WO2005102169A2 - Röntgenstrahler und verfahren zur erzeugung und darstellung von röntgenbildern - Google Patents
Röntgenstrahler und verfahren zur erzeugung und darstellung von röntgenbildern Download PDFInfo
- Publication number
- WO2005102169A2 WO2005102169A2 PCT/EP2005/051764 EP2005051764W WO2005102169A2 WO 2005102169 A2 WO2005102169 A2 WO 2005102169A2 EP 2005051764 W EP2005051764 W EP 2005051764W WO 2005102169 A2 WO2005102169 A2 WO 2005102169A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ray
- exit window
- radiation
- ray source
- radiation exit
- Prior art date
Links
- 238000000034 method Methods 0.000 title description 6
- 230000005855 radiation Effects 0.000 claims abstract description 31
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
-
- 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
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
-
- A61B6/51—
Definitions
- the invention relates to an X-ray source and a method for generating and displaying X-ray images.
- DE 3632878 A1 discloses a device for positioning the head of a patient for taking an X-ray image, in particular a dental overview layer image, by means of which the patient's head is aligned while displaying the recorded silhouette of the patient's head.
- a television camera and a television monitor are used, the stored position being made to coincide with the current position on the television monitor.
- the television camera is adjusted in such a way that its optical axis coincides with the axis of the central beam of the X-ray emitter. This device appears to be independent of the actual X-ray device.
- the object of the invention is to provide information about how the x-ray images relate to the visible surface of the object, even when x-ray images are created from a revolution around an object to be recorded.
- Another object is to provide a method with which, in addition to an X-ray image, further information about the examined object is acquired and finally displayed.
- the x-ray emitter which comprises an x-ray source arranged in a housing, the housing having a radiation exit window and an aperture being provided which limits the x-rays emerging from the radiation exit window to a radiation fan and is arranged at a distance from the radiation exit window.
- a deflection means for light waves in the visible range is arranged in the space between the radiation exit window and the diaphragm, said deflecting means being permeable to X-rays.
- X-ray transmissive is understood here to mean that the x-rays are not attenuated in such a way that they are unsuitable for taking the object to be examined.
- the X-ray emitter With the X-ray emitter according to the invention, it is possible, even in the case of tomography recordings, to take such recordings of the visible surface of the subject. In contrast to cephalometric recordings, with this type of exposure the X-ray source must be very close to the subject are positioned and the space available for accommodating additional optical components, such as are required for taking pictures of the visible surface of the object, is therefore very small. By accommodating these components, including the necessary deflection means, in front of the primary screen, there is no need to intervene in the receiving geometry.
- An advantageous development of the X-ray emitter consists in the fact that the deflecting means is part of the radiation exit window. This makes optimal use of the available space.
- a further advantageous embodiment of the x-ray emitter provides that the deflecting means can be pivoted into the beam path of the x-rays. It is then possible to accommodate the deflecting means in the beam path only if it is desired to record the visible surface of the object to be photographed.
- the deflecting means advantageously consists of a metal-vapor-coated plastic part with low X-ray absorption. The deflecting means can then always remain in the beam path and a swiveling mechanism becomes superfluous. It also proves to be advantageous if the image receiver is aligned with a plane between the beam exit window and the diaphragm with a recording direction transverse and / or oblique to the direction of the beam fan.
- the image receiver can thus be arranged within the housing of the X-ray emitter.
- the recording geometry of the surface detected by means of the light in the visible wavelength range advantageously corresponds essentially to the geometry of the recorded area of the X-ray recording. This considerably simplifies the assignment of the X-ray image and the visible surface of the object to be recorded.
- Fig. 1 shows an X-ray lamp with an integrated video camera in a perspective view with the object to be examined
- FIG. 2 shows a section through the X-ray source from FIG. 1 at the height of the exit of the X-ray fan;
- Fig. 3 shows a radiation exit window with integrated deflecting means
- the x-ray emitter 1 shown in FIG. 1 has a housing 2 in which the actual x-ray source 3 is arranged.
- the X-ray source 3 is like this shielded that X-rays only emerge from a radiation exit window, for this purpose the radiation exit window 4 is designed to be X-ray transparent.
- a deflection means 5 is arranged in the form of a mirror.
- This deflecting means 5 is also transparent to X-rays, but this mirror 5 is essentially opaque to light waves in the optically perceivable region of the wave spectrum.
- the mirror 5 is arranged in such a way that an image detection device 6 for light waves in the visible range is arranged in front of the radiation exit window.
- the camera 6 detects the beam fan 7 deflected via the mirror 5, which is directed towards the object to be examined, here a patient 8, and picks up the surface present there.
- the beam path of the light reflected from the object 8 to the image capturing device 6 is shown as an example using a central beam 9.
- FIG. 2 shows a section through the X-ray emitter 1.
- An X-ray tube 11 is arranged inside the housing, which is shielded from the outside in an X-ray-opaque inner housing 12, with the exception of the beam exit window 4.
- an aperture 13 is provided, which covers the object to be examined Object 8 directed X-ray beam generated by the X-ray tube 11 and emerging from the radiation exit window 4 is limited to a radiation fan 14.
- a picture generated by the rotation of the radiator and an indicated image receiver 15 of the irradiated object 8 around the object 8 to be examined by means of the X-rays shows under the surface of the object 8 structures, for example bones, teeth and fillings.
- the surface of the object to be examined is captured by the image sensor 6, which is arranged outside the beam fan 14 of the X-rays and whose beam path is aligned via the deflection means 5 such that the beam path 7 with its central beam 9 essentially corresponds to the X-ray fan 14 and from which Object 8 maps the same area.
- the image sensor 6 Given a predetermined distance between a focus 16 and the diaphragm 13, there is generally sufficient installation space between the radiation exit window 4 in order to arrange the deflection means 5 and the image receiver 6.
- a minimum distance between the focus and the diaphragm is expedient because of the finite extent of the focus in order to avoid interfering influences of the penumbra on the image receiver 15.
- the deflection means can be designed such that it can be brought into the beam path of the beam fan 14 and out again. This can be done either motorized or manually, for example via a linkage, not shown, which is accessible from outside the housing 2. This will be explained in more detail later.
- FIG. 3 shows a radiation exit window 4, the outside of which is away from the focus is designed in such a way that it represents a deflection means for visible light. This can be, for example, by means of a mirror with a surface design in the form of a sawtooth profile or a fractal lens, wherein a certain focusing can take place.
- the radiation exit window itself is made of X-ray transparent material and the formation of the radiation lengang lying surface affects the quality of the X-rays in the radiation fan at most to an extent that can be accepted for the imaging of the X-ray image. 4, 5 show two different possible embodiments for adjusting an insertable deflection means.
- the deflection means 5 is laterally inserted into the beam path by a spindle drive via the motor 17 along the guides 18, 19.
- a pivoting mechanism is provided for adjusting the deflection means 5, which rotates the deflection means 5 attached to a holder 20 about the axis of rotation 21.
- this twisting can be done either horizontally or vertically.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112005000858T DE112005000858A5 (de) | 2004-04-23 | 2005-04-21 | Röntgenstrahler und verfahren zur erzeugung und darstellung von röntgenbildern |
US11/587,037 US20070297571A1 (en) | 2004-04-23 | 2005-04-21 | X-Ray Emitter and Method for Generating and Representing X-Ray Images |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004020370.9 | 2004-04-23 | ||
DE102004020370A DE102004020370B4 (de) | 2004-04-23 | 2004-04-23 | Röntgenstrahler und Verfahren zur Erzeugung und Darstellung von Röntgenbildern |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2005102169A2 true WO2005102169A2 (de) | 2005-11-03 |
WO2005102169A3 WO2005102169A3 (de) | 2005-12-08 |
Family
ID=34969278
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/051764 WO2005102169A2 (de) | 2004-04-23 | 2005-04-21 | Röntgenstrahler und verfahren zur erzeugung und darstellung von röntgenbildern |
Country Status (3)
Country | Link |
---|---|
US (1) | US20070297571A1 (de) |
DE (1) | DE102004020370B4 (de) |
WO (1) | WO2005102169A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008035412A1 (de) * | 2008-07-29 | 2010-02-04 | Sirona Dental Systems Gmbh | Verfahren zur Erstellung einer dentalen 3D-Röntgenaufnahme und Röntgengerät hierfür |
DE102010040386A1 (de) | 2010-09-08 | 2012-03-08 | Sirona Dental Systems Gmbh | Dentale Röntgeneinrichtung mit Bilderfassungseinheit zur Oberflächenerfassung und Verfahren zur Erzeugung einer Röntgenaufnahme eines Patienten |
JP1525201S (de) * | 2014-05-16 | 2015-06-01 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5704696A (en) * | 1995-10-18 | 1998-01-06 | Toyota Jidosha Kabushiki Kaisha | Stability control device of vehicle distinctive of split-μ road |
US6229873B1 (en) * | 1999-09-30 | 2001-05-08 | Siemens Corporate Research, Inc | Method for aligning an apparatus for superimposing X-ray and video images |
DE10148412A1 (de) * | 2000-10-11 | 2002-05-08 | Instrumentarium Corp | Verfahren und Vorrichtung zur Abbildung des Kopfbereiches eines Patienten |
US6435717B1 (en) * | 1999-09-14 | 2002-08-20 | Koninklijke Phillips Electronics N.V. | X-ray device |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4015126A (en) * | 1975-10-10 | 1977-03-29 | Varo Semiconductor, Inc. | X-ray intensification and minification system |
JPS58133239A (ja) * | 1982-02-02 | 1983-08-08 | 株式会社堀場製作所 | 照射x線領域モニタ−装置 |
DE3239379A1 (de) * | 1982-10-23 | 1984-04-26 | Helmut Fischer GmbH & Co Institut für Elektronik und Meßtechnik, 7032 Sindelfingen | Vorrichtung zum messen der dicke duenner schichten |
DE3632878C2 (de) * | 1986-09-26 | 1994-11-17 | Siemens Ag | Vorrichtung zur Positionierung des Kopfes eines Patienten zur Anfertigung einer Röntgenaufnahme |
US5309496A (en) * | 1992-12-23 | 1994-05-03 | Winsor Robin W | Filmless X-ray apparatus and method of using the same |
US5712890A (en) * | 1994-11-23 | 1998-01-27 | Thermotrex Corp. | Full breast digital mammography device |
DE19625864C2 (de) * | 1996-06-27 | 1999-10-07 | Siemens Ag | Röntgenaufnahmegerät |
US6094152A (en) * | 1998-12-23 | 2000-07-25 | Siemens Medical Systems, Inc. | Algorithm for A/D window control for electronic portal image acquisition in a radiotherapy system |
DE10259696B4 (de) * | 2002-12-18 | 2018-07-05 | Immobiliengesellschaft Helmut Fischer Gmbh & Co. Kg | Vorrichtung zum Messen der Dicke dünner Schichten |
JP4173756B2 (ja) * | 2003-03-25 | 2008-10-29 | 富士フイルム株式会社 | 放射線照射装置の品質管理装置 |
DE102004009897B4 (de) * | 2004-02-26 | 2006-12-07 | Siemens Ag | Tiefenblende für ein Röngtendiagnostikgerät |
-
2004
- 2004-04-23 DE DE102004020370A patent/DE102004020370B4/de not_active Expired - Fee Related
-
2005
- 2005-04-21 US US11/587,037 patent/US20070297571A1/en not_active Abandoned
- 2005-04-21 WO PCT/EP2005/051764 patent/WO2005102169A2/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5704696A (en) * | 1995-10-18 | 1998-01-06 | Toyota Jidosha Kabushiki Kaisha | Stability control device of vehicle distinctive of split-μ road |
US6435717B1 (en) * | 1999-09-14 | 2002-08-20 | Koninklijke Phillips Electronics N.V. | X-ray device |
US6229873B1 (en) * | 1999-09-30 | 2001-05-08 | Siemens Corporate Research, Inc | Method for aligning an apparatus for superimposing X-ray and video images |
DE10148412A1 (de) * | 2000-10-11 | 2002-05-08 | Instrumentarium Corp | Verfahren und Vorrichtung zur Abbildung des Kopfbereiches eines Patienten |
Also Published As
Publication number | Publication date |
---|---|
WO2005102169A3 (de) | 2005-12-08 |
DE102004020370B4 (de) | 2006-11-16 |
DE102004020370A1 (de) | 2005-11-10 |
US20070297571A1 (en) | 2007-12-27 |
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