naa a22 4500 510808042 CHVBK 20180411083427.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11548-013-0828-4 doi (NATIONALLICENCE)springer-10.1007/s11548-013-0828-4 Mobile augmented reality for computer-assisted percutaneous nephrolithotomy [Elektronische Daten] [Michael Müller, Marie-Claire Rassweiler, Jan Klein, Alexander Seitel, Matthias Gondan, Matthias Baumhauer, Dogu Teber, Jens Rassweiler, Hans-Peter Meinzer, Lena Maier-Hein] Purpose: Percutaneous nephrolithotomy (PCNL) plays an integral role in treatment of renal stones. Creating percutaneous renal access is the most important and challenging step in the procedure. To facilitate this step, we evaluated our novel mobile augmented reality (AR) system for its feasibility of use for PCNL. Methods: A tablet computer, such as an iPad $$^{\circledR }$$ , is positioned above the patient with its camera pointing toward the field of intervention. The images of the tablet camera are registered with the CT image by means of fiducial markers. Structures of interest can be superimposed semi-transparently on the video images. We present a systematic evaluation by means of a phantom study. An urological trainee and two experts conducted 53 punctures on kidney phantoms. Results: The trainee performed best with the proposed AR system in terms of puncturing time (mean: 99s), whereas the experts performed best with fluoroscopy (mean: 59s). iPad assistance lowered radiation exposure by a factor of 3 for the inexperienced physician and by a factor of 1.8 for the experts in comparison with fluoroscopy usage. We achieve a mean visualization accuracy of 2.5mm. Conclusions: The proposed tablet computer-based AR system has proven helpful in assisting percutaneous interventions such as PCNL and shows benefits compared to other state-of-the-art assistance systems. A drawback of the system in its current state is the lack of depth information. Despite that, the simple integration into the clinical workflow highlights the potential impact of this approach to such interventions. CARS, 2013 Augmented reality nationallicence Mobile nationallicence Image-guided surgery nationallicence Computer vision nationallicence CT nationallicence Müller Michael Department of Medical and Biological Informatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany aut Rassweiler Marie-Claire Department of Urology, Mannheim University Hospital, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany aut Klein Jan Department of Urology, SLK-Kliniken Heilbronn, Am Gesundbrunnen 20, 74078, Heilbronn, Germany aut Seitel Alexander Department of Medical and Biological Informatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany aut Gondan Matthias Institute of Medical Biometry and Informatics, University of Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany aut Baumhauer Matthias Department of Medical and Biological Informatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany aut Teber Dogu Department of Urology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany aut Rassweiler Jens Department of Urology, SLK-Kliniken Heilbronn, Am Gesundbrunnen 20, 74078, Heilbronn, Germany aut Meinzer Hans-Peter Department of Medical and Biological Informatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany aut Maier-Hein Lena Department of Medical and Biological Informatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany aut International Journal of Computer Assisted Radiology and Surgery Springer Berlin Heidelberg 8/4(2013-07-01), 663-675 1861-6410 8:4<663 2013 8 11548 https://doi.org/10.1007/s11548-013-0828-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11548-013-0828-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Müller Michael Department of Medical and Biological Informatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany aut NATIONALLICENCE 700 1- Rassweiler Marie-Claire Department of Urology, Mannheim University Hospital, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany aut NATIONALLICENCE 700 1- Klein Jan Department of Urology, SLK-Kliniken Heilbronn, Am Gesundbrunnen 20, 74078, Heilbronn, Germany aut NATIONALLICENCE 700 1- Seitel Alexander Department of Medical and Biological Informatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany aut NATIONALLICENCE 700 1- Gondan Matthias Institute of Medical Biometry and Informatics, University of Heidelberg, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany aut NATIONALLICENCE 700 1- Baumhauer Matthias Department of Medical and Biological Informatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany aut NATIONALLICENCE 700 1- Teber Dogu Department of Urology, Heidelberg University Hospital, Im Neuenheimer Feld 400, 69120, Heidelberg, Germany aut NATIONALLICENCE 700 1- Rassweiler Jens Department of Urology, SLK-Kliniken Heilbronn, Am Gesundbrunnen 20, 74078, Heilbronn, Germany aut NATIONALLICENCE 700 1- Meinzer Hans-Peter Department of Medical and Biological Informatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany aut NATIONALLICENCE 700 1- Maier-Hein Lena Department of Medical and Biological Informatics, German Cancer Research Center (DKFZ), Im Neuenheimer Feld 280, 69120, Heidelberg, Germany aut NATIONALLICENCE 773 0- International Journal of Computer Assisted Radiology and Surgery Springer Berlin Heidelberg 8/4(2013-07-01), 663-675 1861-6410 8:4<663 2013 8 11548 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer