Barbara Carl1,2, Miriam Bopp3,4, Benjamin Saß3,4, Christopher Nimsky3,4. 1. Department of Neurosurgery, University Marburg, Baldingerstrasse, 35033, Marburg, Germany. carlb@med.uni-marburg.de. 2. Marburg Center for Mind, Brain and Behavior (MCMBB), Marburg, Germany. carlb@med.uni-marburg.de. 3. Department of Neurosurgery, University Marburg, Baldingerstrasse, 35033, Marburg, Germany. 4. Marburg Center for Mind, Brain and Behavior (MCMBB), Marburg, Germany.
Abstract
BACKGROUND: Registration accuracy is a main factor influencing overall navigation accuracy. Standard fiducial- or landmark-based patient registration is user dependent and error-prone. Intraoperative imaging offers the possibility for user-independent patient registration. The aim of this paper is to evaluate our initial experience applying intraoperative computed tomography (CT) for navigation registration in cranial neurosurgery, with a special focus on registration accuracy and effective radiation dose. METHODS: A total of 200 patients (141 craniotomy, 19 transsphenoidal, and 40 stereotactic burr hole procedures) were investigated by intraoperative CT applying a 32-slice movable CT scanner, which was used for automatic navigation registration. Registration accuracy was measured by at least three skin fiducials that were not part of the registration process. RESULTS: Automatic registration resulted in high registration accuracy (mean registration error: 0.93 ± 0.41 mm). Implementation of low-dose scanning protocols did not impede registration accuracy (registration error applying the full dose head protocol: 0.87 ± 0.36 mm vs. the low dose sinus protocol 0.72 ± 0.43 mm) while a reduction of the effective radiation dose by a factor of 8 could be achieved (mean effective radiation dose head protocol: 2.73 mSv vs. sinus protocol: 0.34 mSv). CONCLUSION: Intraoperative CT allows highly reliable navigation registration with low radiation exposure.
BACKGROUND: Registration accuracy is a main factor influencing overall navigation accuracy. Standard fiducial- or landmark-based patient registration is user dependent and error-prone. Intraoperative imaging offers the possibility for user-independent patient registration. The aim of this paper is to evaluate our initial experience applying intraoperative computed tomography (CT) for navigation registration in cranial neurosurgery, with a special focus on registration accuracy and effective radiation dose. METHODS: A total of 200 patients (141 craniotomy, 19 transsphenoidal, and 40 stereotactic burr hole procedures) were investigated by intraoperative CT applying a 32-slice movable CT scanner, which was used for automatic navigation registration. Registration accuracy was measured by at least three skin fiducials that were not part of the registration process. RESULTS: Automatic registration resulted in high registration accuracy (mean registration error: 0.93 ± 0.41 mm). Implementation of low-dose scanning protocols did not impede registration accuracy (registration error applying the full dose head protocol: 0.87 ± 0.36 mm vs. the low dose sinus protocol 0.72 ± 0.43 mm) while a reduction of the effective radiation dose by a factor of 8 could be achieved (mean effective radiation dose head protocol: 2.73 mSv vs. sinus protocol: 0.34 mSv). CONCLUSION: Intraoperative CT allows highly reliable navigation registration with low radiation exposure.
Authors: Benjamin Saß; Darko Zivkovic; Mirza Pojskic; Christopher Nimsky; Miriam H A Bopp Journal: Front Neurosci Date: 2022-05-09 Impact factor: 5.152
Authors: Benjamin Saß; Mirza Pojskic; Darko Zivkovic; Barbara Carl; Christopher Nimsky; Miriam H A Bopp Journal: Front Oncol Date: 2021-08-18 Impact factor: 6.244
Authors: Miriam H A Bopp; Benjamin Saß; Mirza Pojskić; Felix Corr; Dustin Grimm; André Kemmling; Christopher Nimsky Journal: J Clin Med Date: 2022-09-23 Impact factor: 4.964
Authors: R Schreurs; F Baan; C Klop; L Dubois; L F M Beenen; P E M H Habets; A G Becking; T J J Maal Journal: Sci Rep Date: 2021-09-10 Impact factor: 4.379