CN1915171A - X-ray CT system - Google Patents
X-ray CT system Download PDFInfo
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- CN1915171A CN1915171A CN 200510092685 CN200510092685A CN1915171A CN 1915171 A CN1915171 A CN 1915171A CN 200510092685 CN200510092685 CN 200510092685 CN 200510092685 A CN200510092685 A CN 200510092685A CN 1915171 A CN1915171 A CN 1915171A
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Abstract
A -ray CT system features that the installation position of the X-ray photographic platform on a flatbed can be easily determined. The said X-ray photographic platform can be moved to a position which is aligned with the horizontal and vertical markers of the horizontal and vertical laser beams on examine bed, and the position is just a correct one.
Description
Technical field
The present invention relates to have the X ray CT system of X-ray radiography workbench, above-mentioned X-ray radiography workbench is used for the person under inspection is sent to imaging region.
Background technology
Along with the fast development of X ray CT system in recent years, there is increasing X ray CT system to be mounted.In this case, reduce the X ray CT system loading and the number of (loadinginstallation) required step is installed not only there is significance in their manufacturer, and also be favourable for the user.
In the X ray CT system, carry out the scanning stand of subject imaging and the person under inspection be sent to the X-ray radiography workbench of stand middle body manufactured as discrete parts.When mounted, those parts are placed on the floor as the associating parts.In the X ray CT system, be imaged near the pre-position that is positioned at the scanning stand central authorities and carry out.On the other hand, the X-ray radiography workbench need accurately be sent to person under inspection's imaging moiety precalculated position (for example, referring to non-patent literature 1).
When the X-ray radiography workbench is installed before stand, error occurs in order to prevent the position that the person under inspection is sent to, workbench need accurately be placed with respect to the stand part.Because need very high precision during the location, so this location of execution such as alignment bar (alignment bar) of reference length are arranged by staff's use.
[non-patent literature 1]
Tetuso?OKABE，“Radiodiagnostic?Devices?Engineering”，Ishiyaku?Publishers，Inc.，October?1，1997，P.165.
Summary of the invention
[problem that the present invention solves]
But according to the above-mentioned background technology, the location of X-ray radiography workbench is difficulty quite, and needs a large amount of man-hours.More specifically, be exactly to be a plurality of heavy objects of long measure as the alignment bar of reference bar itself with rice, therefore portable very poor.In addition, be necessary after from platform trailer, being discharged to the X-ray radiography workbench on the floor, to carry out the location of using alignment bar.
Especially, nearly 500 kilogram weights of X-ray radiography workbench are so after it is discharged on the floor, under the situation of not using platform trailer, only depend on staff's strength to be difficult to travelling table.Therefore, after the X-ray radiography workbench was discharged on the floor, it was quite difficult something that the staff adjusts to position to be installed with it, therefore needs a large amount of man-hours.
Consider above-mentioned viewpoint, can determine easily when workbench is placed on the platform trailer how the X ray CT system of X-ray radiography workbench installation site develops quite important in the future.
The present invention is used for solving the problems referred to above of background technology, and an object of the present invention is to provide a kind of X ray CT system that can easily determine X-ray radiography workbench installation site when the X-ray radiography workbench is placed on the platform trailer.
[method of dealing with problems]
In order to address the above problem and finish above-mentioned purpose, first aspect of the present invention provides a kind of X ray CT system, this system comprises: the scanning stand, have X-ray tube and X-ray detector and be installed in rotating base on it, this rotating base rotates to gather the projection information about the person under inspection around the person under inspection; X ray workbench, next-door neighbour's scanning stand are placed on the floor and the person under inspection are sent to the center of rotation; And operating console, being used for control transmits and information gathering, wherein scan stand and have the positioning lamp part that is fixed on the rotating base, be used to illuminate the part of X-ray radiography workbench, and the X-ray radiography workbench has a plurality of labellings, when the X-ray radiography workbench was placed on the ideal position on floor, these labellings were consistent with lighting position.
In this first aspect, the scanning stand positioning lamp that the part of X-ray radiography workbench is fixed on the rotating base partly illuminates, a plurality of labellings of X-ray radiography workbench partially overlap with being illuminated, and the X-ray radiography workbench is installed in the ideal position on the floor.
In conjunction with above-mentioned first aspect, a second aspect of the present invention provides a kind of X ray CT system, wherein positioning lamp partly comprises and is used to launch the perpendicular light source of normal beam and the horizontal light source of emission level light beam, above-mentioned normal beam is fan-shaped expansion on direction of transfer, horizontal light beam with the orthogonal direction of direction of transfer on fan-shaped expansion.
In this second aspect,, obtain the X-ray radiography workbench in desired position forward and backward, the left and right position by vertical and horizontal light beam.
In conjunction with above-mentioned second aspect, a third aspect of the present invention provides a kind of X ray CT system, and wherein perpendicular light source and horizontal light source are LASER Light Sources.
In this third aspect, the thin vertical and horizontal light beam that the vertical and horizontal light emitted of use LASER Light Source has very strong directivity.
In conjunction with above-mentioned second and the third aspect, a fourth aspect of the present invention provides a kind of X ray CT system, and wherein positioning lamp partly comprises the light source gripper shoe, is used for perpendicular light source and horizontal light source are fixed on rotating base.
In conjunction with above-mentioned fourth aspect, a fifth aspect of the present invention provides a kind of X ray CT system, and wherein rotating base comprises and is positioned at two adjacent supports holes that equate the place apart from center position.
In a fifth aspect of the present invention, the light source gripper shoe is assembled in the supported hole that forms in the rotating base.
In conjunction with above-mentioned the 5th aspect, a sixth aspect of the present invention provides a kind of X ray CT system, and wherein the light source gripper shoe is being stated from perpendicular light source and horizontal light source on it apart from two equidistant positions of supported hole.
In a sixth aspect of the present invention, the light source gripper shoe is transformed into light beam face by rotating rotating base rotating shaft to normal beam, and horizontal light beam is transformed into and the orthogonal light beam face of normal beam.
In conjunction with the above-mentioned the 5th or the 6th aspect, a seventh aspect of the present invention provides a kind of X ray CT system, and wherein the light source gripper shoe is removably mounted in the supported hole.
In a seventh aspect of the present invention, the light source gripper shoe only is connected on the rotating base when needed.
In conjunction with above-mentioned first to the 7th aspect, a eighth aspect of the present invention provides a kind of X ray CT system, and wherein positioning lamp partly comprises level indicator.
In a eighth aspect of the present invention, make partly maintenance level of positioning lamp by level indicator.
In conjunction with the either side in above-mentioned the 4th to the 7th aspect, the 9th aspect of the present invention provides a kind of X ray CT system, and wherein level indicator is placed on the light source gripper shoe.
In a ninth aspect of the present invention, level indicator makes perpendicular light source and horizontal light source maintenance level.
In conjunction with any aspect in above-mentioned first to the 9th aspect, a tenth aspect of the present invention provides a kind of X ray CT system, and wherein labelling is stamped on the examinating couch of X-ray radiography workbench.
In conjunction with above-mentioned the tenth aspect, the 11 aspect of the present invention provides a kind of X ray CT system, and wherein examinating couch has the rectangular flat surface that long edge direction of transfer extends, and carries out impression at the center position of two minor faces that constitute planar surface.
In a eleventh aspect of the present invention, impression has been set up the lateral attitude with respect to the X-ray radiography workbench of direction of transfer.
In conjunction with a eleventh aspect of the present invention, a twelveth aspect of the present invention provides a kind of X ray CT system, wherein is stamped on two long limits that constitute planar surface and carries out, and the impression position is about the axial symmetry by two centers.
In a twelveth aspect of the present invention, impression has been set up the X-ray radiography operating position that is positioned on the direction of transfer.
In conjunction with the either side in above-mentioned the first to the 12 aspect, a thirteenth aspect of the present invention provides a kind of X ray CT system, and wherein the X-ray radiography workbench comprises the platform trailer of the removable type that has wheel.
In a thirteenth aspect of the present invention, the X-ray radiography workbench can manually move easily.
In conjunction with any aspect in above-mentioned the first to the 13 aspect, a fourteenth aspect of the present invention provides a kind of X ray CT system, wherein operating console comprises the examinating couch height measuring device, the examinating couch projection information that said apparatus is gathered according to the scanning stand, the examinating couch of measured X radiography workbench is apart from the height on ground.
In a fourteenth aspect of the present invention, by the examinating couch height measuring device of operating console, examinating couch is measured to reduce the error of X-ray radiography workbench installation site apart from the height on ground.
In conjunction with above-mentioned the 14 aspect, a fifteenth aspect of the present invention provides a kind of X ray CT system, wherein the examinating couch height measuring device is measured according to the tomographic image information and executing of examinating couch, this faultage image information according to previously mentioned a plurality of projection information segments by image reconstruction.
In a fifteenth aspect of the present invention, the examinating couch height measuring device is measured according to the tomographic image information and executing height of examinating couch.
In conjunction with the above-mentioned the 14 or the 15 aspect, a sixteenth aspect of the present invention provides a kind of X ray CT system, wherein examinating couch height measuring device rectifying inspection bed deflection.
In a sixteenth aspect of the present invention, by the correction of examinating couch deflection, the examinating couch height measuring device makes the height measuring height accurate.
[invention effect]
As mentioned above, according to the present invention, be fixed on scanning stand positioning lamp on the rotating base and partly illuminate the part of X ray workbench, and installation personnel overlaps a plurality of labellings and lighting position on the workbench, thereby workbench is installed in ideal position on the floor.Therefore, very high precision can be set up and be had to the X-ray radiography workbench at an easy rate with respect to the position to be installed of scanning stand.In addition, under workbench was placed in state on the platform trailer, the workbench installation site also can be determined, and installation personnel can be determined the workbench installation site with very high precision when travelling table thus, and might reduce quantity in man-hour.
Description of drawings
Fig. 1 has shown the schematic appearance of X ray CT entire system structure;
Fig. 2 has shown the integrally-built block diagram of X ray CT system electricity;
Fig. 3 has shown according to the present invention the exploded view of the mechanical part of the scanning stand of first embodiment;
Fig. 4 has shown the schematic appearance according to the positioning lamp part of first embodiment;
Fig. 5 has shown the schematic appearance according to the examinating couch of first embodiment;
The explanatory view of Fig. 6 has shown according to the position between the level of first embodiment and normal beam and level and the vertical marker and has concerned;
Flow chart shown in Figure 7 has shown the operation of determining X-ray radiography workbench installation site according to first embodiment;
Flow chart shown in Figure 8 has shown the operation of the examinating couch height measurement processing of second embodiment according to the present invention; With
Explanatory view shown in Figure 9 has shown from the skew curve of the examinating couch of X-ray radiography workbench protrusion.
[description of reference numerals]
4 X-ray radiography workbench
6 operating consoles
10 scanning stands
12 examinating couches
13 rotary supporting part branches
14 positioning lamp parts
16 rotating bases
17 laser instrument
18 level indicators
19 light source gripper shoes
20 X-ray tubes
22 collimators
24 X-ray detectors
26 data acquisition units
28 X ray controllers
29 holes
30 collimator handles
34 rotating parts
36 Rotation Controllers
41 horizontal light sources
42 perpendicular light source
43 horizontal light beams
44 normal beams
45,46 coupling parts
51 horizontal labellings
52 vertical marker
55 platform trailers
60 data processors
62 control interfaces
64 data acquisition buffers
66 storage devices
68 display devices
70 operating means
The specific embodiment
The X ray CT system of the most preferred embodiment according to the present invention will be described with reference to the accompanying drawings, below.But the present invention is not subjected to the restriction of following embodiment.
(first embodiment)
At first, provide description according to the X ray CT entire system structure of first embodiment of the invention.Fig. 1 is the schematic appearance that shows the X ray CT system appearance.As shown in Figure 1, this system comprises scanning stand 10, X-ray radiography workbench 4 and control station 6.X-ray radiography workbench 4 has the examinating couch 12 that the person under inspection can lie low and have a rest in the above.Examinating couch 12 is sent to the person under inspection at the middle part of scanning stand 10.
The scanning stand 10 couples of persons under inspection that are sent to core scanned, and gather person under inspection's projection information.Operating console 6 is electrically connected to scanning stand 10 and X-ray radiography workbench 4 by the cable (not shown).The scanning of being carried out by scanning stand 10 is set in the transmission of operating console 6 control examinating couches 12, and shows the faultage image information that obtains by to the image reconstruction of images acquired information.X-ray radiography workbench 4 accurately is installed on the precalculated position of setting with respect to scanning stand 10.This installation site of X-ray radiography workbench 4 is one of key factors of accurately determining person under inspection's to be made film X-ray radiography sectional position.Xyz coordinate axes shown in Figure 1 is identical with xyz coordinate axes in the subsequent drawings, the clear position relation that has shown between accompanying drawing.
Fig. 2 shows the integrally-built block diagram of X ray CT system's electricity.Scanning stand 10 has X-ray tube 20.The collimated device 22 of X ray (not shown) that penetrates from X-ray tube 20 is shaped as, the thick X-ray beam of fan-shaped propagation for example, and above-mentioned X-ray beam shines X-ray detector 24.
X-ray detector 24 has a plurality of scintillators of arranging by matrix shape on the X-ray beam propagation direction.X-ray detector 24 is wide multichannel detectors, and it has a plurality of scintillators of arranging by matrix shape.
X-ray detector 24 has formed the X ray plane of incidence that is concave surface bended as a whole.X-ray detector 24 has made up scintillator that is formed by for example mineral crystal and the photodiode that is used as optical-electrical converter.
Data acquisition unit 26 is connected on the X-ray detector 24, to gather the information that each scintillator detects in the X-ray detector.The X-radiation that is derived from X-ray tube 20 is by 28 controls of X ray controller.As for the annexation between the annexation between X-ray tube 20 and the X ray controller 28 and collimator 22 and the collimator handle 30, related description is omitted.Collimator 22 is by collimator handle 30 controls.
30 above-mentioned parts are installed on the rotating base from X-ray tube 20 to collimator handle, and above-mentioned rotating base is arranged in the rotating part 34 of scanning stand 10.As for the rotating base in the rotating part 34, can provide detailed description after a while.Person under inspection or model are placed on the X-ray radiography workbench 4, and above-mentioned workbench 4 is installed in the hole 29 that is positioned at rotating part 34 central authorities.When rotating part 34 is controlled by Rotation Controllers 36, rotating part 34 rotates and radiation X ray from X-ray tube 20, then in X-ray detector 24 according to the anglec of rotation, the X ray that passes person under inspection or model is detected as the projection information of each view.As for the annexation between rotating part 34 and the Rotation Controllers 36, related description is omitted.
Be contained in data acquisition unit 26, X ray controller 28, collimator handle 30 and the Rotation Controllers 36 of scanning stand 10 inside by control interface 62 controls.As for the connection between these parts and the control interface 62, related description is omitted.
Data processor is connected to data acquisition buffer 64, and above-mentioned data acquisition buffering 64 is connected to the data acquisition unit 26 that is arranged in scanning stand 10.The data of being gathered by data acquisition unit 26 are imported into data processor 60 by data acquisition buffer 64.
Data processor 60 uses X ray signal (the being projection information) carries out image of transmission to rebuild, and above-mentioned X ray signal is gathered by data acquisition buffer 64.Storage device 66 is connected to data processor 60.Storage device is used for save routine, and these programs are used to carry out the function by data acquisition buffer 64 acquired projections information, reconstruction tomographic image information and this system.
Display device 68 and operating means 70 are connected to data processor 60.Display device 68 shows the out of Memory of tomographic image information and output from data processor 60.Operating means 70 is operated by operator, and to data processor 60 various instructions of input and information.Use display device 68 and operating means 70, operator alternatively operate this system.Scanning stand 10, X-ray radiography workbench 4 and 6 couples of persons under inspection of operating console or model carry out X-ray radiography and obtain tomographic image.
Fig. 3 has illustrated the frame for movement of scanning stand 10 and X-ray radiography workbench 4.Scanning stand 10 comprises that mechanically the rotary supporting part of rotating base 16 and support rotating base 16 divides 13.Fig. 3 has shown the mechanical part of the scanning stand 10 except that above-mentioned main electric component, as from scanning stand 10 shown in Figure 1 to shell with from X-ray tube 20 to collimator handle 30.
Rotating base 16 is 29 rotations around the hole, although the parts that do not have to show the control 30 from X-ray tube 20 to collimator are placed thereon.Rotating base 16 has positioning lamp part 14, is used to illuminate the installation site of X ray workbench 4.
Rotary supporting part divides 13 to support rotating base 16, makes that rotating base can 29 rotations around the hole.In order to reduce the rolling of rotating base 16, rotary supporting part divides 13 to support rotating base 16 by following mode: the shape that supports the support of rotating base is an equilateral triangle.
Fig. 4 is the schematic appearance that shows positioning lamp part 14 details.Positioning lamp part 14 comprises light source gripper shoe 19, coupling part 45 and 46, laser instrument 17 and level indicator 18.Coupling part 45 and 46 is connected to rotating base 16 1 sides of placing X-ray radiography workbench 4 with light source gripper shoe 19.In the equidistant place of distance center of rotation, rotating base 16 is got out the supported hole that is used for coupling part 45 and 46.Coupling part 45 and 46 is joined to one another light source gripper shoe 19 and rotating base 16, so that both can utilize for example following method to be taken apart mutually at an easy rate, the rod-like protrusions that is fixed in the described method on the light source gripper shoe 19 is inserted in the above-mentioned supported hole.
Level indicator 18 is inclinometers of electronic type or mechanical type (using bubble etc.), and is placed on the light source gripper shoe 19.By hand rotation rotating base 16 and by usage level instrument 18, the surface of light source gripper shoe 19 is accurately fixed on horizontal level, and wherein positioning lamp part 14 is attached on the rotating base 16, and laser instrument 17 is placed on the light source gripper shoe 19.
Laser instrument 17 has horizontal light source 41 and perpendicular light source 42, and laser instrument 17 is placed on the 45 and 46 equidistant places apart from the coupling part on light source gripper shoe 19.Horizontal light source 41 and perpendicular light source 42 penetrate the horizontal light beam 43 and the normal beam 44 of fan-shaped expansion, and the optical plane of above-mentioned two light beams is perpendicular to one another, and above-mentioned two light beams are directed to X ray workbench 4.When the surface maintenance level of the top light source gripper shoe 19 that is placed with laser instrument 17 and the tip position of the rotating base 16 positioning lamp part 14 of rotating together be positioned at the top of the center of rotation of rotating base 16.Laser instrument 17 is placed on the mid point between coupling part 45 and 46, wherein coupling part 45 and 46 distances to center of rotation equate, laser instrument 17 penetrates horizontal light beam 43 from horizontal light source 41, the fan-shaped expansion and compare more or less downward-sloping with horizontal plane on the x direction of principal axis of the beam plane of horizontal light beam 43.Similar, laser instrument 17 penetrates normal beam 44 from perpendicular light source 42, the fan-shaped expansion and and comprise that the vertical plane of center of rotation overlaps on the z direction of principal axis of the beam plane of normal beam 44.
Fig. 5 is that X-ray radiography workbench 4 shown in Figure 3 is seen schematic appearance in the past from y axle top.The examinating couch 12 that is placed on the X-ray radiography workbench 4 has the rectangular flat surface usually, and has the horizontal labelling 51 and the vertical marker 52 that is positioned on the planar surface minor face that is positioned on the long limit of planar surface.Horizontal labelling 51 and vertical marker 52 are the linear mark that are printed on the examinating couch 12, can be operated the identification of personnel or installation personnel at an easy rate.
X-ray radiography workbench 4 and examinating couch 12 have roughly symmetrical structure about the yz axial plane as vertical plane, vertical marker 52 is positioned on the axis of symmetry of X-ray radiography workbench 4 and examinating couch 12, and be printed on the both ends of examinating couch 12, these both ends are positioned at a side and the opposite side relative with it of stand 10 respectively.Horizontal labelling 51 is printed on the both ends on the x direction of principal axis, and above-mentioned x axle is vertical with the straight line of the axis of symmetry of expression examinating couch 12.According to the ejaculation direction of horizontal light beam 43 from laser instrument 17 and the height of the platform trailer that transmits X-ray radiography workbench 4, determine each horizontal labelling 51 position on the z direction of principal axis apart from ground.
Fig. 6 illustrate horizontal labelling 51 in the position on the z direction of principal axis, direction that horizontal light beam 43 penetrates from laser instrument 17 and the platform trailer that transmits X-ray radiography workbench 4 be apart from the relation between the height on ground.X-ray radiography workbench 4 is placed on the platform trailer 55, so that can freely move on the ground.Laser instrument 17 is by level indicator 18 maintenance levels, and hypothesis X-ray radiography workbench 4 rest on the ground the position that it will be mounted with respect to scanning stand 10.
Fig. 6 (A) is that scanning stand 10, X-ray radiography workbench 4 and examinating couch 12 are seen sketch map in the past from x direction of principal axis (corresponding to horizontal direction).Examinating couch 12 is fixed on predetermined terrain clearance (h).Laser instrument 17 is mapped to horizontal light beam 43 and normal beam 44 on the examinating couch 12.
Fig. 6 (B) is the sketch map that layout obtained of observing Fig. 6 (A) from y direction of principal axis (corresponding to vertical direction).The illuminating line and the horizontal labelling 51 that are formed by the horizontal light beam 43 that shines on the examinating couch 12 align, and are alignd by illuminating line and vertical marker 52 that the normal beam 44 that shines on the examinating couch 12 forms.The position of horizontal labelling 51 on the z direction of principal axis promptly is the installation site of X-ray radiography workbench 4 on the floor, and makes regulating the illuminating line of horizontal labelling 51 and horizontal light beam 43 is in alignment with each other.During in the axial position of z, examinating couch 12 should be considered apart from the height (h) on ground and the direction of illumination and the angle between the horizontal plane of horizontal light beam 43 at definite horizontal labelling 51.
Then, with reference to the flow chart of figure 7, provided relevant use laser instrument 17 among the figure and be imprinted on horizontal labelling 51 on the examinating couch 12 and description that vertical marker 52 is installed X-ray radiography workbench 4.Flow chart shown in Figure 7 has shown installs the operation that X-ray radiography workbench 4 is carried out.
At first, installation personnel is installed scanning stand 10 (step S701) on the floor, checks the levelness of scanning stand 10 etc. then, if levelness just is fixed on stand 10 on the floor with interior in reference value.Simultaneously, pull down the protecgulum of scanning stand 10.
After this, installation personnel is installed to (step S702) on the rotating base 16 to positioning lamp part 14, the hand rotation rotating base 16 then, the inclination angle of checking level indicator 18 expression simultaneously to be to adjust the position of rotating base 16, makes laser instrument 17 in the positioning lamp part 14 level (step S703) that becomes.Then, installation personnel is connected the power supply of laser instrument 17, allows laser instrument to penetrate horizontal light beam 43 and normal beam 44.
After this, installation personnel moves the X-ray radiography workbench 4 that is placed on the platform trailer 55, so that with the horizontal labelling 51 on the examinating couch 12 and vertical marker 52 same level light beams 43 and normal beam 44 alignment (step S704).Simultaneously, adjust the X-ray radiography workbench 4 that is positioned on the platform trailer 55, make X-ray radiography workbench 4 become minimum apart from the height on ground.Then, installation personnel is measured the height (h) (step S705) of examinating couch 12 apart from ground.For example, this height is measured and can be used bar or measuring device with reference length to finish.As for other method, the back will be described.
After this, whether installation personnel inspection height (h) is positioned within the bound threshold value that defines permissible range (step S706).If the answer is in the negative (among the step S706 not), installation personnel is regulated the height (step S707) of examinating couch 12.By regulating the height (by platform trailer 55 carried out) of X-ray radiography workbench 4 apart from ground, or cause examinating couch 12 to raise or the elevating function of the workbench 4 that reduces by use, the height of examinating couch 12 is conditioned.Then, the translation among the execution in step S704 once more, installation personnel moves X-ray radiography workbench 4 in this process, makes horizontal labelling 51 and vertical marker 52 same level light beams 43 and normal beam 44 alignment.
On the other hand, if the height of examinating couch 12 (h) is arranged in (step S706 is) within the threshold value, the installation site of X-ray radiography workbench on the floor is considered to correct, therefore, installation personnel removes platform trailer (step S708) immediately, and X-ray radiography workbench 4 is installed in (step S709) on the floor.Now, above-mentioned processing finishes.The threshold value of the permissible range of expression height (h) is set, and has also considered the positional precision that X-ray radiography workbench 4 is installed on the floor and the positional precision of horizontal light beam 43 and normal beam 44 irradiations simultaneously.
As mentioned above, in first embodiment, the X-ray radiography workbench 4 that is placed on the platform trailer 55 is moved, and the level and the normal beam 43,44 that penetrate in the laser instrument 17 and be stamped in level on the examinating couch 12 and vertical marker 51,52 positions aligning corresponding to the correct installation site of workbench 4 with respect to scanning stand 10.Therefore, under workbench 4 was placed on state on the platform trailer 55, very high precision can be determined and be had in the installation site of X-ray radiography workbench 4 at an easy rate.Therefore, might reduce installation man-hours requirement number.
Although level and vertical marker 51,52 are printed on the examinating couch 12 in first embodiment, they can be printed on the other parts that X-ray radiography workbench 4 illuminated by level and normal beam 43,44, rather than are imprinted on the examinating couch 12.
Although level and vertical marker the 51, the 52nd in first embodiment, with level and normal beam 43,44 eclipsed linear mark, the shape of labelling is not limited to this.For example, the shape of labelling can be dotted line, dotted line or arrow.
In first embodiment, in step S704, the X-ray radiography workbench is moved to after the desirable installation site substantially, in subsequent step S705 and S707, measure and regulate the height of examinating couch.But after measuring and regulating the examinating couch height, the X-ray radiography workbench can be moved to desirable installation site.
In addition, measure the height of examinating couch although in first embodiment, use measuring device etc., but can make modification, laser instrument is installed on the middle position and positioning lamp part 14 vertical directions with respect to rotating base 16 in this modification, the number of altitude is printed on the side of X-ray radiography workbench 4 then, and the alignment of the laser and the number of altitude highly is counted as the best examinating couch height in highly measuring.
(second embodiment)
Although in first embodiment in step S705 the examinating couch height by using measuring device etc. measured, but adopt a kind of method here, examinating couch 12 is moved to the imaging scope of scanning stand 10 in this method, then carry out imaging, and determine the accurate height (h) of examinating couch 12 according to the projection information that obtains or tomographic image information in real time.In this connection,, adopt a kind of height to measure here and handle, in this processing, determine the height (h) of examinating couch 12 according to the tomographic image information of examinating couch 12 according to second embodiment.
The hardware configuration of hardware configuration that the X ray CT system of second embodiment has according to the present invention and the X ray CT system shown in Fig. 1 to 5 is identical, and the detailed description of therefore relevant hardware configuration here is omitted.In addition, measure by the examinating couch height of in the step S705 of the flow chart of Fig. 7, carrying out, carry out height in the X ray CT system of second embodiment and measure and handle, and the flow chart among other operation and Fig. 7 is identical, therefore the explanation about this part here is omitted.
Flow chart shown in Figure 8 has shown according to the operation in the examinating couch height measurement processing of second embodiment.At first, installation personnel is from operating console 6 input target examinating couch height (h) (step S801).Above-mentioned height (h) is positioned near the height the center of rotation position of rotating base 16 basically corresponding to examinating couch 12 and coupled platform trailer 55.Above-mentioned height (h) is also corresponding to when X-ray radiography workbench 4 is placed on ideal position, the height that horizontal labelling 51 on horizontal light beam 43 that sends from laser instrument 17 and normal beam 44 and the examinating couch 12 and vertical marker 52 overlap each other, wherein laser instrument 17 is installed on the vertical direction of rotating base.
After this, installation personnel is transported to the center of rotating base 16 with examinating couch 12, and takes the X-ray photographs (step S802) of examinating couch 12.In this case, because it is also definite substantially that X-ray radiography workbench 4 is located substantially on the distance of ideal installation site and itself and scanning stand 10,, the length of the examinating couch 12 that protrudes from X-ray radiography workbench 4 is enough to carry out the predetermined length that X ray is taken pictures so being adjusted to.
After this, the data processor 60 in the operating console 6 is estimated the height (step S803) of examinating couch 12 apart from ground according to the tomography X image information of examinating couch 12.Data processor 60 has the examinating couch height measuring device, and this device is according to image measurement image (intra-image) position that is positioned at the examinating couch 12 of tomographic image, and definite examinating couch 12 is apart from the height on ground.The examinating couch height measuring device by Flame Image Process (for example, binaryzation) determines position in the image of examinating couch 12, the position of position on the y direction of principal axis (just in the measurement image, position on the short transverse), and with the height addition of itself and picture centre position, to determine the examinating couch height apart from ground.Above-mentioned estimation height is corresponding to the height of examinating couch 12 at the image space place, and this moment, examinating couch 12 was transported to the center of rotating base 16.
After this, the deflection (step S804) of data processor 60 rectifying inspection beds 12.According to length of protruding from X-ray radiography workbench 4 and the person under inspection's body weight on the examinating couch 12, deflection takes place in examinating couch 12 in vertical direction.
Fig. 9 shown according to protruding the skew curve that length forms, and wherein the length protruded from X-ray radiography workbench 4 of examinating couch 12 marks along abscissa, and the terrain clearance of the fore-end of examinating couch 12 marks along vertical coordinate.It is big more to protrude length from skew curve as can be seen, and fore-end is just more little apart from the height on ground.Highly measuring in the processing, the protrusion length of examinating couch 12 is adjusted to predetermined length, and is not placed on the examinating couch 12 such as the such weight of person under inspection, so skew curve is clearly determined.On the other hand, the examinating couch height measuring device determines to depart from correcting value according to the X-ray radiography position of protruding examinating couch 12.Examinating couch height to be determined is meant the examinating couch 12 that is placed under the situation that is not having to protrude on the X-ray radiography workbench 4 height apart from ground in second embodiment.Because X-ray radiography workbench 4 is determined by the step S704 among Fig. 7 basically with respect to the position of scanning stand 10, so the X-ray radiography position of examinating couch 12 also is determined substantially.
After this, the examinating couch 12 that data processor 60 will be determined like this outputs to as numerical data apart from the height on ground, for example the display part of operating console 6 (step S805).
As mentioned above, in second embodiment,, measure the height of examinating couch 12, and the deflection of examinating couch is corrected so that make and highly has very high precision simultaneously apart from ground according to the tomographic image information of the examinating couch of gathering by scanning stand 10 12.Therefore, very high precision can be measured and be had to the examinating couch 12 that is positioned on the X-ray radiography workbench 4 at an easy rate in real time apart from the height on ground.
Although in second embodiment, use the height of the tomographic image information measurement examinating couch 12 of examinating couch 12, also may be only according to height as the partial projection information measurement examinating couch 12 on tomographic image information basis.
Claims (16)
1. X ray CT system comprises:
The scanning stand has X-ray tube and X-ray detector and is installed in rotating base on it, and this rotating base rotate with the projection information of collection about the person under inspection around the person under inspection;
X ray workbench, next-door neighbour's scanning stand are placed on the floor and the person under inspection are sent to the center of rotation; With
Operating console is used for control and transmits and information gathering,
Wherein scan stand and have the positioning lamp part that is fixed on the rotating base, be used to illuminate the part of X-ray radiography workbench, and
The X-ray radiography workbench has a plurality of labellings, and when the X-ray radiography workbench was placed on ideal position on the floor, these labellings were consistent with lighting position.
2. X ray CT according to claim 1 system, wherein positioning lamp partly comprises perpendicular light source and horizontal light source, normal beam fan-shaped expansion on direction of transfer that perpendicular light source penetrates, the horizontal light beam that horizontal light source penetrates with the vertical direction of direction of transfer on fan-shaped expansion.
3. X ray CT according to claim 2 system, wherein perpendicular light source and horizontal light source are lasing light emitters.
4. according to claim 2 or the described X ray CT of claim 3 system, wherein positioning lamp partly comprises perpendicular light source and horizontal light source is fixed to light source gripper shoe on the rotating base.
5. X ray CT according to claim 4 system, wherein rotating base comprises two adjacent supported holes, these two supported holes are positioned at the position that equates apart from center position.
6. X ray CT according to claim 5 system, wherein the light source gripper shoe is apart from two the equidistant position of supported hole support levels perpendicular light source and horizontal light source thereon.
7. according to claim 5 or the described X ray CT of claim 6 system, wherein the light source gripper shoe is detachably mounted in the supported hole.
8. according to the described X ray CT of in the claim 1 to 7 any system, wherein positioning lamp partly comprises level indicator.
9. according to the described X ray CT of in claim 4 to 7 and the claim 8 any system, wherein level indicator is placed on the light source gripper shoe.
10. according to the described X ray CT of in the claim 1 to 9 any system, wherein labelling is stamped on the examinating couch of X-ray radiography workbench.
11. X ray CT according to claim 10 system, wherein examinating couch has the rectangular flat surface that long edge direction of transfer extends, and impresses in the center of two minor faces that form planar surface.
12. X ray CT according to claim 11 system, wherein with respect to the axisymmetric position by two centers, forming on two long limits of planar surface and impressing.
13. according to the described X ray CT of in the claim 1 to 12 any system, wherein the X-ray radiography workbench comprises the platform trailer of the removable type that has wheel.
14. according to the described X ray CT of in the claim 1 to 13 any system, wherein operating console comprises the examinating couch height measuring device, the examinating couch projection information that this device is gathered according to the scanning stand, the examinating couch of measured X radiography workbench is apart from the height on ground.
15. X ray CT according to claim 14 system, wherein the examinating couch height measuring device is measured according to the tomographic image information of examinating couch, described tomographic image information according to a plurality of described projection information segments by image reconstruction.
16. according to claim 14 or the described X ray CT of claim 15 system, the wherein deflection of examinating couch height measuring device rectifying inspection bed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100926858A CN100553562C (en) | 2005-08-18 | 2005-08-18 | The X ray CT system |
| JP2006206072A JP5355849B2 (en) | 2005-08-18 | 2006-07-28 | X-ray CT system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100926858A CN100553562C (en) | 2005-08-18 | 2005-08-18 | The X ray CT system |
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| CN1915171A true CN1915171A (en) | 2007-02-21 |
| CN100553562C CN100553562C (en) | 2009-10-28 |
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| CNB2005100926858A Active CN100553562C (en) | 2005-08-18 | 2005-08-18 | The X ray CT system |
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| JP (1) | JP5355849B2 (en) |
| CN (1) | CN100553562C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101849837A (en) * | 2010-06-24 | 2010-10-06 | 于红林 | High-speed CT (Computed Tomography) device |
| CN103499593A (en) * | 2013-09-23 | 2014-01-08 | 深圳先进技术研究院 | Computed tomography scanning system |
| CN103505209A (en) * | 2012-06-27 | 2014-01-15 | 上海西门子医疗器械有限公司 | Medical instrument |
| CN104939924A (en) * | 2014-03-27 | 2015-09-30 | 西门子公司 | Positioning unit, imaging device and method for the optical generation of a positioning aid |
| CN107595537A (en) * | 2017-10-17 | 2018-01-19 | 李书平 | A kind of detection bed for department of obstetrics and gynecology |
| CN107669286A (en) * | 2017-11-15 | 2018-02-09 | 吉林医药学院 | A kind of imaging system for neurosurgery |
| CN107789002A (en) * | 2017-09-28 | 2018-03-13 | 潍坊华锐医学影像设备有限公司 | A kind of pre- clinical high-resolution X-ray check platform |
| CN112386274A (en) * | 2019-08-15 | 2021-02-23 | 上海西门子医疗器械有限公司 | Method and system for calibrating position of examination table relative to CT frame |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5710332B2 (en) * | 2011-03-26 | 2015-04-30 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | Alignment adjustment method, alignment measurement method, and alignment jig |
| JP5630407B2 (en) * | 2011-09-02 | 2014-11-26 | 株式会社島津製作所 | X-ray diagnostic equipment |
| CN111127550B (en) * | 2019-12-26 | 2023-08-29 | 上海联影医疗科技股份有限公司 | Image slice positioning method, device and system based on bed board and storage medium |
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| US4538289A (en) * | 1981-12-28 | 1985-08-27 | General Electric Company | Reflective alignment light for computerized tomography |
| US4836671A (en) * | 1985-04-08 | 1989-06-06 | Charles Lescrenier | Locating device |
| JPH07148151A (en) * | 1993-11-25 | 1995-06-13 | Hitachi Medical Corp | X-ray ct apparatus |
| JPH08117218A (en) * | 1994-10-25 | 1996-05-14 | Ge Yokogawa Medical Syst Ltd | Inter-image computing method and ct device |
| JPH08299323A (en) * | 1995-04-27 | 1996-11-19 | Line Seiki Kk | Deflection correcting device |
| JP4130024B2 (en) * | 1998-10-02 | 2008-08-06 | ジーイー横河メディカルシステム株式会社 | Position measuring method using X-ray CT apparatus, X-ray CT apparatus having position measuring function, and flat pad |
| JP2003310604A (en) * | 2002-04-19 | 2003-11-05 | Ge Medical Systems Global Technology Co Llc | Medical imaging apparatus, radiotherapy apparatus and carrier |
| JP4156970B2 (en) * | 2003-05-07 | 2008-09-24 | 株式会社日立メディコ | Medical diagnostic imaging equipment |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101849837A (en) * | 2010-06-24 | 2010-10-06 | 于红林 | High-speed CT (Computed Tomography) device |
| CN103505209A (en) * | 2012-06-27 | 2014-01-15 | 上海西门子医疗器械有限公司 | Medical instrument |
| CN103505209B (en) * | 2012-06-27 | 2015-09-30 | 上海西门子医疗器械有限公司 | Medical apparatus and instruments |
| CN103499593A (en) * | 2013-09-23 | 2014-01-08 | 深圳先进技术研究院 | Computed tomography scanning system |
| CN104939924A (en) * | 2014-03-27 | 2015-09-30 | 西门子公司 | Positioning unit, imaging device and method for the optical generation of a positioning aid |
| US10376217B2 (en) | 2014-03-27 | 2019-08-13 | Siemens Aktiengesellschaft | Positioning unit for positioning a patent, imaging device and method for the optical generation of a positioning aid |
| CN107789002A (en) * | 2017-09-28 | 2018-03-13 | 潍坊华锐医学影像设备有限公司 | A kind of pre- clinical high-resolution X-ray check platform |
| CN107595537A (en) * | 2017-10-17 | 2018-01-19 | 李书平 | A kind of detection bed for department of obstetrics and gynecology |
| CN107669286A (en) * | 2017-11-15 | 2018-02-09 | 吉林医药学院 | A kind of imaging system for neurosurgery |
| CN112386274A (en) * | 2019-08-15 | 2021-02-23 | 上海西门子医疗器械有限公司 | Method and system for calibrating position of examination table relative to CT frame |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007050243A (en) | 2007-03-01 |
| CN100553562C (en) | 2009-10-28 |
| JP5355849B2 (en) | 2013-11-27 |
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