CN105934201A - Generating dental panoramic images - Google Patents
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- 238000003384 imaging method Methods 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims abstract description 38
- 210000002455 dental arch Anatomy 0.000 claims description 17
- 230000000007 visual effect Effects 0.000 claims description 16
- 238000003325 tomography Methods 0.000 claims description 15
- 230000005855 radiation Effects 0.000 claims description 13
- 238000004587 chromatography analysis Methods 0.000 claims description 4
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- 210000003484 anatomy Anatomy 0.000 description 20
- 230000008569 process Effects 0.000 description 16
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- 238000010276 construction Methods 0.000 description 6
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- 238000004458 analytical method Methods 0.000 description 2
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/51—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for dentistry
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- A—HUMAN NECESSITIES
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- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B6/461—Displaying means of special interest
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- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
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- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
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Abstract
The invention generally relates to generating digital dental panoramic images from multiple frame images acquired during a dental panoramic imaging scan about a patient's head. This generating includes using information of location and orientation of the x-ray beam and the x-ray detector at times when taking the frames in the procedure of summing information of the frames.
Description
Technical field
The present invention relates generally to dental panoramic imaging, more specifically it relates to from about patient's
The multiple two field pictures obtained during the dental panoramic image scanning of head produce digital dental panorama sketch
Picture.
Background technology
The traditional operation principle of panoramic x-ray apparatus includes: move about X-ray beam at film
While, the head around patient drives x-ray source and can so that dental arch will be as flat
Face picture is imaged on film.
This basic operation of traditional dental panoramic imaging is included in x-ray source, image information
Respective mutual movement is produced between receptor and patient.This movement is produced although existing
Several probabilities, but modal configuration is, by X in the way of being separated from each other a segment distance
Radiographic source and image information receiver attach on support arm, and this arm is then about motionless patient
Move in a particular manner.In this case, i.e. suffer to obtain the desired layer in subject
Clear (sharp) image of dental arch layer in person's head, the translational speed of film must be especially
With X-ray beam along want imaging desired layer strafe velocity correlation.By this configuration, Huan Zhetou
Undesirable structure before and after desired layer in portion is blurred and invisible.
In traditional panoramic imagery, by the wink of the thickness of layer clearly taken pictures with support arm
Time center of rotation be directly proportional to the distance of film level, be inversely proportional to the width of multiplying power and beam.
This basic form of panoramic imagery can be expressed as follows
V1/v0=L1/L0
V0=ω r
Here,
L0=is from the distance of the point of X-ray tube focus F to the subject in given time imaging；
L1=is from the distance of X-ray tube focus F to X-ray film (detector) plane；
ω=about the angular velocity of rotary motion of instantaneous centre of rotation；
This point of the subject of r=imaging is to the distance of this instantaneous centre of rotation；And
The speed of the picture point in v1=film (detector) plane.
Thus, speed v 1 and film during panoramic imaging scan relative to being incident on film
The speed that X-ray beam moves is relevant.About digital image, when using so-called TDI imaging skill
During art (time delay integration), make the transfer rate by the pixel charge of detector and film
The speed of movement is corresponding.Therefore, when implementing scan process and electric charge transmission to defer to this imaging
Say in the sense that having completed the obfuscation of the layer outside desired layer during formula, the figure read from sensor
As data will be corresponding with panoramic film image.In this case, owing to reading from sensor
Data have represented that layer corresponding with speed v 1, therefore, as long as being concerned about and selecting layer to be illustrated
Analysis imaging layer, i.e. allows to be exposed rear image procossing, it is not required that and will not enter
OK.
The digital panoramic imaging of prior art also includes so-called FT (frame transmission) technology.When making
With FT or during image scanning, shoot several single overlapping frame other technology any time,
When hope viewing is identical with the layer that can obtain when deferring to and being given above traditional panoramic imagery formula
Layer time, the overlapping degree that should make to build frame when seeming layer clearly is corresponding with speed v 1.
The advantage that frame technique brings is, the overlap of the frame owing to using in image procossing
Degree determines the layer that is relatively enhanced and other will be blurred of layer, therefore, after exposition,
Tomography layer can be changed to a certain extent by changing overlapping degree.The journey that layer can change
Degree is depended on frame data and how and is obtained by what kind of means.But, typically
Limit change (marginal change) on ground, the only position of layer is possible.
And, although the frame panorama system of prior art includes the possibility changing clear layer marginally
Property, but the overlapping degree used in picture construction is based on certain predetermined scheme.These schemes one
As include that overlapping and panoramic picture the Practical Calculation of standard using frame does not comprise meeting and imaging system
The relevant any ginseng of the actual imaging geometry (geometry) at the exposure position of frame
Number.
Additionally, due to the view direction of anatomical structure is mainly by several for obtaining the imaging of frame data
What structure domination, i.e. by image-forming block (x-ray source and the image information skill when getting frame data
Device) the geometry domination of mobile institute foundation, therefore, the system of prior art locks into this sight
See direction, reason be they lack change panoramic picture or the viewing of their some are shown
The parts in direction.
Although additionally, may in practice compared with when using more conventional continuous scanning technique,
This frame imaging technique makes it possible for broader detector area, but existence rules, such as
Do not have with reading fast enough during image scanning in frame and the multiplying power in single frame
The criterion that the necessity of big amendment is relevant, the restriction in practice is set as by these criterions the most
The width of the detector that can use in the dental panoramic frame imaging of prior art.
Summary of the invention
The main purpose of invention and preferred embodiments thereof is to provide a kind of system, by this is
System, can knowing about the true imaging geometry used in each exposure position, with imaging process
Know and use the frame image data obtained in single panoramic imaging scan relatively, be used for provide
The new probability of panoramic dental image is produced after exposition from frame data.The second of the present invention
Purpose comprises, enabling not only from the frame image data obtained single panoramic imaging scan
Produce more than one tomography layer, but also build and show tooth viewed from different directions
The image of bow or parts of images.
Can be reached following by the embodiments of the invention limited in the appended claims
The these and other objects of the present invention discussed.The core of the present invention is, it is achieved panoramic scanning,
Make the information of imaging geometry structure, i.e. detector and X-ray tube focus and therefore X penetrate
The position of wire harness and the information of orientation be learned at their exposure position and this information then
It is used for calculating panoramic dental image.
Various embodiments of the present invention provide advantage include can from single frame data group produce from
The probability of the panoramic dental image of more than one direction viewing.When changing sight virtually
When seeing angle, may become from the specific sightless anatomical features of other view direction.
It is therefoie, for example, can avoid owing to needing to re-shoot patient that image causes to X-ray
Again expose.Additionally, embodiments discussed below provides use than general at dentistry frame panorama
The probability of the detector that the detector of use is wide in imaging.
Accompanying drawing explanation
Hereinafter by referring to accompanying drawing the present invention and some of preferred embodiment will be discussed, wherein,
Fig. 1 represents the example of panoramic imaging device,
Fig. 2 represents some in the basic element of character of the system for realizing embodiments discussed below,
Fig. 3 a represents that panoramic dental image, Fig. 3 B represent can therefrom produce panoramic dental image
Single two field picture among several two field pictures,
Fig. 4 represents each single overlapping frame and also has representative to move to new when imaging detector
The line of the vertical cross section of the anatomical structure projected in the various location of frame during exposure position,
Fig. 5 represents the exemplary plot of the principle that panoramic imagery processes according to an embodiment of the invention,
Fig. 6 represents the step of the method for the principle of the application present invention, and
Fig. 7 represents the hardware structure of the information processing/computer system that can use when realizing the present invention
The schematic diagram become.
Detailed description of the invention
With reference to non-limiting example that is shown in the drawings and that describe in detail in the following description,
More completely explain embodiment discussed here and various feature thereof and the details having superiority.Known
Parts and the description for the treatment of technology be omitted, to avoid unnecessarily obscuring embodiment here.
Example used herein is only used to beneficially to understand the enforceable mode of embodiment here also
And further such that those skilled in the art can implement embodiment here.Therefore, these examples
Son is not necessarily to be construed as limiting the scope of embodiment here.
Should also be understood that embodiment is exemplary.Such as, " one is mentioned somewhere in description
Kind ", in the case of " one " or " some " embodiments, this does not necessarily implies that and should be mentioned that
Same (with some) embodiments or this feature are only applicable to single embodiment.Different embodiments
Single feature can be combined to provide other embodiment, even if this is not in given linguistic context
In be specifically disclosed.
Embodiments of the invention discussed here use along X-ray beam during dental arch shooting overlapping frame
With position and the orientation information of X-ray detector, to produce panoramic dental image.Such as, with
The embodiment of lower discussion allows user from annular region i.e. from more than one view direction viewing tooth
The specific focus of bow.Therefore, the embodiments described herein can allow user to watch such as dentistry
The special characteristic between patient teeth in panorama radiograph, these features may passed through
Use in the method for prior art and another dental panoramic radiograph of configuration generation invisible.
In the accompanying drawings, Fig. 1 provides the structure of exemplary panorama x-ray imaging device.This device
Including matrix 27 and the cylindrical frame part 12 that is fixed on matrix 27 by its lower end.Support
Arm 13 (its lid not shown) is rotatably mounted on the upper end of frame part 12.Phase
Accordingly, be rotatably mounted on the outer end of support arm 13 is another support arm, i.e. middle
Support arm 14, the outer end of this intermediate supports arm 14 is rotatably mounted further usually by
It is referred to as the An imaging arm 15 of C-arm.C-arm 15 supports image-forming block, i.e. x-ray source 26
With visual detector 16.And, location supports 25 and is attached in cylindrical frame part 12,
To help the people being positioned to be imaged.As the replacement in cylindrical frame part 12, rotatable
Support arm 13 also can be installed on wall or ceiling structure.
For the sake of clarity, the structure shown in Fig. 1 is simplified.Such as, the most do not show
Go out the stressed member of transfer member as arm configuration 13～15.Similarly, in simplified form
Stepping motor 1 for swing boom configuration 13～15 is shown.
Device shown in Fig. 1 and control system (not shown in figure 1) thereof provide and are used for moving C
The example of the structure of the center of rotation of shape arm 15, this C-arm 15 carries image-forming block to pass through
The track using the substantially any shape of desired center of rotation performs around patients head entirely
Scape image scanning.The structural change of dental panoramic imaging device, in the simplest situations, becomes
As device can allow the imaging geometry structure fixing with regard to.
The basic module of the system for realizing the present invention shown in Fig. 2 includes the control of imaging device
System CS processed, this control system CS comprises one or more arms 13～15 of this device of driving
Motor 1 or be connected with the operation electronic device operation of motor 1 and detector 16.This is
System includes for recording frame image information and the storage about the information etc. about imaging geometry structure
Device M, connect for creating processing component IP of panoramic picture, the performance screen S of image and user
Mouth UI.
Fig. 3 A represents typical panoramic dental image 200.When digital panoramic image 200 is by entirely
When the frame image data obtained during scape image scanning builds, Fig. 3 B can be considered representative and sweep
Retouch hundreds of partly overlapped in two field picture 300 of period shooting.Fig. 4 then table
Show the independent overlapping frame 310,315,320 that obtains during panoramic imaging scan how can by with
In the principle building digital panoramic image 200.Line vertically across frame 310,315,320
210 representatives comprise each of the image informations of the same thin vertical cross section of the anatomical structure being imaged
The position of the pixel column in individual frame.This image information that these row comprise is used for structure will be rear
The pixel column C of final digital panoramic image 200 that face discusses in more detail, to be produced.No
Intersect and the most do not comprise the specific section of the anatomical structure represented about line 210 with line 210
The frame of shooting before frame 310 and after frame 320 of information will be helpless to the panoramic picture produced
This particular column C of 200.
Fig. 5 represents the schematic diagram of the principle of the panoramic imagery process explaining the present invention.This process makes
With here by be referred to as the curve of virtual panoramic curve 400 and image-forming block during exposing
Position in the coordinate system of this curve and the data of orientation.In other words, in greater detail below
As description, this process includes to represent the position of tomography layer to be produced and shape
Virtual panoramic curve 400 is placed on the coordinate system of the imaging geometry structure used when photographed frame data
In.
In Figure 5, virtual panoramic curve 400 illustrates several point (P1, P2, P3, P4),
Each in these points can be considered with will the section of anatomical structure shown in panoramic picture
Position corresponding.In other words, each point (P1, P2 etc.) represents the digital panoramic figure produced
The position of the perpendicular layers of the dental arch being illustrated as single pixel column in Xiang.
Fig. 5 illustrates two exposure positions further, i.e. x-ray source during exposure and detector
(E ', E "), the most namely run through the anatomical structure being imaged and incide inspection in position
Survey the position of the X-ray beam of device.When this imaging geometry structure is known, can throw wherein
Shadow P ' falls each point P's determined at each in exposure position on the detector on detector
The position of projection P '.These subpoints P ' determine that represent the set point PN of anatomical structure, want
Pixel column on the detector building the row C of panoramic picture, this projection P-> P ' can be regarded
For limiting the projecting direction of the some P about specific single frame 300.
From fig. 5, it can be seen that in the first exposure position E ' in exposure position, from lonizing radiation
The projection P ' 2 of the some P2 of the focus viewing in source falls and is relatively far away from detection on detector (frame)
The position at the center of device, and in second position E " in, " 2 substantially fall in detector to projection P
Center.This is to comprehend at the picture construction of prior art added up to by some standard prior defined procedures
Situation about missing during the row of overlapping frame, and embodiment discussed here makes it possible to based on imaging several
The practical intelligence of what structure selects the row for building panoramic picture.In other words, as basis
Certain standard total agreement only adds the replacement of the column information of overlapping frame, determines when when shooting image
When the instantaneous position of the focus of X-ray beam is watched, the projection of any specified point P1, P2 etc.
Residing this particular column of each in two field picture, and calculating the panoramic picture that produces
These row specifically used during row C.
Known imaging geometry structure, i.e. the x-ray source during image scanning and the position of detector
Put and be orientated, also become able to by change the shape of panoramic curve 400 or orientation or this two
Person, the most so to calculate the different layer of anatomical structure but also builds and show from different directions
The subject layer of viewing.By considering slight by about a P4 of the panoramic curve 400 of Fig. 5
Rotate counterclockwise, it will be appreciated that this feature of the present invention.Consider image space E ' and E ", this meeting
Make projection P ' 2 and P " 2 more towards the left side of detector (from the focus direction of x-ray source
On the frame of viewing), therefore, different pixel column information can be selected for building panorama sketch
Picture.These different row thus not only represent different layers, and represent Fig. 5 institute of subject
The different visual angles beyond visual angle shown.
It is configured in the coordinate system of imaging geometry structure in principle, it is possible to use along any orientation
The virtual panoramic curve 400 of any shape.Even if this allows to build has the most general of Fig. 1
The chromatography of shape that can not create only by the Mechanical Moving that the wall of this device constructs of device
Imaging layer.
As on the other hand, it may be determined that for the single office of any number of some P1, P2 etc.
Portion's viewing vector D.In addition to discussing above by reference to Fig. 5, the most also comprise vector D
To represent the desired local view direction of some P2.Such vector D can be used for determining generation
The weighter factor of the pixel value of the row of the frame of specified point P1, P2 etc. of table anatomical structure.Such as,
From fig. 5, it can be seen that vector D with by from the focus of radiation source and at subpoint P '
Angle between the projecting direction that the line terminated limits is at the second time exposure position E of Fig. 5, and " ratio exists
Exposure position E ' is bigger for the first time.When applying such embodiment, with the first exposure
The pixel value of the row of subpoint P ' 2 is compared, and the relatively small weight in picture construction can be composed
Give the subpoint P " pixel value of the row of 2 of the second exposure.When this principle is applied to the throwing of a P
During shadow P ', i.e. when the weight bigger than other projecting direction is endowed the picture of certain projecting direction
During element value, will become to be emphasised from the feature of the anatomical structure of favourable direction viewing.
Flow chart shown in Fig. 6 illustrates a method for optimizing of the principle realizing the present invention.At figure
In the first step 500 of 6 methods, read perform panoramic imaging scan during frame and these
Each exposure position of frame.Then, in step 510, it is thus achieved that be desirably used for the void of picture construction
Intending panoramic curve, this curve is divided into multiple somes P the most in step 520, or, in other words
Say, from multiple somes P (the most equidistantly) of this Curve selection, will be with the panorama produced with restriction
The point of the anatomical structure corresponding for row C of image.The single sight of a P can be determined in step 530
See direction D.
In practice, in view of the imaging geometry structure of panoramic imaging scan to be used for, preferably people
Know virtual panoramic curve or the multiple curve 400 being designed for picture construction so that imaging
Geometry reasonably will can produce this desired one or more layers.
All of data are currently available, then can start to produce the row of panoramic picture 200 to be built
C (step 540).First, in step 550, find corresponding with the row C of panoramic picture
Some P, and, as fruit dot P has determined that, then find relevant local view direction D.
Then, due to panoramic curve 400 and radiation source with each position when exposing each frame and orientation
It is known that therefore, each in frame can be performed such a and process (step 560), i.e.
First, in step 570, a P is projected on frame by the line along the focus being derived from radiation source.
In practice, about most frame, owing to being derived from the focus of x-ray source and through panoramic curve
On some P line non-intersect with most frame, therefore, there is not subpoint P ', but,
About remaining several, the some P that restriction is used for building in discussion by the subpoint P ' on frame represents
The pixel column (step 580 and 610) of particular frame of row C of panoramic picture.
In the case of determining the local view direction D of set point P, process and be additionally included in step
Determine in rapid 590 local view direction D be derived from x-ray source focus and with discuss in
Angle between the line that some P intersects.This angle is used as the weighter factor in step 600,
Make, the projecting direction of some P (or, in other words, with reference to Fig. 5, from P to P ' arrow
Amount) more deviate desired local view direction D, give in picture construction (step 610)
The weight of frame (that is, giving the pixel value of the subpoint P ' of frame) is the least.Complete this process (step
Rapid 620) after, by by the value of given row divided by the summation of the weighter factor of these row, finally
The pixel value of each row C of panoramic picture is normalized.
Procedures discussed above can be given to include in a most general sense: uses and passes through tooth
The some single overlapping frame 300 that section's panoramic x-ray imaging device shoots along dental arch, described dress
Put and include for producing X-ray beam and having focal x-ray source and there is pixel column
Visual detector, frame 300 is by around patients head's mobile x-ray source and visual detector
Shooting；Panoramic picture 200 is calculated by the information of aggregate frame 300；And by shooting
About the information aggregate frame 300 of X-ray beam and the position of X-ray detector and orientation during frame
Information, produces panoramic picture 200.Then, the total of information can comprise and determines about photographed frame
Time X-ray beam and one or more hope of information of the position of X-ray detector and orientation
The position of some P, thus, the total of the information of frame 300 comprises closes about one or more points P
One or more row C of meter panoramic picture 200.On the other hand, can produce and see from different directions
At least two panoramic picture 200 seen, thus it is possible to simultaneously, successively, as combination image
Or as moving image, over the display in the view (view) representing different directions
At least two image.
One embodiment may also include that to produce and represents the tomography represented by panoramic picture 200
The virtual panoramic curve 400 of layer, by this curve 400 and X-ray beam and X-ray detector
The information of position and orientation is placed in same group of coordinate；And according to curve 400 at this group coordinate
In position produce and represent the panoramic picture 200 of tomography layer.
Another embodiment is comprised the steps that to produce and represents the desired layer represented by panoramic picture 200
Analysis imaging layer, about X-ray beam and the void of the information of the position of X-ray detector and orientation
Intend panoramic curve 400；The row C of the panoramic picture 200 for producing, determines on curve 400
Hope point P；And by adding up to the some P watched from the focus of radiation source to be projected to
Those row of each individual frames 300, produce the row C of panoramic picture 200, this projection P-> P ' limit
The projecting direction of the fixed some P about specific individual frames 300.
About weighter factor, relevant process can be provided, to include: at least one some P is determined
Desired view direction D, thus, based on view direction D with by from the focus of radiation source to
Angle between the direction that the line of described some P limits the column count in individual frames 300 is weighted because of
Son；Then, when the information of aggregate frame 300, use described weighter factor, so that, give
The weight of the row giving frame is the least, then represent the described direction vector D of desired view direction with by
Angle between the direction that the line of the burnt point-to-point P of radiation source limits is the biggest.
The virtual panoramic curve used in embodiment discussed above can be considered to make it possible to close
The work of tomography layer is changed in a controlled manner in the imaging geometry structure for getting frame data
Have, and it may be additionally used for changing viewing anatomical structure or part thereof of direction.By changing
Become the shape of virtual panoramic curve or orientation or both and even apply local discussed above
View direction vector, can penetrate based on the same group of original X obtained in single panoramic imaging scan
Line frame image data builds the different images of dental arch.
The virtual panoramic curve for producing panoramic picture can be limited by the way of several are different
400.One preferably, first, produces the movement for image-forming block and meets above begging for
The curve of the basic panorama type of opinion.Due to the image-forming block in the panoramic imaging device of given type
Movement may often be such that fixing, or generally use the movement of identical several standards, therefore,
Can create and store the panoramic curve 400 corresponding with specific imaging process for using later.
It addition, can be such as by including relevant view direction and being had the means of linear transformation of a P
The virtual panoramic curve or the most used virtual panoramic that use before revising or store are bent
Line.Linear transformation can comprise rotation and translating sections.Amendment may also include use such as two dimension sample
The nonlinear mapping function of bar curved surface, it can be used for making panoramic curve deform.
Note that embodiments of the invention include the mode of novelty, which the most so creates
Panoramic dental image, and show them over the display.Such as, the X when photographed frame penetrates
When the information of wire harness and the position of X-ray detector and orientation can use, can be by about X-ray
Restraint the position with X-ray detector and the information aggregate frame information in a different manner of orientation, produce
Raw two or more panoramic pictures viewed from different directions, the while that this making it possible to again such as,
Successively, see from different directions as combination image or show over the display as moving image
The image seen.
Such as, can produce about X-ray beam and the position of X-ray detector and the information of orientation
The first and second virtual panoramic curves, the two curve is all represented and is represented by panoramic picture
Desired layer, the second curve is to produce from the first curve by changing the orientation of the first curve,
Then, the frame of acquisition during panoramic imagery processes can be aggregated in by the curve different about these
Information, calculates two panoramic pictures.Of course, it is possible to use the curve of more than two, such as,
The illusion of rotation dental arch can be produced by showing the panoramic picture changing view direction successively.Change
Sentence is talked about, and such embodiment can include that the order of the view direction according to image exists successively
Image is presented, with the sensation rotated over the display to people's dental arch on display.
Another embodiment comprises the steps that and produces some panoramic pictures viewed from different directions；For
Each this view direction, produces the some images representing different clear layer；Then, for
Each this view direction, one in the optional several images representing different clear layer with generation
View direction described in table, afterwards, with reference to more than, such as, can simultaneously, successively, as combination
Image or present the image of so selection as moving image over the display.
Use weighter factor discussed above can pass through at given some P according to panoramic curve
Viewing angle emphasizes that the row with main X-ray travel path are to strengthen different viewing angle more
The effect of degree.
Weighter factor is used to use the detector surface than being usually used in the application of dentistry frame panorama wide
The probability aspect of detector surface the most helpful.Total base when the frame data of prior art
When the overlay process of certain standard, the row being combined togather more likely are made not represent dissection knot
The same section of structure, further off the center of detector.This is owing to adding up to the unclear exposure of agreement
Overall imaging geometry structure shear really during process, i.e. image-forming block and hope produce
The mutual alignment of layer and the change of orientation.But, when using principle discussed here, can
Avoid owing to adding information to the row C of the panoramic picture 200 representing the anatomical location changed
Obscuring of the panoramic picture caused.Weighter factor may be alternatively used for compensating and changes multiplying power.
About embodiments of the invention, the one of the illusion producing the anatomical structure rotating into picture can
Can property be, only use a virtual panoramic curve, but based on it, by systematicness change with
The orientation of the local viewing direction vector D of the some P of upper discussion produces various panoramic picture.Always
On body, it is clear that, it is contemplated that show based on the frame data obtained in single panoramic imaging scan
The scope of the present invention of the anatomical structure of imaging includes revising virtual panoramic curve 400 and putting P's
The combination in any of the orientation of local direction vector D, including only revising the vector D selecting quantity,
To show the different layers of anatomical structure with different view, or display anatomical structure different layers or
Show the layer of anatomical structure with different view.
Embodiment discussed here makes it possible to the dentistry frame panoramic imagery for realizing embodiment
Using dental panoramic imaging device, this dental panoramic imaging device includes: has focal X and penetrates
Line source and the visual detector with several pixel column, described x-ray source and the detection of described image
Device is configured on device in the way of being separated from each other the first distance；For moving around patients head
Dynamic x-ray source and the driver part of detector；Comprise for controlling this device to shoot along dental arch
The control system of the parts of some single overlapping frame.Detector can be embodied as wider or than the
Two distances are wide, and, control system is configured to control this device with shooting width equal to the
The frame of two distances, second distance is about the 2～10% of described first distance.In one embodiment,
Distance between x-ray source and visual detector is preferably about 500～550mm.
Otherwise can not as it has been described above, embodiment discussed here also can make it possible to show
Make visible anatomical structure, at least in the situation that patient is not carried out another panoramic exposure process
Under can not.When changing visual angle, the details of the anatomical structure of imaging can become visible, and
Otherwise they can be sightless.Such as, tooth is filled and may be hindered so that dental arch
The tooth of another side visible, but change view direction and will eventually enable to such tooth
Visible.
Fig. 7 represents and illustrates information processing/computer system hard that can realize embodiments of the invention
The schematic diagram that part is constituted.It is single that the system 1000 of Fig. 7 includes that at least one processor or central authorities process
Unit (CPU) 1010.CPU 1010 is by system bus 1012 and such as random access memory
Device (RAM) 1014, read only memory (ROM) 1016 and input/output (I/O) are suitable
The various apparatus interconnections of orchestration 1018.I/O adapter 1018 can with such as dish unit 1011 and
The peripheral hardware of tape drive 1013 or the program storage device that can be read by system 1000 connect.
The invention of the present invention in system 1000 readable medium storage device instructs and in accordance with these
Instruction performs the method for embodiment here.System also include connect keyboard 1015, mouse 1017,
Other of speaker 1024, mike 1022 and/or such as touch panel device (not shown) is used
Family interface equipment and bus 1012 are to collect the user interface adapter 1019 of user's input.Separately
Outward, communication adapter 1020 connects bus 1012 and data processing network 1025, and, example
As, display adapter 1021 connects bus 1012 and can be presented as such as monitor, printer
Or the display device 1023 of the outut device of emitter.
Therefore, another embodiment includes dental panoramic imaging device, this dental panoramic imaging device
Including: have focal x-ray source and there is the visual detector of several pixel column, described X
Radiographic source and described visual detector are configured on device in the way of being separated from each other a segment distance；
For the driver part around patients head's mobile x-ray source and detector；Comprise for controlling
This device to shoot the control system of the parts of some single overlapping frame along dental arch；With for
The user interface of described control system transmitting control commands, control system comprises X during photographed frame
The record information of radiographic source and the position of X-ray detector and orientation and for by about
The information of described information aggregate frame and calculate panoramic picture to produce from the different side of at least two
To the parts of the panoramic picture of viewing, user interface comprises for being given and showing from least two
The parts of relevant at least one control command of at least two panoramic picture of different directions viewing.
The dental panoramic imaging device of the architectural feature with above paragraph may also used as including root
According to the control system of any embodiment discussed here and/or image procossing or with obtain and build
Image-related further feature.
The description of above specific embodiment will disclose the general essence of the embodiments herein comprehensively,
To such an extent as to other people can be by applying current knowledge to be prone in the case of without departing substantially from general concept
Revise these specific embodiments and/or make them appropriate for various application, therefore, this suitable
Should and be appreciated in the meaning of the equivalent of disclosed embodiment and scope with amendment.
Should be appreciated that word used herein and term are in order at the purpose describing rather than limiting.Cause
This, although describe embodiment here about preferred embodiment, but those skilled in the art
It is understood that in appended spirit and scope by the claims, can be revised and be implemented this
The embodiment of literary composition.
Claims (23)
1. for the method producing digital dental panoramic picture, including:
-use the some single weight shot by dental panoramic x-ray imaging device along dental arch
Folded frame (300), described device includes:
-be used for producing X-ray beam and having focal x-ray source；With
-there is the visual detector of pixel column,
Further, described frame (300) is by detecting around patients head's mobile x-ray source and image
Device shooting；And
-calculate panoramic picture (200) by the information of aggregate frame (300),
Wherein,
-panoramic picture (200) is by examining about the X-ray beam when photographed frame and X-ray
Survey the position of device and the information of the information aggregate frame (300) of orientation and produce.
Method the most according to claim 1, wherein, one or more hope point P's
Described information about the X-ray beam when photographed frame and the position of X-ray detector and orientation
Position is determined, and, the described total of the information of frame (200) comprise about one or
Multiple one or more row C wishing some P total panoramic picture (200).
Method the most according to claim 1 and 2, wherein,
The virtual panoramic of the tomography layer that-generation representative to be showed by panoramic picture (200) is bent
Line (400), the position of this curve (400) and X-ray beam and X-ray detector and taking
To described information be placed in same group of coordinate, and
-according to the described curve (400) position in described one group of coordinate, produce and represent chromatography
The panoramic picture (200) of imaging layer.
4. according to the method described in any one in claims 1 to 3, wherein,
The desired tomography layer that-generation representative to be showed by panoramic picture (200), pass
In X-ray beam and the virtual panoramic curve of the described information of the position of X-ray detector and orientation
(400),
-for the row C of panoramic picture (200) produced, determine on described curve (400)
Hope point P, and
-by the single frame adding up to the some P watched from the focus of radiation source to be projected to
(300) those row, produce the row C of panoramic picture (200), this projection P-> P ' restriction
Projecting direction about the some P of specific individual frames (300).
5. according to the method described in any one in claim 2～4, wherein,
-at least one some P is determined desired view direction D, and, based on view direction
D and by from the focus of radiation source to the direction that the line of described some P limits angle to list
Only column count weighter factor on frame (300), and
-when the described information of aggregate frame (300), use described weighter factor, so that,
The weight of the row giving frame is the least, then represent the described direction vector D of desired view direction with
By from the focus of radiation source to the direction that the line of described some P limits angle the biggest.
Method the most according to claim 5, wherein, by the pixel by given row C
It is worth the summation of the weighter factor divided by these row, carrys out the row C of the final panoramic picture of normalization (200)
Pixel value.
7. for the method producing and presenting digital dental panoramic picture, including:
-use the some single weight shot by dental panoramic x-ray imaging device along dental arch
Folded frame (300), described device includes:
-be used for producing X-ray beam and having focal x-ray source；
-there is the visual detector of pixel column；And
-the display that is connected with described device functionality,
Further, described frame (300) is by detecting around patients head's mobile x-ray source and image
Device shooting；
-calculate panoramic picture (200) by the information of aggregate frame (300), and
-present the panoramic picture (200) of so tomography layer of generation over the display,
Wherein,
-produce at least two panoramic picture (200) viewed from different directions, and
-simultaneously, successively, as combination image or as moving image, over the display in
Represent the described at least two image of the view from different directions.
Method the most according to claim 7, wherein, at least two panoramic picture (200)
Described generation comprise about the position of X-ray beam and X-ray detector when photographed frame and taking
To information by the way of at least two is different, add up to the information of described frame (300).
9. according to the method described in claim 7 or 8, wherein, described at least two panorama sketch
As (200) are presented according to the order of their view direction, the most over the display to be given
The sensation that dental arch rotates over the display.
Method the most according to claim 9, wherein,
-produce some panoramic pictures (200) viewed from different directions,
-for each this view direction, produce the some figures representing different tomography layers
Picture,
-for each this view direction, select to represent the described some of different chromatography imaging layer
In image one, to represent described view direction, and
-present the image so selected over the display.
Method described in 11. any one according to Claim 8～in 10, wherein, one or many
Individual wish that some P is about the X-ray beam when photographed frame and the position of X-ray detector and orientation
The position of described information is determined, and, the described total of the information of frame (200) comprise about
The one or more some P adds up to one or more row C of panoramic picture (200).
12. according to the method described in any one in claim 7～11, wherein,
-producing representative will be at the virtual panoramic of the tomography layer of the middle performance of panoramic picture (200)
Curve (400), the position of this curve (400) and X-ray beam and X-ray detector and
The described information of orientation is placed in same group of coordinate, and
-by about the described information of described curve (400) aggregate frame (300), produce from
The described at least two panoramic picture (200) of different directions viewing so that curve (400) edge
At least the first and second orientations are arranged in described one group of coordinate so that pay close attention in these orientations
Each,
-for the row C of panoramic picture (200) produced, determine on described curve (400)
Some P, and
-by the single frame adding up to the some P watched from the focus of radiation source to be projected to
(300) those row, produce the row C of panoramic picture (200), this projection P-> P ' restriction
Projecting direction about the some P of specific individual frames (300).
13. 1 kinds of dental panoramic imaging devices, including:
-have focal x-ray source (26) and there is the visual detector (16) of several pixel column,
Described x-ray source (26) and described visual detector (16) are to be separated from each other a segment distance
Mode is configured on this device；
-for around patients head's mobile x-ray source (26) and the driving of detector (16)
Parts (1)；
-comprise for controlling this device to shoot some single overlapping frame (300) along dental arch
Control system CS of parts；And
-for the user interface UI of described control system transmitting control commands, wherein,
When-control system CS is included in photographed frame (300), x-ray source (26) and X penetrate
The position of thread detector (16) and the information of orientation and for by about described position and
The information of information aggregate frame (300) of orientation calculate panoramic picture (200) with produce to
The parts IP of the panoramic picture (200) of few two different directions viewing, and
-user interface UI comprises for being given and show from the sight of described at least two different directions
The parts of at least one control command that at least two panoramic picture (200) seen is relevant.
14. devices according to claim 13, wherein, described control system CS comprises
For simultaneously, successively, represent from difference as combination image or as moving image performance
The parts of the described at least two image (200) of the view in direction.
15. according to the device described in claim 13 or 14, wherein, and described control system CS
Comprise the order for the view direction according to described image (200) and present described image successively
(200) to give to rotate the parts of the sensation of dental arch.
16. according to the device described in any one in claim 13～15, wherein, described control
System CS processed comprises mean for about x-ray source (26) and X when photographed frame (300)
Information aggregate frame in the way of at least two is different of the position of ray detector (16) and orientation
(300) information produces the parts IP of described at least two panoramic picture (200).
17. according to the device described in any one in claim 13～15, wherein, by based on
The described parts IP calculating panoramic picture (200) comprises about X-ray beam and X when photographed frame
The parts of the information of the position of ray detector and the information aggregate frame (300) of orientation.
18. devices according to claim 17, wherein, are used for calculating panoramic picture (200)
Described parts IP comprise the chromatography showed by panoramic picture (200) for producing representative and become
As layer virtual panoramic curve (400), this curve (400) and X-ray beam and X are penetrated
The position of thread detector and the described information of orientation are placed in same group of coordinate and according to described
The curve (400) position in described one group of coordinate produces the panoramic picture representing tomography layer
(200) parts.
19. according to the device described in claim 17 or 18, wherein, described for calculate
Parts IP comprises and desired to be chromatographed into by what panoramic picture (200) showed for producing representative
As layer, about X-ray beam and the void of the described information of the position of X-ray detector and orientation
Intend panoramic curve (400), described curve is determined for the row C of panoramic picture 200 produced
(400) hope point P on and by adding up to the some P quilt watched from the focus of radiation source
Those row of the single frame (300) projected to produce the row C's of panoramic picture (200)
Parts, this projection P-> P ' limits the projecting direction of the some P about specific single frame (300).
20. 1 kinds of dental panoramic imaging devices, including:
-have focal x-ray source (26) and there is the visual detector (16) of several pixel column,
Described x-ray source (26) and described visual detector (16) are to be separated from each other the first distance
Mode is arranged on device；
-for around patients head's mobile x-ray source (26) and the driving of detector (16)
Parts (1)；
-comprise for controlling this device to shoot some single overlapping frame (300) along dental arch
Control system CS of parts；
Wherein,
When-control system CS is included in photographed frame (300), x-ray source (26) and X penetrate
The position of thread detector (16) and the information of orientation and for by about described position and
The information of the information aggregate frame (300) of orientation calculates the parts IP of panoramic picture (200),
-described detector (16) is implemented as wider or wider than second distance, and
-described control system is configured to control imaging device with shooting width equal to second distance
Frame (300), described second distance is about the 2～10% of described first distance.
21. devices according to claim 20, wherein, the first distance about 500～550mm.
22. according to the device described in claim 21 or 22, wherein, is used for calculating panorama sketch
To be showed by panoramic picture (200) for producing representative as the described parts IP of (200) comprises
Tomography layer virtual panoramic curve (400), by this curve (400) and X-ray
The described information of bundle and the position of X-ray detector and orientation be placed in same group of coordinate and
Produce according to the described curve (400) position in described one group of coordinate and represent tomography layer
The parts of panoramic picture (200).
23. devices according to claim 22, wherein, for the described parts calculated
IP comprises for producing the desired tomography layer that representative to be showed by panoramic picture (200)
, about X-ray beam and the position of X-ray detector and orientation described information virtual entirely
Scape curve (400), described curve (400) is determined for the row C of panoramic picture (200) produced
On hope point P and by adding up to the some P watched from the focus of radiation source to be projected to
Those row of single frame (300) produce the parts of row C of panoramic picture (200),
This projection P-> P ' limits the projecting direction of the some P about specific single frame (300).
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| PCT/FI2014/000041 WO2015092119A1 (en) | 2013-12-18 | 2014-12-18 | Generating dental panoramic images |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111833244A (en) * | 2019-04-11 | 2020-10-27 | 深圳市深图医学影像设备有限公司 | Dental panoramic image generation method and device and computer readable storage medium |
| CN111833244B (en) * | 2019-04-11 | 2024-06-11 | 深圳市深图医学影像设备有限公司 | Dental panoramic image generation method and device and computer readable storage medium |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101740852B1 (en) | 2016-02-04 | 2017-06-09 | (주)제노레이 | X-ray imaging machine, method for generating panorama image using the same and method for generating panorama image |
| WO2017135532A1 (en) | 2016-02-04 | 2017-08-10 | (주)제노레이 | X-ray imaging device and panoramic image creation method using x-ray imaging device |
| KR101740850B1 (en) | 2016-02-04 | 2017-06-09 | (주)제노레이 | X-ray imaging machine, method for generating panorama image using the same |
| KR101740851B1 (en) | 2016-02-04 | 2017-06-09 | (주)제노레이 | X-ray imaging machine, method for generating panorama image using the same |
| KR101880150B1 (en) * | 2016-09-06 | 2018-07-19 | 오스템임플란트 주식회사 | Method and apparatus for generating panoramic image, panoramic x-ray imaging apparatus, computer-readable recording medium and computer program |
| CN107566757A (en) * | 2017-08-25 | 2018-01-09 | 包谦 | A kind of preparation method of panoramic video |
| CN109377534B (en) * | 2018-10-22 | 2022-04-26 | 南方医科大学 | Nonlinear oral cavity CT panoramic image synthesis method capable of automatically sampling thickness detection |
| FI3730057T3 (en) | 2019-04-26 | 2023-03-28 | Sirona Dental Systems Gmbh | Method and apparatus for generating a panoramic layer image |
| KR102292080B1 (en) | 2019-11-07 | 2021-08-20 | 부산대학교 산학협력단 | Individualized Dental Panorama System using Arch Shape and Method for Controlling the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6049584A (en) * | 1997-08-01 | 2000-04-11 | Sirona Dental Systems Gmbh & Co. Kg | X-ray diagnostic apparatus for producing panorama slice exposure of body parts of a patient |
| EP1961383A1 (en) * | 2005-10-21 | 2008-08-27 | Axion Japan Co. Ltd. | Panoramic image capturing device and image processing method for panoramic image capturing |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU20828U1 (en) * | 2001-08-06 | 2001-12-10 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В.И. Ульянова (Ленина)" | DENTAL UNIT |
| DE10313110A1 (en) * | 2003-03-24 | 2004-10-21 | Sirona Dental Systems Gmbh | X-ray device and X-ray sensitive camera |
| US7336763B2 (en) * | 2005-05-02 | 2008-02-26 | Oy Ajat Ltd | Dental extra-oral x-ray imaging system and method |
| US7676022B2 (en) * | 2005-05-02 | 2010-03-09 | Oy Ajat Ltd. | Extra-oral digital panoramic dental x-ray imaging system |
| JP4844886B2 (en) * | 2005-10-21 | 2011-12-28 | 株式会社 アクシオン・ジャパン | Panoramic image photographing apparatus and panoramic image photographing method |
| WO2007063980A1 (en) * | 2005-12-03 | 2007-06-07 | Atsushi Takahashi | Intraoral panoramic image pickup device and intraoral panoramic image pickup system |
| JP4823780B2 (en) * | 2006-06-19 | 2011-11-24 | 株式会社日立メディコ | Panoramic tomographic image generation apparatus and panoramic tomographic image generation program |
| FI125008B (en) * | 2007-03-19 | 2015-04-30 | Planmeca Oy | A panoramic X-ray machine and setting a reflective layer for panoramic imaging |
| WO2011013771A1 (en) * | 2009-07-30 | 2011-02-03 | 株式会社テレシステムズ | Radiation image pickup device and image pickup method by radiation |
| JP5696305B2 (en) * | 2009-08-05 | 2015-04-08 | 株式会社テレシステムズ | Radiation imaging apparatus and imaging method using radiation |
| JP5528052B2 (en) * | 2009-10-17 | 2014-06-25 | 株式会社テレシステムズ | Radiation imaging apparatus and phantom device used in the same |
| EP2531109B1 (en) * | 2010-02-02 | 2021-01-13 | Planmeca OY | Dental imaging apparatus |
| US9408579B2 (en) * | 2010-05-11 | 2016-08-09 | Takara Telesystems Corp. | Radiation imaging apparatus and phantom used for the same |
| CN103096804B (en) * | 2010-07-13 | 2017-03-15 | 达卡拉通信系统株式会社 | X-ray tomography is as photographic attachment |
| US8634515B2 (en) * | 2011-04-25 | 2014-01-21 | Vatech Co., Ltd. | Method and apparatus for obtaining panoramic image |
-
2013
- 2013-12-18 FI FI20130379A patent/FI125761B/en not_active IP Right Cessation
-
2014
- 2014-12-18 WO PCT/FI2014/000041 patent/WO2015092119A1/en active Application Filing
- 2014-12-18 EP EP14871134.4A patent/EP3082609A4/en not_active Withdrawn
- 2014-12-18 KR KR1020167018891A patent/KR20160098408A/en not_active Application Discontinuation
- 2014-12-18 JP JP2016540978A patent/JP6595480B2/en not_active Expired - Fee Related
- 2014-12-18 CN CN201480074309.3A patent/CN105934201B/en not_active Expired - Fee Related
- 2014-12-18 CN CN201910704924.2A patent/CN110353717A/en active Pending
- 2014-12-18 RU RU2016125711A patent/RU2677830C1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6049584A (en) * | 1997-08-01 | 2000-04-11 | Sirona Dental Systems Gmbh & Co. Kg | X-ray diagnostic apparatus for producing panorama slice exposure of body parts of a patient |
| EP1961383A1 (en) * | 2005-10-21 | 2008-08-27 | Axion Japan Co. Ltd. | Panoramic image capturing device and image processing method for panoramic image capturing |
Non-Patent Citations (2)
| Title |
|---|
| AKITOSHI KATSUMATA， ET AL.: "Initial evaluation of linear and spatially oriented planar images from a new dental panoramic system based on tomosynthesis", 《ORAL SURG ORAL MED ORAL PATHOL ORAL RADIOL ENDOD》 * |
| K OGAWA, ET AL.: "Development of a new dental panoramic radiographic system based on a tomosynthesis method", 《DENTOMAXILLOFACIAL RADIOLOGY》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111833244A (en) * | 2019-04-11 | 2020-10-27 | 深圳市深图医学影像设备有限公司 | Dental panoramic image generation method and device and computer readable storage medium |
| CN111833244B (en) * | 2019-04-11 | 2024-06-11 | 深圳市深图医学影像设备有限公司 | Dental panoramic image generation method and device and computer readable storage medium |
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| EP3082609A1 (en) | 2016-10-26 |
| WO2015092119A1 (en) | 2015-06-25 |
| RU2677830C1 (en) | 2019-01-21 |
| CN105934201B (en) | 2019-08-27 |
| EP3082609A4 (en) | 2018-05-09 |
| CN110353717A (en) | 2019-10-22 |
| JP2016540600A (en) | 2016-12-28 |
| FI125761B (en) | 2016-02-15 |
| KR20160098408A (en) | 2016-08-18 |
| FI20130379A (en) | 2015-06-19 |
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