Auflistung nach Schlagwort "Medical imaging"

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  • Acoustic field characterization of medical array transducers based on unfocused transmits and single-plane hydrophone measurements 
    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 ...
  • Additive manufacturing of patient-specific tubular continuum manipulators 
    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 ...
  • Additive manufacturing of reflective optics: Evaluating finishing methods 
    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 ...
  • Can coffee improve image guidance? 
    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 ...
  • Cochlear shape description and analyzing via medial models 
    Gaa, Johannes; Kahrs, Lüder Alexander; Müller, Samuel; Majdani, Omid; Ortmaier, Tobias (Bellingham, Wash. : SPIE, 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 ...
  • Comparison of tablet-based strategies for incision planning in laser microsurgery 
    Schoob, Andreas; Lekon, Stefan; Kundrat, Dennis; Kahrs, Lüder Alexander; Mattos, Leonardo S.; Ortmaier, Tobias (Bellingham, Wash. : SPIE, 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, ...
  • Evaluation of input devices for teleoperation of concentric tube continuum robots for surgical tasks 
    Fellmann, Carolin; Kashi, Daryoush; Burgner-Kahrs, Jessica (Bellingham, Wash. : SPIE, 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 ...
  • Feature tracking for automated volume of interest stabilization on 4D-OCT images 
    Laves, Max-Heinrich; Schoob, Andreas; Kahrs, Lüder Alexander; Pfeiffer, Tom; Huber, Robert; Ortmaier, Tobias (Bellingham, Wash. : SPIE, 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 ...
  • Hand hygiene monitoring based on segmentation of interacting hands with convolutional networks 
    Dietz, Armin; Pösch, Andreas; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 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 ...
  • Methods for a fusion of Optical Coherence Tomography and stereo camera image data 
    Bergmeier, Jan; Kundrat, Dennis; Schoob, Andreas; Kahrs, Lüder Alexander; Ortmaier, Tobias (Bellingham, Wash. : SPIE, 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 ...
  • Methods for intraoperative, sterile pose-setting of patient-specific microstereotactic frames 
    Vollmann, Benjamin; Müller, Samuel; Kundrat, Dennis; Ortmaier, Tobias; Kahrs, Lüder Alexander (Bellingham, Wash. : SPIE, 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 ...
  • Panorama imaging for image-to-physical registration of narrow drill holes inside spongy bones 
    Bergmeier, Jan; Fast, Jacob Friedemann; Ortmaier, Tobias; Kahrs, Lüder Alexander (Bellingham, Wash. : SPIE, 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 ...
  • Toward automated cochlear implant insertion using tubular manipulators 
    Granna, Josephine; Rau, Thomas S.; Nguyen, Thien-Dang; Lenarz, Thomas; Majdani, Omid; Burgner-Kahrs, Jessica (Bellingham, Wash. : SPIE, 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. ...
  • Towards multimodal detection of melanoma thickness based on optical coherence tomography and optoacoustics 
    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 ...