38
© 2018 Vital Images, Inc. | www.vitalimages.com | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall M-06234B The 3D printed anatomical model is not for diagnostic use.

Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

  • Upload
    others

  • View
    4

  • Download
    0

Embed Size (px)

Citation preview

Page 1: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 1

Case: Thorax Emphysema (airways)Step-by-Step Guide

3D printing of the airway wall

M-06234BThe 3D printed anatomical model is not for diagnostic use.

Page 2: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 2

Case Airways - Learning objectives

At the end of the session, the student will be able to:

1. Use and correct automatic segmentation – lung aiways using the generic Vitrea®

Advanced Visualization tools such as Vessel Grow, Dilate, Sculpt.

2. Generate, verify and improve a region shell as airway wall model.

3. Generate a .stl mesh model of the airway, preview the model in 3D and MPR viewers, save the model on disk.

4. Reuse the .stl airway model in an external software (such as Meshmixer).

5. Visualize the .stl model, change the rendering.

6. Apply a cut plane on the model, analyze the model, its dimensions, strength, orientation, modify the orientation and location for printing.

7. Export the modified .stl file, prepare for 3D printing, select printer or printing service.

Page 3: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 3

Case: Thorax Emphysema: The full airway wall

1. Load case: Thorax emphysema – series ID 4.

2. Once the automatic segmentation of the lung and the airways is completed, uncheck the Lung region.

3. Choose the gray background.

4. For the selected airway region: tint/MPR, Show volume. Scroll in MPR (axial or coronal). See the imperfect segmentation.

5. To improve the airway segmentation, apply denoising – Medium (optional but beneficial).

6. Select MPR Window level showing a difference in gray levels between airways and lungs: for example: 800/-800HU.

7. Grow in the trachea or bronchus until you get more small branches than the automatic segmentation. (stop and backup if a blue selected blog appears in the lung)

8. Rename the region: Airways. Click “Add To” to create the new region.

9. Select Airways region in anatomy list, tint/MPR, show volume.

10. Check new branch. If OK, right click / Dilate 1X, Done.

11. Create shell.: Choose 2.5mm thickness. Check the shell in MPR. OK.

12. Trim airway wall branches with Sculpt tool in 3D. First, show volume. Draw around branches to trim. Send to Base (that is not segmented)

13. Export airway wall as .stl. Show in MPR/3D, preview .stl.

14. Choose export option 3. Export as .stl. Choose a directory.

15. Next step: open .stl in Meshmixer.

16. Meshmixer – prepare printing.

Page 4: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 4

Select Thorax Emphysema (1). Applications Choose: Pulmonary Analysis (2). Ser#, Select 4 (3). Open case (4).

1

4

2

3

Page 5: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 5

Lung and Airways are viewed (1). Uncheck Lung to show Airway (2).

3

12

Page 6: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 6

Open Lt click menu, choose 3D Background Color (1). Choose gray background, adjust slider bar on Rt-View color in Box. Click OK (2). Gray Background final (3).

1

2

3

Page 7: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 7

Check automatic segmentation. Hide lung region (2).

2

1

Page 8: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 8

Improve auto segmentation: apply denoising Medium filter (1). Select WL MPR to distinguish lung vs. airways: 800/-800HU (2). Grow in trachea (MPR) to add more branches (3). AddTo (rename) to airway region (4).

1

2

3

4

Page 9: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 9

Tint/MPR the airway region(1). Show volume (2). We added more branches (3).

1

2

3

Page 10: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 10

Tint/MPR, show volume: we can dilate the selection 1X for more accurate diameter (1).

1

2

Page 11: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 11

To dilate the airway region, select (1).

1

Page 12: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 12

Dilate the selection 1X (1) for more accurate diameter. Click: “Done” (2)

1 2

Page 13: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 13

After dilation: better airway lumen delineation.

Page 14: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 14

Let us create the shell for the airway (1).

1

Page 15: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 15

Choose a thickness larger than the slice thickness. Here,1.5mm is fine (1). If needed, click preview (2) to check before creating the new region.

1

2

Page 16: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 16

Check the shell in 3D (1) and MPR.OK (2).

1

2

Page 17: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 17

The new airway shell region has been created (1). The distal branches are closed. Let’s trim them.

1

Page 18: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 18

Trim the airwall branches using Sculpt tool in 3D (1) and (2) Add selection to “Base” (=not segmented).

1

2

Page 19: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 19

Let’s export the new airway shell region as a .stl file (mesh model) (1).

1

Page 20: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 20

Choose the quality option 3 (1). Click Preview (2) to see the shell region as a .stl model in MPR and 3D.

12

Page 21: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 21

The mesh model is now visible in 3D (1) and MPR (2).Click Save stl (3) to save the model on your disk.

1 2

3

Page 22: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 22

Choose a location (directory) for the .stl file (1). OK (2).

1

Page 23: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 23

The file has been saved.

Page 24: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 24

Editing the 3D model

Use of Meshmixer software is for demonstration purposes only

Page 25: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 25

Open Meshmixer and import the mesh model.

Page 26: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 26

Check the mesh model. See object browser (list of .stl files for the same model).

3D rotation: right mouse buttonZoom = alt + right mouse buttonPan: alt + mouse wheel

1

2

Page 27: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 27

Change the rendering - transparent: select ”Shader” (1). Drag icon into the model (2-3).

3D rotation: right buttonZoom = alt + right mouse buttonPan: alt + mouse wheel

1

2

3

Page 28: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 28

Apply a cut plane on the model.

3D rotation: mouse wheel buttonZoom = alt + right mouse buttonPan: alt + mouse wheel

1

2

Page 29: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 29

Move, orient cut plane (you can also draw a line outside the model).

3D rotation: right buttonZoom = alt + right mouse buttonPan: alt + mouse wheel

Page 30: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 30

After applying the cut plane.

3D rotation: right buttonZoom = alt + right mouse buttonPan: alt + mouse wheel

Page 31: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 31

Analyze the model – check defects. Here the model is ok.

Page 32: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 32

Analyze the model – check dimensions – if needed, resize for printing.

Page 33: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 33

Analyze the model – orient model for printing, adjust settings, update or accept.

Page 34: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 34

Analyze the model – after model positioning on the printer tray.

Page 35: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 35

Analyze the model – Visualize mechanical weaker areas.

Page 36: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 36

Analyze the model – export as .stl- the modified model.

Page 37: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 37

Printing menu – material selection, color selection and select printer

Page 38: Case: Thorax Emphysema (airways) Step-by-Step Guide · © 2018 Vital Images, Inc. | | 1 Case: Thorax Emphysema (airways) Step-by-Step Guide 3D printing of the airway wall The 3D printed

© 2018 Vital Images, Inc. | www.vitalimages.com | 38M-06234B