WO2004028368A1 - Bestrahlungsbildaufnahmeeinrichtung - Google Patents
Bestrahlungsbildaufnahmeeinrichtung Download PDFInfo
- Publication number
- WO2004028368A1 WO2004028368A1 PCT/DE2003/003138 DE0303138W WO2004028368A1 WO 2004028368 A1 WO2004028368 A1 WO 2004028368A1 DE 0303138 W DE0303138 W DE 0303138W WO 2004028368 A1 WO2004028368 A1 WO 2004028368A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radiation
- image
- image recording
- recording device
- images
- Prior art date
Links
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
- A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4208—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
- A61B6/4225—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector using image intensifiers
-
- 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
- A61B6/4464—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 mounted to ceiling
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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
- A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
- A61B6/5211—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data
- A61B6/5229—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image
- A61B6/5235—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT
- A61B6/5241—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT combining overlapping images of the same imaging modality, e.g. by stitching
Definitions
- the invention relates to a radiation image recording device with a radiation source and a radiation receiver, which can be moved vertically for positioning with respect to a standing patient, and with an image processing device for generating an outputable image on the basis of the recorded image data.
- the patient is scanned standing with the radiation image recording device, that is, a conventional x-ray device comprising an x-ray tube and an x-ray receiver.
- the receiver usually has a 40 x 120 cm film cassette, provided this size is sufficient to image the entire examination area.
- the invention is therefore based on the problem of specifying a radiation image recording device which provides a remedy here.
- a digital radiation receiver that is to say a known semiconductor flat detector
- the radiation source and the radiation receiver are recorded in successive image recordings.
- Positions can be moved in a controlled manner via a control device, in each of which a radiation image is recorded, the positions being defined such that the recorded radiation images cover the examination area, and the image processing device for generating an overall image representing the entire examination area based on the image data of the individual Radiation images is formed.
- the invention advantageously opens the step-by-step scanning of the examination area, with each being defined
- Image recording position a radiation image is recorded.
- a central control device controls the radiation source and the radiation receiver into the respectively defined position. After the picture has been taken, it is read out of the radiation receiver and transferred to the image processing device. If the entire examination area has been scanned while taking a plurality of images, the computerized generation of an overall image representing the entire examination region takes place in the image processing device on the basis of the data of the individual radiation images. This overall picture can then be output and the diagnosis made.
- the radiation image recording device according to the invention has a number of advantages. On the one hand, the generation of the overall image is very quick, since the image processing device can, with sufficient design, calculate the overall image immediately after the last single image has been created.
- the image processing device advantageously generates a single overall image that can be output immediately after it has been created, so it no longer has to be cumbersome to either develop time-consuming or additionally glue individual images together after development, etc.
- this overall picture can be easily archived in a suitable patient data management, which can be done much easier by storing it on a suitable data carrier than the usual archiving of the image plates.
- a conventional torax or skeleton imaging device can be used that does not have to be modified too much for this, except primarily with regard to the image processing device, which is accordingly must be designed.
- the radiation image recording device permits the quick and uncomplicated and immediately meaningful generation of an overall image of a large examination area which is significantly larger than the active area of the radiation receiver.
- the control device for the automatic determination of the respective positions on the basis of the height of the examination area and the height of the active surface of the radiation detector.
- the doctor determines which examination area he wants to scan. For example, the left leg should be examined from the heel to the femur. He enters these parameters of the patient into the control device, which then uses the active area of the radiation detector known to her, that is to say the detector area that is actively used for image acquisition, where X-rays are converted into image data, to calculate the position into which the Radiation source and the radiation receiver must be moved automatically.
- This procedure is possible both when the active area of the radiation detector is not variable, and also in the case of detectors where the active area is variable, ie where the doctor can select a specific detector area which he would like to use for the actual image acquisition.
- this area is known to the control device, and hence the height of the area in relation to the vertical movement, so that the relevant recording positions can be automatically determined and automatically approached without further ado.
- the radiation source and the radiation receiver are expediently moved synchronously, i.e. they are moved from one position to the next at the same time.
- an asynchronous motion mode is also required, in which first one component is moved and then the other component.
- the movement is always symmetrical, i.e. always by the same distance, so that the radiation source and the radiation receiver always face each other in a horizontal plane in the type of exposure in which the standing patient is scanned, ie they are always in the same plane.
- the movement from one recording position to the next and the image recording in the respective recording position is advantageously carried out automatically. So if the image acquisition is started After determining the individual exposure positions, the control device moves the radiation source and the radiation receiver, which is, for example, a 40 x 40 cm image receiver, from a starting position into which both components are always moved as the basic position to the first pickup position. Once this has been achieved, the image is recorded automatically, and after reading out the recorded individual image, both are moved to the next recording position, where the image is taken again, etc. This process continues until the last image has been taken, after which both components, for example, again be moved to the starting position. At the same time, the image processing device immediately begins processing the individual image data to create the overall image. This also expediently takes place automatically, so that the doctor actually does not have to do anything until the final image is output from the actuation of the start button.
- the radiation source and the radiation receiver which is, for example, a 40 x 40 cm image receiver
- the image processing device is designed in such a way that, based on the individual images, it forms an overall image that shows the entire examination area exactly for diagnostic purposes and shows it exactly resolved. It must therefore be able to position and connect two adjacent images of the examination area with respect to one another in such a way that there are no edges or offsets and the examination area, for example the lower leg, is precisely depicted with regard to the recorded structure.
- the positions in which the pictures are taken are defined in such a way that two images taken one after the other overlap at the edges.
- the image processing device for example by using suitable edge detection algorithms or similar algorithms that detect these similarities in the images, determine the exact alignment of the two images with respect to one another and this act overlay.
- the overlay should not be too large, starting from a 40 x 40 cm image receiver, an overlay of, for example, 3-5 cm is conceivable.
- Sufficient structural similarities already exist in such a relatively narrow area, which enable the image processing device to precisely align and overlap both images.
- An alternative embodiment of the invention provides that the positions are defined in such a way that two images taken in succession essentially adjoin one another.
- the overlap is only a few millimeters here.
- the generation of the overall image is based primarily on the fact that, on the one hand, the radiation source and radiation receiver can be moved exactly into the predefined positions, and on the other hand that the patient does not move in the process. Both images are connected directly to one another, so to speak.
- the image processing device can carry out an analysis of the edge area with regard to matching structures, provided that such occur in the overlap area which is only a few millimeters.
- the overall image can either be hard copy in a possibly reduced format, for example written on an image plate, can be exposed on a film or can be output on a monitor. Of course, the output on the monitor is mandatory for quick diagnosis.
- the overall picture on the Monitor in the recording format or in a larger format. Since the monitor is of course smaller than the recorded examination area, the significantly larger overall image is viewed by simply moving the overall image on the monitor, which is possible by scrolling. In addition, there is of course also the possibility to have the overall picture enlarged compared to the actual recording format in order to show any structures even larger.
- the radiation source and the radiation receiver are expediently arranged on optionally telescopic ceiling or floor stands which enable simple automatic displacement.
- a suitable mechanism is provided for this purpose, which in particular enables both components to be precisely positioned in the respectively defined recording position in order to be able to record the individual images, as previously defined via the control device.
- the radiation receiver i.e. the solid-state detector
- the active area is always a certain distance above the ground.
- the active area is always a certain distance above the ground.
- the heel bone is imaged.
- a pedestal with holding devices for the patient is provided for the patient. This pedestal, on which the patient has to stand, compensates for this design-related offset, so that the heel bone must be included without further ado.
- the holding devices are provided so that the patient stands firm and immobile, since, of course, he must not change his position during the duration of the recording of the several individual images.
- the holding devices can be designed as handles that are variable in height, so that different lent tall people optimally. It is also conceivable to design the holding means as corresponding straps or the like, with which the patient is strapped in position.
- a radiation-transparent plate is provided on the platform on the side facing the radiation receiver, which plate prevents the patient from coming into contact with the radiation receiver.
- Fig. 1 is a schematic diagram of a radiation image recording device according to the invention.
- FIG. 2 shows a schematic diagram to show the “fusion” of three individual images to produce an overall image.
- a radiation image recording 1 consisting of a radiation source 2, here an X-ray emitter, and a radiation receiver 3, here a digital solid-state image detector.
- the radiation source 2 is arranged on a tripod 4 with a telescopic rod 5, so it can be moved vertically as shown by the double arrow A.
- a pedestal 7 is provided near the radiation receiver, on which the patient P has to stand to receive it.
- holding means 8 are arranged on both sides in the form of vertically movable handles (see double arrow C) which the patient can hold on to because he has to stand very still to take the picture.
- a radiation-transparent plate 9 on the rear is provided, which is arranged for protection reasons and prevents the patient from touching the radiation receiver 3.
- the radiation image recording device further comprises a central control device 10 to which an image processing device 11 and a monitor 12 are assigned.
- the control device 10 serves to precisely control the vertical displacement of the radiation source 2 and of the radiation receiver 3, so that different shooting positions can be approached, and to control the image recording operation.
- the image processing device 11 is used to calculate an overall image from the individual images recorded, which is then recorded on the monitor 12.
- the right leg of the patient P is to be taken up and output to the doctor as an overall picture.
- the doctor gives the control device 10 via a suitable input means, not shown here
- the control device 10 calculates the positions of the radiation source 2 and the radiation receiver 3, into which they have to be moved in order to take individual images of the examination area, which images it as a whole.
- the control device 10 can be done by the control device 10 without teres possible, because on the one hand she knows and can localize the examination area precisely on the basis of the input of the corresponding data via the doctor, on the other hand she knows the active area of the radiation receiver 3, i.e. the area in which image data that actually images the examination area is actually generated , From this, the respective exposure positions into which the radiation source 2 and the radiation receiver 3 have to be brought can be readily determined in order to image the examination area.
- three recording positions are provided. Starting from a lowest recording position I, into which the control device moves the radiation source and the radiation receiver, starting from a starting position (not shown), there is a first image recording, which shows the patient's leg from the heel bone to, for example, below the knee.
- the image data of this first image are read out and sent to the image processing device 11.
- the radiation source 2 and radiation receiver 3 are then moved into the receiving position II, the positions being determined exactly using suitable position detection means.
- a second single image is taken, which shows the patient's leg below the knee to the middle of the thigh.
- the third exposure position III After the acquisition and readout of the image data has taken place, there is a third shift to the third exposure position III, where after reaching a third image acquisition takes place, which shows the examination area from the middle of the thigh to the hip. If this image is also recorded, it is read out and sent to the image processing device 11, in which three individual images are then present. On the basis of these three individual images, an overall image is now generated arithmetically and is then output on the monitor 12.
- the recording positions are defined in such a way that, for example, two individual images taken one after the other overlap a certain piece.
- the overlap can be 3 or 5 cm, for example.
- the image processing device 11 can use suitable algorithms to detect congruent areas in two images taken one after the other and thus can position the images exactly with respect to one, so that a uniform overall image without edges and brightness differences etc. results.
- the recording positions can also be selected such that the images are virtually seamlessly adjoining one another, with the image processing device 11 then using suitable algorithms in two successively recorded images to look for structures that continue, in order to be able to align both images with respect to one another.
- the entire operation is carried out automatically via the control device 10. If the latter is familiar with the parameters mentioned at the outset with regard to the examination area, the recording positions are determined automatically, depending on which image processing mode (i.e. overlapping edges or immediately after) is selected. what e.g. the doctor can choose for himself. If all of this has been defined, the doctor only has to press the start button on the control device 10, after which the entire
- the doctor to define the examination area by moving the radiation detector into a first position and into a second position, which are quasi the positions for the first and for the last Define captured image.
- the examination area is virtually defined directly in the coordinate system of the facial expression of the radiation receiver. Starting from these two positions you can then the respective intermediate exposure positions are determined. It is of course possible that the total length of the examination area is not exactly a multiple of the height of the active surface of the receiver, taking into account any overlaps. For this purpose, it is conceivable to irradiate only a partial area by means of appropriate diaphragms on the radiation source during the last exposure, etc. Different variants are conceivable as to how the position and the length of the examination area can be defined.
- FIG. 2 now shows, in the form of a schematic diagram, how an overall image is generated using three individual images.
- three individual images B1, B2 and B3 were taken.
- the single picture B1 was taken, which shows the largest part of the lower leg to just below the knee.
- the single image B2 is recorded, which now shows the knee with part of the thigh.
- single image B3 is taken, which shows the rest of the thigh with the femur neck.
- the overall image generated in this way is now expediently output on the monitor 12. Since its image area is smaller than the overall image G, which expediently shows the examination area 1: 1, only part of the overall image G can be displayed on the monitor 12. Using a suitable scroll device, the image can now be easily moved on the monitor 12, as shown by the double arrow D.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10393046T DE10393046D2 (de) | 2002-09-25 | 2003-09-22 | Bestrahlungsbildaufnahmeeinrichtung |
JP2004538739A JP2006500126A (ja) | 2002-09-25 | 2003-09-22 | 放射線画像撮影装置 |
AU2003273742A AU2003273742A1 (en) | 2002-09-25 | 2003-09-22 | Radiation image recording device |
US10/527,434 US7142632B2 (en) | 2002-09-25 | 2003-09-22 | Radiation image recording device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10244609.1 | 2002-09-25 | ||
DE10244609A DE10244609A1 (de) | 2002-09-25 | 2002-09-25 | Bestrahlungsbildaufnahmeeinrichtung |
Publications (1)
Publication Number | Publication Date |
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WO2004028368A1 true WO2004028368A1 (de) | 2004-04-08 |
Family
ID=32009896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/003138 WO2004028368A1 (de) | 2002-09-25 | 2003-09-22 | Bestrahlungsbildaufnahmeeinrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US7142632B2 (de) |
JP (1) | JP2006500126A (de) |
CN (1) | CN1326494C (de) |
AU (1) | AU2003273742A1 (de) |
DE (2) | DE10244609A1 (de) |
WO (1) | WO2004028368A1 (de) |
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2002
- 2002-09-25 DE DE10244609A patent/DE10244609A1/de not_active Withdrawn
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2003
- 2003-09-22 AU AU2003273742A patent/AU2003273742A1/en not_active Abandoned
- 2003-09-22 WO PCT/DE2003/003138 patent/WO2004028368A1/de active Application Filing
- 2003-09-22 JP JP2004538739A patent/JP2006500126A/ja active Pending
- 2003-09-22 US US10/527,434 patent/US7142632B2/en not_active Expired - Lifetime
- 2003-09-22 DE DE10393046T patent/DE10393046D2/de not_active Expired - Fee Related
- 2003-09-22 CN CNB038227169A patent/CN1326494C/zh not_active Expired - Lifetime
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007059803A1 (de) * | 2005-11-24 | 2007-05-31 | Swissray International Inc. | Vorrichtung zur positionierung von aufrecht stehenden personen für die erstellung von röntgenaufnahmen |
US7742570B2 (en) | 2008-03-31 | 2010-06-22 | Fujifilm Corporation | X-ray radiographic apparatus and method |
WO2014058255A1 (en) | 2012-10-11 | 2014-04-17 | Samsung Electronics Co., Ltd. | X-ray apparatus and method of obtaining x-ray image |
US9861329B2 (en) | 2012-10-11 | 2018-01-09 | Samsung Electronics Co., Ltd. | X-ray apparatus and method of capturing X-ray image |
EP2906932B1 (de) * | 2012-10-11 | 2019-12-04 | Samsung Electronics Co., Ltd. | Röntgenstrahlenvorrichtung und verfahren zum abrufen von röntgenbildern |
Also Published As
Publication number | Publication date |
---|---|
US20050279942A1 (en) | 2005-12-22 |
JP2006500126A (ja) | 2006-01-05 |
CN1326494C (zh) | 2007-07-18 |
AU2003273742A1 (en) | 2004-04-19 |
US7142632B2 (en) | 2006-11-28 |
CN1684629A (zh) | 2005-10-19 |
DE10244609A1 (de) | 2004-04-15 |
DE10393046D2 (de) | 2005-05-12 |
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