The Experts below are selected from a list of 5235 Experts worldwide ranked by ideXlab platform
Edward F Joganic - One of the best experts on this subject based on the ideXlab platform.
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Preserving olfactory function in anterior Craniofacial Surgery through cribriform plate osteotomy applied in selected patients.
Neurosurgery, 2005Co-Authors: Iman Feiz-erfan, Patrick P Han, Robert F Spetzler, Eric M Horn, Jeffrey D Klopfenstein, Louis J Kim, Randall W Porter, Stephen P Beals, Salvatore C Lettieri, Edward F JoganicAbstract:OBJECTIVE: Olfaction is often sacrificed to gain access to the cranial base in anterior Craniofacial Surgery. We describe the long-term results of olfactory function in patients who underwent anterior Craniofacial Surgery and a cribriform plate osteotomy to preserve olfaction. METHODS: Between 1992 and 2004, 28 patients underwent 29 cribriform plate osteotomies in an attempt to preserve olfaction during anterior Craniofacial Surgery performed through modified extended transbasal approaches. Patients' charts and office notes were reviewed retrospectively. Formal olfactory testing was available in 5 patients, but most data were based on patients' subjective reports of olfaction. Olfactory preservation was defined by the subjective ability to detect fumes such as coffee, chocolate, roses, and orange juice regardless of the intensity of the sensation. Follow-up was based on phone calls to patients. RESULTS: Four patients were lost to follow-up and excluded. Therefore, follow-up was available in 24 patients after 25 procedures. On the basis of patients' subjective reports, olfaction was spared in 22 patients after 23 procedures (92%) and was confirmed objectively in the five patients formally tested. After Surgery, only two patients were anosmic. CONCLUSION: Olfaction can be preserved in selected patients undergoing anterior Craniofacial Surgery. At least 1 cm of nasal mucosa should remain attached to the cribriform plate, which can be achieved by including the nasal bone in the osteotomy of the orbital bar. A medial orbital canthopexy is therefore necessary after these procedures.
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Preserving olfactory function in anterior Craniofacial Surgery through cribriform plate osteotomy applied in selected patients.
Neurosurgery, 2005Co-Authors: Iman Feiz-erfan, Patrick P Han, Robert F Spetzler, Eric M Horn, Jeffrey D Klopfenstein, Louis J Kim, Randall W Porter, Stephen P Beals, Salvatore C Lettieri, Edward F JoganicAbstract:Olfaction is often sacrificed to gain access to the cranial base in anterior Craniofacial Surgery. We describe the long-term results of olfactory function in patients who underwent anterior Craniofacial Surgery and a cribriform plate osteotomy to preserve olfaction. Between 1992 and 2004, 28 patients underwent 29 cribriform plate osteotomies in an attempt to preserve olfaction during anterior Craniofacial Surgery performed through modified extended transbasal approaches. Patients' charts and office notes were reviewed retrospectively. Formal olfactory testing was available in 5 patients, but most data were based on patients' subjective reports of olfaction. Olfactory preservation was defined by the subjective ability to detect fumes such as coffee, chocolate, roses, and orange juice regardless of the intensity of the sensation. Follow-up was based on phone calls to patients. Four patients were lost to follow-up and excluded. Therefore, follow-up was available in 24 patients after 25 procedures. On the basis of patients' subjective reports, olfaction was spared in 22 patients after 23 procedures (92%) and was confirmed objectively in the five patients formally tested. After Surgery, only two patients were anosmic. Olfaction can be preserved in selected patients undergoing anterior Craniofacial Surgery. At least 1 cm of nasal mucosa should remain attached to the cribriform plate, which can be achieved by including the nasal bone in the osteotomy of the orbital bar. A medial orbital canthopexy is therefore necessary after these procedures.
Bernd Girod - One of the best experts on this subject based on the ideXlab platform.
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Computer-aided 3-D simulation and prediction of Craniofacial Surgery: a new approach.
Journal of Cranio-Maxillofacial Surgery, 2001Co-Authors: Sabine Girod, Matthias Teschner, Uwe M. H. Schrell, Beate Kevekordes, Bernd GirodAbstract:Background: In plastic and reconstructive Craniofacial Surgery, careful preoperative planning is essential. In complex cases of Craniofacial synostosis, rapid prototyping models are used to simulate the Surgery and reduce operating time. Recently, 3-D CT model Surgery has been introduced for presurgical planning and prediction of the postoperative result. Objective: For simulation of Craniofacial Surgery a computer-based system was developed that allows visualization and manipulation of CT-data using computer graphics techniques. Surgical procedures in all areas of the bony skull can be performed interactively. Results: The case of a child with scaphocephalus is presented. Surgery is planned using the Craniofacial Surgery simulator described above. Conclusion: The computer-based interactive Surgery simulation systems presented here allow precise visualization of Craniofacial Surgery. The accurate computer-aided 3-D simulation of bone displacements is also the prerequisite for transfer of the simulated Surgery using a navigation system for Surgery. Thus the preoperatively planned procedure could be transferred directly to the operating table.
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MICCAI - Optimization Approaches for Soft-Tissue Prediction in Craniofacial Surgery Simulation
Medical Image Computing and Computer-Assisted Intervention – MICCAI’99, 1999Co-Authors: Matthias Teschner, Sabine Girod, Bernd GirodAbstract:A system for interactive, 3-D, Craniofacial Surgery simulation is presented. It is used for the 3-D simulation of osteotomies of the facial and skull bones and for the prediction of soft-tissue changes caused by bone movement. The result of the simulation process is a 3-D, photorealistic model of the patient’s postoperative appearance that can be viewed from any position.
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Deformable modeling of facial tissue for Craniofacial Surgery simulation.
Computer aided surgery : official journal of the International Society for Computer Aided Surgery, 1998Co-Authors: Erwin Keeve, Sabine Girod, Ron Kikinis, Bernd GirodAbstract:While deformable object modeling has been studied by computer graphics specialists for more than two decades, on ly a few applications in the field of surgical simulation have been developed which provide both real-time and physically realistic modeling of complex, nonlinear tissue deformations. Particularly in Craniofacial Surgery, the prediction of soft-tissue changes—which result from alterations in the underlying bone structure—is critical to the surgical outcome. The prediction of these tissue changes and, therefore, the prognosis of the postoperative appearance of the patient, is still based on empirical studies of the relationship between bone and tissue movements: There exists no physical model which takes into account the individual patient anatomy to simulate the resulting tissue changes during Craniofacial Surgery. in this article we present two different deformable tissue models which are integrated in an interactive surgical simulation testbed. Both techniques allow precise preoperative simul...
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VBC - Craniofacial Surgery Simulation
Lecture Notes in Computer Science, 1996Co-Authors: Erwin Keeve, Sabine Girod, Bernd GirodAbstract:Craniofacial Surgery requires careful preoperative planning in order to restore functionality and to improve the patient's aesthetics. In this article we present two different tissue models, integrated in an interactive surgical simulation system, which allow the preoperative visualization of the patient's postoperative appearance. We combine a reconstruction of the patient's skull from computer tomography with a laser scan of the skin, and bring them together into the system. The surgical procedure is simulated and its impact on the skin is calculated with either a MASS SPRING or a FINITE ELEMENT tissue model.
Iman Feiz-erfan - One of the best experts on this subject based on the ideXlab platform.
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Preserving olfactory function in anterior Craniofacial Surgery through cribriform plate osteotomy applied in selected patients.
Neurosurgery, 2005Co-Authors: Iman Feiz-erfan, Patrick P Han, Robert F Spetzler, Eric M Horn, Jeffrey D Klopfenstein, Louis J Kim, Randall W Porter, Stephen P Beals, Salvatore C Lettieri, Edward F JoganicAbstract:OBJECTIVE: Olfaction is often sacrificed to gain access to the cranial base in anterior Craniofacial Surgery. We describe the long-term results of olfactory function in patients who underwent anterior Craniofacial Surgery and a cribriform plate osteotomy to preserve olfaction. METHODS: Between 1992 and 2004, 28 patients underwent 29 cribriform plate osteotomies in an attempt to preserve olfaction during anterior Craniofacial Surgery performed through modified extended transbasal approaches. Patients' charts and office notes were reviewed retrospectively. Formal olfactory testing was available in 5 patients, but most data were based on patients' subjective reports of olfaction. Olfactory preservation was defined by the subjective ability to detect fumes such as coffee, chocolate, roses, and orange juice regardless of the intensity of the sensation. Follow-up was based on phone calls to patients. RESULTS: Four patients were lost to follow-up and excluded. Therefore, follow-up was available in 24 patients after 25 procedures. On the basis of patients' subjective reports, olfaction was spared in 22 patients after 23 procedures (92%) and was confirmed objectively in the five patients formally tested. After Surgery, only two patients were anosmic. CONCLUSION: Olfaction can be preserved in selected patients undergoing anterior Craniofacial Surgery. At least 1 cm of nasal mucosa should remain attached to the cribriform plate, which can be achieved by including the nasal bone in the osteotomy of the orbital bar. A medial orbital canthopexy is therefore necessary after these procedures.
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Preserving olfactory function in anterior Craniofacial Surgery through cribriform plate osteotomy applied in selected patients.
Neurosurgery, 2005Co-Authors: Iman Feiz-erfan, Patrick P Han, Robert F Spetzler, Eric M Horn, Jeffrey D Klopfenstein, Louis J Kim, Randall W Porter, Stephen P Beals, Salvatore C Lettieri, Edward F JoganicAbstract:Olfaction is often sacrificed to gain access to the cranial base in anterior Craniofacial Surgery. We describe the long-term results of olfactory function in patients who underwent anterior Craniofacial Surgery and a cribriform plate osteotomy to preserve olfaction. Between 1992 and 2004, 28 patients underwent 29 cribriform plate osteotomies in an attempt to preserve olfaction during anterior Craniofacial Surgery performed through modified extended transbasal approaches. Patients' charts and office notes were reviewed retrospectively. Formal olfactory testing was available in 5 patients, but most data were based on patients' subjective reports of olfaction. Olfactory preservation was defined by the subjective ability to detect fumes such as coffee, chocolate, roses, and orange juice regardless of the intensity of the sensation. Follow-up was based on phone calls to patients. Four patients were lost to follow-up and excluded. Therefore, follow-up was available in 24 patients after 25 procedures. On the basis of patients' subjective reports, olfaction was spared in 22 patients after 23 procedures (92%) and was confirmed objectively in the five patients formally tested. After Surgery, only two patients were anosmic. Olfaction can be preserved in selected patients undergoing anterior Craniofacial Surgery. At least 1 cm of nasal mucosa should remain attached to the cribriform plate, which can be achieved by including the nasal bone in the osteotomy of the orbital bar. A medial orbital canthopexy is therefore necessary after these procedures.
Sabine Girod - One of the best experts on this subject based on the ideXlab platform.
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Computer-aided 3-D simulation and prediction of Craniofacial Surgery: a new approach.
Journal of Cranio-Maxillofacial Surgery, 2001Co-Authors: Sabine Girod, Matthias Teschner, Uwe M. H. Schrell, Beate Kevekordes, Bernd GirodAbstract:Background: In plastic and reconstructive Craniofacial Surgery, careful preoperative planning is essential. In complex cases of Craniofacial synostosis, rapid prototyping models are used to simulate the Surgery and reduce operating time. Recently, 3-D CT model Surgery has been introduced for presurgical planning and prediction of the postoperative result. Objective: For simulation of Craniofacial Surgery a computer-based system was developed that allows visualization and manipulation of CT-data using computer graphics techniques. Surgical procedures in all areas of the bony skull can be performed interactively. Results: The case of a child with scaphocephalus is presented. Surgery is planned using the Craniofacial Surgery simulator described above. Conclusion: The computer-based interactive Surgery simulation systems presented here allow precise visualization of Craniofacial Surgery. The accurate computer-aided 3-D simulation of bone displacements is also the prerequisite for transfer of the simulated Surgery using a navigation system for Surgery. Thus the preoperatively planned procedure could be transferred directly to the operating table.
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MICCAI - Optimization Approaches for Soft-Tissue Prediction in Craniofacial Surgery Simulation
Medical Image Computing and Computer-Assisted Intervention – MICCAI’99, 1999Co-Authors: Matthias Teschner, Sabine Girod, Bernd GirodAbstract:A system for interactive, 3-D, Craniofacial Surgery simulation is presented. It is used for the 3-D simulation of osteotomies of the facial and skull bones and for the prediction of soft-tissue changes caused by bone movement. The result of the simulation process is a 3-D, photorealistic model of the patient’s postoperative appearance that can be viewed from any position.
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Deformable modeling of facial tissue for Craniofacial Surgery simulation.
Computer aided surgery : official journal of the International Society for Computer Aided Surgery, 1998Co-Authors: Erwin Keeve, Sabine Girod, Ron Kikinis, Bernd GirodAbstract:While deformable object modeling has been studied by computer graphics specialists for more than two decades, on ly a few applications in the field of surgical simulation have been developed which provide both real-time and physically realistic modeling of complex, nonlinear tissue deformations. Particularly in Craniofacial Surgery, the prediction of soft-tissue changes—which result from alterations in the underlying bone structure—is critical to the surgical outcome. The prediction of these tissue changes and, therefore, the prognosis of the postoperative appearance of the patient, is still based on empirical studies of the relationship between bone and tissue movements: There exists no physical model which takes into account the individual patient anatomy to simulate the resulting tissue changes during Craniofacial Surgery. in this article we present two different deformable tissue models which are integrated in an interactive surgical simulation testbed. Both techniques allow precise preoperative simul...
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VBC - Craniofacial Surgery Simulation
Lecture Notes in Computer Science, 1996Co-Authors: Erwin Keeve, Sabine Girod, Bernd GirodAbstract:Craniofacial Surgery requires careful preoperative planning in order to restore functionality and to improve the patient's aesthetics. In this article we present two different tissue models, integrated in an interactive surgical simulation system, which allow the preoperative visualization of the patient's postoperative appearance. We combine a reconstruction of the patient's skull from computer tomography with a laser scan of the skin, and bring them together into the system. The surgical procedure is simulated and its impact on the skin is calculated with either a MASS SPRING or a FINITE ELEMENT tissue model.
Jeffrey D Klopfenstein - One of the best experts on this subject based on the ideXlab platform.
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Preserving olfactory function in anterior Craniofacial Surgery through cribriform plate osteotomy applied in selected patients.
Neurosurgery, 2005Co-Authors: Iman Feiz-erfan, Patrick P Han, Robert F Spetzler, Eric M Horn, Jeffrey D Klopfenstein, Louis J Kim, Randall W Porter, Stephen P Beals, Salvatore C Lettieri, Edward F JoganicAbstract:OBJECTIVE: Olfaction is often sacrificed to gain access to the cranial base in anterior Craniofacial Surgery. We describe the long-term results of olfactory function in patients who underwent anterior Craniofacial Surgery and a cribriform plate osteotomy to preserve olfaction. METHODS: Between 1992 and 2004, 28 patients underwent 29 cribriform plate osteotomies in an attempt to preserve olfaction during anterior Craniofacial Surgery performed through modified extended transbasal approaches. Patients' charts and office notes were reviewed retrospectively. Formal olfactory testing was available in 5 patients, but most data were based on patients' subjective reports of olfaction. Olfactory preservation was defined by the subjective ability to detect fumes such as coffee, chocolate, roses, and orange juice regardless of the intensity of the sensation. Follow-up was based on phone calls to patients. RESULTS: Four patients were lost to follow-up and excluded. Therefore, follow-up was available in 24 patients after 25 procedures. On the basis of patients' subjective reports, olfaction was spared in 22 patients after 23 procedures (92%) and was confirmed objectively in the five patients formally tested. After Surgery, only two patients were anosmic. CONCLUSION: Olfaction can be preserved in selected patients undergoing anterior Craniofacial Surgery. At least 1 cm of nasal mucosa should remain attached to the cribriform plate, which can be achieved by including the nasal bone in the osteotomy of the orbital bar. A medial orbital canthopexy is therefore necessary after these procedures.
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Preserving olfactory function in anterior Craniofacial Surgery through cribriform plate osteotomy applied in selected patients.
Neurosurgery, 2005Co-Authors: Iman Feiz-erfan, Patrick P Han, Robert F Spetzler, Eric M Horn, Jeffrey D Klopfenstein, Louis J Kim, Randall W Porter, Stephen P Beals, Salvatore C Lettieri, Edward F JoganicAbstract:Olfaction is often sacrificed to gain access to the cranial base in anterior Craniofacial Surgery. We describe the long-term results of olfactory function in patients who underwent anterior Craniofacial Surgery and a cribriform plate osteotomy to preserve olfaction. Between 1992 and 2004, 28 patients underwent 29 cribriform plate osteotomies in an attempt to preserve olfaction during anterior Craniofacial Surgery performed through modified extended transbasal approaches. Patients' charts and office notes were reviewed retrospectively. Formal olfactory testing was available in 5 patients, but most data were based on patients' subjective reports of olfaction. Olfactory preservation was defined by the subjective ability to detect fumes such as coffee, chocolate, roses, and orange juice regardless of the intensity of the sensation. Follow-up was based on phone calls to patients. Four patients were lost to follow-up and excluded. Therefore, follow-up was available in 24 patients after 25 procedures. On the basis of patients' subjective reports, olfaction was spared in 22 patients after 23 procedures (92%) and was confirmed objectively in the five patients formally tested. After Surgery, only two patients were anosmic. Olfaction can be preserved in selected patients undergoing anterior Craniofacial Surgery. At least 1 cm of nasal mucosa should remain attached to the cribriform plate, which can be achieved by including the nasal bone in the osteotomy of the orbital bar. A medial orbital canthopexy is therefore necessary after these procedures.