, 42 an den Laufschienen 12a, 12b parallel zum Körper des liegenden Patienten 2 verfahren werden. Die Beleuchtungskörper 31, 32 erzeugen eine den Körper des Patienten 2 etwa senkrecht schneidende Lichtstrahlebene.In Figure 1 is a device 1 for measuring the contour lines 21 of a patient 2 reproduced. The patient 2 lies on a couch 11. On Running rails 12a, 12b are arranged on both sides of the bed 11. On the rails 12a, 12b are each a light source 31, 32 and a video camera 41, 42 movable stored. The light source-video camera combinations can be controlled by a servomotor 5 31, 41 and 32, 42 on the rails 12a, 12b parallel to the body of the lying Patient 2 are proceeded. The lighting fixtures 31, 32 create a body of the patient 2 approximately perpendicular intersecting light beam plane.

Die Schnittlinie 21 ist als eine hell leuchtende Konturlinie sichtbar, die etwa einen Bildwinkel von 240° des Körperumfanges erfaßt . Um die Schnittlinie 21 möglichst scharf zu halten, wird vorzugsweise eine Laserlichtquelle verwendet.The cutting line 21 is visible as a brightly shining contour line, which covers an angle of view of approximately 240 ° of the body circumference. Around the cutting line To keep 21 as sharp as possible, a laser light source is preferably used.

Die Schnitt- oder Konturlinie 21 wird von einem Bildverarbeitungssystem 61 erfaßt, in ein Querschnittsbild gewan- delt und auf dem monitor eines Computers 62, beispielsweise eines rersonalcomputers, dargestellt. Die auf dem Bildschirm des Computers 62 wiedergegebene Linie 621 ist die Konturlinie 21 des Patienten 2. Der Bediener entscheidet, welche Kontur er speichert und/oder welche er auf einem Zeichner bzw. Plotter 63 zeichnen lassen will. Über eine mit dem jeweiligen hersteller des Therapieplanungssystems zu vereinbarende Schnittstelle kann die Konturinformation direkt in das Therapieplanungssystem eingegeben werden.The cutting or contour line 21 is generated by an image processing system 61 recorded, converted into a cross-sectional image delt and on the monitor a computer 62, such as a personal computer. The on Line 621 displayed on the screen of computer 62 is contour line 21 of the patient 2. The operator decides which contour to save and / or which he wants to draw on a draftsman or plotter 63. About one with the respective The interface to be agreed upon by the manufacturer of the therapy planning system can provide the contour information can be entered directly into the therapy planning system.

In Figur 2 ist oben der Grundriß und darunter der senkrechte Schnitt durch einen Raum mit einem Patienten 2 wiedergegeben, der auf einem Tisch 13 liegt. In diesem Fall sind zwei Lichtquellen 33, 34 an den Raumwänden befestigt, die eine Lichtstrahlebene L bilden. Die von der Lichtstrahlebene L auf dem Körper des Patienten 2 erzeugten Konturlinie wird von den Video-Kameras 43, 44 aufgenommen, deren Bilder auch hier einem Computer 62 zugeführt und nach Wunsch durch einen Zeichner 63 gezeichnet werden. Es ist zweckmäßig, die relative Lage von Patient 2 und Lichtstrahlebene L zueinander verändern zu können. Dieses kann durch eine Verschiebung der Lichtquellen 33, 34 an der tand oder durch ein Verfahren des Srehandlungstisches 13 erfolgen. 3s ist auch möglich, den Behandlungstisch 13 drehbar zu gestalten.In Figure 2 is the top plan and below the vertical section reproduced by a room with a patient 2 lying on a table 13. In this case, two light sources 33, 34 are attached to the walls of the room, one Form light beam plane L. That from the light beam plane L on the patient's body 2 generated contour line is recorded by the video cameras 43, 44, their images also fed to a computer 62 here and drawn by a draftsman 63 if desired will. It is useful to check the relative position of patient 2 and the plane of the light beam L to be able to change each other. This can be done by shifting the light sources 33, 34 take place at the stand or by a procedure of the negotiation table 13. 3s it is also possible to make the treatment table 13 rotatable.

In Figur 3 ist wieder oben der Grundriß und darunter der senkrechte Schnitt durch einen zeiten Bestrahlungsraum wiedergegeben. In diesem behandlungsraum befindet sich ein schwenkbares Bestrahlungsgerät 7. Zur räumlichen Kontrolle des Patienten 2 werden vier Lichtstrahlebenen B1, 12, L3 und I4 verwendet. Die Lichtstrahlebenen L1, 12, L3 werden durch mehrere, beispielsweise vier Lichtquellen erzeugt.In FIG. 3, the plan is again at the top and the vertical one below Section through a second irradiation room shown. In this treatment room there is a swiveling irradiation device 7. For spatial control of the Patient 2 uses four light beam planes B1, 12, L3 and I4. The light beam planes L1, 12, L3 are generated by several, for example four, light sources.

Die Lichtstrahlebene L1 wird dementsprechend durch vier Lichtquellen 35a, 35b 35c, 35d erzeugt, von denen die Lichtquellen 35a, 35d an den gegenüberlie- genden Wänden und die Lichtquellen 35b, 35c an der Decke des Behandlungsraumes angebracht sind. Entsprechendes gilt für die Lichtstrahlebenen 12, L3, Durch die vier Lichtquellen pro Lichtstrahlebene ist sichergestellt, daß jede Lichtstrahlebene unabhängig von der Verschwenkstellung des Bestrahlungsgerätes 7 vollständig erhalten bleibt.The light beam plane L1 is formed accordingly by four light sources 35a, 35b 35c, 35d generated, of which the light sources 35a, 35d at the opposite ends Walls and the light sources 35b, 35c attached to the ceiling of the treatment room are. The same applies to the light beam planes 12, L3, through the four light sources per light beam level it is ensured that each light beam level is independent of the pivoting position of the irradiation device 7 is completely retained.

Um die Lage des Patienten 2 genau fixieren zu können, ist es möglich,die Lage der drei Lichtstrahlebenen B1, 12, Iffi den Körperkonturen des Patienten 2 anzupassen. Hierfür sind die beiden Lichtstrahlebenen L1 und L3 gegenüber der vorzugsweise ortsfesten mittleren Ebene I2 verschiebbar ausgebildet. Die Lichtstrahlebene L4 schneidet den Körper in Längsrichtung und steht auf den Lichtstrahlebenen L1, L2, L3 senkrecht.In order to be able to fix the position of the patient 2 precisely, it is possible to use the Position of the three light beam planes B1, 12, Iffi the body contours of the patient 2 adapt. For this purpose, the two light beam planes L1 and L3 are preferred over the fixed middle plane I2 designed to be displaceable. The light beam level L4 cuts the body in the longitudinal direction and stands on the light beam planes L1, L2, L3 vertical.

Ergänzend hierzu ist jedoch darauf hinzuweisen, daß es ohne weiteres möglich ist, entsprechend den gegebenen Notwendigkeften mit mehr oder weniger Lichtstrahlebenen zu arbeiten, die entweder parallel zu den Ebenen ~(1, 12, L3 oder aber auch parallel zu der Ebene L4 liegen können.In addition to this, however, it should be pointed out that it is without further ado is possible, according to the given requirements with more or less light beam planes to work that either parallel to the planes ~ (1, 12, L3 or also parallel can lie to the plane L4.

Es ist auch hier wieder möglich, den Behandlungstisch drehbar zu gestalten.It is also possible here to make the treatment table rotatable.

Es versteht sich, daß auch in diesem Falle vorzugsweise Laserlichtquellen verwendet werden, um eine möglichst scharfe Konturlinie 21 auf dem Körper des Patienten 2 zu erhalten. Zur Aufnahme der Konturlinien sind zwei Video-Kameras 45, 46 vorgesehen.It goes without saying that in this case too, laser light sources are preferred can be used to create as sharp a contour line 21 as possible on the patient's body 2 to get. Two video cameras 45, 46 are provided for recording the contour lines.

In Figur 4 ist der Computer 62 mit zwei Bilddarstellungen auf zwei Nonitoren wiedergegeben. Und zwar zeigt der Bildschirm links den Querschnitt durch den Patienten 2 mit den drei Konturlinien 622, 623, 624, entsprechend den drei Lichtstrahlebenen B 2, ID. Außerdem ist die Lage eines Bestrahlungsfeldes 626 eingeblendet. Auf dem rechten Monitor ist ein Längsschnitt 625, entsprechend der Konturlinie der Lichtstrahlebene I4 durch den Patienten 2 zusammen mit dem Strahlungsfeld 626 wiedergegeben. Eine exakte kontollierbare Positionierung des Patienten 2 und des Strahlungsfeldes 626 ist hierdurch gewährleistet.In Figure 4, the computer 62 is two image representations on two Nonitors reproduced. The screen on the left shows the cross-section through the patient 2 with the three contour lines 622, 623, 624, corresponding to the three light beam planes B 2, ID. Besides, the location is an irradiation field 626 is displayed. On the right monitor is a longitudinal section 625, corresponding to the contour line of FIG Light beam plane I4 reproduced by the patient 2 together with the radiation field 626. An exact, controllable positioning of the patient 2 and the radiation field 626 is guaranteed.

Die Konturlinien 622, 623, 624, 625 gemäß Figur 3 werden von einem Computer 62 erfaßt, in den die Aufnahmedaten der Kameras 45, 46 eingegeben werden, die Positionsdaten eines Motors, wie z.B. des Motors 5, zum Verstellen der Lichtebenen, sowie über eine Schnittstelle 64 die Maschinenparameter der Bestrahlungseinrichtung. Durch den Zugriff auf gespeicherte Konturdaten im Archiv 65 ist in Bezug auf die Positionierung des Patienten 2 ein Sollzu#tand-Istzustand Vergleich der Konturdften durch Überblendung auf die Monitoren oder den Bildschirm des Computers 62 möglich. Aktuelle Positionsdaten können im Archiv dokumentiert werden.The contour lines 622, 623, 624, 625 according to Figure 3 are from a Computer 62 detected, in which the recording data of the cameras 45, 46 are entered, the position data of a motor, e.g. motor 5, for adjusting the light levels, and the machine parameters of the irradiation device via an interface 64. By accessing the stored contour data in the archive 65 is in relation to the Positioning of the patient 2 a target condition-actual condition comparison of the contours possible by fading onto the monitors or the screen of the computer 62. Current position data can be documented in the archive.

Claims (5)

Patentansprüche 1. Vprrichtung zur Vermessung der Konturlinien eines Patienten, insbesondere für strahlentherapeutische Behandlungen, gekennzeichnet durch mindestens einen Beleuchtungskörper (31, 32) zur Erzeugung einer den Körper des Patienten (2) schneidenden Lichtstrahlebene (L), mindestens einer Video-Kamera (41,-42) zur Vermessung der durch die Lichtstrahlebene (L) auf dem Körper des Patienten (2) erzeugten Konturlinie (21) und zur Erfassung seiner Position im Raum und einem Computer (62) zur zahlenmäßigen Berechnung der Konturlinie (621). Claims 1. Vprrichtung for measuring the contour lines of a Patients, especially marked for radiotherapy treatments by at least one lighting fixture (31, 32) for generating the body of the patient (2) intersecting light beam plane (L), at least one video camera (41, -42) to measure the light beam plane (L) on the patient's body (2) generated contour line (21) and to detect its position in space and a Computer (62) for numerical calculation of the contour line (621). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der eleuchtungskörper (31, 32) aus einer Laserlichtquelle besteht.2. Apparatus according to claim 1, characterized in that the lighting body (31, 32) consists of a laser light source. 3. Vorricntung nach anspruch 1 oder 2, dadurch gekennzeichnet, daß mindestens eine Laser-Lamera Kombination (31, 41) vorzugsweise motorisch entlang der Körper achse verfahrbar ist.3. Vorricntung according to claim 1 or 2, characterized in that at least one laser-camera combination (31, 41), preferably by motor the body axis can be moved. 4. Vorrichtung nach Anspruch 1 oder 2, gekennzeichnet durch mindestens drei, normalerweise den Körper etwa in Querrichtung schneidenden Lichtstrahlebenen (t1, 12, L3), von denen die mittlere Lichtstrahlebene (L2) vorzugsweise ortsfest und die auf beiden Seiten der vorzugsweise ortsfesten Lichtstrahlebene (I2) angeordneten beweglichen Lichtstrahlebenen (1,1, 3) in Anpassung an die åeweiligen Körperkonturen des Patienten (2) verschiebbar angeordnet sind und mindes- tens eine, normalerweise den Körper etwa in Längsrichtung schneidende Lichtstrahlebene (L4) die auf den drei Lichtstrahlebenen (B1, L2, ~3) senkrecht steht.4. Apparatus according to claim 1 or 2, characterized by at least three light beam planes, usually cutting the body approximately in the transverse direction (t1, 12, L3), of which the middle light beam plane (L2) is preferably stationary and those arranged on both sides of the preferably stationary light beam plane (I2) movable light beam planes (1,1, 3) in adaptation to the respective body contours of the patient (2) are arranged displaceably and at least least a plane of light rays that normally intersects the body approximately in the longitudinal direction (L4) which is perpendicular to the three light beam planes (B1, L2, ~ 3). 5. Vorrichtung nach Anspruch 4, gekennzeichnet durch mehrere, jeweils in mindestens einer Lichtstrahlebene (L) oberhalb der Körpermittelebene, vorzugsweise an Wand und Decke angeordnete Lichtquellen (35a, 35b, 35c, 35d) zur Erzeugung der Lichtstrahlebene (L)5. Apparatus according to claim 4, characterized by several, each in at least one light beam plane (L) above the body median plane, preferably light sources (35a, 35b, 35c, 35d) arranged on the wall and ceiling for generating the Light beam plane (L)
DE19853508730 1985-03-12 1985-03-12 Measuring device for medical purposes Withdrawn DE3508730A1 (en)

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Cited By (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0222498A2 (en) * 1985-10-04 1987-05-20 Loughborough Consultants Limited Making measurements on a body
EP0480035A1 (en) * 1989-06-30 1992-04-15 Yokogawa Medical Systems, Ltd Radiotherapeutic system
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