CN102772221A - CCD (charge coupled device) angle adjusting device for dentistry CT (Computed Tomography) imaging - Google Patents
CCD (charge coupled device) angle adjusting device for dentistry CT (Computed Tomography) imaging Download PDFInfo
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- CN102772221A CN102772221A CN2012102883378A CN201210288337A CN102772221A CN 102772221 A CN102772221 A CN 102772221A CN 2012102883378 A CN2012102883378 A CN 2012102883378A CN 201210288337 A CN201210288337 A CN 201210288337A CN 102772221 A CN102772221 A CN 102772221A
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Abstract
The invention discloses a CCD (charge coupled device) angle adjusting device for dentistry CT (Computed Tomography) imaging. The CCD angle adjusting device comprises a U-shaped hanging rack joint, a CCD hanging rack and a CCD mounting plate, wherein a CCD is fixed at the front part of the CCD mounting plate. The CCD angle adjusting device is characterized in that the CCD hanging rack is connected with the U-shaped hanging rack joint through a horizontal angle adjusting mechanism which drives the CCD hanging rack to rotate by taking a Z axis as a centre; the CCD mounting plate is connected with the CCD hanging rack through a translation adjusting mechanism which drives the CCD mounting plate to translate along an X axis, and meanwhile, the CCD mounting plate is connected with the CCD hanging rack through a vertical angle regulating mechanism which drives the CCD mounting plate to rotate by taking a Y axis as a centre to rotate; and the Z axis is perpendicular to the ground, the Y axis is perpendicular to a CCD receiving screen, and the X,Y and Z axes form a space rectangular coordinate system. The CCD angle adjusting device can be used for performing fine adjustment on the three-dimensional angle and displacement of the CCD so as to ensure that a connecting line of the CCD and the center point of an X ray source is accurately perpendicular to the CCD receiving screen and an X ray source launching mirror face, thereby improving the quality of a tomography image.
Description
Technical field
the present invention relates to a kind of dentistry CT imaging CCD angular adjustment apparatus.
Background technology
X ray image technology is very important diagnosis and treatment means in stomatology.Conventional common X-ray technique (RUGEN splinter, bite film, whole scenery piece etc.) is though easy and simple to handle, radiological dose is little; Be widely used; But what these technology obtained all is two dimensional image; There are problems such as structure forward laps, deformation of image, can not accurately reflect tooth, the isostructural three-dimensional information of periodontal, run into difficult diseases and often be difficult to make a definite diagnosis.Traditional CT can provide three-dimensional information, but its radiological dose big, cost an arm and a leg, to the lack of resolution of dental imaging, the application in stomatology is limited.Compare with these stomatology image technologies, emerging dentistry CT (cone-beam) has following remarkable advantage:
1. the spatial resolution of dentistry CT far above traditional CT: the minimum thickness of 320 layers of up-to-date traditional CT is also about 0.5mm; And the resolving range of dentistry CT is 0.076-O.4mm at present.Find also that in clinical practice dentistry CT shows that the picture quality of tiny anatomical structure such as tooth and periodontal tissue and maxillofacial bone bony structures is superior to traditional CT, also is more suitable for the needs of clinical oral.
2. the scanning dose of dentistry CT between 29-477uSv, relevant with the irradiation visual field (FOV) size that adopts.This dosage is merely the 1.5%-23.8% of traditional CT dosage (about 2000uSv).If change scanning position (tilting like chin) or use localised protection device (like the thyroid protector for collar), then dosage also can descend about 40%.At present, dentistry CT even can be below common whole scenery piece with dosage control.
existing dentistry CT formation comprises that mainly one is fixed on the x-ray source and the CCD at U-shaped hanger two ends, and the patient's head fixture between x-ray source and CCD.X-ray source sends X ray when images acquired, and ray passes patient's head, projects on the CCD and forms images.Need the line of the central point of x-ray source and CCD to launch minute surface in the actual imaging process perpendicular to CCD receiving screen and x-ray source; The projected image that obtains like this is used for reconstruction just can obtain high-quality faultage image, otherwise will have influence on the faultage image after the reconstruction.Yet above-mentioned existing dentistry CT can only be by the synchronously rough adjusting x-ray source of U-shaped hanger and the CCD position with respect to patient's head fixture; Lack independently convenient mechanism arrangement of carrying out fine adjustment for CCD (or x-ray source) three-dimensional perspective and displacement; Thereby the line of central point that also just can't guarantee x-ray source and CCD accurately and reliably causes the final faultage image quality that obtains not good perpendicular to CCD receiving screen and x-ray source emission minute surface.
Summary of the invention
the present invention seeks to: a kind of dentistry CT imaging CCD angular adjustment apparatus is provided; This device can carry out fine adjustment for three-dimensional perspective and the displacement of CCD; And easy to adjust, guarantee in actual dentistry CT imaging process, behind the orientation angle of having confirmed x-ray source with this; Can make the line of central point of CCD and x-ray source accurately perpendicular to CCD receiving screen and x-ray source emission minute surface through adjustment, thereby promote the faultage image quality the CCD angle.
technical scheme of the present invention is: a kind of dentistry CT imaging CCD angular adjustment apparatus; Comprise U-shaped hanger joint, CCD hanger and CCD installing plate; The anterior fixation of C CD of CCD installing plate; It is characterized in that it is that the level angle governor motion that the center rotates links to each other with the U-shaped hanger joint with the Z axle that said CCD hanger orders about it through one; And said CCD installing plate orders about its translational controlling mechanism along the translation of X axle by one and links to each other with the CCD hanger, and also to order about it by one be that the vertical angle governor motion of center rotation links to each other with the CCD hanger with the Y axle to the CCD installing plate simultaneously, and wherein said Z axle is perpendicular to ground; The Y axle is perpendicular to the CCD receiving screen, and X, Y, three of Z constitute rectangular coordinate system in space.
are further; The actual preferred constructive form of the governor motion of level angle described in the present invention is following: it comprises that fixing or one is located on the said U-shaped hanger joint and is located at CCD hanger top with the Z axle as the rotating member of axis of rotation, fixing or one and is used to hold the rotation dimple of rotating member and is fixed on the pressing plate that rotation dimple top is used for vertically locking rotating member; Be arranged with two level angles that are positioned at its axis of rotation both sides on the said rotating member and regulate block; And corresponding each level angle is regulated the equal spiral shell of block and is provided with a pair of level angle and regulates bolt on the said rotation dimple, and the every pair of level angle regulates that bolt is all coaxial to be arranged and clip said level angle in opposite directions and regulate block.
are further; The actual preferred constructive form of translational controlling mechanism described in the present invention is following: it comprise horizontal spiral shell be located on the CCD hanger a pair of translational adjustment bolt be located at the translational adjustment bumping post at CCD installing plate rear portion, said two translational adjustment bolts are coaxial arranges and clips said translational adjustment bumping post in opposite directions.
are further; The actual preferred constructive form of the governor motion of vertical angle described in the present invention is following: it comprises that vertical spiral shell the pair of vertical angle adjustable bolt of being located at CCD installing plate rear portion and the vertical angle of being located at CCD hanger sidepiece regulate block, and said two vertical angles regulate that bolt is coaxial to be arranged and clip said vertical angle in opposite directions and regulate block.
further; The thin quality award from the ministry structure of the translational controlling mechanism among the present invention is following: the translational adjustment plate of fixing or be integrally formed with vertical layout on the said CCD hanger; Said translational adjustment plate be provided with supply the translational adjustment bumping post support into perforate; Said two translational adjustment bolts are established from the horizontal spiral shell of the sidepiece of translational adjustment plate and are penetrated in the perforate, and clip said translational adjustment bumping post.
further; The thin quality award from the ministry structure of the vertical angle governor motion among the present invention is following: the bolt installing plate of two lateral arrangement is up and down fixed or is integrally formed with at said CCD installing plate rear portion, and said two vertical angles adjusting bolt spiral shell respectively is located on said two bolt installing plates.
the present invention is when concrete the use, and is the same with routine techniques, and the U-shaped hanger joint is through bolt to U-shaped hanger one end, and the other end of U-shaped hanger is fixing x-ray source then.At first through regulate the U-shaped hanger guarantee CCD, x-ray source and be positioned between the two patient's head fixture substantially in line; Then the position angle of x-ray source is implemented pre-determined bit, even if with carrying out fine tuning to the angle position of CCD through this device provided by the invention.Wherein the level angle governor motion is mainly regulated CCD and is wound the anglec of rotation perpendicular to the Z axle on ground, and when need to prove that carrying out level angle regulates, rotating member is actually and does not rotate, rotation be the CCD hanger with its on the rotation dimple.Said vertical angle governor motion is then mainly regulated CCD and is wound the deviation angle (adjustable angular range is very little) perpendicular to the Y axle of its receiving screen, and translational controlling mechanism is then mainly regulated the displacement of CCD along the X axle.Said X, Y, Z axle constitute rectangular coordinate system in space, all are imaginary axis.
Advantage of the present invention is:
this dentistry CT imaging CCD angular adjustment apparatus 1. provided by the invention; It can carry out fine adjustment to three-dimensional perspective and the displacement of CCD; And easy to adjust, guarantee in actual dentistry CT imaging process, behind the orientation angle of having confirmed x-ray source with this; Can make the line of central point of CCD and x-ray source accurately perpendicular to CCD receiving screen and x-ray source emission minute surface through adjustment, thereby promote the faultage image quality the CCD angle.
this dentistry CT imaging CCD angular adjustment apparatus 2. provided by the invention, it is simple in structure, and parts are few, assembling and easy to use, low cost of manufacture has advantages of high practicability.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is structural front view of the present invention (being assembled on the U-shaped hanger);
Fig. 2 is the left view (being assembled on the U-shaped hanger) of Fig. 1;
Fig. 3 is the right view (being assembled on the U-shaped hanger) of Fig. 1;
Fig. 4 is the vertical view of Fig. 1;
Fig. 5 is that the A-A of Fig. 1 is to profile;
Fig. 6 is a perspective view of the present invention.
wherein: 1, U-shaped hanger joint; 2, CCD hanger; 3, CCD installing plate; 4, CCD; 5, rotating member; 6, rotation dimple; 7, pressing plate; 8, level angle is regulated block; 9, level angle is regulated bolt; 10, translational adjustment bolt; 11, translational adjustment bumping post; 12, vertical angle is regulated bolt; 13, vertical angle is regulated block; 14, translational adjustment plate; 15, perforate; 16, bolt installing plate; 17, U-shaped hanger.
The specific embodiment
embodiment: combination Fig. 1-shown in Figure 6; This dentistry CT imaging CCD angular adjustment apparatus provided by the invention; It has U-shaped hanger joint 1, CCD hanger 2 and CCD installing plate 3; CCD installing plate 3 is anterior through screw fixation of C CD4, and it is that the level angle governor motion of center rotation links to each other with U-shaped hanger joint 1 with the Z axle that said CCD hanger 2 orders about it through one, and said CCD installing plate 3 orders about its translational controlling mechanism along the translation of X axle by one and links to each other with CCD hanger 2; It is that the vertical angle governor motion that the center rotates links to each other with CCD hanger 2 with the Y axle that while CCD installing plate 3 also orders about it by one; Wherein said Z axle is perpendicular to ground, and the Y axle is perpendicular to the CCD receiving screen, and X, Y, three of Z constitute rectangular coordinate system in space.
specifically combine Fig. 1-shown in Figure 6; Being constructed as follows of the governor motion of level angle described in the present embodiment: its have that one is located on the said U-shaped hanger joint 1 and with the Z axle as the rotating member 5 of axis of rotation, through be bolted to CCD hanger 2 tops be used to hold rotating member 5 rotation dimple 6 and through be bolted to rotation dimple 6 tops be used for vertically locking rotating member 5 about two block pressur plates 7, specifically see Fig. 4 and shown in Figure 6.Said rotating member 5 bottom symmetries are integrally formed with two level angles that are positioned at its axis of rotation both sides and regulate block 8, and corresponding each level angle adjusting block 8 equal spiral shell are provided with a pair of level angle adjusting bolt 9 on the said rotation dimple 6, specifically see shown in Figure 1; The every pair of level angle regulates that bolt 9 is all coaxial to be arranged and clip said level angle in opposite directions and regulate block 8, specifically combines Fig. 4, Fig. 5 and shown in Figure 6.
combine Fig. 1, Fig. 2, Fig. 3, Fig. 5 and shown in Figure 6, being constructed as follows of translational controlling mechanism described in the present embodiment: it has the translational adjustment bumping post 11 that one is located on the CCD hanger 2 and translational adjustment plate 14, the horizontal spiral shell vertically arranged are located at a pair of translational adjustment bolt 10 on the translational adjustment plate 14 and are located at CCD installing plate 3 rear portions.The bumping post of translational adjustment described in the present embodiment 11 is screws that hammer into CCD installing plate 3 rear portions, specifically sees shown in Figure 5.Said translational adjustment plate 14 be provided with supply translational adjustment bumping post 11 support into perforate 15; Said two translational adjustment bolts 10 are established from the coaxial spiral shell in opposite directions of the sidepiece of translational adjustment plate 14 and are penetrated in the perforate 15; And clip said translational adjustment bumping post 11, specifically see Fig. 1 and shown in Figure 6.
combine Fig. 1, Fig. 2 and shown in Figure 6; Being constructed as follows of the governor motion of vertical angle described in the present embodiment: it has pair of vertical angle adjustable bolt 12 that vertical spiral shell is located at CCD installing plate 3 rear portions and the vertical angle of being located at CCD hanger 2 sidepieces and regulates block 13, and said two vertical angles regulate that bolt 12 is coaxial to be arranged and clip said vertical angle in opposite directions and regulate block 13.The installing plate of CCD described in the present embodiment 3 rear portions are integrally formed with the bolt installing plate 16 of two lateral arrangement up and down, and said two vertical angles adjusting bolt 12 spiral shell respectively is located on said two bolt installing plates 16; And vertical angle described in the present embodiment is regulated block 13 and is fixed on translational adjustment plate 14 sidepieces on the CCD hanger 2 through screw.
combination Fig. 1-shown in Figure 3; The present invention is when concrete the use; The same with routine techniques, U-shaped hanger joint 1 is through bolt to U-shaped hanger 17 (part of only drawing among a figure) end, and the other end of U-shaped hanger 17 is fixing x-ray source (not shown) then.At first through regulate U-shaped hanger 17 guarantee CCD4, x-ray source and be positioned between the two patient's head fixture substantially in line; Then the position angle of x-ray source is implemented pre-determined bit, even if with carrying out fine tuning to the angle position of CCD4 through this device provided by the invention.Wherein the level angle governor motion is mainly regulated CCD4 and is wound the anglec of rotation perpendicular to the Z axle on ground, and when need to prove that carrying out level angle regulates, rotating member 5 is actually and does not rotate, rotation be CCD hanger 2 with its on rotation dimple 6.Said vertical angle governor motion is then mainly regulated CCD4 and is wound the deviation angle (adjustable angular range is very little) perpendicular to the Y axle of its receiving screen, and translational controlling mechanism is then mainly regulated the displacement of CCD4 along the X axle.Said X, Y, Z axle constitute rectangular coordinate system in space, all are imaginary axis.
the foregoing description certainly only are explanation technical conceive of the present invention and characteristics, and its purpose is to let the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All modifications that the spirit of main technical schemes is done according to the present invention all should be encompassed within protection scope of the present invention.
Claims (6)
1. dentistry CT imaging CCD angular adjustment apparatus; Comprise U-shaped hanger joint (1), CCD hanger (2) and CCD installing plate (3); The anterior fixation of C CD of CCD installing plate (3) (4); It is characterized in that it is that the level angle governor motion that the center rotates links to each other with U-shaped hanger joint (1) with the Z axle that said CCD hanger (2) orders about it through one; And said CCD installing plate (3) orders about its translational controlling mechanism along the translation of X axle by one and links to each other with CCD hanger (2), and also to order about it by one be that the vertical angle governor motion of center rotation links to each other with CCD hanger (2) with the Y axle to CCD installing plate (3) simultaneously, and wherein said Z axle is perpendicular to ground; The Y axle is perpendicular to the CCD receiving screen, and X, Y, three of Z constitute rectangular coordinate system in space.
2. dentistry CT imaging CCD angular adjustment apparatus according to claim 1; It is characterized in that said level angle governor motion comprises that fixing or one is located at that said U-shaped hanger joint (1) is gone up and be located at CCD hanger (2) top as the rotating member (5) of axis of rotation, fixing or one being used to hold the rotation dimple (6) of rotating member (5) and being fixed on the pressing plate (7) that rotation dimple (6) top is used for vertically locking rotating member (5) with the Z axle; Be arranged with two level angles that are positioned at its axis of rotation both sides on the said rotating member (5) and regulate block (8); And said rotation dimple (6) go up corresponding each level angle regulate block (8) all spiral shell be provided with a pair of level angle and regulate bolt (9), the every pair of level angle regulates that bolt (9) is all coaxial to be arranged and clip said level angle in opposite directions and regulate block (8).
3. dentistry CT imaging CCD angular adjustment apparatus according to claim 1; It is characterized in that said translational controlling mechanism comprises that horizontal spiral shell is located at a pair of translational adjustment bolt (10) on the CCD hanger (2) and is located at the translational adjustment bumping post (11) at CCD installing plate (3) rear portion, said two translational adjustment bolts (10) are coaxial arranges and clips said translational adjustment bumping post (11) in opposite directions.
4. according to claim 1 or 3 described dentistry CT imaging CCD angular adjustment apparatus; It is characterized in that the vertical angle that said vertical angle governor motion comprises that vertical spiral shell is located at the pair of vertical angle adjustable bolt (12) at CCD installing plate (3) rear portion and is located at CCD hanger (2) sidepiece regulates block (13), said two vertical angles regulate that bolts (12) are coaxial to be arranged and clip said vertical angle in opposite directions and regulate block (13).
5. dentistry CT imaging CCD angular adjustment apparatus according to claim 3; It is characterized in that the last translational adjustment plate (14) of fixing or being integrally formed with vertical layout of said CCD hanger (2); Said translational adjustment plate (14) be provided with supply translational adjustment bumping post (11) support into perforate (15); Said two translational adjustment bolts (10) are established from the horizontal spiral shell of sidepiece of translational adjustment plate (14) and are penetrated in the perforate (15), and clip said translational adjustment bumping post (11).
6. dentistry CT imaging CCD angular adjustment apparatus according to claim 4; It is characterized in that said CCD installing plate (3) rear portion fixes or be integrally formed with the up and down bolt installing plate (16) of two lateral arrangement, said two vertical angles regulate bolts (12) respectively spiral shell be located on said two bolt installing plates (16).
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CN201210288337.8A CN102772221B (en) | 2012-08-14 | 2012-08-14 | CCD (charge coupled device) angle adjusting device for dentistry CT (Computed Tomography) imaging |
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CN201210288337.8A CN102772221B (en) | 2012-08-14 | 2012-08-14 | CCD (charge coupled device) angle adjusting device for dentistry CT (Computed Tomography) imaging |
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CN102772221B CN102772221B (en) | 2014-02-26 |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104939862A (en) * | 2015-07-03 | 2015-09-30 | 苏州海斯菲德信息科技有限公司 | Angle adjusting device for small animal CT flat panel detector |
CN104939860A (en) * | 2015-06-25 | 2015-09-30 | 苏州海斯菲德信息科技有限公司 | Small animal CT imaging X-ray source angle adjusting device |
CN106963405A (en) * | 2017-03-22 | 2017-07-21 | 浙江大学 | A kind of novel mouth Cone-Beam CT |
WO2021114791A1 (en) * | 2019-12-11 | 2021-06-17 | 同方威视技术股份有限公司 | Adjustment and positioning device and method for ray source assembly, and radiation scan imaging apparatus |
CN113606458A (en) * | 2021-07-30 | 2021-11-05 | 苏州康代智能科技股份有限公司 | Angle and distance precise adjusting device in three-dimensional space and optical detection equipment |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN104939860A (en) * | 2015-06-25 | 2015-09-30 | 苏州海斯菲德信息科技有限公司 | Small animal CT imaging X-ray source angle adjusting device |
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CN113606458A (en) * | 2021-07-30 | 2021-11-05 | 苏州康代智能科技股份有限公司 | Angle and distance precise adjusting device in three-dimensional space and optical detection equipment |
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