Methods to determine the scaling factor in X-ray images for exact preoperative planning in hip surgery
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Oliver Gieseler
Oliver Gieseler is scientific assistant at Center for Sensor Systems (ZESS) working in the field of optical 3D-localization in computer assisted surgery.
Zentrum für Sensorsysteme, Universität Siegen, Paul-Bonatz-Str. 9–11, 57076 Siegen, Germany
,
Hubert Roth
Prof. Dr.-Ing. Hubert Roth is director of the institute for control engineering at University of Siegen and board member of Center for Sensor Systems.
Institut für Regelungs- und Steuerungstechnik, Universität Siegen, Hölderlinstr. 3, 57076 Siegen, Germany
Dr.-Ing. Jürgen Wahrburg is Akad. Director at the institute of conrol engineering and leads a research group for development of computer and robotic assisted systems for surgical applications.
Zentrum für Sensorsysteme, Universität Siegen, Paul-Bonatz-Str. 9–11, 57076 Siegen, Germany
Abstract
This article presents common methods for calculating the scaling factor in X-ray images and reveals their basic technical difficulties, accuracy and error sources. Further, the causes for magnification of patient anatomy in X-ray images are described. Preoperative planning by means of X-ray images, its difficulties, reliability and limitations are also illustrated. Additionally, a new approach is introduced which is based on a stereo camera system used to identify the magnification especially in anterior-posterior pelvis images for hip application, considering the geometry of X-ray apparatus while minimizing errors by foreclosing the well-known central issues of all the conventional methods for the most part.
Zusammenfassung
Dieser Artikel beschreibt herkömmliche Verfahren zur Skalierung von Röntgenbildern, sowie deren grundsätzliche technische Probleme, Genauigkeit und Fehlerquellen. Weiterhin werden die Gründe für die Vergrößerung von Patientenanatomie auf Röntgenbildern beschrieben. Ebenfalls werden die präoperative Planung anhand von Röntgenbildern, ihre Schwierigkeiten, Zuverlässigkeit und Grenzen dargestellt. Zusätzlich wird ein neuer Ansatz vorgestellt, mit dem unter Verwendung eines Stereokamerasystems der Vergrößerungsfaktor von Röntgenbildern, speziell in anterior-posterioren Beckenübersichtsaufnahmen für Hüftanwendungen, mit Hilfe der Geometrie der Röntgengeräte ermittelt werden kann. Hierbei werden Fehler und bekannte Kernprobleme der konventionellen Methoden größtenteils ausgeschlossen und umgangen.
About the authors
Oliver Gieseler is scientific assistant at Center for Sensor Systems (ZESS) working in the field of optical 3D-localization in computer assisted surgery.
Zentrum für Sensorsysteme, Universität Siegen, Paul-Bonatz-Str. 9–11, 57076 Siegen, Germany
Prof. Dr.-Ing. Hubert Roth is director of the institute for control engineering at University of Siegen and board member of Center for Sensor Systems.
Institut für Regelungs- und Steuerungstechnik, Universität Siegen, Hölderlinstr. 3, 57076 Siegen, Germany
Dr.-Ing. Jürgen Wahrburg is Akad. Director at the institute of conrol engineering and leads a research group for development of computer and robotic assisted systems for surgical applications.
Zentrum für Sensorsysteme, Universität Siegen, Paul-Bonatz-Str. 9–11, 57076 Siegen, Germany
Acknowledgement
Part of this work is carried within the framework of the ZIM project KF2383704KJ4 funded by the German Federal Ministry BMWi.
©2016 Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Frontmatter
- Editorial
- IEEE Workshop on Industrial and Medical Measurement and Sensor Technology – SENSORICA 2016
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- A metamaterial based dual-resonant coil element for combined sodium/hydrogen MRI at 7 Tesla
- Emission spectroscopy based sensor developed for engine testing
- Molecular laser-induced breakdown spectroscopy for elemental analysis
- Quantitative measurement of complex substances dissolved in an ionic liquid using IR spectroscopy and chemometrics
- Methods to determine the scaling factor in X-ray images for exact preoperative planning in hip surgery
- Development of an optical tracking system for a novel flexible and soft manipulator with controllable stiffness for minimal invasive surgery (MIS)
- Telemetric multi-sensor system for medical applications – The approach
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Articles in the same Issue
- Frontmatter
- Editorial
- IEEE Workshop on Industrial and Medical Measurement and Sensor Technology – SENSORICA 2016
- Beiträge
- A metamaterial based dual-resonant coil element for combined sodium/hydrogen MRI at 7 Tesla
- Emission spectroscopy based sensor developed for engine testing
- Molecular laser-induced breakdown spectroscopy for elemental analysis
- Quantitative measurement of complex substances dissolved in an ionic liquid using IR spectroscopy and chemometrics
- Methods to determine the scaling factor in X-ray images for exact preoperative planning in hip surgery
- Development of an optical tracking system for a novel flexible and soft manipulator with controllable stiffness for minimal invasive surgery (MIS)
- Telemetric multi-sensor system for medical applications – The approach
- Measurement and analysis of wavefront structures of diode lasers
