Prof. Jörg Huwyler Profile

Prof. Jörg Huwyler

Head of Research Group at Univ Basel

SPIE Involvement:

Author

Publications (5)

SPIE Journal Paper | 31 March 2022 Open Access

Comparative hard x-ray tomography for virtual histology of zebrafish larva, human tooth cementum, and porcine nerve

Alexandra Migga, Georg Schulz, Griffin Rodgers, Melissa Osterwalder, Christine Tanner, Holger Blank, Iwan Jerjen, Phil Salmon, William Twengström, Mario Scheel, Timm Weitkamp, Christian Schlepütz, Jan S. Bolten, Jörg Huwyler, Gerhard Hotz, Srinivas Madduri, Bert Müller

JMI, Vol. 9, Issue 03, 031507, (March 2022) https://doi.org/10.1117/12.10.1117/1.JMI.9.3.031507

KEYWORDS: Tomography, Teeth, Nerve, Spatial resolution, Hard x-rays, Cements, Synchrotrons, Imaging systems, Tissues, Data acquisition

Read Abstract +

Purpose: Synchrotron radiation-based tomography yields microanatomical features in human and animal tissues without physical slicing. Recent advances in instrumentation have made laboratory-based phase tomography feasible. We compared the performance of three cutting-edge laboratory systems benchmarked by synchrotron radiation-based tomography for three specimens. As an additional criterion, the user-friendliness of the three microtomography systems was considered. Approach: The three tomography systems—SkyScan 2214 (Bruker-microCT, Kontich, Belgium), Exciscope prototype (Stockholm, Sweden), and Xradia 620 Versa (Zeiss, Oberkochen, Germany)—were given 36 h to measure three medically relevant specimens, namely, zebrafish larva, archaeological human tooth, and porcine nerve. The obtained datasets were registered to the benchmark synchrotron radiation-based tomography from the same specimens and selected ones to the SkyScan 1275 and phoenix nanotom m® laboratory systems to characterize development over the last decade. Results: Next-generation laboratory-based microtomography almost reached the quality achieved by synchrotron-radiation facilities with respect to spatial and density resolution, as indicated by the visualization of the medically relevant microanatomical features. The SkyScan 2214 system and the Exciscope prototype demonstrated the complementarity of phase information by imaging the eyes of the zebrafish larva. The 3-μm thin annual layers in the tooth cementum were identified using Xradia 620 Versa. Conclusions: SkyScan 2214 was the simplest system and was well-suited to visualizing the wealth of anatomical features in the zebrafish larva. Data from the Exciscope prototype with the high photon flux from the liquid metal source showed the spiral nature of the myelin sheaths in the porcine nerve. Xradia 620 Versa, with detector optics as typically installed for synchrotron tomography beamlines, enabled the three-dimensional visualization of the zebrafish larva with comparable quality to the synchrotron data and the annual layers in the tooth cementum.

DOWNLOAD PAPER

Proceedings Article | 7 October 2021 Presentation + Paper

Laboratory-based phase and absorption tomography for micro-imaging of annual layers in human tooth cementum, paraffin-embedded nerve and zebrafish embryo

Alexandra Migga, Georg Schulz, Griffin Rodgers, Melissa Osterwalder, Christine Tanner, Holger Blank, Iwan Jerjen, Phil Salmon, William Twengström, Mario Scheel, Timm Weitkamp, Christian Schlepütz, Jan Bolten, Jörg Huwyler, Gerhard Hotz, Srinivas Madduri, Bert Müller

Proceedings Volume 11840, 118400T (2021) https://doi.org/10.1117/12.2597926

KEYWORDS: Teeth, Tomography, Nerve, Spatial resolution, Synchrotrons, Data acquisition, Tissues, Synchrotron radiation

Read Abstract +

Proceedings Article | 8 July 2021 Open Access

Hard X-ray microtomography of Zebrafish larvae

Melissa Osterwalder, Jan Stephan Bolten, Griffin Rodgers, Mattia Humbel, Georg Schulz, Christine Tanner, Jörg Huwyler, Bert Müller

Proceedings Volume 11886, 1188614 (2021) https://doi.org/10.1117/12.2593119

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 29 March 2021 Presentation + Paper

Three-dimensional x-ray microscopy of zebrafish larvae

Melissa Osterwalder, Jan Stephan Bolten, Griffin Rodgers, Georg Schulz, Christine Tanner, Emre Cörek, Jörg Huwyler, Bert Müller

Proceedings Volume 11586, 115860J (2021) https://doi.org/10.1117/12.2583639

KEYWORDS: X-ray microscopy, Nanoparticles, Tomography, Synchrotrons, Nanomaterials, Visualization, Toxicity, Tissues, Synchrotron radiation, Spatial resolution

Read Abstract +

Proceedings Article | 26 September 2017 Paper

Removing ring artefacts from synchrotron radiation-based hard x-ray tomography data

Peter Thalmann, Christos Bikis, Georg Schulz, Pierre Paleo, Alessandro Mirone, Alexander Rack, Stefan Siegrist, Emre Cörek, Jörg Huwyler, Bert Müller

Proceedings Volume 10391, 1039114 (2017) https://doi.org/10.1117/12.2274236

KEYWORDS: Tomography, Linear filtering, Digital filtering, Synchrotrons, Hard x-rays, Image registration, Sensors, Image quality, Image filtering, Detection and tracking algorithms

Read Abstract +

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years