CN105913424A - Tooth-based age estimation method and device - Google Patents
Tooth-based age estimation method and device Download PDFInfo
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- CN105913424A CN105913424A CN201610218021.XA CN201610218021A CN105913424A CN 105913424 A CN105913424 A CN 105913424A CN 201610218021 A CN201610218021 A CN 201610218021A CN 105913424 A CN105913424 A CN 105913424A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0012—Biomedical image inspection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10072—Tomographic images
- G06T2207/10081—Computed x-ray tomography [CT]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30004—Biomedical image processing
- G06T2207/30036—Dental; Teeth
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/155—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands use of biometric patterns for forensic purposes
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Abstract
The invention provides a tooth-based age estimation method and device. The method comprises the following steps: tooth image data of a target object is obtained, image segmentation processing technologies are applied, image data of an optimal tooth position combination corresponding to the gender of the target object is segmented form the tooth image data, pulp cavity or pulp chamber volume values of teeth at all tooth positions in the optimal tooth position combination are calculated, the pulp cavity or pulp chamber volume values of the teeth at all the tooth positions are input into an age model corresponding to the gender of the target object, age data of the target object is obtained, and the age model is built in advance according to pulp cavity or pulp chamber volume values of teeth at a plurality of tooth positions of sample objects. Via use of the tooth-based age estimation method and device, limitation of human living body or corpse age estimation methods can be reduced.
Description
Technical field
The present invention relates to medical verification technical field, infer year in particular to one based on tooth
The method and apparatus in age.
Background technology
The Age Estimation of people's live body or corpse judge in the measurement of penalty of suspect and prudence
Identity identification has a very important role.For baby, child and teen-age Age Estimation,
Can complete according to the developmental character sign of the skeleton during human development or tooth；And for adult man-year
The deduction in age, then lack the method being suitable to practicality.
The method carrying out Age Estimation by tooth currently for adult includes carbon 14 analytic process, Radix Asparagi
Propylhomoserin raceme method, cementum ring count method etc..These methods need to extract tooth, test
Room is analyzed, and limitation is bigger, it is impossible to for the Age Estimation of people's live body.
For the above-mentioned problem bigger to the Age Estimation method limitation of people's live body or corpse, the most still
Effective solution is not proposed.
Summary of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of side inferring the age based on tooth
Method and device, to reduce the limitation of the Age Estimation method to people's live body or corpse, convenient height
Effect.
First aspect, embodiments provides a kind of method inferring the age based on tooth, the party
Method includes: obtain the dental imaging data of destination object；Application image dividing processing technology, from tooth
View data is partitioned into the view data of the optimum tooth bit combination corresponding with the sex of destination object；Meter
Calculate pulp cavity or the pulp chamber bulking value of the tooth of each tooth position in the view data of optimum tooth bit combination；Will be each
The pulp cavity of the tooth of individual tooth position or the input of pulp chamber bulking value are to age models corresponding to the sex of destination object
In, it is thus achieved that the age data of destination object；Wherein, age models is many previously according to sample object
Pulp cavity or the pulp chamber bulking value of the tooth of individual tooth position are built-up.
In conjunction with first aspect, embodiments provide the first possible embodiment party of first aspect
Formula, wherein, is partitioned into the optimum tooth hyte corresponding with the sex of destination object from dental imaging data
The view data closed includes: when the sex of destination object is male, and corresponding optimum tooth bit combination is:
U1+U2+U3+U6+L4+L7；When the sex of destination object is women, corresponding optimum tooth bit combination is:
U1+U3+U7+L7；When sex the unknown of destination object, corresponding optimum tooth bit combination is:
U1+U2+U3+U5+U6+U7+L7；Wherein, U1 represents maxillary central incisors, and U2 represents upper eyelid laxity,
U3 represents eye tooth, and U5 represents the upper jaw the second premolars, and U6 represents maxillary first molar, U7 generation
Table maxillary second molar, L4 represents mandibular first premolar, and L7 represents mandibular second molar.
In conjunction with first aspect, embodiments provide the embodiment party that the second of first aspect is possible
Formula, wherein, inputs the sex to destination object by pulp cavity or the pulp chamber bulking value of the tooth of each tooth position
In corresponding age models, it is thus achieved that the age data of destination object includes:
When the sex of destination object is male, corresponding age models is:
Y=-19.617Lg10 (VU1)-14.514Lg10 (VU2)+37.349Lg10 (VU3)
-27.002Lg10(VL4)-18.071Lg10(VU6)-21.599Lg10(VL7)+110.318；
When the sex of destination object is women, corresponding age models is:
Y=-12.419Lg10 (VU1)+26.884Lg10 (VU3)-37.156Lg10 (VU7)
-26.511Lg10(VL7)+97.403；
When the sex of destination object is unknown, corresponding age models is:
Y=-20.464Lg10 (VU1)-9.069Lg10 (VU2)+41.347Lg10 (VU3)
-12.905Lg10(VU5)-13.566Lg10(VU6)-17.807Lg10(VU7)
-20.254Lg10(VL7)+99；
Wherein, Y represents the age, and Lg10 represents common logarithm conversion, and VU1 represents described U1 pulp cavity
Bulking value, VU2 represents the bulking value of described U2 pulp cavity, and VU3 represents the bulking value of described U3 pulp cavity,
VU5 represents the bulking value of described U5 pulp cavity, and VU6 represents the bulking value of described U6 pulp chamber, and VU7 represents
The bulking value of described U7 pulp chamber, VL4 represents the bulking value of described L4 pulp cavity, and VL7 represents described L7
The bulking value of pulp chamber.
In conjunction with the above-mentioned possible embodiment of first aspect, embodiments provide first aspect
The third possible embodiment, wherein, age models is the multiple teeth previously according to sample object
The pulp cavity of the tooth of position or pulp chamber bulking value is built-up includes: by the sample object specifying number
Multiple tooth positions on the view data of tooth carry out image procossing, be partitioned into the marrow of sample object tooth
Chamber or pulp chamber；Tooth on multiple tooth positions includes: single maxillary central incisors, upper eyelid laxity, on
Jaw canine tooth, the upper jaw the second premolars, infradentale, lower jaw lateral incisor, lower jaw canine tooth, lower jaw
One premolars, second mandibular premolars, and the maxillary first molar of many, maxillary second molar, under
Jaw first molar and mandibular second molar；Calculate sample object multiple tooth positions on tooth pulp cavity or
Pulp chamber bulking value；Pulp cavity according to the tooth on multiple tooth positions of sample object or pulp chamber bulking value, sample
The actual age of this object and sex, use multiple linear regression analysis to determine the optimum tooth of sample object
Bit combination and age models.
In conjunction with the third possible embodiment of first aspect, embodiments provide first party
The 4th kind of possible embodiment in face, wherein, according to the tooth on multiple tooth positions of sample object
Pulp cavity or pulp chamber bulking value, the actual age of sample object and sex, use multiple linear regression analysis
Determine that optimum tooth bit combination and the age models of sample object include: extract the sample under same sex parameter
The pulp cavity of this tooth or pulp chamber volume data；By pulp cavity or the marrow of the sample tooth under same sex parameter
It is independent variable that building volume data carry out the setting value after logarithmic transformation；By reality corresponding for sample tooth
Age is set as dependent variable；By multiple linear regression analysis, it is calculated the optimum tooth of sample object
Bit combination and age models.
Second aspect, embodiments provides a kind of device inferring the age based on tooth, this dress
Put and include: dental imaging data acquisition module, for obtaining the dental imaging data of destination object；Figure
As dividing processing module, for application image dividing processing technology, it is partitioned into from dental imaging data
The view data of the optimum tooth bit combination corresponding with the sex of destination object；Bulking value computing module, uses
The pulp cavity of the tooth of each tooth position or pulp chamber bulking value in the view data calculating optimum tooth bit combination；
Age data acquisition module, for inputting the pulp cavity of the tooth of each tooth position or pulp chamber bulking value to mesh
In the age models corresponding to sex of mark object, it is thus achieved that the age data of destination object；Wherein, the age
Model be the pulp cavity of the tooth of the multiple tooth positions previously according to sample object or pulp chamber bulking value built-up.
In conjunction with second aspect, embodiments provide the first possible embodiment party of second aspect
Formula, wherein, above-mentioned image dividing processing module includes: male's optimum tooth bit combination determines unit, uses
In when the sex of destination object is male, determine the optimum tooth bit combination that destination object is corresponding:
U1+U2+U3+U6+L4+L7；Women optimum tooth bit combination determines unit, for when the sex of destination object
During for women, determine the optimum tooth bit combination that destination object is corresponding: U1+U3+U7+L7；Unknown sex is
Excellent tooth bit combination determines unit, for when sex the unknown of destination object, determines that destination object is corresponding
Optimum tooth bit combination: U1+U2+U3+U5+U6+U7+L7；Wherein, U1 represents maxillary central incisors, U2
Representing upper eyelid laxity, U3 represents eye tooth, and U5 represents the upper jaw the second premolars, and U6 represents the upper jaw
First molar, U7 represents maxillary second molar, and L4 represents mandibular first premolar, and L7 represents lower jaw
Two grind one's teeth in sleep.
In conjunction with second aspect, embodiments provide the embodiment party that the second of second aspect is possible
Formula, wherein, age data acquisition module includes: men age data capture unit, for working as target
When the sex of object is male, men age model is used to obtain age data, wherein, men age
Model is:
Y=-19.617Lg10 (VU1)-14.514Lg10 (VU2)+37.349Lg10 (VU3)
-27.002Lg10(VL4)-18.071Lg10(VU6)-21.599Lg10(VL7)+110.318；
Female age data capture unit, for when the sex of destination object is women, uses women
Age models obtains age data, and wherein, female age model is:
Y=-12.419Lg10 (VU1)+26.884Lg10 (VU3)-37.156Lg10 (VU7)
-26.511Lg10(VL7)+97.403；
Unknown Sex, Age data capture unit, for when the sex of destination object is unknown, using
Unknown Sex, Age model obtains age data, and wherein, unknown Sex, Age model is:
Y=-20.464Lg10 (VU1)-9.069Lg10 (VU2)+41.347Lg10 (VU3)
-12.905Lg10(VU5)-13.566Lg10(VU6)-17.807Lg10(VU7)
-20.254Lg10(VL7)+99；
Wherein, Y represents the age, and Lg10 represents common logarithm conversion, and VU1 represents described U1 pulp cavity
Bulking value, VU2 represents the bulking value of described U2 pulp cavity, and VU3 represents the bulking value of described U3 pulp cavity,
VU5 represents the bulking value of described U5 pulp cavity, and VU6 represents the bulking value of described U6 pulp chamber, and VU7 represents
The bulking value of described U7 pulp chamber, VL4 represents the bulking value of described L4 pulp cavity, and VL7 represents described L7
The bulking value of pulp chamber.
In conjunction with the above-mentioned possible embodiment of second aspect, embodiments provide second aspect
The third possible embodiment, wherein, said apparatus also includes: sample image processing module,
For by the view data of the tooth on multiple tooth positions of the sample object of appointment number is carried out image
Process, be partitioned into pulp cavity or the pulp chamber of sample object tooth；Tooth on multiple tooth positions includes: single
Maxillary central incisors, upper eyelid laxity, eye tooth, the upper jaw the second premolars, infradentale,
Lower jaw lateral incisor, lower jaw canine tooth, mandibular first premolar, second mandibular premolars, and many upper
Jaw first molar, maxillary second molar, mandibular first molar and mandibular second molar；Sample tooth meter
Calculate module, for calculating pulp cavity or the pulp chamber bulking value of the tooth on multiple tooth positions of sample object；Mould
Type builds module, for according to the pulp cavity of the tooth on multiple tooth positions of sample object or pulp chamber bulking value,
The actual age of sample object and sex, use multiple linear regression analysis to determine the optimum of sample object
Tooth bit combination and age models.
In conjunction with the third possible embodiment of second aspect, embodiments provide second party
The 4th kind of possible embodiment in face, wherein, above-mentioned model construction module includes: data are extracted single
Unit, extracts pulp cavity or the pulp chamber volume data of sample tooth under same sex parameter；Independent variable sets
Unit, for carrying out logarithm by pulp cavity or the pulp chamber volume data of the sample tooth under same sex parameter
Setting value after conversion is independent variable；Dependent variable setup unit, for by reality corresponding for sample tooth
The border age is set as dependent variable；Model construction unit, for by multiple linear regression analysis, calculates
Obtain optimum tooth bit combination and the age models of sample object.
A kind of method and apparatus inferring the age based on tooth that the embodiment of the present invention provides, by obtaining
Above-mentioned data are carried out image dividing processing, calculate bulking value etc. by the dental imaging data of destination object
Process, obtain the optimum tooth bit combination of destination object, based on optimum tooth bit combination and corresponding age mould
Type obtains the deduction age of destination object, and this mode can obtain accurate age value, and
Decrease the correlation technique limitation to the Age Estimation method of people's live body or corpse, convenient efficiently.
For making the above-mentioned purpose of the present invention, feature and advantage to become apparent, preferable reality cited below particularly
Execute example, and coordinate appended accompanying drawing, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to required in embodiment
Accompanying drawing to be used is briefly described, it will be appreciated that the following drawings illustrate only some of the present invention
Embodiment, is therefore not construed as the restriction to scope, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other relevant accompanying drawings according to these accompanying drawings.
Fig. 1 shows a kind of method stream inferring the age based on tooth that the embodiment of the present invention 1 is provided
Cheng Tu；
Fig. 2 shows a kind of device knot inferring the age based on tooth that the embodiment of the present invention 2 is provided
Structure schematic diagram；
Fig. 3 shows a kind of based on the tooth deduction age the method that the embodiment of the present invention 3 is provided
Particular flow sheet.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this
Accompanying drawing in inventive embodiments, is clearly and completely described the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is only a part of embodiment of the present invention rather than whole embodiments.
Generally herein described in accompanying drawing and the assembly of the embodiment of the present invention that illustrates can be with various different joining
Put and arrange and design.Therefore, retouching in detail the embodiments of the invention provided in the accompanying drawings below
State the scope being not intended to limit claimed invention, but be merely representative of the selected reality of the present invention
Execute example.Based on embodiments of the invention, those skilled in the art are not before making creative work
Put the every other embodiment obtained, broadly fall into the scope of protection of the invention.
Carry out the method for Age Estimation by tooth need to extract tooth in view of existing, carry out reality
Testing room to analyze, limitation is bigger, it is impossible to for the problem of the Age Estimation of people's live body, the present invention implements
Example provides a kind of method and apparatus inferring the age based on tooth, and this technology can use relevant soft
Part and equipment realize, and are described below by embodiment.
Embodiment 1
A kind of method flow diagram inferring the age based on tooth shown in Figure 1, the method include with
Lower step:
Step S102, obtains the dental imaging data of destination object；
Step S104, application image dividing processing technology, it is partitioned into and target from dental imaging data
The view data of the optimum tooth bit combination that the sex of object is corresponding；
Step S106, calculate the tooth of each tooth position in the view data of optimum tooth bit combination pulp cavity or
Pulp chamber bulking value；
Step S108, inputs pulp cavity or the pulp chamber bulking value of the tooth of each tooth position to destination object
In the age models that sex is corresponding, it is thus achieved that the age data of destination object；Wherein, age models is pre-
Pulp cavity or the pulp chamber bulking value of the tooth of first multiple tooth positions according to sample object are built-up.
Unless specifically stated otherwise, the parts illustrated the most in these embodiments and the relative step of step
Suddenly, numerical expression and numerical value do not limit the scope of the invention.
In the said method of the present embodiment, divide by the dental imaging data of destination object are carried out image
Cut process, calculate bulking value and bulking value input is processed to age models etc., obtain destination object
Age data；Said method is not only suitable for corpse and is also applied for the Age Estimation of live body, decreases year
Age inference technologies limitation.
The Age Estimation of people's live body or corpse is an important content in prudence.The accurate age pushes away
Breaking, it is highly important to have in judge is to the identity identification in the measurement of penalty of suspect and prudence
Effect.The identity identification of the unidentified corpse that such as Large Scale Natural Disasters is caused, ancient times or
The identity identification of modern unidentified remains, do not have the age of the cross-border refugee of proof of identification assert with
And assert for whether arriving the age of the people that the legal crime age exists query.
There is a series of age_related changes in tooth, and has easily preservation, to physical chemistry and time
Because have the characteristics such as the strongest resistance；Increase rheological properties feature be little affected by individual nutrition, drug administration,
The plurality of advantages such as the impact of local environment and weather so that carry out Age Estimation one-tenth by tooth
For possible.
There is certain diversity in the feature in view of different sexes tooth, the embodiment of the present invention is specifically
When realizing, when first determining whether the sex of existing object, then it is partitioned into and mesh from dental imaging data
The view data of the optimum tooth bit combination corresponding to sex of mark object；When the sex of destination object is male
Time, corresponding optimum tooth bit combination is: U1+U2+U3+U6+L4+L7；When the sex of destination object is female
Property time, corresponding optimum tooth bit combination is: U1+U3+U7+L7；When sex the unknown of destination object,
Corresponding optimum tooth bit combination is: U1+U2+U3+U5+U6+U7+L7；Wherein, cut during U1 represents the upper jaw
Tooth, U2 represents upper eyelid laxity, and U3 represents eye tooth, and U5 represents the upper jaw the second premolars, U6
Representing maxillary first molar, U7 represents maxillary second molar, and L4 represents mandibular first premolar, L7 generation
Table mandibular second molar.
The above-mentioned mode determining optimum tooth bit combination, can improve while reducing data processing amount
Accuracy to destination object Age Estimation.
Further, in order to infer the age of destination object more accurately, the embodiment of the present invention is realizing
Time, by corresponding to the sex of destination object to pulp cavity or the input of pulp chamber bulking value of the tooth of each tooth position
In age models, it is thus achieved that the age data of destination object；Specifically, when the sex of destination object be man
Property time, corresponding age models is: Y=-19.617Lg10 (VU1)-14.514Lg10 (VU2)
+37.349Lg10(VU3)-27.002Lg10(VL4)-18.071Lg10(VU6)
-21.599Lg10(VL7)+110.318；
When the sex of destination object is women, corresponding age models is: Y=-12.419Lg10 (VU1)
+26.884Lg10(VU3)-37.156Lg10(VU7)-26.511Lg10(VL7)+97.403；
When the sex of destination object is unknown, corresponding age models is: Y=-20.464Lg10 (VU1)
-9.069Lg10(VU2)+41.347Lg10(VU3)-12.905Lg10(VU5)
-13.566Lg10(VU6)-17.807Lg10(VU7)-20.254Lg10(VL7)+99；
Wherein, Y represents the age, and Lg10 represents common logarithm conversion, and VU1 represents described U1 pulp cavity
Bulking value, VU2 represents the bulking value of described U2 pulp cavity, and VU3 represents the bulking value of described U3 pulp cavity,
VU5 represents the bulking value of described U5 pulp cavity, and VU6 represents the bulking value of described U6 pulp chamber, and VU7 represents
The bulking value of described U7 pulp chamber, VL4 represents the bulking value of described L4 pulp cavity, and VL7 represents described L7
The bulking value of pulp chamber.
By the pulp cavity of the tooth of each tooth position or pulp chamber bulking value are inputted the sex pair to destination object
In the age models answered, obtain the deduction age of destination object；Said method reduces in prior art
Carbon 14 analytic process, aspartic acid raceme method, the limitation that cementum ring count method etc. exists, it is not necessary to
The tooth of destination object is extracted and is analyzed, it is only necessary to the view data of destination object tooth is provided,
Easy to operate, and there is certain accuracy.
When implementing, above-mentioned age models is the tooth of the multiple tooth positions previously according to sample object
Pulp cavity or pulp chamber bulking value built-up, first, by sample object multiple specifying number
The view data of the tooth on tooth position carries out image procossing, is partitioned into pulp cavity or the marrow of sample object tooth
Room；Tooth on multiple tooth positions includes: single maxillary central incisors, upper eyelid laxity, eye tooth,
The upper jaw the second premolars, infradentale, lower jaw lateral incisor, lower jaw canine tooth, mandibular first premolar,
Second mandibular premolars, and the maxillary first molar of many, maxillary second molar, mandibular first molar
And mandibular second molar；Next, the pulp cavity of the tooth on multiple tooth positions of calculating sample object or pulp chamber
Bulking value；Finally, according to the pulp cavity of the tooth on multiple tooth positions of sample object or pulp chamber bulking value,
The actual age of sample object and sex, use multiple linear regression analysis to determine the optimum of sample object
Tooth bit combination and age models.
Said method, by processing the data of sample object, builds age models, can obtain
The pulp cavity of the tooth on multiple tooth positions or pulp chamber bulking value and the relation between the age of sample object, enter
And can utilize above-mentioned age models that the age of destination object is inferred.
Further, the embodiment of the present invention is using multiple linear regression analysis to determine sample object
When optimum tooth bit combination and age models, extract pulp cavity or the marrow of sample tooth under same sex parameter
Building volume data；It is right the pulp cavity of the sample tooth under same sex parameter or pulp chamber volume data to be carried out
Setting value after transformation of variables is independent variable；Actual age corresponding for sample tooth is set as dependent variable；
By multiple linear regression analysis, it is calculated optimum tooth bit combination and the age models of sample object.
By the way of above-mentioned multiple linear regression analysis, available optimum tooth bit combination and age models,
And then realize the Age Estimation to destination object.
Embodiment 2
A kind of apparatus structure schematic diagram inferring the age based on tooth shown in Figure 2, this device bag
Include with lower module:
Dental imaging data acquisition module 22, for obtaining the dental imaging data of destination object；
Image dividing processing module 24, for application image dividing processing technology, from dental imaging data
In be partitioned into the view data of the optimum tooth bit combination corresponding with the sex of destination object；
Bulking value computing module 26, each tooth position in the view data calculating optimum tooth bit combination
The pulp cavity of tooth or pulp chamber bulking value；
Age data acquisition module 28, for by defeated to pulp cavity or the pulp chamber bulking value of the tooth of each tooth position
Enter to age models corresponding to the sex of destination object, it is thus achieved that the age data of destination object；Wherein,
Age models is pulp cavity or the pulp chamber bulking value structure of the tooth of the multiple tooth positions previously according to sample object
Form.
In the said apparatus of the present embodiment, by obtaining the dental imaging data of destination object, to above-mentioned
View data carries out dividing processing, and calculates pulp cavity or the pulp chamber of the tooth of each tooth position in view data
Bulking value, can obtain the optimum tooth bit combination corresponding with the sex of destination object and the tooth of each tooth position
The pulp cavity of tooth or pulp chamber bulking value；Pulp cavity or the pulp chamber bulking value of the tooth of each tooth position are inputted to mesh
In the age models corresponding to sex of mark object, it is thus achieved that the age data of destination object；Said apparatus was both
It is applicable to corpse and is also applied for the Age Estimation of live body, decrease the limitation of Age Estimation technology.
It should be noted that similar label and letter represent similar terms, therefore, one in following accompanying drawing
A certain Xiang Yi the accompanying drawing of denier is defined, then need not it is carried out further in accompanying drawing subsequently
Definition and explanation.
The device that the embodiment of the present invention is provided, it realizes principle and the technique effect of generation and aforementioned side
Method embodiment is identical, for briefly describing, and the not mentioned part of device embodiment part, refer to aforementioned side
Corresponding contents in method embodiment.
In order to obtain the optimum tooth bit combination at the age for inferring existing object, above-mentioned image divides
Cut processing module 24 to include:
Male's optimum tooth bit combination determines unit, for when the sex of destination object is male, determines
The optimum tooth bit combination that destination object is corresponding: U1+U2+U3+U6+L4+L7；
Women optimum tooth bit combination determines unit, for when the sex of destination object is women, determines
The optimum tooth bit combination that destination object is corresponding: U1+U3+U7+L7；
Unknown sex optimum tooth bit combination determines unit, is used for when sex the unknown of destination object, really
The optimum tooth bit combination that the object that sets the goal is corresponding: U1+U2+U3+U5+U6+U7+L7；
Wherein, U1 represents maxillary central incisors, and U2 represents upper eyelid laxity, and U3 represents eye tooth, U5
Representing the upper jaw the second premolars, U6 represents maxillary first molar, and U7 represents maxillary second molar, L4 generation
Table mandibular first premolar, L7 represents mandibular second molar.
By above-mentioned image dividing processing module 24, it may be determined that under existing object different sexes parameter
Excellent tooth bit combination；Above-mentioned optimum tooth hyte is combined into the follow-up age relatively accurately inferring existing object and carries
Supply preferable data combination foundation.
Further, in order to relatively accurately infer the age of existing object, above-mentioned age data obtains
Module 28 includes:
Men age data capture unit, for when the sex of destination object is male, uses male
Age models obtains age data, and wherein, men age model is:
Y=-19.617Lg10 (VU1)-14.514Lg10 (VU2)+37.349Lg10 (VU3)
-27.002Lg10(VL4)-18.071Lg10(VU6)-21.599Lg10(VL7)+110.318；
Female age data capture unit, for when the sex of destination object is women, uses women
Age models obtains age data, and wherein, female age model is:
Y=-12.419Lg10 (VU1)+26.884Lg10 (VU3)-37.156Lg10 (VU7)
-26.511Lg10(VL7)+97.403；
Unknown Sex, Age data capture unit, for when the sex of destination object is unknown, using
Unknown Sex, Age model obtains age data, and wherein, unknown Sex, Age model is:
Y=-20.464Lg10 (VU1)-9.069Lg10 (VU2)+41.347Lg10 (VU3)
-12.905Lg10(VU5)-13.566Lg10(VU6)-17.807Lg10(VU7)
-20.254Lg10(VL7)+99；
Wherein, Y represents the age, and Lg10 represents common logarithm conversion, and VU1 represents described U1 pulp cavity
Bulking value, VU2 represents the bulking value of described U2 pulp cavity, and VU3 represents the bulking value of described U3 pulp cavity,
VU5 represents the bulking value of described U5 pulp cavity, and VU6 represents the bulking value of described U6 pulp chamber, and VU7 represents
The bulking value of described U7 pulp chamber, VL4 represents the bulking value of described L4 pulp cavity, and VL7 represents described L7
The bulking value of pulp chamber.
By the process of above-mentioned age data acquisition module 28, can relatively accurately infer existing object
Age data, and applied range, be not limited to the existing state of existing object.
In order to obtain the age models under above-mentioned different sexes parameter, said apparatus also includes:
Sample image processing module, on the multiple tooth positions by the sample object to appointment number
The view data of tooth carries out image procossing, is partitioned into pulp cavity or the pulp chamber of sample object tooth；Multiple
Tooth on tooth position includes: single maxillary central incisors, upper eyelid laxity, eye tooth, the upper jaw
Two premolarss, infradentale, lower jaw lateral incisor, lower jaw canine tooth, mandibular first premolar, lower jaw
Second premolars, and the maxillary first molar of many, maxillary second molar, mandibular first molar and under
Jaw second molar；
Sample tooth computing module, for calculate tooth on multiple tooth positions of sample object pulp cavity or
Pulp chamber bulking value；
Model construction module, for the pulp cavity according to the tooth on multiple tooth positions of sample object or pulp chamber
Bulking value, the actual age of sample object and sex, use multiple linear regression analysis to determine sample pair
The optimum tooth bit combination of elephant and age models.
By above-mentioned sample image processing module, sample tooth computing module and model construction module
Process, the age models under different sexes parameter can be obtained, utilize this age models can be to currently
The age of object infers.
Above-mentioned model construction module, in being embodied as, also includes: data extracting unit, extracts same
The pulp cavity of the sample tooth under one sex parameter or pulp chamber volume data；Independent variable setup unit, is used for
The pulp cavity of the sample tooth under same sex parameter or pulp chamber volume data are carried out the number after logarithmic transformation
Value is set as independent variable；Dependent variable setup unit, for setting actual age corresponding for sample tooth
For dependent variable；Model construction unit, for by multiple linear regression analysis, is calculated sample pair
The optimum tooth bit combination of elephant and age models.
By the way of the multiple linear regression analysis of model construction module in said apparatus, can get
Excellent tooth bit combination and age models, and then realize the Age Estimation to destination object.
Embodiment 3
The method of the embodiment of the present invention is the method by iconography, the CBCT, this CBCT of shooting tooth
It it is a kind of dentistry special CT image；Then image is measured, be so not only suitable for corpse and be also suitable
In live body.
The theoretical basis of the embodiment of the present invention is second phase dentin deposition.Second phase dentin deposition is tooth
A kind of age_related changes of pulp cavity, this change is to exist throughout one's life；Along with the continuous growth at age,
Second phase, dentin was constantly deposited on pulp cavity wall, and the volume of corresponding pulp cavity constantly reduces；So
Age Estimation can be carried out by the relation of the volume of calculating pulp cavity with age.The embodiment of the present invention
Method be retrospective collection batch of data, by calculating tooth pulp cavity or the volume of pulp chamber and year
The relation in age obtains a formula, uses this formula to carry out Age Estimation later.
See a kind of method inferring the age based on tooth that Fig. 3 shows that the embodiment of the present invention is provided
Particular flow sheet, the method comprises the following steps:
Step S302, image acquisition；
The present embodiment is with 125 male shot by NewTom VG conical beam CT machine and 115 women
CBCT 3 d image data as a example by illustrate, by 125 male and the CBCT of 115 women
3 d image data is as sample, and wherein, each image comprises at least one simultaneously and meets inclusive criteria
Single maxillary central incisors, upper eyelid laxity, eye tooth, the upper jaw the second premolars, in lower jaw
Incisor, lower jaw lateral incisor, lower jaw canine tooth, mandibular first premolar, second mandibular premolars, and many
The maxillary first molar of root, maxillary second molar, mandibular first molar, mandibular second molar.Totally 13
The tooth of individual tooth position.Each tooth position tooth inclusive criteria is: bad without dental caries, without excessive wear, without prosthetic
Filling or treatment, without metal artifacts interference, pulp cavity without denticle and dispersivity calcification.
Step S304,13 tooth position pulp cavitys or the segmentation of pulp chamber and volume calculate, specific as follows:
The elementary cell of composition conical beam CT three-dimensional data is voxel；Above-mentioned voxel be isotropic just
Cube.After data are rebuild by 0.15 millimeter of voxel value, the volume of each voxel is 0.15 millimeter ×
0.15 millimeter × 0.15 millimeter.After data derive in dicom format, import to a software increased income
In ITK-SNAP 2.4, after using software I TK-SNAP 2.4 to be partitioned into tooth pulp cavity or pulp chamber, phase
When belonging to pulp cavity or pulp chamber in having demarcated which voxel.Calculate the number of voxel, and be multiplied by every individuality
The pulp cavity that just can calculate of bulking value of element or the volume of pulp chamber.
Concrete, the cutting procedure of multirooted teeth is: after CBCT image taking completes, by 0.15 millimeter of body
The DICOM data that element value was rebuild import in ITK-SNAP 2.4 software；Artificial setting segmentation
Threshold value, the position that position is pulp cavity of white, i.e. determine which voxel belongs to pulp cavity；Use in software
Small tool, add a bubble in part to be split, be equivalent to arrange a starting point, software
Automatically the voxel consistent with starting point threshold value is identified；Whole pulp cavity has been split；For multirooted teeth, for
Avoid the impact of the different and complicated root canal system of the number of root, flat with floor of pulp chamber plane for segmentation
Face, clips root of the tooth, a reservation pulp chamber part；Calculate its voxel number and be multiplied by the body of each voxel
Long-pending, i.e. try to achieve the volume of pulp chamber.
Concrete, the cutting procedure basic step of multi-rooted tooth: after CBCT image taking completes, by 0.15
The DICOM data that millimeter voxel value was rebuild import in ITK-SNAP 2.4 software；Artificial setting
The threshold value of segmentation, the position that position is pulp cavity of white, i.e. determine which voxel belongs to pulp cavity；Use
Small tool in software, adds a bubble in part to be split, is equivalent to arrange a starting point,
Software identifies the voxel consistent with starting point threshold value automatically；Whole pulp cavity has been split；Due to multi-rooted tooth
Only one of which root of the tooth, and be that a continuous print is overall, it is not necessary to the volume of segmentation pulp chamber；Calculate voxel
Value, draws volume.
By above-mentioned steps, calculate 13 tooth position teeth of 240 patient every patients pulp cavity or
Person's pulp chamber volumetric quantities.
Step S306, multiple linear regression analysis calculates age formula corresponding to optimum tooth bit combination (i.e.
Above-mentioned age models)；
13 tooth position tooth pulp cavitys or pulp chamber bulking value are carried out the numerical value after logarithmic transformation as from becoming
Amount, the data obtained uses SPSS19.0 to carry out multiple linear regression as dependent variable to divide by the corresponding age
Analysis, calculates optimum tooth bit combination and math equation is as follows:
For male, the optimum tooth hyte of Age Estimation is combined into: U1+U2+U3+U6+L4+L7；
Age Estimation formula is:
Y=-19.617Lg10 (VU1)-14.514Lg10 (VU2)+37.349Lg10 (VU3)
-27.002Lg10(VL4)-18.071Lg10(VU6)-21.599Lg10(VL7)+110.318；
For women, the optimum tooth hyte of Age Estimation is combined into: U1+U3+U7+L7
Age Estimation formula is:
Y=-12.419Lg10 (VU1)+26.884Lg10 (VU3)-37.156Lg10 (VU7)
-26.511Lg10(VL7)+97.403；
For unknown sex, the optimum tooth position of Age Estimation is: U1+U2+U3+U5+U6+U7+L7
Age Estimation formula is:
Y=-20.464Lg10 (VU1)-9.069Lg10 (VU2)+41.347Lg10 (VU3)
-12.905Lg10(VU5)-13.566Lg10(VU6)-17.807Lg10(VU7)
-20.254Lg10(VL7)+99；
Wherein, U1 represents maxillary central incisors, and U2 represents upper eyelid laxity, and U3 represents eye tooth, U5
Representing the upper jaw the second premolars, U6 represents maxillary first molar, and U7 represents maxillary second molar, L4 generation
Table mandibular first premolar, L7 represents mandibular second molar；Wherein, Y represents the age, and Lg10 represents
Common logarithm converts, and VU1 represents the bulking value of described U1 pulp cavity, and VU2 represents the body of described U2 pulp cavity
Product value, VU3 represents the bulking value of described U3 pulp cavity, and VU5 represents the bulking value of described U5 pulp cavity, VU6
Representing the bulking value of described U6 pulp chamber, VU7 represents the bulking value of described U7 pulp chamber, and VL4 represents described
The bulking value of L4 pulp cavity, VL7 represents the bulking value of described L7 pulp chamber.
With the standard error (standard errors of the estimate, SEE) of predictive value it is
Index, the accuracy of evaluation model prediction.Then for male, women and unknown sex population, SEE divides
Not being 7.100 years old, 6.258 years old, 6.970 years old, this result disclosure satisfy that practical application request.
Step S308, applies above-mentioned age formula to calculate the age of current target object；Specifically calculated
Journey is as follows:
(1) the dental imaging data of destination object are obtained；As: carry out Age Estimation needed for collection individual
The CBCT image of (i.e. destination object)；
(2) application image dividing processing technology, is partitioned into and target pair from above-mentioned dental imaging data
The view data of the optimum tooth bit combination that the sex of elephant is corresponding；
(3) pulp cavity or the marrow of the tooth of each tooth position in the view data of above-mentioned optimum tooth bit combination are calculated
Chamber body product value；
Split according to sex and calculate pulp cavity or the pulp chamber volume of its image tooth position tooth；Such as women,
Then its CBCT image maxillary central incisors of separation calculation, eye tooth, maxillary second molar, lower jaw second
Grind one's teeth in sleep the pulp cavity of four tooth position teeth or pulp chamber bulking value；
(4) by pulp cavity or the property of pulp chamber bulking value input extremely above-mentioned destination object of the tooth of each tooth position
In not corresponding age models (the most above-mentioned age formula), it is thus achieved that the age data of above-mentioned destination object.
Such as women, then bring formula Y=-12.419Lg10 (VU1)+26.884Lg10 (VU3) into
-37.156Lg10(VU7)-26.511Lg10(VL7)+97.403；Obtain the last deduction age.
Said method is applicable to the Age Estimation under different situations, and is not only restricted to corpse or live body, and
Can be used for the Age Estimation of adult.Combine with other Age Estimation methods under specific circumstances, can
Obtain more preferable effect.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit
In, it is also possible to it is that unit is individually physically present, it is also possible to two or more unit are integrated in
In one unit.
Last it is noted that the detailed description of the invention of embodiment described above, the only present invention, use
So that technical scheme to be described, being not intended to limit, protection scope of the present invention is not limited to
This, is although the present invention being described in detail with reference to previous embodiment, the ordinary skill of this area
Personnel are it is understood that any those familiar with the art is at the technical scope that the invention discloses
In, the technical scheme described in previous embodiment still can be modified by it maybe can readily occur in change
Change, or wherein portion of techniques feature is carried out equivalent；And these are revised, change or replace,
The essence not making appropriate technical solution departs from the spirit and scope of embodiment of the present invention technical scheme.All
Should contain within protection scope of the present invention.Therefore, protection scope of the present invention should be described with right
The protection domain required is as the criterion.
Claims (10)
1. the method inferring the age based on tooth, it is characterised in that including:
Obtain the dental imaging data of destination object；
Application image dividing processing technology, is partitioned into and described target pair from described dental imaging data
The view data of the optimum tooth bit combination that the sex of elephant is corresponding；
Calculate pulp cavity or the pulp chamber body of the tooth of each tooth position in the view data of described optimum tooth bit combination
Product value；
By pulp cavity or the property of pulp chamber bulking value input extremely described destination object of the tooth of each tooth position described
In not corresponding age models, it is thus achieved that the age data of described destination object；Wherein, described age mould
Type be the pulp cavity of the tooth of the multiple tooth positions previously according to sample object or pulp chamber bulking value built-up.
Method the most according to claim 1, it is characterised in that from described dental imaging data
The view data being partitioned into the optimum tooth bit combination corresponding with the sex of described destination object includes:
When the sex of described destination object is male, corresponding optimum tooth bit combination is:
U1+U2+U3+U6+L4+L7；
When the sex of described destination object is women, corresponding optimum tooth bit combination is:
U1+U3+U7+L7；
When sex the unknown of described destination object, corresponding optimum tooth bit combination is:
U1+U2+U3+U5+U6+U7+L7；
Wherein, U1 represents maxillary central incisors, and U2 represents upper eyelid laxity, and U3 represents eye tooth, U5
Representing the upper jaw the second premolars, U6 represents maxillary first molar, and U7 represents maxillary second molar, L4 generation
Table mandibular first premolar, L7 represents mandibular second molar.
Method the most according to claim 1, it is characterised in that by the tooth of each tooth position described
Pulp cavity or the input of pulp chamber bulking value in age models corresponding to the sex of described destination object, it is thus achieved that
The age data of described destination object includes:
When the sex of described destination object is male, corresponding age models is:
Y=-19.617Lg10 (VU1)-14.514Lg10 (VU2)+37.349Lg10 (VU3)
-27.002Lg10(VL4)-18.071Lg10(VU6)-21.599Lg10(VL7)+110.318；
When the sex of described destination object is women, corresponding age models is:
Y=-12.419Lg10 (VU1)+26.884Lg10 (VU3)-37.156Lg10 (VU7)
-26.511Lg10(VL7)+97.403；
When the sex of described destination object is unknown, corresponding age models is:
Y=-20.464Lg10 (VU1)-9.069Lg10 (VU2)+41.347Lg10 (VU3)
-12.905Lg10(VU5)-13.566Lg10(VU6)-17.807Lg10(VU7)
-20.254Lg10(VL7)+99；
Wherein, Y represents the age, and Lg10 represents common logarithm conversion, and VU1 represents described U1 pulp cavity
Bulking value, VU2 represents the bulking value of described U2 pulp cavity, and VU3 represents the bulking value of described U3 pulp cavity,
VU5 represents the bulking value of described U5 pulp cavity, and VU6 represents the bulking value of described U6 pulp chamber, and VU7 represents
The bulking value of described U7 pulp chamber, VL4 represents the bulking value of described L4 pulp cavity, and VL7 represents described L7
The bulking value of pulp chamber.
4. according to the method according to any one of claim 1-3, it is characterised in that described age mould
Type is pulp cavity or the built-up bag of pulp chamber bulking value of the tooth of the multiple tooth positions previously according to sample object
Include:
By the view data of the tooth on multiple tooth positions of the sample object of appointment number is carried out image
Process, be partitioned into pulp cavity or the pulp chamber of described sample object tooth；Tooth bag on the plurality of tooth position
Include: single maxillary central incisors, upper eyelid laxity, eye tooth, the upper jaw the second premolars, lower jaw
Central incisor, lower jaw lateral incisor, lower jaw canine tooth, mandibular first premolar, second mandibular premolars, and
Maxillary first molar, maxillary second molar, mandibular first molar and the mandibular second molar of many；
Calculate pulp cavity or the pulp chamber bulking value of tooth on multiple tooth positions of described sample object；
Pulp cavity according to the tooth on multiple tooth positions of described sample object or pulp chamber bulking value, described sample
The actual age of this object and sex, described sample object is to use multiple linear regression analysis to determine
Excellent tooth bit combination and age models.
Method the most according to claim 4, it is characterised in that many according to described sample object
The pulp cavity of the tooth on individual tooth position or pulp chamber bulking value, the actual age of described sample object and sex,
Multiple linear regression analysis is used to determine that the optimum tooth bit combination of described sample object and age models include:
Extract pulp cavity or the pulp chamber volume data of described sample tooth under same sex parameter；
Pulp cavity or the pulp chamber volume data of the described sample tooth under same sex parameter are carried out logarithm change
Setting value after changing is independent variable；
Actual age corresponding for described sample tooth is set as dependent variable；
By multiple linear regression analysis, it is calculated optimum tooth bit combination and the year of described sample object
Rheology model.
6. the device inferring the age based on tooth, it is characterised in that including:
Dental imaging data acquisition module, for obtaining the dental imaging data of destination object；
Image dividing processing module, for application image dividing processing technology, from described dental imaging number
The view data of the optimum tooth bit combination corresponding with the sex of described destination object it is partitioned according to；
Bulking value computing module, each tooth position in the view data calculating described optimum tooth bit combination
The pulp cavity of tooth or pulp chamber bulking value；
Age data acquisition module, for by the pulp cavity of the tooth of each tooth position described or pulp chamber bulking value
Input is in age models corresponding to the sex of described destination object, it is thus achieved that the age of described destination object
Data；Wherein, described age models is the pulp cavity of tooth of the multiple tooth positions previously according to sample object
Or pulp chamber bulking value is built-up.
Device the most according to claim 6, it is characterised in that described image dividing processing module
Including:
Male's optimum tooth bit combination determines unit, is used for when the sex of described destination object is male,
Determine the optimum tooth bit combination that described destination object is corresponding: U1+U2+U3+U6+L4+L7；
Women optimum tooth bit combination determines unit, is used for when the sex of described destination object is women,
Determine the optimum tooth bit combination that described destination object is corresponding: U1+U3+U7+L7；
Unknown sex optimum tooth bit combination determines unit, is used for when sex the unknown of described destination object,
Determine the optimum tooth bit combination that described destination object is corresponding: U1+U2+U3+U5+U6+U7+L7；
Wherein, U1 represents maxillary central incisors, and U2 represents upper eyelid laxity, and U3 represents eye tooth, U5
Representing the upper jaw the second premolars, U6 represents maxillary first molar, and U7 represents maxillary second molar, L4 generation
Table mandibular first premolar, L7 represents mandibular second molar.
Device the most according to claim 6, it is characterised in that described age data acquisition module
Including:
Men age data capture unit, for when the sex of described destination object is male, uses
Men age model obtains age data, and wherein, described men age model is:
Y=-19.617Lg10 (VU1)-14.514Lg10 (VU2)+37.349Lg10 (VU3)
-27.002Lg10(VL4)-18.071Lg10(VU6)-21.599Lg10(VL7)+110.318；
Female age data capture unit, for when the sex of described destination object is women, uses
Female age model obtains age data, and wherein, described female age model is:
Y=-12.419Lg10 (VU1)+26.884Lg10 (VU3)-37.156Lg10 (VU7)
-26.511Lg10(VL7)+97.403；
Unknown Sex, Age data capture unit, is used for when the sex of described destination object is unknown,
Using unknown Sex, Age model to obtain age data, wherein, described unknown Sex, Age model is:
Y=-20.464Lg10 (VU1)-9.069Lg10 (VU2)+41.347Lg10 (VU3)
-12.905Lg10(VU5)-13.566Lg10(VU6)-17.807Lg10(VU7)
-20.254Lg10(VL7)+99；
Wherein, Y represents the age, and Lg10 represents common logarithm conversion, and VU1 represents described U1 pulp cavity
Bulking value, VU2 represents the bulking value of described U2 pulp cavity, and VU3 represents the bulking value of described U3 pulp cavity,
VU5 represents the bulking value of described U5 pulp cavity, and VU6 represents the bulking value of described U6 pulp chamber, and VU7 represents
The bulking value of described U7 pulp chamber, VL4 represents the bulking value of described L4 pulp cavity, and VL7 represents described L7
The bulking value of pulp chamber.
9. according to the device according to any one of claim 6-8, it is characterised in that described device is also
Including:
Sample image processing module, on the multiple tooth positions by the sample object to appointment number
The view data of tooth carries out image procossing, is partitioned into pulp cavity or the pulp chamber of described sample object tooth；
Tooth on the plurality of tooth position includes: single maxillary central incisors, upper eyelid laxity, eye tooth,
The upper jaw the second premolars, infradentale, lower jaw lateral incisor, lower jaw canine tooth, mandibular first premolar,
Second mandibular premolars, and the maxillary first molar of many, maxillary second molar, mandibular first molar
And mandibular second molar；
Sample tooth computing module, for calculating the marrow of the tooth on multiple tooth positions of described sample object
Chamber or pulp chamber bulking value；
Model construction module, for according to the pulp cavity of the tooth on multiple tooth positions of described sample object or
Pulp chamber bulking value, the actual age of described sample object and sex, use multiple linear regression analysis true
The optimum tooth bit combination of fixed described sample object and age models.
Device the most according to claim 9, it is characterised in that described model construction module bag
Include:
Data extracting unit, extracts pulp cavity or the pulp chamber body of described sample tooth under same sex parameter
Volume data；
Independent variable setup unit, for by the pulp cavity of the described sample tooth under same sex parameter or marrow
It is independent variable that building volume data carry out the setting value after logarithmic transformation；
Dependent variable setup unit, for being set as dependent variable by actual age corresponding for described sample tooth；
Model construction unit, for by multiple linear regression analysis, is calculated described sample object
Optimum tooth bit combination and age models.
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| TWI773534B (en) * | 2021-09-17 | 2022-08-01 | 長庚醫療財團法人高雄長庚紀念醫院 | Tooth age prediction method and tooth age prediction system |
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| CN110175973A (en) * | 2018-02-11 | 2019-08-27 | 上海市刑事科学技术研究院 | The measuring method of pigment and its application on medical jurisprudence in a kind of human cartilage |
| US11321828B2 (en) | 2019-04-09 | 2022-05-03 | Wayne Needham | Machine learning system animal age determination |
| CN112164075A (en) * | 2020-09-23 | 2021-01-01 | 广东工业大学 | Segmentation method for maxillary sinus membrane morphological change |
| CN112164075B (en) * | 2020-09-23 | 2023-08-01 | 广东工业大学 | Segmentation method for maxillary sinus membrane morphology change |
| TWI773534B (en) * | 2021-09-17 | 2022-08-01 | 長庚醫療財團法人高雄長庚紀念醫院 | Tooth age prediction method and tooth age prediction system |
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