caa a22 4500 47584873X CHVBK 20180406123922.0 cr unu---uuuuu 170329e20001201xx s 000 0 eng 10.1007/s004050000284 doi (NATIONALLICENCE)springer-10.1007/s004050000284 Virtual endoscopy of the nasal cavity in comparison with fiberoptic endoscopy [Elektronische Daten] [Ping Han, Wolfgang Pirsig, Frank Ilgen, Johannes Görich, R. Sokiranski] Purpose: To apply virtual-endoscopic mode to display the nasal cavity and to evaluate clinical application of virtual endoscopy in comparison with nasal fiberoptic endoscopy. Materials and methods: Eleven patients were examined by virtual endoscopy after axial spiral computed tomography (CT) scanning was performed. In addition, 9 out of these 11 patients underwent fiberoptic endoscopy. Spiral CT scanning was performed with 1-mm collimation, 0.5- to 1-mm increment, 25-250 mA s, and pitch 1-2. Virtual endoscopy was performed by Explorer software package. Results: Virtual endoscopy could clearly demonstrate anatomic structures in the nasal cavity, septal deviation, stenosis and obstruction of the middle meatus, turbinate hyperplasia, and pathological masses larger than 3 mm in diameter. However, "false adhesions” may appear in virtual endoscopy. The main limitation of virtual endoscopy was the inability to evaluate mucosa and its surface. Conclusion: Virtual endoscopy of the nasal cavity is a new and noninvasive method. It can demonstrate normal and pathological structures in the nasal cavity. Its ability to visualize is comparable with fiberoptic endoscopy except for evaluating mucosal surface and secretions. In the future, this method will probably be a basic instrument of computer-assisted surgery in the midfacial region. Springer-Verlag Berlin Heidelberg, 2000 Keywords Low-dose spiral CT nationallicence Virtual endoscopy nationallicence Fiberoptic endoscopy nationallicence Nasal cavity nationallicence Han Ping Kreiskliniken Traunstein - Trostberg GmbH, Department of Radiology, University of Ulm, Cuno-Niggl-Str. 3, 83278 Traunstein, Germany e-mail: khts-sokiranski@kktstb.mhn.de, Tel.: +49-861-7051291, Telefax: +49-861-7051787, DE aut Pirsig Wolfgang Department of Otorhinolaryngology, University of Ulm, Traunstein, Germany, DE aut Ilgen Frank Department of Otorhinolaryngology, University of Ulm, Traunstein, Germany, DE aut Görich Johannes Kreiskliniken Traunstein - Trostberg GmbH, Department of Radiology, University of Ulm, Cuno-Niggl-Str. 3, 83278 Traunstein, Germany e-mail: khts-sokiranski@kktstb.mhn.de, Tel.: +49-861-7051291, Telefax: +49-861-7051787, DE aut Sokiranski R. Kreiskliniken Traunstein - Trostberg GmbH, Department of Radiology, University of Ulm, Cuno-Niggl-Str. 3, 83278 Traunstein, Germany e-mail: khts-sokiranski@kktstb.mhn.de, Tel.: +49-861-7051291, Telefax: +49-861-7051787, DE aut https://doi.org/10.1007/s004050000284 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s004050000284 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Han Ping Kreiskliniken Traunstein - Trostberg GmbH, Department of Radiology, University of Ulm, Cuno-Niggl-Str. 3, 83278 Traunstein, Germany e-mail: khts-sokiranski@kktstb.mhn.de, Tel.: +49-861-7051291, Telefax: +49-861-7051787, DE aut NATIONALLICENCE 700 1- Pirsig Wolfgang Department of Otorhinolaryngology, University of Ulm, Traunstein, Germany, DE aut NATIONALLICENCE 700 1- Ilgen Frank Department of Otorhinolaryngology, University of Ulm, Traunstein, Germany, DE aut NATIONALLICENCE 700 1- Görich Johannes Kreiskliniken Traunstein - Trostberg GmbH, Department of Radiology, University of Ulm, Cuno-Niggl-Str. 3, 83278 Traunstein, Germany e-mail: khts-sokiranski@kktstb.mhn.de, Tel.: +49-861-7051291, Telefax: +49-861-7051787, DE aut NATIONALLICENCE 700 1- Sokiranski R. Kreiskliniken Traunstein - Trostberg GmbH, Department of Radiology, University of Ulm, Cuno-Niggl-Str. 3, 83278 Traunstein, Germany e-mail: khts-sokiranski@kktstb.mhn.de, Tel.: +49-861-7051291, Telefax: +49-861-7051787, DE aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer