Event Calendar

In the frame of three European projects, the Instruct ESFRI project on Structural Biology, the Biostruct-X project and the COST Action MP1207, the Instruct Image Processing Center at CNB-CSIC organized a training school on 3D Reconstruction in Electron Microscopy and Soft X-ray Microscopy. The course was focused on image processing topics. The course was attended by 21 participants. MP1207 provided trainee grants for 4 participants, reimbursement for one trainer, and Local Organiser Support.

This dedicated EXTREMA workshop took place at the Lorentz Center in Leiden (http://www.lorentzcenter.nl/). The program consisted of a broad lecture program in the mornings and focused discussions in the afternoons, where the participants worked in three groups on several key problems at the boundary of X-ray imaging and computation. MP1207 provided participant reimbursement for 32 participants and Local Organiser Support.

This special EXTREMA session on combinatorial aspects of tomography was embedded in the 27th conference of the European Chapter on Combinatorial Optimization. It was a 1-day event, where researchers from theoretical aspects of tomography and more practice-oriented scientists presented their work and had discussions, aimed at finding common interests and setting new directions for joint research. MP1207 provided participant reimbursement for 7 participants and Local Organiser Support.

This meeting brings together participants from the COST Actions MP1203 (X-ray metrology) and MP1207 (X-ray tomography) to explore the boundaries between the two topics and find common interests. MP1207 will provide participant reimbursement for 7 participants (all members of EXTREMA) and Local Organiser Support.

This workshop focused on advances in X-ray imaging exploiting the coherent light 3rd and 4th generation synchrotron light sources, with special attention paid to progresses in image analysis with reference to their application in different research field, from medicine, biology, cultural heritage till new materials.
Local Organiser: Lucia Mancini (Elettra – Sincrotrone Trieste, Italy)

Significant progress has been made in recent years in the ability to perform advanced 3D X-ray imaging for scientific, industrial and medical applications. The quality of such images is often limited by the presence of certain structured distortions, known as “artefacts”. Artefacts can have a broad range of causes, related to the experimental setup, but also to the computations performed on the measured data. The main goal of this Lorentz Center Workshop was to initiate an in-depth discussion on the various artefacts that arise in X-ray tomography.
The workshop brought together around 55 participants from different communities (mathematical, computational, engineering, photonics, experimental) involved in tomography. From the first day and onwards, there was a strong urge among the participants to zoom into concrete problems and exchange experiences related to these problems.
Several discussion groups on selected topics were formed during the week:
1. Region-of-Interest Tomography
2. X-ray micro-CT
3. Full system calibration
4. Fluid flow reconstruction in CT
5. Reconstruction from limited and noisy data
6. Correction for motion introduced during acquisition
7. Quality measures for tomography scans
Before the workshop, Francesco de Carlo compiled a repository of experimental synchrotron datasets that served as a basis for many of the discussions.A particular successful item in the program was the speeddating session, where participants were teamed up in pairs for 3-minute discussions. Although no one knew what to expect, it was highly valued by most participants as a good means of creating new contacts.
As a platform for shaping the newly formed collaborations, a web repository was set up for the different topics treated during the workshop, which can be found at https://confluence.aps.anl.gov/display/XSDLORENTZ2015/Artefacts+in+X-Ray...

Organizing committee: Joost Batenburg, Francesco de Carlo, Lucia Mancini, Jan Sijbers

The EXTREMA COST Action provided reimbursement for 22 participants, covering travel and lodging costs and Local Organizer Support, for a total of € 20.612,98.

The ESRF workshop was intended to bring together experimental and computational scientists involved in advanced X-ray tomography in the state-of-the-art synchrotron X-ray imaging environment of ESRF.
The program centered around three challenging topics, for which datasets have been made available before the workshop: (i) combined phase retrieval and tomography; (ii) region-of-interest tomography; (iii) limited data and low-dose tomography. A unique feature of this workshop was the hands-on program on the first day, where the participants experienced the actual imaging process at various synchrotron tomography beamlines.
Local organizers: Wolfgang Ludwig, Peter Cloetens, Claudio Ferrero

The EXTREMA COST Action provided reimbursement for 19 participants, covering travel and lodging costs and Local Organizer Support, for a total of € 17.762,80.

X-ray phase contrast (PC) computed tomography (CT) has been heavily investigated over the last two decades. It holds potential to overcome the major limiting factor of conventional CT: poor contrast for soft biological tissues. This is because contrast in PC-CT is driven by phase effects rather than attenuation ones, which can be several orders of magnitude stronger than the latter. PC-CT is typically implemented using propagation-based, crystal-based or grating-based approaches. These methods, however, rely either on spatially or temporarily coherent or quasi-parallel beams. These conditions are only met at synchrotrons, or, to some extent, by micro-focal x-ray tubes. The use of synchrotrons and micro-focal x-ray tubes is not suited to many practical applications due to accessibility and x-ray flux constraints, respectively. At UCL, new approaches to PC-CT have been developed, named edge illumination PC-CT, which has been demonstrated in several instances to work well with x-ray tubes with relatively large focal spots, i.e. in a scenario that is closer to practical reality.

This workshop was primarily aimed at a) identifying the origin of artefacts in edge illumination PC-CT images and b) at finding approaches towards their elimination, but also at c) gaining insight about image acquisition and reconstruction techniques employed by other groups, and d) at identifying possible future collaborations.

Local Organizers: Charlotte Hagen and Anna Zamir

The EXTREMA COST Action provided reimbursement for 5 participants, covering travel and lodging costs and Local Organizer Support.

EU COST MP1207 Event: Workshop on ROI Tomography in Triest 17-20 Nov 2015

EU COST MP1207 Event: Workshop on Big Data and Big Computation for Tomography in Szeged 25-27 Jan 2016

International Workshop on Process and Biomedical Tomography

https://extrema2016.po.opole.pl/

Focused Mini-Workshop on Laboratory X-ray Phase Contrast Tomography

UCL London, 29-31 March 2017