Michael Truppe | University of Vienna (original) (raw)
Papers by Michael Truppe
Applied sciences, Jul 17, 2020
Featured Application: Latest digital technology supported by anatomy and dental implantology is m... more Featured Application: Latest digital technology supported by anatomy and dental implantology is mandatory to accomplish safe and secure auricular osseointegrated implant treatment.
International Journal of Computer Assisted Radiology and Surgery, Jun 1, 2006
Proceedings of SPIE, Dec 27, 2000
ABSTRACT
Lecture Notes in Computer Science, 1998
We present the design and the results achieved in the development of a hybrid magneto-optic track... more We present the design and the results achieved in the development of a hybrid magneto-optic tracking system suitable for computer aided surgery. Our approach towards a reliable and accurate hybrid position sensor system that is not entirely dependent on an unobstructed line-of-sight between sensor assembly and patient is the combined use of an optical tracker with a direct current (DC) pulsed electromagnetic tracking system (EMTS). The proposed hybridization method aims at providing both accurate and uninterrupted position data by overcoming the drawbacks of both tracking technologies. Results presented include the preliminary assessment of algorithms for fusion of position data from both sensor systems, for calibrating the EMTS to the environment and for detecting systematic distortions in the DC tracking system caused by ferromagnetic materials in order to improve the reliability of the proposed system.
Journal of Oral and Maxillofacial Surgery, Dec 1, 1999
The objective of this study was to evaluate the clinical value and feasibility of surgical telena... more The objective of this study was to evaluate the clinical value and feasibility of surgical telenavigation and teleassistance technology in the field of craniomaxillofacial surgery. The technology is based on the principles of augmented reality environment technology and remote stereotactic visualization. A consultant surgeon in a remote location receives video, audio, and stereotactic navigation data from the operation site almost in real-time and, using a head-mounted display, is emerged in the surgical augmented reality environment. By telepresence or teleconsultation, the composite images and superimposed graphics (instruments, target structures, landmarks, contours) can be seen and discussed in connected clinics with the possibility of interactive manipulation and assistance. Interactive teleassistance was used in 27 cases of various types craniomaxillofacial surgery. The principles of computer-aided telenavigation were applied successfully. Technical problems in 6 cases did not cause a breakdown of overall system performance. Teleconsultation with remote experts is a useful tool, although some shortcomings exist. The financial and personal effort involved is considerable.
Biomedizinische Technik, 1998
Medical devices equipped with position sensors enable applications like image guided surgical int... more Medical devices equipped with position sensors enable applications like image guided surgical interventions 1 • 2 , rendering of 3D ultrasound Images 6 and virtual or augmented reality applications. In our experiments we have assessed the systematic distortions introduced by common surgical tools in direct current (DC) pulsed electromagnetic tracking Systems (EMTS). Our work aims at utilising the EMTS s an auxiliary sensor System that Supports a highly accurate optical tracking System (OTS) during periods of obstruction. A method for automated assessment of the accuracy of data from the EMTS has also been evaluated in laboratory experiments.
International Journal of Computer Assisted Radiology and Surgery, May 23, 2006
3D surface rendering and creating panoramic view for dental application Chanjira Sinthanayothin Æ... more 3D surface rendering and creating panoramic view for dental application Chanjira Sinthanayothin Æ Wichit Tharanon Advance Dental Technology Center (ADTEC), Pathumthani, Thailand
Journal of Oral and Maxillofacial Surgery, Mar 1, 2004
This long-term study gives a review over 7 years of research, development, and routine clinical a... more This long-term study gives a review over 7 years of research, development, and routine clinical application of computer-aided navigation technology in dental implantology. Benefits and disadvantages of up-to-date technologies are discussed. Materials and Methods: In the course of the current advancement, various hardware and software configurations are used. In the initial phase, universally applicable navigation software is adapted for implantology. Since 2001, a special software module for dental implantology is available. Preoperative planning is performed on the basis of prosthetic aspects and requirements. In clinical routine use, patient and drill positions are intraoperatively registered by means of optoelectronic tracking systems; during preclinical tests, electromagnetic trackers are also used. Results: In 7 years (1995 to 2002), 55 patients with 327 dental implants were successfully positioned with computer-aided navigation technology. The mean number of implants per patient was 6 (minimum, 1; maximum, 11). No complications were observed; the preoperative planning could be exactly realized. The average expenditure of time for the preparation of a surgical intervention with navigation decreased from 2 to 3 days in the initial phase to one-half day in clinical routine use with software that is optimized for dental implantology. Conclusions: The use of computer-aided navigation technology can contribute to considerable quality improvement. Preoperative planning is exactly realized and intraoperative safety is increased, because damage to nerves or neighboring teeth can be avoided.
Medical Image Computing and Computer-Assisted Intervention, Oct 11, 1998
We present the design and the results achieved in the development of a hybrid magneto-optic track... more We present the design and the results achieved in the development of a hybrid magneto-optic tracking system suitable for computer aided surgery. Our approach towards a reliable and accurate hybrid position sensor system that is not entirely dependent on an unobstructed line-of-sight between sensor assembly and patient is the combined use of an optical tracker with a direct current (DC) pulsed electromagnetic tracking system (EMTS). The proposed hybridization method aims at providing both accurate and uninterrupted position data by overcoming the drawbacks of both tracking technologies. Results presented include the preliminary assessment of algorithms for fusion of position data from both sensor systems, for calibrating the EMTS to the environment and for detecting systematic distortions in the DC tracking system caused by ferromagnetic materials in order to improve the reliability of the proposed system.
Lecture Notes in Computer Science, 1997
ABSTRACT In computer aided maxillofacial surgery we have shown the feasibility of computer naviga... more ABSTRACT In computer aided maxillofacial surgery we have shown the feasibility of computer navigation assistance for a wide variety of indications. Additional data of various imaging sources superimposed during operation with live video from the operating field provide help and useful information even for the experienced surgeon. Rather than the simple identification of target structures in a CT our goal is the intraoperative visualization of complex presurgical simulations of osteotomies of the midface. Because of the interdisciplinary nature the expert needed is not necessarily the surgeon. We present a system (Artma Virtual Patient) that enables a remote expert to observe the surgical procedure via the Internet and interactively modify the intraoperative visualization from his remote location. First results are presented and a live transmission of Stereotactic and video data is established to the conference site.
Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology, 2015
Auricular malformation treated by placement of an osseointegrated implant-supported epithesis usi... more Auricular malformation treated by placement of an osseointegrated implant-supported epithesis using telenavigation and model simulation: A
Mund-, Kiefer- und Gesichtschirurgie : MKG, May 1, 2000
Zusammenfassung Die exponentielle Zunahme des Informationsflusses in der Medizin verlangt nach ... more Zusammenfassung Die exponentielle Zunahme des Informationsflusses in der Medizin verlangt nach neuen Methoden zur Visualisierung patientenbezogener Informationen und Verbreitung von medizinischem Wissen in Diagnose und Therapie. Visualisierung in diesem Sinn beinhaltet die Darstellung medizinischer Bilddaten und bildgeführter stereotaktischer Navigation genauso wie den Rat eines Experten. Das Artma-Virtual-Patient-System ermöglicht einem sich in räumlicher Entfernung befindenden Experten Operationen via Internet mitzuverfolgen und mit Hilfe eines Remote-Computers die interoperative Visualisierung interaktiv zu modifizieren. Der Experte erhält die Planungsdaten nahezu in Echtzeit mittels TCP/IP von einem stereotaktischen Operationsvideoserver. Zusätzlich werden stereotaktische Navigationsdaten als Rigid-body-Koordinaten über das Netzwerk übertragen. Der Experte modifiziert die chirurgische Simulation am Remote-Computer, und der modifizierte Operationsplan wird in den Operationssaal zurückgeschickt. Durch die Telekonsultation können verschiedenartige Bilddaten und überlagerte Graphiken – Instrumente, Zielstrukturen, Landmarken, Konturen – in durch Internet verbundenen Kliniken dargestellt werden, wodurch interaktiv graphische Hilfe angeboten werden kann. Mit Hilfe dieser Bildfusionierungstechnologie werden das nicht vor Ort verfügbare Expertenwissen in virtuelle Datenstrukturen eingebunden und durch Überlagerung mit Livevideo Daten in Echtzeit während der Operation visualisiert.
Acta chirurgica Austriaca, Dec 1, 1995
Proceedings of SPIE, May 12, 1995
Interventional Video Tomography (IVT) is a new imaging modality for Image Directed Surgery to vis... more Interventional Video Tomography (IVT) is a new imaging modality for Image Directed Surgery to visualize in real-time intraoperatively the spatial position of surgical instruments relative to the patient's anatomy. The video imaging detector is based on a special camera equipped with an optical viewing and lighting system and electronic 3D sensors. When combined with an endoscope it is used for examining the inside of cavities or hollow organs of the body from many different angles. The surface topography of objects is reconstructed from a sequence of monocular video or endoscopic images. To increase accuracy and speed of the reconstruction the relative movement between objects and endoscope is continuously tracked by electronic sensors. The IVT image sequence represents a 4D data set in stereotactic space and contains image, surface topography and motion data. In ENT surgery an IVT image sequence of the planned and so far accessible surgical path is acquired prior to surgery. To simulate the surgical procedure the cross sectional imaging data is superimposed with the digitally stored IVT image sequence. During surgery the video sequence component of the IVT simulation is substituted by the live video source. The IVT technology makes obsolete the use of 3D digitizing probes for the patient image coordinate transformation. The image fusion of medical imaging data with live video sources is the first practical use of augmented reality in medicine. During surgery a head-up display is used to overlay real-time reformatted cross sectional imaging data with the live video image.
Journal of Oral and Maxillofacial Surgery, Mar 1, 2011
International Journal of Oral and Maxillofacial Surgery, Apr 1, 1996
Interventional video tomography (IVT), a new imaging modality, achieves virtual visualization of ... more Interventional video tomography (IVT), a new imaging modality, achieves virtual visualization of anatomic structures in three dimensions for intraoperative stereotactic navigation. Partial immersion into a virtual data space, which is orthotopically coregistered to the surgical field, enhances, by means of a see-through head-mounted display (HMD), the surgeon's visual perception and technique by providing visual access to nonvisual data of anatomy,
Implants and Oral Rehabilitation of the Atrophic Maxilla
The basic goal of Augmented Reality CAR)is to enhance the user's perception of the real world by ... more The basic goal of Augmented Reality CAR)is to enhance the user's perception of the real world by providing additional information which the user's senses cannot perceive under normal conditions. When applying AR to surgery planning and intraoperative 3D navigation, the aim is to provide the surgeon with 'x-ray vision' by merging virtual 3D objects generated from CT images (or other sources, like MR, nuclear medicine or ultrasound images) with his or her view of the patient.
Rather than replacing reality completely, as Virtual Reality (VR) technologies do, AR
supplements it. In VR environments, the user is cut off from any view of the real world that surrounds him or her. In contrast, AR allows the user to see the real world with superimposed virtual computer graphics or images.
This project focuses on the interface which combines views of the real and the virtual world and provides the surgeon with the superimposed augmented scene.
Applied sciences, Jul 17, 2020
Featured Application: Latest digital technology supported by anatomy and dental implantology is m... more Featured Application: Latest digital technology supported by anatomy and dental implantology is mandatory to accomplish safe and secure auricular osseointegrated implant treatment.
International Journal of Computer Assisted Radiology and Surgery, Jun 1, 2006
Proceedings of SPIE, Dec 27, 2000
ABSTRACT
Lecture Notes in Computer Science, 1998
We present the design and the results achieved in the development of a hybrid magneto-optic track... more We present the design and the results achieved in the development of a hybrid magneto-optic tracking system suitable for computer aided surgery. Our approach towards a reliable and accurate hybrid position sensor system that is not entirely dependent on an unobstructed line-of-sight between sensor assembly and patient is the combined use of an optical tracker with a direct current (DC) pulsed electromagnetic tracking system (EMTS). The proposed hybridization method aims at providing both accurate and uninterrupted position data by overcoming the drawbacks of both tracking technologies. Results presented include the preliminary assessment of algorithms for fusion of position data from both sensor systems, for calibrating the EMTS to the environment and for detecting systematic distortions in the DC tracking system caused by ferromagnetic materials in order to improve the reliability of the proposed system.
Journal of Oral and Maxillofacial Surgery, Dec 1, 1999
The objective of this study was to evaluate the clinical value and feasibility of surgical telena... more The objective of this study was to evaluate the clinical value and feasibility of surgical telenavigation and teleassistance technology in the field of craniomaxillofacial surgery. The technology is based on the principles of augmented reality environment technology and remote stereotactic visualization. A consultant surgeon in a remote location receives video, audio, and stereotactic navigation data from the operation site almost in real-time and, using a head-mounted display, is emerged in the surgical augmented reality environment. By telepresence or teleconsultation, the composite images and superimposed graphics (instruments, target structures, landmarks, contours) can be seen and discussed in connected clinics with the possibility of interactive manipulation and assistance. Interactive teleassistance was used in 27 cases of various types craniomaxillofacial surgery. The principles of computer-aided telenavigation were applied successfully. Technical problems in 6 cases did not cause a breakdown of overall system performance. Teleconsultation with remote experts is a useful tool, although some shortcomings exist. The financial and personal effort involved is considerable.
Biomedizinische Technik, 1998
Medical devices equipped with position sensors enable applications like image guided surgical int... more Medical devices equipped with position sensors enable applications like image guided surgical interventions 1 • 2 , rendering of 3D ultrasound Images 6 and virtual or augmented reality applications. In our experiments we have assessed the systematic distortions introduced by common surgical tools in direct current (DC) pulsed electromagnetic tracking Systems (EMTS). Our work aims at utilising the EMTS s an auxiliary sensor System that Supports a highly accurate optical tracking System (OTS) during periods of obstruction. A method for automated assessment of the accuracy of data from the EMTS has also been evaluated in laboratory experiments.
International Journal of Computer Assisted Radiology and Surgery, May 23, 2006
3D surface rendering and creating panoramic view for dental application Chanjira Sinthanayothin Æ... more 3D surface rendering and creating panoramic view for dental application Chanjira Sinthanayothin Æ Wichit Tharanon Advance Dental Technology Center (ADTEC), Pathumthani, Thailand
Journal of Oral and Maxillofacial Surgery, Mar 1, 2004
This long-term study gives a review over 7 years of research, development, and routine clinical a... more This long-term study gives a review over 7 years of research, development, and routine clinical application of computer-aided navigation technology in dental implantology. Benefits and disadvantages of up-to-date technologies are discussed. Materials and Methods: In the course of the current advancement, various hardware and software configurations are used. In the initial phase, universally applicable navigation software is adapted for implantology. Since 2001, a special software module for dental implantology is available. Preoperative planning is performed on the basis of prosthetic aspects and requirements. In clinical routine use, patient and drill positions are intraoperatively registered by means of optoelectronic tracking systems; during preclinical tests, electromagnetic trackers are also used. Results: In 7 years (1995 to 2002), 55 patients with 327 dental implants were successfully positioned with computer-aided navigation technology. The mean number of implants per patient was 6 (minimum, 1; maximum, 11). No complications were observed; the preoperative planning could be exactly realized. The average expenditure of time for the preparation of a surgical intervention with navigation decreased from 2 to 3 days in the initial phase to one-half day in clinical routine use with software that is optimized for dental implantology. Conclusions: The use of computer-aided navigation technology can contribute to considerable quality improvement. Preoperative planning is exactly realized and intraoperative safety is increased, because damage to nerves or neighboring teeth can be avoided.
Medical Image Computing and Computer-Assisted Intervention, Oct 11, 1998
We present the design and the results achieved in the development of a hybrid magneto-optic track... more We present the design and the results achieved in the development of a hybrid magneto-optic tracking system suitable for computer aided surgery. Our approach towards a reliable and accurate hybrid position sensor system that is not entirely dependent on an unobstructed line-of-sight between sensor assembly and patient is the combined use of an optical tracker with a direct current (DC) pulsed electromagnetic tracking system (EMTS). The proposed hybridization method aims at providing both accurate and uninterrupted position data by overcoming the drawbacks of both tracking technologies. Results presented include the preliminary assessment of algorithms for fusion of position data from both sensor systems, for calibrating the EMTS to the environment and for detecting systematic distortions in the DC tracking system caused by ferromagnetic materials in order to improve the reliability of the proposed system.
Lecture Notes in Computer Science, 1997
ABSTRACT In computer aided maxillofacial surgery we have shown the feasibility of computer naviga... more ABSTRACT In computer aided maxillofacial surgery we have shown the feasibility of computer navigation assistance for a wide variety of indications. Additional data of various imaging sources superimposed during operation with live video from the operating field provide help and useful information even for the experienced surgeon. Rather than the simple identification of target structures in a CT our goal is the intraoperative visualization of complex presurgical simulations of osteotomies of the midface. Because of the interdisciplinary nature the expert needed is not necessarily the surgeon. We present a system (Artma Virtual Patient) that enables a remote expert to observe the surgical procedure via the Internet and interactively modify the intraoperative visualization from his remote location. First results are presented and a live transmission of Stereotactic and video data is established to the conference site.
Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology, 2015
Auricular malformation treated by placement of an osseointegrated implant-supported epithesis usi... more Auricular malformation treated by placement of an osseointegrated implant-supported epithesis using telenavigation and model simulation: A
Mund-, Kiefer- und Gesichtschirurgie : MKG, May 1, 2000
Zusammenfassung Die exponentielle Zunahme des Informationsflusses in der Medizin verlangt nach ... more Zusammenfassung Die exponentielle Zunahme des Informationsflusses in der Medizin verlangt nach neuen Methoden zur Visualisierung patientenbezogener Informationen und Verbreitung von medizinischem Wissen in Diagnose und Therapie. Visualisierung in diesem Sinn beinhaltet die Darstellung medizinischer Bilddaten und bildgeführter stereotaktischer Navigation genauso wie den Rat eines Experten. Das Artma-Virtual-Patient-System ermöglicht einem sich in räumlicher Entfernung befindenden Experten Operationen via Internet mitzuverfolgen und mit Hilfe eines Remote-Computers die interoperative Visualisierung interaktiv zu modifizieren. Der Experte erhält die Planungsdaten nahezu in Echtzeit mittels TCP/IP von einem stereotaktischen Operationsvideoserver. Zusätzlich werden stereotaktische Navigationsdaten als Rigid-body-Koordinaten über das Netzwerk übertragen. Der Experte modifiziert die chirurgische Simulation am Remote-Computer, und der modifizierte Operationsplan wird in den Operationssaal zurückgeschickt. Durch die Telekonsultation können verschiedenartige Bilddaten und überlagerte Graphiken – Instrumente, Zielstrukturen, Landmarken, Konturen – in durch Internet verbundenen Kliniken dargestellt werden, wodurch interaktiv graphische Hilfe angeboten werden kann. Mit Hilfe dieser Bildfusionierungstechnologie werden das nicht vor Ort verfügbare Expertenwissen in virtuelle Datenstrukturen eingebunden und durch Überlagerung mit Livevideo Daten in Echtzeit während der Operation visualisiert.
Acta chirurgica Austriaca, Dec 1, 1995
Proceedings of SPIE, May 12, 1995
Interventional Video Tomography (IVT) is a new imaging modality for Image Directed Surgery to vis... more Interventional Video Tomography (IVT) is a new imaging modality for Image Directed Surgery to visualize in real-time intraoperatively the spatial position of surgical instruments relative to the patient's anatomy. The video imaging detector is based on a special camera equipped with an optical viewing and lighting system and electronic 3D sensors. When combined with an endoscope it is used for examining the inside of cavities or hollow organs of the body from many different angles. The surface topography of objects is reconstructed from a sequence of monocular video or endoscopic images. To increase accuracy and speed of the reconstruction the relative movement between objects and endoscope is continuously tracked by electronic sensors. The IVT image sequence represents a 4D data set in stereotactic space and contains image, surface topography and motion data. In ENT surgery an IVT image sequence of the planned and so far accessible surgical path is acquired prior to surgery. To simulate the surgical procedure the cross sectional imaging data is superimposed with the digitally stored IVT image sequence. During surgery the video sequence component of the IVT simulation is substituted by the live video source. The IVT technology makes obsolete the use of 3D digitizing probes for the patient image coordinate transformation. The image fusion of medical imaging data with live video sources is the first practical use of augmented reality in medicine. During surgery a head-up display is used to overlay real-time reformatted cross sectional imaging data with the live video image.
Journal of Oral and Maxillofacial Surgery, Mar 1, 2011
International Journal of Oral and Maxillofacial Surgery, Apr 1, 1996
Interventional video tomography (IVT), a new imaging modality, achieves virtual visualization of ... more Interventional video tomography (IVT), a new imaging modality, achieves virtual visualization of anatomic structures in three dimensions for intraoperative stereotactic navigation. Partial immersion into a virtual data space, which is orthotopically coregistered to the surgical field, enhances, by means of a see-through head-mounted display (HMD), the surgeon's visual perception and technique by providing visual access to nonvisual data of anatomy,
Implants and Oral Rehabilitation of the Atrophic Maxilla
The basic goal of Augmented Reality CAR)is to enhance the user's perception of the real world by ... more The basic goal of Augmented Reality CAR)is to enhance the user's perception of the real world by providing additional information which the user's senses cannot perceive under normal conditions. When applying AR to surgery planning and intraoperative 3D navigation, the aim is to provide the surgeon with 'x-ray vision' by merging virtual 3D objects generated from CT images (or other sources, like MR, nuclear medicine or ultrasound images) with his or her view of the patient.
Rather than replacing reality completely, as Virtual Reality (VR) technologies do, AR
supplements it. In VR environments, the user is cut off from any view of the real world that surrounds him or her. In contrast, AR allows the user to see the real world with superimposed virtual computer graphics or images.
This project focuses on the interface which combines views of the real and the virtual world and provides the surgeon with the superimposed augmented scene.