Browsing by Subject "Medical imaging"

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  • Marhenke, Torben; Sanabria, Sergio J.; Chintada, Bhaskara Rao; Furrer, Roman; Neuenschwander, Jürg; Goksel, Orcun (Basel : MDPI AG, 2019)
    Medical ultrasonic arrays are typically characterized in controlled water baths using measurements by a hydrophone, which can be translated with a positioning stage. Characterization of 3D acoustic fields conventionally ...
  • Amanov, E.; Nguyen, T.-D.; Burgner-Kahrs, Jessica (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    Tubular continuum robots, which are composed of multiple concentric, precurved, elastic tubes, provide more dexterity than traditional surgical instruments at the same diameter. The tubes can be precurved such that the ...
  • Leuteritz, Georg; Lachmayer, Roland (Bellingham, WA : SPIE - International Society for Optical Engineering, 2018)
    Individually shaped light distributions become more and more important in lighting technologies and thus the importance of additively manufactured reflectors increases significantly. The vast field of applications ranges ...
  • Wirz, Raul; Lathrop, Ray A.; Godage, Isuru S.; Burgner-Kahrs, Jessica; Russell, Paul T.; Webster, Robert J. (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    Anecdotally, surgeons sometimes observe large errors when using image guidance in endonasal surgery. We hypothesize that one contributing factor is the possibility that operating room personnel might accidentally bump the ...
  • Gaa, Johannes; Kahrs, Lüder Alexander; Müller, Samuel; Majdani, Omid; Ortmaier, Tobias (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    Planning and analyzing of surgical interventions are often based on computer models derived from computed tomography images of the patient. In the field of cochlear implant insertion the modeling of several structures of ...
  • Schoob, Andreas; Lekon, Stefan; Kundrat, Dennis; Kahrs, Lüder Alexander; Mattos, Leonardo S.; Ortmaier, Tobias (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    Recent research has revealed that incision planning in laser surgery deploying stylus and tablet outperforms stateof-the-art micro-manipulator-based laser control. Providing more detailed quantitation regarding that approach, ...
  • Fellmann, Carolin; Kashi, Daryoush; Burgner-Kahrs, Jessica (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    For those minimally invasive surgery where conventional surgical instruments cannot reach the surgical site due to their straight structure and rigidity, concentric tube continuum robots are a promising technology because ...
  • Laves, Max-Heinrich; Schoob, Andreas; Kahrs, Lüder Alexander; Pfeiffer, Tom; Huber, Robert; Ortmaier, Tobias (Bellingham, WA : S P I E - International Society for Optical Engineering, 2017)
    A common representation of volumetric medical image data is the triplanar view (TV), in which the surgeon manually selects slices showing the anatomical structure of interest. In addition to common medical imaging such as ...
  • Dietz, Armin; Pösch, Andreas; Reithmeier, Eduard (Bellingham, WA : SPIE - International Society for Optical Engineering, 2018)
    The number of health-care associated infections is increasing worldwide. Hand hygiene has been identified as one of the most crucial measures to prevent bacteria from spreading. However, compliance with recommended procedures ...
  • Bergmeier, Jan; Kundrat, Dennis; Schoob, Andreas; Kahrs, Lüder Alexander; Ortmaier, Tobias (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    This work investigates combination of Optical Coherence Tomography and two cameras, observing a microscopic scene. Stereo vision provides realistic images, but is limited in terms of penetration depth. Optical Coherence ...
  • Vollmann, Benjamin; Müller, Samuel; Kundrat, Dennis; Ortmaier, Tobias; Kahrs, Lüder Alexander (Bellingham, WA : S P I E - International Society for Optical Engineering, 2015)
    This work proposes new methods for a microstereotactic frame based on bone cement fixation. Microstereotactic frames are under investigation for minimal invasive temporal bone surgery, e.g. cochlear implantation, or for ...
  • Bergmeier, Jan; Fast, Jacob Friedemann; Ortmaier, Tobias; Kahrs, Lüder Alexander (Bellingham, WA : S P I E - International Society for Optical Engineering, 2017)
    Image-to-physical registration based on volumetric data like computed tomography on the one side and intraoperative endoscopic images on the other side is an important method for various surgical applications. In this ...
  • Granna, Josephine; Rau, Thomas S.; Nguyen, Thien-Dang; Lenarz, Thomas; Majdani, Omid; Burgner-Kahrs, Jessica (Bellingham, WA : S P I E - International Society for Optical Engineering, 2016)
    During manual cochlear implant electrode insertion the surgeon is at risk to damage the intracochlear fine-structure, as the electrode array is inserted through a small opening in the cochlea blindly with little force-feedback. ...
  • Rahlves, M.; Varkentin, A.; Stritzel, J.; Blumenröther, E.; Mazurenka, M.; Wollweber, M.; Roth, B. (Bellingham, WA : S P I E - International Society for Optical Engineering, 2016)
    Melanoma skin cancer has one of the highest mortality rates of all types of cancer if not detected at an early stage. The survival rate is highly dependent on its penetration depth, which is commonly determined by ...