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

In the medical field, the demand for motion-robust, 3D data acquisition is steadily growing, e.g. for capturing limbs to construct prostheses. For this purpose, an optical 3D sensor is required which enables a flexible and comfortable 3D capturing of body parts. The measurement principle "Flying Triangulation" (S. Ettl et al., Appl Opt 51 (2012) 281-289) enables such measurement tasks. The sensor, based on light sectioning, can be freely moved around the object while capturing sparse 3D data with each single shot. The data is aligned and displayed in real time and after a few seconds a dense 3D model of the object is generated. As representative medical applications, we show two examples: an application in epilepsy surgery and patient positioning in radiation therapy. In epilepsy surgery, the goal is to locate and remove brain regions responsible for epilepsy by combining functional and anatomic data. The co-registration of the two data is performed employing Flying Triangulation. In radiation therapy, the patient position must be known for accurate dose delivery. It is captured employing Flying Triangulation. We present measurement results and discuss further fields of applications.