Rapid Modeling für bildgestützte Interventionen Prof. Dr.-Ing. Stefan Weber

Size: px

Start display at page:

Download "Rapid Modeling für bildgestützte Interventionen Prof. Dr.-Ing. Stefan Weber"

Clifton Holt
8 years ago
Views:

1 Rapid Modeling für bildgestützte Interventionen Prof. Dr.-Ing. Stefan Weber ARTORG - Research Center ISTB - Institute for Surgical Technology and Biomechanics University of Bern

2 Outline > Clinical Challenge: Precise Surgical Planning > Approach: Using 3D Models created by Rapid Prototyping > Workflow for creation of 3D planning models > Examples > Conclusion 2

3 Implantation Technology within ARTORG Cooperation and Research Focus Implantation Technology Artificial - Lung - Kidney - Liver - Bladder Research Artificial - Eye - Ear Research Artificial - Heart - Cardiac Assist Devices - Cardiovascular Intervention Research Mechatronic Device Technology Image Analysis / Computer Vision Computer Assisted Surgery / Surgical Navigation Tissue Engineering 3

Heart - Cardiac Assist Devices - Cardiovascular Intervention Research Mechatronic Device

4 Center for Computer Aided Surgery Center for Computer Aided Surgery (Directors: M. Caversaccio, S. Weber) Medical Image Processing (Head: Mauricio Reyes Surgical Navigation (Head: Guoyan Zheng) Surgical Instruments (Head: Stefan Weber) Statistical Shape Models 2D-3D Registration Medical Robotics Image Analysis Orthopaedic Navigation Smart Instruments Soft Tissue Simulation Statistical Shape Models Rapid Prototyping Soft Tissue Navigation 4

Instruments (Head: Stefan Weber) Statistical Shape Models 2D-3D Registration Medical Robotics Image Analysis

5 Clinical Challenge Planning of Treatment > Multimodal Image Analysis > Identification of ROI > Creation of patient model > Precise diagnosis > Optimal treatment decision > Preparation of treatment > Performing of treatment 3D Subtraction 3D Angio Angio CT 5

Precise diagnosis > Optimal treatment decision > Preparation of

6 Approach: Application of 3D Models Advanced Surgical Planning > Multimodal image representation in one model > Emphasis on details > Incorporation of additional functional features Technical Challenge > Multimodal image handling > Advanced Image Segmentation > Useful model design > Actual Model creation RP process, handling of fragile structures 6

functional features Technical Challenge > Multimodal image handling > Advanced Image

7 Overview on Workflow Oberflächenerstellung Nachbearbeitung Rapid Modelling Rapid Manufacturing 3D Scan NextEngine Volumendaten MeVisLab 3D Druck ZCorp Vakuumguss MCP CAD Catia, Solidworks Modellierung 3DS Max February 3D-Bilddaten 25, 2009Dicom 7

Volumendaten MeVisLab 3D Druck ZCorp Vakuumguss MCP CAD

8 Step1: Image Processing Adobe Acrobat Document > Multimodal Image Registration (CT, MRI, 3DAngio, Fluoro > Segmentation of interesting organs, vessel, structures > Important: Communication with medical partners 8

Fluoro > Segmentation of interesting organs, vessel,

9 Step 2: Model Preparation > Creation of separate surface models > Preparation of additional surface properties > Cropping, scaling, smoothing > Additional features: stand, rests, support structures 9

10 Step 3: Printing of 3D Model > 3D Printing technology: Z-Corporation > Building Size: 300 x 200 x 300 mm > CYMK Coloring of models > Creation of rigid and flexible Models 10

11 Step 4: Post Processing > Removal of model from machine > Cleaning: removal of powder, Cleaning of hollow structures > Maintain delicate structures i.e. thin vessels, thin surfaces > Infiltration with cast resin 11

12 Advanced Surgical Planning EXAMPLES 12

13 Example: 3D Printing of Aneurysms (together with Dept. Neurosurgery, Profs. Raabe, Schroth) > Challenge: Image registration (CT, MRI, Angio) > Segmentation of thin vessels: < 1 mm > Preparation of small vessels in 3D print 13

14 Example: 3D Printing of Aneurysms (together with Dept. Neurosurgery, Profs. Raabe, Schroth) > Preparation of postoperative model > Printing in 2:1 for optimal display of thin vessel 14

15 Example: 3D Printing of Aneurysms (together with Dept. Neurosurgery, Profs. Raabe, Schroth) 1:1 1.5:1 2:1 15

16 Pre-Bending of implants based on 3D jaw models (Courtesy: Hallermann, Olsen, Bardyn, Smolka, Iizuka, Büchler) > Planning of reconstruction of Mandible with fibula > 3D print of Reconstruction plan > Prebending of plate implant system for geometric accuracy > n = 20 16

reconstruction of Mandible with fibula > 3D print of

17 Planning of complex liver resections (together with Prof. Candinas, Drs. Interbitzin, vom Berg) > Creation of functional liver model (by MeVis FhG, Germany) > Definition of surgical strategy (green = resection plane) Medical Imaging Phantoms > Printing of complete model 1:1 17

18 Planning Radiooncology / -surgery (together with Prof. Aebershold, Dr. Pica, CHUV) > Challenge: Various Imaging from different points in time > Model of anatomical situation for planning of brachytherapy 18

19 Soft Tissue Guidance Future Projects (Profs. Carrel, Tevaearai, Vandenbergh, Drs. von Garnier, Carboni) > Thoracic surgery Image based planning for tumour resections, biopsies, radiation therapy Instrument guidance during Video Assisted Thoracic Surgery > Cardiovascular Surgery Catheter tracking, Instrument guidance near the heart 19

resections, biopsies, radiation therapy Instrument guidance during Video Assisted

20 Treatment of Femoroacetabular Impingement (FAI) (together with Prof. K. Siebenrock, Drs. Tannast, Steppacher, Ecker) Challenges > Navigation accuracy study > Automatic planning of hip joint preserving treatments > Based on 3D alpha and 3D LCE angle 20

Tannast, Steppacher, Ecker) Challenges > Navigation accuracy

21 RP for Computer Aided Surgery (together with Profs. Caversaccio, Stieger ENT) > Needle tracker (Prototype) for PET / CT Biopsies > Housing for robotic system for ENT Surgery 21

22 Complex Imaging Phantoms for PET/CT (together with Dept. Nuclear Medicine, Prof. Krause, T. Weitzel) 22

23 Conclusion > 3D Modelling is a means of Computer Aided Surgery > 3D Modelling is not just Rapid Prototyping it requires knowledge Medicine, Imaging, Image processing, prototyping > Clinicians benefit by image processing and actual 3D model > Benefit for clinicians Confident intervention preparation (Confidence) Reproducible treatment decision finding (Reasoning) Implant / Template design (Precision, Time) 23

24 Thanks to.. >. Clinical Network in Bern Neurosurgery (Prof. Raabe) Neuroradiology (Dr. J. Gralla, Prof. G. Schroth) Angiology (Prof. I. Baumgartner) Urology (Prof. G. Thalmann) Visceral Surgery (Prof. D. Candinas) Cardiology (PD Dr. A. Kadner, Profs. H. Tevaearai, T. Carrel) Radiooncology (Dr. A. Pica, Dr. N. Blumstein, Prof. Aebershold) ENT Surgery (Prof. Caversaccio) Audiology (Prof. C. Stieger) >. and of course the whole ARTORG / ISTB team 24

25 Contact Details > University of Bern > ARTORG Center for Biomedical Engineering Research > > Prof. Dr.-Ing. > Stefan Weber > Implantation Technology of Artificial Organs > Stauffacherstrasse 78 > CH-3014 Bern > Tel > Fax > Mob > > http: and 25

Image Area. View Point. Medical Imaging. Advanced Imaging Solutions for Diagnosis, Localization, Treatment Planning and Monitoring. www.infosys.

Image Area. View Point. Medical Imaging. Advanced Imaging Solutions for Diagnosis, Localization, Treatment Planning and Monitoring. www.infosys. Image Area View Point Medical Imaging Advanced Imaging Solutions for Diagnosis, Localization, Treatment Planning and Monitoring www.infosys.com Over the years, medical imaging has become vital in the early