文档教程3-matictutorial

1、3-matic Medical 9.0 Tutorial47/ Content/Content1/Introduction to 3-matic Medical2/Chapter 1: Import3Exercise 1. Import STLs3Exercise 2. Import a Mimics project file4Exercise 3. Import a CAD file of a heart valve4/Chapter 2: Basic5Exercise 1: Align the heart valve with the aorta5/Chapter 3: Analyze8E

2、xercise 1. Wall Thickness Analysis8Exercise 2. Curvature Analysis9Exercise 3. Measure and analyze using fitted primitives10Exercise 4. Comparison analysis13/Chapter 4: Design14Exercise 1. Give the aorta a wall thickness for RP14Exercise 2. Aneurysm design16Exercise 3. Designing an acetabular cup17Ex

3、ercise 4: Creating a Custom Cardiovascular Benchtop Model25Task 1. Clean and Optimize the Geometry25Task 2. Add a Thickness and Trim the Model25Task 3. Design Base and Supports26Task 4. Apply Finishing Touches and Export29Exercise 5. Design of a patient specific cranial plate31Task 1. Indicate the o

4、utline of the gap31Task 2. Mirror the healthy geometry and create a guiding line33Task 3. Creation of the cranioplasty prosthesis35Task 4. Removing the undercuts35Task 5. Creating a smooth edge and chamfered edge36/Chapter 5: Remesh38Exercise 1. Remeshing38Exercise 2. Create Volume Mesh42Exercise 3.

5、 Optimize the mesh43/Chapter 6: Export45Exercise 1: Anatomical Reverse Engineering45/Mimics Innovation Suite User Community47Materialise Technologielaan 15 3001 Leuven Belgium mimicsmaterialise.be/ Introduction to 3-matic Medical3- matic Medical is unique software that combines CAD tools with pre-pr

6、ocessing (meshing) capabilities. To do so, it works on triangulated (STL) files and as such it is extremely suitable for organic/freeform 3D data, like the anatomical data coming from the segmentation of medical images (from Mimics). We call it Anatomical CAD.Import your anatomical data in 3-matic M

7、edical to start doing real Engineering on Anatomy, like thorough 3D measurements and analyses, design an implant or surgical guide, or prepare the mesh for finite element modeling.Since 3-matic Medical can import CAD data, but also do reverse engineering of anatomical data to CAD data, it is perfect

8、ly complementary to your CAD package.NOTICE ON INTENDED USE: 3-matic Medical is intended for use as software for computer assisted design and manufacturing of medical exo- and endo-prostheses, patient specific medical and dental/orthodontic accessories and dental restorations.Copyright 2014 Material

9、ise NVTutorial 3-matic Medical 4/2014, L-10078 Revision 1/ Chapter 1: ImportExercise 1. Import STLs1.Open a new 3-matic Medical project.Click on Import part. Select the STLs of the aorta (Aorta1 and Aorta2) and import them together. During import, split surfaces with an angle of 45. This will make s

10、eparate surfaces of all inlets and outlets.They are positioned on the same location, since they originate from the same dataset. No registration is necessary.Exercise 2. Import a Mimics project file1. Open 3-matic Medical. In the File menu, select Import part and browse to C:MedDataInnovationCourseF

11、inishedFemur.mcs. The 3D objects and CAD files are loaded into your 3-matic Medical project.Exercise 3. Import a CAD file of a heart valveIn case you want to combine the STL model of the aorta with a heart valve design from a CAD package, you can import the IGES file of this valve. The valve used in

12、 this exercise is NOT a real heart valve; it is redesigned to resemble a common valve.The IGES file is triangulated upon import.1. Go to File Import Part (Ctrl + L) and browse for heart valve.igs file.2. In the Import dialog, enable Fix Normals and Automatic stitching./ Chapter 2: BasicExercise 1: A

13、lign the heart valve with the aortaUpon import heart valve.igs, the valve will not be positioned correctly yet and needs to be aligned to the aorta1. Use the Aorta 1 for this exercise.1.Go to Align and choose Arc to Arc Align.2. Fit an Arc on the aorta inlet as the fixed entity. Fit another Arc on t

14、he outer surface of the heart valve as the moving entity. Make sure the arrows are aligned properly, to fit the heartvalve in the right direction.3. Choose Coincident or Coincident face to face, depending on the direction of the arrows.4. Use Interactive Translate to finetune the positioning if nece

15、ssary. Select the Object coordinate system to translate.Now we need to virtually attach the aorta to the valve. Therefore we will modify the aorta inlet to fit on the heart valve.5. Move the separated surfaces back to the Aorta part. Drag and drop the surfaces in the active scene.6. Go to the Fix ta

16、b and choose Project Mesh. Select the inlet surface as entity. Method is On Selection. As target entity select the outer surface of the valve.7. Apply and the result should look like this:8. To open the inlet, delete or hide the surface.If you want to prepare this assembly for CFD analysis, the valv

17、e still needs to be remeshed and the nodes should match the connecting nodes on the aorta./ Chapter 3: AnalyzeExercise 1. Wall Thickness AnalysisTo analyze the thickness of the cortical bone, you can run a wall thickness analysis.1. Import Finished Femur.mcs.2. In the Analyze tab, click on the Creat

18、e Wall Thickness Analysis button and select Cortical as Entity. Set the Maximum Wall Thickness to 10.0mm. A histogram with the wall thickness distribution will be displayed and a range of colors will be applied on the Cortical 3D object. The green color represents the thinner structures, while the r

19、ed color corresponds to the thicker regions. Feel free to play with the slider thresholds for better visualization.3.Try to measure the wall thickness locally.Exercise 2. Curvature AnalysisFor the purpose of guide design it might be interesting to analyze the curvature of the bone.1. Select the Crea

20、te Curvature Analysis button and select the Femur. Choose Maximum curvature as Analysis type, Noise as Mesh type and set the Fitting radius to 6.0mm. Apply the operation.A histogram with the curvature distribution is displayed and the 3D object is represented in a range of colors. The blue color rep

21、resents the regions with local convexity, while the red color corresponds to areas of concavity.Exercise 3. Measure and analyze using fitted primitives1. Click on the Rectangular Mark button in the Mark tab and select the femur head of the Femur object. To make sure that the triangles are marked thr

22、ough the femur head, hold the SHIFT button whilst selecting the femur head.2. In the Analyze (or Design) tab, select the Create Analytical Sphere function.3. Click on Mark Unmark All.4. Click on the Rectangular Mark button in the Mark tab and select the femur shaft of theFemur object. Hold the SHIFT

23、 button to mark the triangles through the object.5. In the Analyze (or Design) tab, select the Create Line function. Choose the Fit ruled surface direction as the Method and the marked triangles as Fitting entities.6. Make resulting line longer, by using the Prolong line function in the Analyze or D

24、esigntab.7. Click on Mark Unmark All.8.Mark the femur neck of the Remeshed_Femur object using the Rectangular Mark tool. Make sure you hold the SHIFT button when you mark the rectangle in the neck.9. In the Analyze (or Design) tab, select the Create Line function. Choose the Fit ruled surface direct

25、ion as the Method and the marked triangles as Fitting entities.10. Measure the angle using the Angle measurement from the Measure toolbar. Select the Line To Line method and indicate the two lines. Click on Apply. Hide the femur first so that you can select the lines properly.Exercise 4. Comparison

26、analysis1. Import Aorta1 and Aorta 2 from Demo Files and split surface with 45. (refer to Import : Exercise 1)Try measuring the analysis locally.2.Go to the Analyze tab to create a Part Comparison Analysis to compare the aorta at systole (Aorta2) with the aorta at diastole (Aorta1).3. Set the Histog

27、ram range from -3mm to 3mm.4./ Chapter 4: DesignExercise 1. Give the aorta a wall thickness for RP1. Import Aorta1 from Demo Files into 3-matic Medical with Split Surface check ON.2. Separate the inlet and outlet surfaces to another part, so the aorta only consists of the outer surface.3. Select the

28、 Offset from the Design toolbar. Select the Aorta part as entity and select solid. A thickness of 1 mm is okay for building. The picture is an example of this aorta built on an Objet machine.Exercise 2. Aneurysm designTo investigate the influence of aortic aneurysms with different sizes and shapes o

29、n blood flow or pressure, it can be interesting to be able to design different aneurysms.1. Import Aorta2 from Demo Files. Go to the Finish tab and select Push and Pull. Set the distance to 5mm and the diameter to 40mm. Hold Ctrl to pull on a part of the surface of the descending aorta. Rotate the a

30、orta to pull on all sides.Here you see an example of a CFD analysis of blood pressure on a similar aorta:Exercise 3. Designing an acetabular cupIn this exercise we will use forward engineering to design a customized acetabular implant, using patient data. This way, it is possible to create a perfect

31、ly fitting prosthesis. In the image below you see an example of such an implant that we designed for a patient. In this exercise we will only design one flange, but of course the method can be copied for the other flanges.1. Import FinishFemur.mcs (refer to Import: Exercise 2)2. First we will make a

32、 copy of the pelvic bone, therefore select the Pelvis in the database tree, right-click and from the context menu select Duplicate. To make the original 3D model invisible, right-click on the Pelvis 3D object and select Hide from the contextmenu.3. We will now simplify the Pelvis_duplicated. Select

33、the Create Curve function in the Curve tab, choose as Curve Creation Method the Attached Curve option and enable Split surfaces. Now draw a curve over the contour of the acetabulum.4. Select the inscribed surface and select delete from the context menu.5. From the Design tab, select the Surface Cons

34、truction tool. Create a surface based on the created curve.6. We will use the Analytical Sphere, weve fitted onto the femur head during the analyzing exercise, as a start for the design of the acetabular cup. In Design tab, click on the Convert Analytical Primitive to Part button and select your sph

35、ere.7. To give the sphere a thickness, go to the Design tab and click on the Hollow button. Fill in the parameters as indicated below and click on Apply.8. To cut the hollow sphere we will create a plane. In the Design (or Analyze) tab, select the Create Datum Plane button. Select the Fit plane and

36、select the created surface as Fitting Entity.9. You can still adjust the position of the Datum Plane. In the Align tab, select the Interactive Translate, choose the Object coordinate system and reposition the plane to the borders of the acetabular cavity. Make sure the plane doesnt intersect with th

37、e edges of the acetabulum.10.Cut the hollow sphere with the Datum Plane and delete the outside part. In the Design tab select the Cut operation and select the Sphere. This finishes the design of the acetabular cup. In the next steps we will add a flange to the design.11. From the Sketch menu select

38、New Sketch. Select Fit Plane as Method and as Fitting Entity, select the surface that resulted from the Cut operation.12.Import the outline of the pelvic bone into the sketch and project the contours of the acetabular cup onto the Sketch. 13. Create a line sequence on the ischium bone. Click on the

39、Create line action button in the Sketch tab and select Line sequence. Draw three line segments and press the Escape key to finish.14. Add constraints to the line segments. Click on the Parallel button.15. Set a distance of 7.0mm between the two parallel line segments.16. Set a length of 15mm for eac

40、h of the two parallel line segments.17. Select the Circle Arc (3 Points). Indicate the extremities of the line segments and the radius of the arc.18. Make sure each of the line segments is tangent to the arc.19. We will now project the 2D flange onto the 3D surfaces. From the Curve tab select the Pr

41、oject Curve tool. The Entity will be the Sketch001 and the Target Entity will be the Pelvis_duplicate 3D object.We will project according to the normal of the sketch. Highlight the direction parameter and subsequently select the Z-axis of the Sketch. Flip the direction by clicking on the toggle dire

42、ction button. Ensure to check ON the Create surface sets checkbox. Click on Apply to finish the operation.20. Merge the surfaces resulting from the projection and separate a copy of the surface to a new part. Rename it to Flange.NOTE: The different surfaces are easily selectable as they are separate

43、d in a surface set.21. Move the surface over 1 mm to give it a thickness.22. To attach the flange to the acetabular cup select the Local Boolean operation from the Design tab. Select the flange as Entity 1 and the outer surface of the sphere as Entity2. Using the default Local Boolean Parameter the

44、acetabular cup and the flange will be united.23. We will use a predefined screw to create the fixation holes. Go to File Import and choose STL. Open Screw.stl.24. From the Align tab select Interactive Positioning. In the Work Area select the screw and as Method select the Object Coordinate system. Y

45、ou can now drag the Screw over the surface of the flange. To create multiple holes, duplicate the screw and use the Interactive Positioning tool to position them.25. Merge all screws by selecting them and selecting Merge from the context menu.26. Subtract the screws from the flange. Select the Spher

46、e with thickness as entity and the merged screws as Subtraction Entity. Click on Apply.Exercise 4: Creating a Custom Cardiovascular Benchtop ModelOne growing application in the cardiovascular market is the ability to design and print a benchtop model. Benchtop models are helpful for many application

47、s including stent placement and flow studies. The following exercise will explain the steps necessary to create such a model.Task 1. Clean and Optimize the Geometry1. Import the AAA.stl file into 3-matic by clicking File Import Part.2. Smooth any rough areas on the surface of the model using the Loc

48、al Smoothing tool found under the Finish Menu. Click and drag to apply the Local SmoothingTask 2. Add a Thickness and Trim the Model1. Create a shelled structure using the Hollow operation found under the Design Menu. The vessel wall will be created at 2 mm thick. Press Apply to create the Hollow2.

49、Use the Trim tool (Finish menu) to cut the endings off of the inlets and outlets of the aorta. Create a box around the endings of the inlets and outlets and press apply to performthe Trim.Task 3. Design Base and Supports1. Create a New Sketch, found under the Sketch tab, using the Through 1 point, p

50、arallel to a plane method. The Through 1 point, parallel to a plan option is found under the Method tab. As the parallel plane, select the ZX-plane of the world coordinate system. Choose a point on the posterior side of the aneurysm.2. Translate this sketch normal to the Y-axis using the Translate f

51、unction under the AlignTab. Move the sketching plane 30 mm so it is not intersecting the anatomy at any point.3. Import the outline of the aorta into the sketch. This will serve as a guide to draw theprofile of the base.4. Using Create Line Sequence in the Sketch toolbar, draw a profile of the base

52、in the Sketch tab. Feel free to be creative, but be sure that it completely contains the aorta profile within the base.5. To give the base thickness, Extrude the sketch in both directions 3 mm (Design menu). The result should then have a 6 mm thick base. Hide the Sketch afterwards.6. Now, supports w

53、ill be designed to attach the base to the aorta by creating and attaching cylinders to the base and aorta (Design Create Primitive Create Cylinder). Use the “Expert Mode” Option (found at the bottom of the 3-matic window) Extend Length to extend the cylinders into the AAA. Use the 2 Points method to

54、 create the cylinders with one point on the base and one point on the AAA model. The Extend Length option is used to extend the length of the cylinder so that it fully intersects with the AAA model. Press F3 to display the filter options which show possible point selections.7. Perform a Local Boolea

55、n operation (in the Design Menu) to join the base and supports. The first entity will be the extruded supports, and the second will be the top surface of the base.8.Use a second Local Boolean to join the supports to the model.Task 4. Apply Finishing Touches and Export1. Apply text to the top of the vessel using Quick Label in the Finish Menu.2. Use the Fillet tool under the Finish menu to smooth the upper contour of the base. Use a radius of 1 mm.3. Add any other finishing touches to the part including final Local Smoothing, found under theFi