CN102805643A - System for compensating bending of inspection bed - Google Patents
System for compensating bending of inspection bed Download PDFInfo
- Publication number
- CN102805643A CN102805643A CN2011101451705A CN201110145170A CN102805643A CN 102805643 A CN102805643 A CN 102805643A CN 2011101451705 A CN2011101451705 A CN 2011101451705A CN 201110145170 A CN201110145170 A CN 201110145170A CN 102805643 A CN102805643 A CN 102805643A
- Authority
- CN
- China
- Prior art keywords
- height
- difference
- bed board
- bucking
- image
- 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.)
- Pending
Links
Images
Landscapes
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The invention provides a system for compensating the bending of an inspection bed. The system comprises a distance measurement device for measuring the current height of a bed board of the inspection bed at an imaging position, a height difference calculating unit for calculating the height difference according to the current height and the expected height of the bed board and a height difference compensating device for compensating the height difference of the bed board at the imaging position. By the system, the current height of the bed board is measured, and the height difference of the current height and the expected height is calculated, so that the height difference can be compensated by various methods.
Description
Technical field
The present invention relates to the examinating couch field, particularly to computer X-ray fault imaging (Computed Tomography, CT) the crooked compensation of examinating couch in the equipment.
Background technology
CT is a kind of medical imaging devices commonly used, and the image of CT can be used as radiotherapy treatment planning (Radiation Treatment Planning, basis RTP).When the image of CT is used for RTP, need the examinating couch of CT can keep patient in the CT imaging process sweep test at sustained height.Otherwise the CT image can not reflect the position of focus exactly.
As shown in Figure 1, in the scanning room, CT equipment 100 mainly comprises a frame 101, patient's induction system (Patient Handling System, PHS) 102 and bed boards 103.Certainly, CT equipment also comprises many other parts, and the present invention has just shown the part parts the most relevant with the present invention here.When PHS 102 is carrying patient 104 on bed board 103 and the bed board 103 when frame 101 directions move, because patient 104 body weight can make bed board 103 bend and sagging, as shown in Figure 2 at the end away from PHS 102.So, if do not eliminate this bending or this bending of uncompensation, the CT image that obtains so just can not correctly reflect the tram of focus in the human body.
A solution is to use the RTP mattress of being processed by foam plastics, the RTP bed board of perhaps being processed by fibre glass, to expect and can scanning bed bending be controlled in certain scope.Usually, the mechanical strength of RTP bed board is higher than the RTP mattress.
For example, Chinese utility model patent CN201253214Y discloses a kind of bed board of being processed by fibre glass.Usually, RTP bed board and RTP mattress all compare expensive.
Nowadays, utilize the CT image to be used for the location of RTP function, proposed increasingly high requirement for the precision of CT image in technical field of imaging.And the bending of how handling examinating couch through more technological means is to improve technical problem that needs to be resolved hurrily in the precision of images process.
Summary of the invention
In view of this, the present invention proposes the crooked bucking-out system of a kind of examinating couch, in order to eliminate the influence of examinating couch bed board bending to the CT precision of images.
Therefore, according to embodiments of the invention, proposed the crooked bucking-out system of a kind of examinating couch, this bucking-out system comprises:
Distance-measuring device is used to measure the current height of the bed board of said examinating couch at image space;
The difference in height computing unit is used for current height and Desired Height according to said bed board, calculates both differences in height;
The difference in height compensation arrangement is used to compensate the difference in height of said bed board at image space.
Can find out from such scheme,, thereby can compensate said difference in height through various means because the present invention has measured the current height of bed board, and calculates the difference in height of current height and Desired Height.
According to a kind of embodiment, said difference in height compensation arrangement comprises arrangement for adjusting height, and said arrangement for adjusting height is used to regulate the move up distance of said difference in height of bed board.Because the present invention has measured the difference in height of examinating couch bed board; And to the height of adjusted bed board to desired height; In the CT imaging process, the bed board of examinating couch is positioned at desired height all the time so, thereby has eliminated the influence of examinating couch bending to the CT precision of images.
Alternatively, said arrangement for adjusting height comprises converter, motor driver and vertical motor; Wherein, converter is used for converting the bed board difference in height to driver numerical value, and said motor driver is used for driving vertical motor according to said driver numerical value, with the bed board said difference in height that rises.
According to another kind of embodiment, said difference in height compensation arrangement comprises image control system, and the image that said image control system is used for after reconstruction marks said difference in height.Like this, doctor or operator can make right judgement according to the difference in height of institute's labelling, have avoided the crooked influence that is caused of examinating couch.
According to another embodiment, said difference in height compensation arrangement comprises image control system, and said image control system is used for the image after rebuilding is moved to image camber direction the distance of said difference in height.Because the present invention has measured the difference in height of examinating couch bed board, and compensates image after rebuilding, make that there is not the crooked skew that is caused of examinating couch in the image after the compensation, thereby eliminated the influence of examinating couch bending the CT precision of images.
Alternatively, said distance-measuring device is sonar or laser range finder.Use sonar or laser range finder to reduce cost.
Alternatively, said distance-measuring device is arranged on the frame, be positioned at said bed board under or directly over.This scheme is the height of measuring vertical direction directly.
Alternatively, the part of the stationary part control device that said difference in height computing unit is a CT equipment, perhaps said difference in height computing unit is an independent device.It is thus clear that the embodiment of the invention provides implementation flexibly.
Description of drawings
To make clearer above-mentioned and other feature and advantage of the present invention of those of ordinary skill in the art through describing the preferred embodiments of the present invention in detail below with reference to accompanying drawing, in the accompanying drawing:
Fig. 1 is the sketch map of existing C T equipment.
Fig. 2 is the crooked sketch map of examinating couch bed board in the CT equipment.
Fig. 3 is the structural representation of system according to an embodiment of the invention.
Fig. 4 is the structural representation of system according to another embodiment of the present invention.
Fig. 5 is the structural representation of system according to yet another embodiment of the invention.
In the accompanying drawings, used Reference numeral comprises:
100 CT equipment, 101 frames, 102 PHS, 103 bed boards
104 patients, 105 distance-measuring devices, 106 MAS, 107 IRS
108?ICS
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer, below lift embodiment to further explain of the present invention.
According to embodiments of the invention, the bucking-out system that examinating couch is crooked is measured the current height of bed board, calculates the difference in height of current height and Desired Height, compensates according to this difference in height then.
Like Fig. 3 and shown in Figure 4, the crooked bucking-out system of examinating couch is that example describes to be used for CT equipment in this embodiment according to an embodiment of the invention.Wherein, said CT equipment comprises a frame 101, PHS 102, stationary part control device (Master Stationary, MAS) bed board 103 of 106 and examinating couches.
Bucking-out system comprises a distance-measuring device 105, a difference in height computing unit (not shown) and an arrangement for adjusting height.
Distance-measuring device 105 is used to measure the current height at frame 101 place's examinating couch bed boards 103, and for example bed board is in the distance of vertical direction and distance-measuring device 105.Because what present embodiment was concerned about is the height of bed board 103 at image space, so distance-measuring device 103 measurements is the current height of bed board 103 at image space (for example frame place).Distance-measuring device 105 is arranged on the frame 101, specifically can be arranged on bed board 103 directly over or under (having shown the latter among the figure), thereby can measure the current height of bed board.Distance-measuring device 105 can adopt sonar, laser range finder etc.
Stationary part control device 106 comprises a difference in height computing unit (not shown); The difference in height computing unit is used for receiving from distance-measuring device 105 the current height of bed board; And combine known Desired Height, the difference in height between calculating inspection bed bed board 103 current height and the Desired Height.
As stated, the difference in height computing unit can be the part of MAS 106.The difference in height computing unit also can be the part of miscellaneous equipment, or a unit independently.
According to one embodiment of present invention, the difference in height computing unit sends the bed board difference in height to an arrangement for adjusting height (not shown).Arrangement for adjusting height drives bed board and rises according to the bed board difference in height, the distance that equals said difference in height that for example upwards rises, thus make bed board return to Desired Height.
According to a kind of embodiment, arrangement for adjusting height can comprise a converter, motor driver and a vertical motor.Converter converts the bed board difference in height to driver numerical value, offers motor driver.Motor driver drives vertical motor according to this driver numerical value, makes vertical motor with the bed board distance that rises, i.e. bed board difference in height, thus make bed board return to Desired Height.
Above-mentioned arrangement for adjusting height can be the part of PHS 102.Perhaps, the motor driver in the arrangement for adjusting height is the component among the PHS 102 with vertical motor, and converter can be arranged among MAS 106 or the PHS 102.
Through above-mentioned embodiment, though the bed board of examinating couch also can downwarping, (that is, current scanning position) remains at Desired Height to bed board at the frame place, thereby eliminated the crooked adverse effect that is caused of bed board in the prior art.
Fig. 3 and Fig. 5 have shown the structural representation of the bucking-out system of another embodiment of the present invention.As shown in the figure, bucking-out system comprises a distance-measuring device 105, difference in height computing unit and image control system (Image Control System, ICS) 108.
Distance-measuring device 105 is used to measure the current height at frame 101 place's examinating couch bed boards 103, and for example bed board is surveyed the distance that connects device 105 in vertical direction and distance.Distance-measuring device 105 is arranged on the frame 101, specifically can be arranged on bed board 103 directly over or under (having shown the latter among the figure), thereby can measure the current height of bed board.Distance-measuring device 105 can adopt sonar, laser range finder etc. equally, in this embodiment.
Stationary part control device 106 comprises a difference in height computing unit (also not showing among the figure); The difference in height computing unit is used for receiving from distance-measuring device 105 the current height of bed board; And combine known Desired Height; The difference in height of calculating inspection bed bed board 103, poor between promptly current height and the Desired Height.
Similarly, the difference in height computing unit can be the part of MAS 106.The difference in height computing unit also can be the part of miscellaneous equipment, or a unit independently.
According to another embodiment of the invention, the difference in height computing unit sends the bed board difference in height to ICS 108.In CT equipment, (Image Reconstruct System, IRS) 107 CT images after will rebuilding send ICS 108 to image re-construction system.ICS 108 can mark difference in height in the CT image according to the bed board difference in height after from the reconstruction of IRS 107.
According to another embodiment; ICS 108 can be according to the bed board difference in height from the difference in height computing unit; CT image to from image re-construction system 107 compensates; For example image is moved above-mentioned difference in height to Y axle positive direction, thereby compensated because the adverse effect that the bed board downwarping causes in the Y direction.
Through this embodiment, though the bed board of examinating couch also can downwarping, and still there is height error in bed board at the frame place, eliminated the influence of above-mentioned height error in the CT image of this embodiment after reconstruction.
To sum up, embodiments of the invention have proposed the crooked bucking-out system of a kind of examinating couch, and this bucking-out system comprises: distance-measuring device is used to measure the current height of the bed board of said examinating couch at image space; The difference in height computing unit is used for current height and Desired Height according to said bed board, calculates both differences in height; The difference in height compensation arrangement is used to compensate the difference in height of said bed board at image space.Because the present invention has measured the current height of bed board, and calculates the difference in height of current height and Desired Height, thereby can compensate said difference in height through various means.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the crooked bucking-out system of an examinating couch, this bucking-out system comprises:
Distance-measuring device is used to measure the current height of the bed board of said examinating couch at image space;
The difference in height computing unit is used for current height and Desired Height according to said bed board, calculates both differences in height;
The difference in height compensation arrangement is used to compensate the difference in height of said bed board at image space.
2. bucking-out system according to claim 1 is characterized in that, said difference in height compensation arrangement comprises arrangement for adjusting height, and said arrangement for adjusting height is used to regulate the move up distance of said difference in height of bed board.
3. bucking-out system according to claim 2 is characterized in that, said arrangement for adjusting height comprises converter, motor driver and vertical motor; Wherein, converter is used for converting the bed board difference in height to driver numerical value, and said motor driver is used for driving vertical motor according to said driver numerical value, with the bed board said difference in height that rises.
4. bucking-out system according to claim 1 is characterized in that, said difference in height compensation arrangement comprises image control system, and the image that said image control system is used for after reconstruction marks said difference in height.
5. bucking-out system according to claim 1 is characterized in that, said difference in height compensation arrangement comprises image control system, and said image control system is used for the image after rebuilding is moved to image camber direction the distance of said difference in height.
6. bucking-out system according to claim 1 is characterized in that, said distance-measuring device is sonar or laser range finder.
7. according to claim 1 or 6 described bucking-out systems, it is characterized in that said distance-measuring device is arranged on the frame, be positioned at said bed board under or directly over.
8. bucking-out system according to claim 1 is characterized in that, the part of the stationary part control device that said difference in height computing unit is a CT equipment, and perhaps said difference in height computing unit is an independent device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101451705A CN102805643A (en) | 2011-05-31 | 2011-05-31 | System for compensating bending of inspection bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101451705A CN102805643A (en) | 2011-05-31 | 2011-05-31 | System for compensating bending of inspection bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102805643A true CN102805643A (en) | 2012-12-05 |
Family
ID=47229636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101451705A Pending CN102805643A (en) | 2011-05-31 | 2011-05-31 | System for compensating bending of inspection bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102805643A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103340644A (en) * | 2013-06-28 | 2013-10-09 | 沈阳东软医疗系统有限公司 | Image position compensating method and device |
| CN104586421A (en) * | 2014-12-31 | 2015-05-06 | 沈阳东软医疗系统有限公司 | Method and device for eliminating positioning eccentricity |
| CN109171794A (en) * | 2018-08-24 | 2019-01-11 | 上海联影医疗科技有限公司 | A kind of compensation the scanning bed of bed board VERTICAL DEFORMATION, scan method and computer-readable medium |
| CN109260612A (en) * | 2018-11-28 | 2019-01-25 | 上海联影医疗科技有限公司 | The location parameter detection method of hospital bed, method for correcting position, apparatus and system |
| US10568596B2 (en) | 2016-06-30 | 2020-02-25 | Shanghai United Imaging Healthcare Co., Ltd. | Table system and method for PET/CT imaging |
| CN112716730A (en) * | 2020-12-04 | 2021-04-30 | 上海西门子医疗器械有限公司 | Medical equipment and sickbed thereof |
| CN113425322A (en) * | 2021-06-25 | 2021-09-24 | 上海联影医疗科技股份有限公司 | Bed board movement control method and system, CT scanning system and storage medium |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08299323A (en) * | 1995-04-27 | 1996-11-19 | Line Seiki Kk | Deflection correcting device |
| US20020081008A1 (en) * | 2000-12-21 | 2002-06-27 | Wollenweber Scott D. | Imaging table sag measurement and compensation method and apparatus |
| US20020104163A1 (en) * | 2001-01-25 | 2002-08-08 | Siemens Aktiengesellschaft | Support device for an imaging medical examination apparatus and method for the operation thereof |
| US20030078489A1 (en) * | 2001-10-19 | 2003-04-24 | Koninklijke Philips Electronics N.V. | Multimodality medical imaging system and method with patient handling assembly |
| US20040223584A1 (en) * | 2003-03-14 | 2004-11-11 | Hans-Jurgen Kroner | Tomography imaging system with an acquisition unit and a patient positioning table with a horizontally movable patient board |
| CN1572256A (en) * | 2003-06-04 | 2005-02-02 | 西门子公司 | Patient examination support system and method for adjusting its lying board |
| CN1792331A (en) * | 2004-12-21 | 2006-06-28 | 西门子公司 | Method of imaging medical equipment |
| US20070003020A1 (en) * | 2005-06-30 | 2007-01-04 | Jiang Hsieh | Systems and methods for compensating for table sag |
| US20100040197A1 (en) * | 2008-08-15 | 2010-02-18 | Koninklijke Philips Electronics N. V. | Large bore pet and hybrid pet/ct scanners and radiation therapy planning using same |
| CN101879069A (en) * | 2009-05-08 | 2010-11-10 | 株式会社东芝 | The X ray computer laminagraph device |
| US20100287703A1 (en) * | 2009-05-15 | 2010-11-18 | Koninklijke Philips Electronics N. V. | Deflection compensating mechanism for patient imaging table |
| CN102019042A (en) * | 2010-11-26 | 2011-04-20 | 深圳市一体医疗科技股份有限公司 | Distortion compensation method and system for gamma-ray treatment bed |
-
2011
- 2011-05-31 CN CN2011101451705A patent/CN102805643A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08299323A (en) * | 1995-04-27 | 1996-11-19 | Line Seiki Kk | Deflection correcting device |
| US20020081008A1 (en) * | 2000-12-21 | 2002-06-27 | Wollenweber Scott D. | Imaging table sag measurement and compensation method and apparatus |
| US20020104163A1 (en) * | 2001-01-25 | 2002-08-08 | Siemens Aktiengesellschaft | Support device for an imaging medical examination apparatus and method for the operation thereof |
| US20030078489A1 (en) * | 2001-10-19 | 2003-04-24 | Koninklijke Philips Electronics N.V. | Multimodality medical imaging system and method with patient handling assembly |
| US20040223584A1 (en) * | 2003-03-14 | 2004-11-11 | Hans-Jurgen Kroner | Tomography imaging system with an acquisition unit and a patient positioning table with a horizontally movable patient board |
| CN1572256A (en) * | 2003-06-04 | 2005-02-02 | 西门子公司 | Patient examination support system and method for adjusting its lying board |
| CN1792331A (en) * | 2004-12-21 | 2006-06-28 | 西门子公司 | Method of imaging medical equipment |
| US20070003020A1 (en) * | 2005-06-30 | 2007-01-04 | Jiang Hsieh | Systems and methods for compensating for table sag |
| US20100040197A1 (en) * | 2008-08-15 | 2010-02-18 | Koninklijke Philips Electronics N. V. | Large bore pet and hybrid pet/ct scanners and radiation therapy planning using same |
| CN101879069A (en) * | 2009-05-08 | 2010-11-10 | 株式会社东芝 | The X ray computer laminagraph device |
| US20100287703A1 (en) * | 2009-05-15 | 2010-11-18 | Koninklijke Philips Electronics N. V. | Deflection compensating mechanism for patient imaging table |
| CN102019042A (en) * | 2010-11-26 | 2011-04-20 | 深圳市一体医疗科技股份有限公司 | Distortion compensation method and system for gamma-ray treatment bed |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103340644A (en) * | 2013-06-28 | 2013-10-09 | 沈阳东软医疗系统有限公司 | Image position compensating method and device |
| CN103340644B (en) * | 2013-06-28 | 2015-07-22 | 沈阳东软医疗系统有限公司 | Image position compensating method and device |
| US9355437B2 (en) | 2013-06-28 | 2016-05-31 | Shenyang Neusoft Medical Systems Co., Ltd. | Image position compensation method and apparatus |
| CN104586421A (en) * | 2014-12-31 | 2015-05-06 | 沈阳东软医疗系统有限公司 | Method and device for eliminating positioning eccentricity |
| US10568596B2 (en) | 2016-06-30 | 2020-02-25 | Shanghai United Imaging Healthcare Co., Ltd. | Table system and method for PET/CT imaging |
| US10820868B2 (en) | 2016-06-30 | 2020-11-03 | Shanghai United Imaging Healthcare Co., Ltd. | Table system and method for PET/CT imaging |
| CN109171794A (en) * | 2018-08-24 | 2019-01-11 | 上海联影医疗科技有限公司 | A kind of compensation the scanning bed of bed board VERTICAL DEFORMATION, scan method and computer-readable medium |
| CN109260612A (en) * | 2018-11-28 | 2019-01-25 | 上海联影医疗科技有限公司 | The location parameter detection method of hospital bed, method for correcting position, apparatus and system |
| CN112716730A (en) * | 2020-12-04 | 2021-04-30 | 上海西门子医疗器械有限公司 | Medical equipment and sickbed thereof |
| CN113425322A (en) * | 2021-06-25 | 2021-09-24 | 上海联影医疗科技股份有限公司 | Bed board movement control method and system, CT scanning system and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102805643A (en) | System for compensating bending of inspection bed | |
| US10172585B2 (en) | Tracking system for imaging machines and related apparatus | |
| US7545911B2 (en) | Imaging device and therapy facility having such a device | |
| US7712961B2 (en) | Methods and systems for improving 3D volume reconstruction from 2D X-ray images | |
| US7607833B2 (en) | Method for operating a medical image apparatus to correct for deflection of the patient support board | |
| CN1969757B (en) | Method and system for automatically determining regions in a scanned object | |
| CN103876774B (en) | A kind of scanning bed and compensate the sagging method and apparatus of its bed board | |
| RU2008142952A (en) | DEVICE FOR COMPENSATION OF LOCAL ERROR IN ELECTROMAGNETIC TRACKING SYSTEMS | |
| CN110799164B (en) | System and method for diagnosis and treatment | |
| JP5355849B2 (en) | X-ray CT system | |
| CN101900823B (en) | Method and device for correcting x-ray offset | |
| EP2699156B1 (en) | Patient localization system | |
| US20110296613A1 (en) | Medical table with a support board | |
| CN112842318A (en) | Imaging system object support desktop deflection delta correction | |
| US20090139032A1 (en) | Mechanism for Remotely Measuring Bed Deflection | |
| CN103860182A (en) | Method and system for determining position difference of examination couch and medical treatment appliance | |
| US7986988B2 (en) | Reference height calibration scheme for modular multi-modality medical imaging system | |
| CN110742610A (en) | Detection device, method for detecting motion of scanning bed and magnetic resonance imaging system | |
| US11096650B2 (en) | Direct acceleration measurement of a subject support | |
| CN205352323U (en) | Measurement system with multiple sensors | |
| CN204723078U (en) | Automatic calibration CT backrest | |
| US20060093093A1 (en) | Method and system for measuring table sag | |
| CN204072638U (en) | A kind of medical work platform that can compensate bed board heavy burden and bend | |
| CN206924082U (en) | Medical bed body auxiliary support apparatus | |
| US10765387B2 (en) | Position adjustment device for flat panel detector, position adjustment method for flat panel detector, and radiotherapy apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121205 |