Real-time interactive virtual endoscopy of the tracheo–bronchial system: influence of CT imaging protocols and observer ability
| Autor: | Mathias Langer, M. P. Hauer, Dieter Burger, Almut Einert, Jan Thorsten Winterer, Martin Kimmig, Klaus Neumann, K.-H. Allmann |
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| Rok vydání: | 2000 |
| Předmět: |
Adult
Male medicine.medical_specialty Image quality Bronchi User-Computer Interface Bronchoscopy Computer Systems Image Processing Computer-Assisted medicine Fiber Optic Technology Humans False Positive Reactions Radiology Nuclear Medicine and imaging Virtual endoscopy Aged Aged 80 and over Observer Variation Anatomy Cross-Sectional medicine.diagnostic_test Bronchography business.industry Volume rendering General Medicine Observer (special relativity) Middle Aged Endoscopy Trachea Virtual image Female Radiology Artifacts Tomography X-Ray Computed business |
| Zdroj: | European Journal of Radiology. 33:50-54 |
| ISSN: | 0720-048X |
| DOI: | 10.1016/s0720-048x(99)00088-1 |
| Popis: | Objective : to evaluate the influence of different spiral CT examination protocols suitable for clinical use on image quality and to assess the observer dependence in interactive real-time virtual bronchoscopy. Methods and patients : real-time perspective volume rendering of the airways in twenty normal patients based on four different spiral CT examination protocols was evaluated by four observers in regard to the order of depictable bronchi. Results : best results were obtained using an examination protocol with a small beam collimation and a maximum pitch. Depending on the observer’s ability to control the fly path and the orientation of the bronchi with respect to the slice plane up to sixth order bronchi could be depicted. Inter-observer variability was up to two branching orders. Conclusion : The performance of virtual bronchoscopy strongly depends on the applied CT examination protocol and the observers experience with perspective volume rendering. Both of which have to be taken into account when virtual bronchoscopy is compared with fiberoptic bronchoscopy. |
| Databáze: | OpenAIRE |
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