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Optimisation of acquisition and reconstruction parameters for a portable cone-beam computed X-ray tomography system
At our Institute, we have recently developed a light, portable, and highly configurable X-ray computed tomography system. To further optimize the quality of our scans, we want to systematically test various system settings during image acquisition and image reconstruction for different sample types.
Keywords: Optimization, Cone-beam CT, Acquisition and reconstruction parameters
Medical and scientific systems for X-ray computed tomography imaging are typically bulky stationary devices. So far, such devices could not be applied flexibly during archaeological fieldwork, in museums or under otherwise challenging field conditions. The Institute of Evolutionary Medicine of the UZH studies ancient human remains, such as skeletons or mummies, to investigate the evolution of human health and diseases. To facilitate our research activities, we have recently developed a light, portable, and highly configurable X-ray computed tomography system, which is based on mobile veterinary equipment for conventional projection X-ray imaging. We are currently reconstructing tomographic data sets using the interface of our stationary X-ray microtomography device, which involves certain inherent limitations. To further optimize the quality of our tomographic scans we want to systematically test various system settings during image acquisition and image reconstruction for different types of samples.
This project is straight-forward and comprises three steps.
In a first part, in one of our labs, scans of different sample types (phantoms, mummified and skeletal human remains) shall be acquired using different settings (kV, mAs, number of images).
In a second part, at a computer workstation, tomographic sections shall be reconstructed from the acquired raw data, again using different settings (adjustment of resolution, histogram, and number of interpolated images).
In a third step, the reconstructed tomographic datasets shall be compared and evaluated to determine the best settings for a certain type of sample.
Medical and scientific systems for X-ray computed tomography imaging are typically bulky stationary devices. So far, such devices could not be applied flexibly during archaeological fieldwork, in museums or under otherwise challenging field conditions. The Institute of Evolutionary Medicine of the UZH studies ancient human remains, such as skeletons or mummies, to investigate the evolution of human health and diseases. To facilitate our research activities, we have recently developed a light, portable, and highly configurable X-ray computed tomography system, which is based on mobile veterinary equipment for conventional projection X-ray imaging. We are currently reconstructing tomographic data sets using the interface of our stationary X-ray microtomography device, which involves certain inherent limitations. To further optimize the quality of our tomographic scans we want to systematically test various system settings during image acquisition and image reconstruction for different types of samples.
This project is straight-forward and comprises three steps.
In a first part, in one of our labs, scans of different sample types (phantoms, mummified and skeletal human remains) shall be acquired using different settings (kV, mAs, number of images).
In a second part, at a computer workstation, tomographic sections shall be reconstructed from the acquired raw data, again using different settings (adjustment of resolution, histogram, and number of interpolated images).
In a third step, the reconstructed tomographic datasets shall be compared and evaluated to determine the best settings for a certain type of sample.
To find optimal settings for acquisition and reconstruction parameters for different types of samples for our portable cone-beam computed X-ray tomography system.
To find optimal settings for acquisition and reconstruction parameters for different types of samples for our portable cone-beam computed X-ray tomography system.
Dr. med. Patrick Eppenberger, Dipl. Industrial Designer FH
Leader of Paleopathology and Mummy Studies Group a.i.
Institute of Evolutionary Medicine (IEM)
University of Zurich
Winterthurerstrasse 190
CH-8057 Zurich, Switzerland
Office: Room Y42 G86a
Phone +41 44 635 05 43, Mobile +41 79 4876574, Fax: +41 44 635 05 19
Dr. med. Patrick Eppenberger, Dipl. Industrial Designer FH Leader of Paleopathology and Mummy Studies Group a.i. Institute of Evolutionary Medicine (IEM) University of Zurich Winterthurerstrasse 190 CH-8057 Zurich, Switzerland Office: Room Y42 G86a Phone +41 44 635 05 43, Mobile +41 79 4876574, Fax: +41 44 635 05 19