DE407260C - Rotary screen for shielding the image-disguising secondary rays during X-ray exposures - Google Patents

Rotary screen for shielding the image-disguising secondary rays during X-ray exposures

Info

Publication number
DE407260C
DE407260C DES64064D DES0064064D DE407260C DE 407260 C DE407260 C DE 407260C DE S64064 D DES64064 D DE S64064D DE S0064064 D DES0064064 D DE S0064064D DE 407260 C DE407260 C DE 407260C
Authority
DE
Germany
Prior art keywords
strips
rotary screen
shielding
image
ray
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
Application number
DES64064D
Other languages
German (de)
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 and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
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
Priority claimed from DES62710D external-priority patent/DE402870C/en
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to DES64064D priority Critical patent/DE407260C/en
Priority to CH109721D priority patent/CH109721A/en
Priority to AT101558D priority patent/AT101558B/en
Priority to FR580416D priority patent/FR580416A/en
Application granted granted Critical
Publication of DE407260C publication Critical patent/DE407260C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21KTECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/02Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
    • G21K1/025Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using multiple collimators, e.g. Bucky screens; other devices for eliminating undesired or dispersed radiation

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Description

Drehblende zur Abschirmung der bildvers.hleiernden Sekundärstrahlen bei Röntgenaufnahmen. Das Hauptpatent betrifft eine Drehblende zur Abschirmung der bei Röntgenaufnahmen in dem durchleuchteten Körper entstehenden Sekundärstrahlen. Diese Blende ist aus keilförmigen Teilen zusammengesetzt, die ihrerseits aus nebeneinandergepackten Streifen aus für Röntgenstrahlen durchlässigem und undurchlässigem Stoff bestehen. In Abb. i ist ein Grundriß einer Ausführungsform einer derartigen Blende dargestellt. Nach dein Hauptpatent sollen nun die einzelnen Streifen der keilförmigen Blendenteile senkrecht zur Blendenebene stehen. Hierbei ergibt sich der Nachteil, daß die nach außen zu gelegenen kürzeren Streifenteile nicht genau radial. gegen den Röhrenfokus gerichtet sind und deshalb etwas breitere Schatten liefern, als ihrer Stärke zukommt.Rotary screen for shielding the secondary rays that hide the image for x-rays. The main patent relates to a rotary screen for shielding the secondary rays generated in x-rays in the x-rayed body. This screen is composed of wedge-shaped parts, which in turn are packed side by side Strips are made of fabric that is transparent and opaque to X-rays. In Fig. I is a plan view of an embodiment of such a screen is shown. According to your main patent, the individual strips of the wedge-shaped panel parts should now be stand perpendicular to the diaphragm plane. This has the disadvantage that the after Shorter strip parts to the outside are not exactly radial. against the tube focus are directed and therefore provide somewhat broader shadows than their strength is appropriate.

,Gemäß der Erfindung wird dieser Nachteil dadurch vermieden, daß sämtliche Streifen der einzelnen Blendenkeile genau in durch den Röhrenfokus gehenden Ebenen angeordnet sind. Diese Richtung ergibt sich anschaulich aus Abb. 2, die einen Schnitt nach der Linie I-II in Abb. i zeigt. Diese Abb. 2 läßt die Richtung der einzelnen Gitterteile zu dem Fokus f der Röntgenröhre erkennen. Die Art der Herstellung der mit derart geneigten Teilen versehenen Keile zeigt Abb. 3 im Verein mit Abb. 2. Die sämtlichen..Stäbchen und Bänder aus fürRöntgenstrahlen durchlässigem oder undurchlässigem Stoff werden mit einem Abb. 2 entsprechenden Querschnitt zu dem in Abb. 3 dargestellten streifenförmigen Körper zusammengesetzt. An der Längsseite s dieses Körpers stehen die einzelnen Teile senkrecht zur Zeichenebene, an der anderen Seite cc entsprechend schräg geneigt. Aus dem so zusammengesetzten streifenförmigen Körper werden in der angedeuteten Weise die einzelnen keilförmigen Stücke k der Blende herausgeschnitten und dann in der in Abb. i gezeigten Weise zusammengesetzt. Die sämtlichen Einzelteile der Blendenkeile sind dann in der erforderlichen Weise auf den Fokus der Röntgenröhre gerichtet.According to the invention, this disadvantage is avoided in that all Stripes of the individual aperture wedges exactly in planes going through the tube focus are arranged. This direction can be seen clearly from Fig. 2, which shows a section according to the line I-II in Fig. i shows. This Fig. 2 leaves the direction of each Lattice parts to the Detect the focus f of the X-ray tube. The type of Production of the wedges provided with such inclined parts is shown in Fig. 3 in association with Fig. 2. All of the rods and ribbons made of X-ray transparent or impermeable material are shown with a cross-section corresponding to Fig. 2 composed of the strip-shaped body shown in Fig. 3. On the long side The individual parts of this body are perpendicular to the plane of the drawing, on the other Side cc inclined accordingly. From the so composed strip-shaped Bodies are the individual wedge-shaped pieces k the in the manner indicated Cut out the cover and then put it together as shown in Fig. I. All the individual parts of the diaphragm wedges are then in the required manner directed to the focus of the X-ray tube.

Abb. q. veranschaulicht ein weiteres Beispiel der Drehblende. Hier liegen die Streifen der Keile sehnenartig. Diese können auch hier aus einem gemäß Abb.3 geschichteten Körper herausgeschnitten werden. Die Spitze der Keile k" würde dann auf der s-Kante liegen, wie in Abb. 3 links angedeutet ist.Fig.q. Fig. 11 illustrates another example of the rotating bezel. here the strips of the wedges lie like tendons. This can also be done here according to Fig.3 layered body to be cut out. The tip of the wedges k "would then lie on the s-edge, as indicated on the left in Fig. 3.

Claims (3)

PATENTANSPRÜCHE: i. Drehblende zur Abschirmung der bildverschleiernden Sekundärstrahlen bei Röntgenaufnahmen in Form einer aus einander gleichen sektorförmigen Teilen zusammengesetzten Kreisscheibe nach Patent 40287o, dadurch gekennzeichnet, daß die die einzelnen Teile zusammensetzenden Streifen aus für Röntgenstrahlen durchlässigem und undurchlässigem Stoff sämtlich derart angeordnet sind, daß ihre Ebenen bei idealer Verlängerung durch den Fokus der Röntgenröhre gehen. PATENT CLAIMS: i. Rotary screen for shielding the image-obscuring secondary rays in X-ray recordings in the form of a circular disk composed of identical sector-shaped parts according to Patent 40287o, characterized in that the strips of material which are transparent and impermeable to X-rays and which make up the individual parts are all arranged in such a way that their planes are ideally elongated go through the focus of the x-ray tube. 2. Drehblende nach Anspruch i, dadurch gekennzeichnet, daß die Streifen jeweils parallel zu einer radialen Seite der Keile angeordnet sind. 2. Rotary screen according to claim i, characterized in that the strips are each parallel to a radial side of the wedges are arranged. 3. Verfahren zur Herstellung der Blende gemäß Anspruch i und 2, dadurch gekennzeichnet, daß die Streifen aus für Röntgenstrahlen durchlässigem und undurchlässigem Stoff zunächst zu einem langgestreckten Körper derart zusammengeschichtet werden, daß sie sämtlich in Ebenen liegen, die durch den Fokus der Röntgenröhre gehen, der über der einen Längskante des Körpers gelegen angenommen wird, und daß darauf aus diesem Körper die fächer- oder keilförmigen Teile derart ausgeschnitten und dann zu der Blende zusammengesetzt werden, daß die eine Seite der Keile der Längskante des Körpers mit den senkrecht angeordneten Streifen entspricht. 3. A method for producing the diaphragm according to claim i and 2, characterized in that the strips of X-ray permeable and impermeable material are first layered together to form an elongated body in such a way that they all lie in planes which go through the focus of the X-ray tube, which is assumed to be located above one longitudinal edge of the body, and that the fan-shaped or wedge-shaped parts are then cut out of this body and then assembled to form the screen that one side of the wedges corresponds to the longitudinal edge of the body with the perpendicularly arranged strips.
DES64064D 1923-04-19 1923-10-15 Rotary screen for shielding the image-disguising secondary rays during X-ray exposures Expired DE407260C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DES64064D DE407260C (en) 1923-04-19 1923-10-15 Rotary screen for shielding the image-disguising secondary rays during X-ray exposures
CH109721D CH109721A (en) 1923-04-19 1924-04-02 Rotary screen for shielding the image-obscuring secondary rays in X-ray images.
AT101558D AT101558B (en) 1923-04-19 1924-04-11 Rotary screen for shielding the image-obscuring secondary rays in X-ray images.
FR580416D FR580416A (en) 1923-04-19 1924-04-16 rotating screen to intercept secondary rays in radiographs which obscure the image

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES62710D DE402870C (en) 1923-04-19 1923-04-19 Rotary screen for shielding the image-disguising secondary rays during X-ray exposures
DES64064D DE407260C (en) 1923-04-19 1923-10-15 Rotary screen for shielding the image-disguising secondary rays during X-ray exposures

Publications (1)

Publication Number Publication Date
DE407260C true DE407260C (en) 1924-12-22

Family

ID=25995677

Family Applications (1)

Application Number Title Priority Date Filing Date
DES64064D Expired DE407260C (en) 1923-04-19 1923-10-15 Rotary screen for shielding the image-disguising secondary rays during X-ray exposures

Country Status (1)

Country Link
DE (1) DE407260C (en)

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