RTK/Meetings/OnImageQualityInStaticCBCT: Difference between revisions

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= Date =
Friday, July 31, 2015
= Venue =
= Venue =


* Salle Marcel Dargent, 2ème étage, centre Léon Bérard, Lyon, France. The room has a videoconference equipment.
* Salle Marcel Dargent, 2ème étage, centre Léon Bérard, Lyon, France. The room has a videoconference equipment.
* Information on how to come to the Léon Bérard center is available [http://centreleonberard.fr/124-Comment-se-rendre-au-CLB.clb.aspx?language=fr-FR here].
* Information on how to come to the Léon Bérard center is available [http://centreleonberard.fr/124-Comment-se-rendre-au-CLB.clb.aspx?language=fr-FR here].
* Hotels: there are a few options around at a walking distance of the Léon Bérard center, any option along the D-line metro is good.
* Hotels: there are a few options around at a walking distance of the Léon Bérard center, any option along the metro line metro D is good.


= Attending =
= Attending =
Line 9: Line 13:
* Simon Rit, CREATIS, Lyon, France
* Simon Rit, CREATIS, Lyon, France
* Jean Michel Létang, CREATIS, Lyon, France
* Jean Michel Létang, CREATIS, Lyon, France
* Gloria Vilches Freixas, CREATIS, Lyon, France
* Philipp Steininger, radART / MedPhoton, Salzburg, Austria
* Philipp Steininger, radART / MedPhoton, Salzburg, Austria
* Sébastien Brousmiche, IBA, Louvain-La-Neuve, Belgium
* Sébastien Brousmiche, IBA, Louvain-La-Neuve, Belgium
* Geoff Hugo, VCU, USA
* Yu Liu, ETHZ, Switzerland
* Mathieu Dupont, CPPM, France
* Thibault Notargiacomo, GIPSA / Thales, France
* Edward Romero, Safran, France


= Problems addressed =
= Problems addressed =


* X-ray tube (geometric blurring, focal spot movements, fluctuations, heel effect)
* Detector lag
* Detector lag
* Scatter glare
* Scatter glare
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* Statistical noise
* Statistical noise
* Geometric calibration
* Geometric calibration
* Truncation
= Agenda =
* 9h00 - Welcome coffee, round table
* 9h30 - Presentation of cone-beam CT systems, review of characteristics (x-ray source, flat panel, geometry)
* 10h00 - Summary of artefact sources
* 10h45 - Break
* 11h00 - Detector effects (lag and glare)
* 11h45 - Beam hardening
* 12h30 - Lunch
* 13h30 - Scatter
* 14h45 - Quantum noise
* 15h30 - Break
* 16h00 - Geometric calibration
* 16h45 - Discussion (summary and action points)


= Existing RTK solutions =
= Existing RTK solutions =


* Look up table for linearizing input projection values, see, e.g., [ http://iopscience.iop.org/0031-9155/21/3/004 this work ]
* Look up table for linearizing input projection values, see, e.g., [http://iopscience.iop.org/0031-9155/21/3/004 this work ]
* [http://www.sciencedirect.com/science/article/pii/S016781409700073X Boellaard's scatter correction algorithm ]
* [http://www.sciencedirect.com/science/article/pii/S016781409700073X Boellaard's scatter correction algorithm ]
* [http://scitation.aip.org/content/aapm/journal/medphys/33/5/10.1118/1.2188076 Empirical cupping correction ]
* [http://scitation.aip.org/content/aapm/journal/medphys/33/5/10.1118/1.2188076 Empirical cupping correction ]
* [dx.doi.org/10.1088/0031-9155/56/6/019 Scatter glare removal ]
* [http://dx.doi.org/10.1088/0031-9155/56/6/019 Scatter glare removal ]
* [http://dx.doi.org/10.1118/1.2977759 Lag correction ]
* [http://dx.doi.org/10.1118/1.2977759 Lag correction ]
* Windowing in the ramp filter
* Iterative reconstruction algorithms
= State-of-the-art algorithms that are missing =
* [http://en.wikipedia.org/wiki/Savitzky%E2%80%93Golay_filter Savitzky–Golay filter]
* [http://dx.doi.org/10.1007/s003300050710 Scatter Kernel Superposition (SKS)] and [http://dx.doi.org/10.1088/0031-9155/55/22/007 Scatter Kernel Superposition (ASKS)]
* [http://dx.doi.org/10.1118/1.4923179 Scatter correction using prior scatter-free CT]


= Solutions under development / Being investigated =
= Solutions under development / Being investigated =


* Monte Carlo scatter correction (Simon Rit)
* Monte Carlo scatter correction (Simon Rit)

Latest revision as of 03:14, 31 July 2015

Date

Friday, July 31, 2015

Venue

  • Salle Marcel Dargent, 2ème étage, centre Léon Bérard, Lyon, France. The room has a videoconference equipment.
  • Information on how to come to the Léon Bérard center is available here.
  • Hotels: there are a few options around at a walking distance of the Léon Bérard center, any option along the metro line metro D is good.

Attending

  • Simon Rit, CREATIS, Lyon, France
  • Jean Michel Létang, CREATIS, Lyon, France
  • Gloria Vilches Freixas, CREATIS, Lyon, France
  • Philipp Steininger, radART / MedPhoton, Salzburg, Austria
  • Sébastien Brousmiche, IBA, Louvain-La-Neuve, Belgium
  • Geoff Hugo, VCU, USA
  • Yu Liu, ETHZ, Switzerland
  • Mathieu Dupont, CPPM, France
  • Thibault Notargiacomo, GIPSA / Thales, France
  • Edward Romero, Safran, France

Problems addressed

  • X-ray tube (geometric blurring, focal spot movements, fluctuations, heel effect)
  • Detector lag
  • Scatter glare
  • Patient scatter
  • Beam hardening
  • Statistical noise
  • Geometric calibration
  • Truncation

Agenda

  • 9h00 - Welcome coffee, round table
  • 9h30 - Presentation of cone-beam CT systems, review of characteristics (x-ray source, flat panel, geometry)
  • 10h00 - Summary of artefact sources
  • 10h45 - Break
  • 11h00 - Detector effects (lag and glare)
  • 11h45 - Beam hardening
  • 12h30 - Lunch
  • 13h30 - Scatter
  • 14h45 - Quantum noise
  • 15h30 - Break
  • 16h00 - Geometric calibration
  • 16h45 - Discussion (summary and action points)

Existing RTK solutions

State-of-the-art algorithms that are missing

Solutions under development / Being investigated

  • Monte Carlo scatter correction (Simon Rit)
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