Medical Applications enabled by a motion-robust optical 3D sensor

S. Ettl*, S. Fouladi-Movahed**, S. Bauer***, O. Arold*, F. Willomitzer*, F. Huber*,S. Rampp**, H. Stefan**, J. Hornegger***/****, G. Hausler**Institute of Optics, Information and Photonics**Epilepsy Center, University Hospital of Neurology***Pattern Recognition Lab, Department of Computer Science****Erlangen Graduate School in Advanced Optical TechnologiesFriedrich-Alexander-University Erlangen-Nuremberg, Germanymailto:svenja.ettl@physik.uni-erlangen.deIn the medical field, the demand for motion-robust 3D data acquisition is steadilygrowing, e.g. for capturing limbs to construct prostheses. For this purpose, an op-tical 3D sensor is required which enables a flexible and comfortable 3D capturingof body parts. A “Flying Triangulation” sensor enables such tasks. Two exemplaryapplications, one in epilepsy surgery and one in radiation therapy, are presented.1 IntroductionIn the medical field, the demand for 3D data ac-quisition is steadily growing, e.g. for capturing limbsto construct prostheses. Often, the range of motionduring such an acquisition is restricted and the pa-tient might be bedridden and unable to be positionedin a certain way. For this purpose, an optical 3D sen-sor is required which enables a flexible and comfort-able 3D capturing of body parts.The measurement principle “Flying Triangulation” [1]enables such measurement tasks. The sensor,based on light sectioning, can be freely movedaround the object while capturing sparse 3D datawith each single shot. The data is aligned and dis-played in real time and after a few seconds a dense3D model of the object is generated. The sensor isscalable and hence enables the measurement of awide range of objects (see Fig. 1).