CN103678848A - Setting method of skin soft tissue expander - Google Patents
Setting method of skin soft tissue expander Download PDFInfo
- Publication number
- CN103678848A CN103678848A CN201210356610.6A CN201210356610A CN103678848A CN 103678848 A CN103678848 A CN 103678848A CN 201210356610 A CN201210356610 A CN 201210356610A CN 103678848 A CN103678848 A CN 103678848A
- Authority
- CN
- China
- Prior art keywords
- expander
- area
- skin
- tissue expander
- target area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The invention discloses a setting method of a skin soft tissue expander. The method comprises the steps of establishing the three-dimensional module of a patient according to medical images, measuring the target area of the patient according to the three-dimensional model, then estimating actual skin expanding area according to the target area, estimating the expansion surface area of the expander by setting reversible elastic factors, and lastly selecting the expander and setting expanding parameters. The setting method of the skin soft tissue expander cannot cause insufficient or overmuch skin expansion, reduces pain of patients and avoids the risks generated when simply relying on the clinical experience of doctors.
Description
Technical field
The invention belongs to shaping cosmetic surgery field, relate in particular to a kind of skin tissue expander establishing method.
Background technology
Skin is the organ of human body maximum, and 16% of the about percentage of liveweight of weight has the several functions such as protection body, the extraneous infringement of opposing, excretion refuse, secretion, absorption, regulate body temperature.But in actual life and production and operating activities, many reasons can cause defect of skin, as: congenital abnormality, wound, tumour etc., the reparation of various types of baldnesses and scar also needs the covering again of normal skin tissue in addition, therefore how to promote skin physiology reparation and how to carry out skin soft tissue regeneration significant with reconstruction.
Skin soft-tissue expansion (tissue expansion) is another the organization restoration technology the most basic that plastic surgery grows up after skin grafting (skin grafting) and skin flaps art.In clinical, to excising the scalp holostrome disappearance causing after huge swollen thing, repairs and need to find enough autologous skin and carry out flap coverage, for this exposure portion of head, require again the skin color, quality etc. of flap coverage try one's best with originally organized identical.The appearance of expander has well solved this problem, and the available skin and the soft tissue that expanded repaired, and its great advantage is that the scalp after repairing is all long hair, and scar substantially has no way of finding under the blocking of hair.Skin tissue expander is implanted near pathology under normal skin soft tissue, by being interrupted to injecting fluid in expander to increase expander capacity, make its effects on surface skin soft tissue produce pressure, by expanding mechanism, to local effect, the division growth of tissue and epidermal cell and space between cells are widened, thereby increase skin area, take out after expander, the available skin soft tissue newly increasing carries out organization restoration and Organ Reconstruction.
The shape of expander and the kind of material are a lot of at present, concrete expander shape is under the skin soft tissue of specific human body privileged site, its propagation process and change of shape are different, need to be according to the expander of extent of disease and position selection suitable shape and capacity.But in clinical and medical research, normally by the experience of doctor's accumulation, select poor effect at present.
Summary of the invention
The object of the invention is in order to solve prior art accurately position and the quantity of anticipation expander shape, size and placement, the risk problem that can only perform the operation and bring by clinical experience.
A skin tissue expander establishing method, comprises step:
According to medical image, set up patient's three-dimensional model;
According to three-dimensional model, measure patient target area area;
According to the actual amplification of target area area estimation skin area;
Set the reversible elasticity factor;
Estimation expander extended surface is long-pending, selects expander and sets expansion parameters.
Further, described is to adopt Triangulation Method to survey according to three-dimensional model measurement patient target area area.
Further, described actual amplification skin area is 1.05～1.5 times of target area area.
Further, described expander extended surface amasss amassing into reality amplification skin area and the described reversible elasticity factor.Wherein, the value of the described reversible elasticity factor is 1～1.5.
Further, the expansion parameters of described expander comprises shape and the placement location of expander, and expander expansion size.
Skin tissue expander establishing method of the present invention, can be on the basis of modeling Measurement accuracy patient target area area, and according to the reversible elasticity factor of setting, the skin area of amplification after estimation expansion, only need to coordinate the skin area of expander amplification and the ratio of target area area, just can obtain applicable expander parameter, thereby select suitable expander, and expand according to expander parameter, the skin that obtains amplification is performed the operation.Method of the present invention can not cause amplification skin inadequate or too much situation, has reduced patient's misery, the risk of having avoided only depending on doctor's clinical experience to bring.
Accompanying drawing explanation
Fig. 1 is skin tissue expander establishing method process flow diagram of the present invention;
Fig. 2 is plane skin area instrumentation plan of the present invention;
Fig. 3 is contoured skin area measurement schematic diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, technical solution of the present invention is described in further details, following examples do not form limitation of the invention.
Adopting dilatation to repair before patient's skin injury, select suitable expander particularly important.Doctor can only obtain affected part area conventionally, then according to personal experience, selects the expander of certain volume, and this will cause larger error, just is more difficult to select the expander of a suitable size for the less doctor of experience simultaneously.
The present invention passes through computer technology, adopt the movable body modeling of volume segmentation and the three-dimensional universal model that Nurbs surface representation is set up human body head, then the CT figure of concrete patient's medical image is carried out to auto Segmentation and matching, and the image that the obtains matching target as three-dimensional universal model will be cut apart, three-dimensional universal model profile is revised, finally approached the best three-dimensional model that obtains concrete patient.According to three-dimensional model, by measuring affected part area and the simulation to the final gained soft tissue of different expanders area, can provide reference for doctor selects expander.
In the present invention, skin tissue expander establishing method flow process as shown in Figure 1, comprises step:
Three-dimensional reconstruction refers to the image volumetric data of the output such as the medical imaging device that utilizes CT or MRI, select as required suitable three-dimensional reconstruction algorithm, obtain the tripleplane's image that can observe from visual angle, diagnostician just can carry out inspections and examinations to the structure of inside of human body tissue or organ easily like this.Because the 3 d surface model data volume being reconstructed by medical image is too large, so in the present invention, first adopt the movable body modeling of volume segmentation and the three-dimensional universal model that NURBS surface representation is set up human body head; Then the contour pattern of concrete patient medical image is carried out to auto Segmentation and matching, and using cutting apart the image that the obtains matching target as three-dimensional universal model, three-dimensional universal model profile is revised, finally approach the best three-dimensional model that obtains concrete patient.
Particularly, the method for building up of three-dimensional head universal model is: on the basis of a large amount of medical images, from the training set of image, obtain the prior imformation of contouring head, this information is to obtain the general shape of contouring head, local variation range and distribution probability density with statistical method analysis, for mankind's head is set up a digitized universal computer model.These statistical knowledges of head object are that the method by training obtains, and main contents comprise a distributed model and gray level model.Movable body model is very suitable for cutting apart of shape matching complicated image and matching.In the modelling phase, conventionally adopt the method that weight is set, with W matrix, preserve the distance between each point and other point, geostationary those points of distance show that they are more stable in whole image, therefore improve their weight, allow them dominate search, drive the search of other point simultaneously.The process of cutting apart matching is exactly the process of body coupling, it is the process of point search, in this process, need to pursue the balance of search speed and accuracy, conventionally adopt image layered method, first this method reduces the pixel of image, then with this head universal model, search for, cut apart and finish rear raising pixel continuation search, until return to original pixel, the accurate and Fast Segmentation of final realize target.So just obtained concrete patient's best three-dimensional head model.This is non-uniform rational B-spline (being called for short NURBS) method representation for model, mainly by adjustment reference mark, to change the shape of curve and surface, and the exploitation right factor, therefore there is larger dirigibility cutting apart with the matching stage, by the method, finally obtain smooth, a continuous model.
Doctor, by X-ray developing line mark affected area, by the medical image scanning, can very clearly observe affected area in the three-dimensional model of setting up, choose the point on some profiles, according to these three-dimensional data points, calculate the size of impaired target area surface area, i.e. patient affected part area.
The area measurement method that the present invention adopts is applicable to any three-dimension curved surface and plane situation, after extracting target area, by Delaunay Triangulation Method, trigonometric ratio is carried out in this target area, the surface area of target area is all triangle area sums after surface model trigonometric ratio.Calculating each triangle area, is that each triangular element is used as to plane treatment, by 3 triangle areas that form, is:
P=(a+b+c)/2 wherein, S represents leg-of-mutton area, and a, b, c represent that respectively three sides of a triangle are long, and P represents half of triangle girth.
As shown in Figure 2, be the two dimensional image that has two water pockets on the crown, by the left side delineate, and survey its area by Triangulation Method; As shown in Figure 3, in order to measure three-dimensional surface area, while surveying area, with triangle gridding, drawn, and surveyed its area by Triangulation Method.
It should be noted that, the present invention is according to patient's three-dimensional model, and packs the analogy model after expansion after expander into, just can measure the skin soft tissue area after expansion.
Combining target region area, can plan the required skin area size of operation, conventionally the required skin area of operation should be able to coverage goal region, and reserved part loss, general loss is 5%～10% of target area area, therefore according to target area area, can estimate that actual operation needs skin area, actual operation needs the namely actual amplification of expander of skin area skin area.
When expander volume increases, it covers skin and increases because of dynamics and physiological mechanism cause, and the amplification area that correspondingly kinetics equation represents is mainly divided into two parts: the one, and reversible elastic part, the one, irreversible growth part.Reversible elasticity is partly to consider the cause of skin retraction, and therefore, after expander installation and expansion, the skin area in its surface amplification, need to calculate its actual amplification area by the reversible elasticity factor.Conventionally the reversible elasticity factor is set in conjunction with clinical experience by doctor, and the skin dividing with partes corporis humani is relevant with expander expansion size.
Expansion parameters comprises shape and the placement location of expander, and expander expansion size.According to the concrete patient's of step 101 gained three-dimensional model, in conjunction with patient's actual damage situation, three-dimensional model is adjusted, provide the placement location of expander model, and the situation after virtual skin expansion.Embedding position, volume and the shape of simulation expander is described in detail in detail below, and calculates the rear skin area of expansion:
Doctor, by X-ray developing line mark affected area, by the medical image scanning, can very clearly observe affected area in volume drawing, choose the point on some profiles, according to these three-dimensional data points, area measurement unit calculates the size of affected area surface area, i.e. target area area.
Then in adjacent domain, observe surface configuration, according to shape, determine position, in healthy adjacent domain, can select a basic configuration, at subcutaneous or muscle lower floor implantation expander.At present the basic configuration of expander mainly contains: circle, kidney shape, crescent, rectangle, long column shape, triangle.The selection of extender will and can decide for the size and form of the normal skin of expanding according to paraprotehetic position, form and extent of disease.In most cases, scalp is selected rectangle, kidney shape, long column shape, and forehead is selected rectangle, and face is selected circle or rectangle.Doctor, according to damaged part, scope and form, in conjunction with the convenience of contiguous healthy area shape and operation technique, selects the shape of embedding position and expander.
According to the reversible elasticity factor and actual amplification area, just can estimate that expander extended surface is long-pending, according to the long-pending size that just can infer expander expansion of expander extended surface.
By method of the present invention, can be on the basis of modeling Measurement accuracy patient target area area, and according to the reversible elasticity factor of setting, the skin area of amplification after estimation expansion, only need to coordinate the skin area of expander amplification and the ratio of target area area, just can obtain applicable expander parameter, thereby select suitable expander, and expand according to expander parameter, the skin that obtains amplification is performed the operation.Method of the present invention can not cause amplification skin inadequate or too much situation, has reduced patient's misery, the risk of having avoided only depending on doctor's clinical experience to bring.
Above embodiment is only in order to technical scheme of the present invention to be described but not be limited; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (6)
1. a skin tissue expander establishing method, is characterized in that, comprises step:
According to medical image, set up patient's three-dimensional model;
According to three-dimensional model, measure patient target area area;
According to the actual amplification of target area area estimation skin area;
Set the reversible elasticity factor;
Estimation expander extended surface is long-pending, selects expander and sets expansion parameters.
2. skin tissue expander establishing method according to claim 1, is characterized in that, described is to adopt Triangulation Method to measure according to three-dimensional model measurement patient target area area.
3. skin tissue expander establishing method according to claim 1, is characterized in that, described actual amplification skin area is 1.05～1.5 times of target area area.
4. skin tissue expander establishing method according to claim 1, is characterized in that, described expander extended surface amasss amassing into reality amplification skin area and the described reversible elasticity factor.
5. skin tissue expander establishing method according to claim 4, is characterized in that, the value of the described reversible elasticity factor is 1～1.5.
6. skin tissue expander establishing method according to claim 1, is characterized in that, the expansion parameters of described expander comprises shape and the placement location of expander, and expander expansion size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210356610.6A CN103678848A (en) | 2012-09-24 | 2012-09-24 | Setting method of skin soft tissue expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210356610.6A CN103678848A (en) | 2012-09-24 | 2012-09-24 | Setting method of skin soft tissue expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103678848A true CN103678848A (en) | 2014-03-26 |
Family
ID=50316382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210356610.6A Pending CN103678848A (en) | 2012-09-24 | 2012-09-24 | Setting method of skin soft tissue expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103678848A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106447782A (en) * | 2016-08-02 | 2017-02-22 | 浙江工业大学 | Face skin three-dimensional reconstruction method based on nuclear magnetic resonance image |
| CN111419298A (en) * | 2020-03-18 | 2020-07-17 | 山东大学 | Skin expansion device and water injection amount control method |
-
2012
- 2012-09-24 CN CN201210356610.6A patent/CN103678848A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106447782A (en) * | 2016-08-02 | 2017-02-22 | 浙江工业大学 | Face skin three-dimensional reconstruction method based on nuclear magnetic resonance image |
| CN106447782B (en) * | 2016-08-02 | 2019-05-28 | 浙江工业大学 | Skin of face three-dimensional rebuilding method based on nuclear magnetic resonance image |
| CN111419298A (en) * | 2020-03-18 | 2020-07-17 | 山东大学 | Skin expansion device and water injection amount control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2365968T3 (en) | PROCEDURE AND SYSTEM OF AUTOMATIC GEOMETRIC AND MECHANICAL ANALYSIS OF TUBULAR STRUCTURES. | |
| CN104091347A (en) | Intracranial tumor operation planning and simulating method based on 3D print technology | |
| CN105078514A (en) | Construction method and device of three-dimensional model, image monitoring method and device | |
| CN104783924A (en) | Breast prosthesis manufacturing method based on three-dimensional printing technology | |
| CN104739548A (en) | System for designing individual artificial knee joint prosthesis based on parameter driving | |
| CN102938027A (en) | Realization method of computer-assisted liver transplantation operation planning system | |
| CN103678847A (en) | Skin soft tissue expanding auxiliary system | |
| CN102525660B (en) | Operation navigation instrument with function of automatically recognizing lesion at craniocerebral part | |
| CN106991720B (en) | Personalized acetabulum reconstruction steel plate pre-bending method based on finite element analysis and operation | |
| CN103678848A (en) | Setting method of skin soft tissue expander | |
| CN111563953A (en) | Jaw bone defect reconstruction method, device, terminal and medium based on machine learning | |
| CN105521562A (en) | Tumor thermotherapy temperature field prediction and control device and method | |
| CN112022345B (en) | Three-dimensional visual preoperative planning method, system and terminal for abdominal wall defect reconstruction | |
| CN112070898B (en) | Modeling method for high-quality grid small pig head finite element model | |
| CN106934810A (en) | A kind of spine correcting device | |
| CN107085866A (en) | The analog simulation method and system of a kind of straight bone CT images of human body | |
| Alfano et al. | Prone to supine surface based registration workflow for breast tumor localization in surgical planning | |
| CN205672111U (en) | In congenital heart disease operation, individuation haemodynamics optimizes 3 D stereo sticking patch | |
| CN111839728A (en) | Nose plastic simulation method | |
| Kern | Large population evaluation of contact stress exposure in articular joints for prediction of osteoarthritis onset and progression | |
| CN110930389A (en) | Region segmentation method, device and storage medium for three-dimensional medical model data | |
| Din et al. | Nasofacial morphometric analysis for nasal reconstruction | |
| Reynolds et al. | Mapping melanoma lymphoscintigraphy data onto a 3D anatomically based model | |
| Chang et al. | The adaptive balloon forces for active surface models in skull repair technique | |
| CN117576124B (en) | Abdominal ct image liver segmentation method and system based on artificial intelligence |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |