IEAP - Institute of Experimental and Applied Physics CTU - Czech Technical University in Prague
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IEAP - Institute of Experimental and Applied Physics CTU - Czech Technical University in Prague
CTU - Czech Technical University in Prague
Staff  > Krejčí František, Ing., Ph.D.
Krejčí František
Krejčí František, Ing., Ph.D.

Department: Department of applied physics and technology
Position:
Phone number: +420 224 359 179
E-mail: frantisek.krejci@utef.cvut.cz
Collaboration: regular staff

Personal data
Born:   March 1984, Boskovice, Czech republic

Education:
  • 2009 - 2014   Faculty of Biomedical Engineering, CTU in Prague (Ph.D.)
  • 2006 - 2008   Faculty of Nuclear Sciences and Physical Engineering, CTU in Prague (MSc.)
  • 2006 - 2010   Masaryk Institute of Advanced Studies, CTU in Prague, Technical Teacher Education (BSc.)
  • 2003 - 2006   Faculty of Nuclear Sciences and Physical Engineering, CTU in Prague (BSc.)
  • 1999 - 2003   High School in Boskovice
Main Research Activities
  • Imaging techniques based on hybrid semiconductor pixel detectors and ionization radiation (phase contrast imaging with X-rays and neutrons, spatial resolution enhancement techniques, energy sensitive X-ray radiography and CT)
  • Application of radiation imaging for investigation in biology, material science, cultural heritage studies etc.
  • Image processing, image reconstruction
  • Investigation of semiconductor detection structures and their applications
  • Application of hybrid pixel detector technology for educational purposes
Membership and other activities
  • Member of IEEE Nuclear and Plasma Sciences Society
  • Secretary of the Czechoslovakia Section IEEE Nuclear and Plasma Sciences Society
  • Secretary of the Scientific seminar of the Institute of Experimental and Applied Physics CTU in Prague

Responsible for Grants (5)
676548 BrightnESS - Building a research infrastructure and synergies for highest scientific impact on ESS H2020 1.10.2015-1.10.2018
15-04987S Non-destructive methods as a tool for studies on diversity of Cretaceous fossil plants GAČR 1.1.2015-31.12.2017
TA04011329 Advanced techniques of X-ray radiography for life sciences and industry TAČR 1.7.2014-31.12.2017
CZ.1.05/3.1.00/14.0301 Universal radiographic system with high contrast and low dose of ionizing radiation OP VaVPI 1.1.2014-31.12.2014
289198 Advanced Radiation Dosimetry European Network Training initiative EU 1.2.2012-31.1.2016

All
(43)
Text format
Year

Ocenění Name Author Scientific journal OceněníYear
Evaluation of sample holders designed for long-lasting X-ray micro-tomographic scans of ex-vivo soft tissue samples Dudák J.; Žemlička J.; Krejčí F.; Karch J.; Patzelt M.; Zach P.; Sykora V.; Journal of Instrumentation 2016
High-contrast X-ray micro-radiography and micro-CT of ex-vivo soft tissue murine organs utilizing ethanol fixation and large area photon-counting detector Dudák J.; Žemlička J.; Karch J.; Patzelt M.; Mrzílková J.; Zach P.; Heřmanová Z.; Kvacek J.; Krejčí F. Scientific reports 6, 30385 2016
High-contrast X-ray micro-tomography of low attenuation samples using large area hybrid semiconductor pixel detector array of 10 x 5 Timepix chips Karch J.; Krejčí F.; Bartl B.; Dudák J.; Kuba J.; Kvacek J.; Žemlička J. Journal of Instrumentation 2016
Non-destructive imaging of framents of historical beeswax seals using high-contrast X-ray micro-radiography and micro-tomography with large area photon-counting detector array Karch J.; Bartl B.; Dudák J.; Žemlička J.; Krejčí F. Micron (accepted) 2016
Trichobilharzia regenti (Schistosomatidae): 3D imaging techniques in characterization of larval migration through the CNS of vertebrates Bulantova J.; Machacek T.; Panska L.; Krejčí F.; Karch J.; Jähring N.; Saghafi S.; Dodt H.; Horak P. Micron 2016
Visualization of delamination in composite materials utilizing advanced X-ray imaging techniques Vavřík D.; Jakůbek J.; Jandejsek I.; Krejčí F.; Kumpová I.; Žemlička J. Journal of Instrumentation 10 C04012 2015
X-ray micro-CT scanner for small animal imaging based on Timepix detector technology Dudák J.; Žemlička J.; Krejčí F.; Polanský Š.; Jakůbek J.; Mrzílková J.; Patzelt M.; Trnka J. Nucl. Instr. Methods A 773, 81-86 2015
High-contrast X-ray Radiography Using Hybrid Semiconductor Pixel Detectors with 1 mm thick Si sensor as a Tool for Monitoring Liquids in Natural Building Krejčí F.; Slavíková M.; Žemlička J.; Jakůbek J.; Kotlík P. Journal of Instrumentation 9 C07014 2014
Modular pixelated detector system with the spectroscopic capability and fast parallel read-out Vavřík D.; Holík M.; Jakůbek J.; Jakůbek M.; Kraus V.; Krejčí F.; Soukup P.; Tureček D.; Vacík J.; Žemlička J. Journal of Instrumentation 9 C06006 2014
Neutron and high-contrast X-ray micro-radiography as complementary tools for monitoring organosilicon consolidants in natural building stones Slavíková M.; Krejčí F.; Kotlík P.; Jakůbek J.; Tomandl I.; Vacík J. Nucl. Instr. Methods B: Beam Interactions with Materials and Atoms 338, 42-47 2014
X-Ray Phase Contrast Imaging with Hybrid Semiconductor Pixel Detectors Krejčí F. Ph.D. Thesis, Faculty of Biomedical Engineering, CTU in Prague 2014
X-ray inspection of composite materials for aircraft structures using detectors of Medipix type Jandejsek I.; Jakůbek J.; Jakůbek M.; Průcha P.; Krejčí F.; Soukup P.; Tureček D.; Vavřík D.; Žemlička J. Journal of Instrumentation 9 C05062 2014
A method discovering hidden beauty of nature: prestigious awards for Czech scientists from Science magazine (in Czech) Krejčí F. TechniCall 1 2013
Displacement tracking in single human trabecula with metal-plated micro-spheres using X-ray radiography imaging Jiroušek O.; Kytýř D.; Doktor T.; Krejčí F. Journal of Instrumentation 8 C02041 2013
Some properties of the neutron monochromatic beams obtained by multiple Bragg reflections realized in bent perfect single crystals Mikula P.; Vrana M.; Saroun J.; Krejčí F.; et. al. Applied Crystallography 46, 128-134 2013
2012 International Science & Engineering Visualization Challenge - Honorable Mention X-ray micro-radiography and microscopy of seeds Sýkora V.; Žemlička J.; Krejčí F.; Jakůbek J. Science 339 (6119), 511 2013
Application of High-resolution X-Ray Radiography for Monitoring the Penetration Depth of Consolidants in Natural Building Stones Krejčí F.; Jakůbek J.; Slavíková M.; Kotlík P. Engineering Mechanics Conference proceedings, Svratka, Czech Rep., Paper #312, pp. 733–739 2012
Detection of Soft X-rays with the Pixel Detector Timepix operated as a highly sensitive Dark-Current free CCD-like Camera Krejčí F.; Kroupa M.; Jakůbek J.; Brůža P.; Pánek D. 2011 IEEE Nuclear Science Symposium Conference Record, NP5.S-166, 1708 - 1712 2012
Mobile system for in-situ imaging of cultural objects Žemlička J.; Jakůbek J.; Krejčí F.; Hradil D.; Hradilová J.; Mislerová H. Journal of Instrumentation 7 C01108 2012
Pixel detector Timepix operated in pile-up mode for pulsed imaging with ultra-soft X-rays Krejčí F.; Jakůbek J.; Kroupa M.; Brůža P.; Pánek D. Journal of Instrumentation 7 C12013 2012
Probe and scanning system for 3D response mapping of pixelated semiconductor detector with X-rays and the timepix device Jakůbek M.; Jakůbek J.; Žemlička J.; Kroupa M.; Krejčí F. AIP Conf. Proc. 1423, pp. 461-466; doi:10.1063/1.3688846 2012
X-ray Radiography and Tomography for Monitoring the Penetration Depth of Consolidants in Opuka - the Building stone of Prague Monuments Slavíková M.; Krejčí F.; Žemlička J.; Pech M.; Kotlík P.; Jakůbek J. Journal of Cultural Heritage 13 (4), 357-364 2012
Coincidence Imaging System with Electron Optics Kroupa M.; Jakůbek J.; Krejčí F.; Žemlička J.; Horáček M.; Radlička T.; Vlček I. Nucl. Instr. Methods A 633, Suppl. 1, S270-S273 2011
Experimental study of rare fission decay and time detection of radioactive ions Granja C.; Bočarov V.; Krejčí F.; Mašek P. CTU Workshop (2011) pp. 4 2011
Investigation of different pixel detectors for laser-driven accelerated particle beams Reinhardt S.; Assmann W.; Granja C.; Jakůbek J.; Krejčí F. Radiotherapy and Oncology 99, Suppl. 1 (2011) S154 2011
Semiconductor pixel detector with absorption grid as a tool for charge sharing studies and energy resolution improvement Krejčí F.; Jakůbek J.; Kroupa M.; Jurka V.; Hruška K. Journal of Instrumentation 6 C12034 2011
Single grating method for low dose 1-D and 2-D phase contrast X-ray imaging Krejčí F.; Jakůbek J.; Kroupa M. Journal of Instrumentation 6 C01073 2011
Test of pixel detectors for laser-driven accelerated particle beams Reinhardt S.; Granja C.; Krejčí F.; Assmann W. Journal of Instrumentation 6 C12030 2011
Wide Energy Range Gamma-Ray Calibration Facility Kroupa M.; Janout Z.; Králík M.; Krejčí F.; Owens A.; Pospíšil S.; Quarati F.; Šolc J. IEEE NSS/MIC Knoxville Conf. Record (2011) 2011
Wide Energy Range Gamma-Ray Calibration Source Kroupa M.; Granja C.; Janout Z.; Králík M.; Krejčí F.; Owens A.; Pospíšil S.; Quarati F.; Šolc J.; Vobecký M. Journal of Instrumentation 6 T11002 2011
X-ray Phase Contrast Imaging Using Single Absorption Coded Aperture Krejčí F.; Jakůbek J.; Kroupa M. Nucl. Instr. Methods A 633, Suppl. 1, 181 - 184 2011
XUV radiation from gaseous nitrogen and argon target laser plasmas Vrba P.; Vrbová M.; Brůža P.; Pánek D.; Krejčí F.; Kroupa M.; Jakůbek J. Journal of Physics: Conference Series 2011
Hard x-ray phase contrast imaging using single absorption grating and hybrid semiconductor pixel detector Krejčí F.; Jakůbek J.; Kroupa M. Rev. Sci. Instrum. 81, 113702 2010
Low dose X-ray phase contrast imaging sensitive to phase effects in 2-D Krejčí F.; Jakůbek J.; Kroupa M. IEEE NSS/MIC/RTSD Knoxville Conf. Record M09-166, doi: 10.1109/NSSMIC.2010.5874172 2010
New approach in phase contrast X-ray imaging using coded aperture Krejčí F.; Jakůbek J.; Kroupa M. 11th ICATPP Conference, Villa Olmo - Como (Italy), 5-9 October 2009, ISBN 10 981-4307-51-2, pp. 59 – 63 2010
Non-Contact Imaging with Enhanced Spatial Resolution by Secondary Electron Detection Kroupa M.; Jakůbek J.; Krejčí F. IEEE NSS/MIC Knoxville Conf. Record, page 462-463, doi: 10.1109/NSSMIC.2010.5873803 2010
Non-contact Electron optics System for Coincidence Imaging analysis Kroupa M.; Jakůbek J.; Krejčí F. 11th ICATPP Conference, Villa Olmo - Como (Italy), 5-9 October 2009, ISBN 10 981-4307-51-2, pp. 631 – 635 2010
Series of Laboratory Exersices in the Physics of the Microworld Krejčí F. BSc. Thesis, Masaryk Institute of Advanced Studies, CTU in Prague 2010
Enhancement of spatial resolution of roentgenographic methods Krejčí F.; Jakůbek J.; Dammer J.; Vavřík D. Nucl. Instr. Methods A 607, Issue 1, 208-211 2009
Charge Collection Characterization with Semiconductor Pixel Detector Timepix Kroupa M.; Jakůbek J.; Krejčí F. IEEE NSS/MIC/RTSD Conf. Proc. (2008) R12-37 2008
Enhancement of Spatial Resolution of Roentgenographic Methods Using Deconvolution Krejčí F.; Jakůbek J.; Kroupa M.; Dammer J.; Vavřík D. IEEE NSS/MIC Conf. Proc. (2008) M06-315 2008
Enhancement of spatial resolution of roentgenographic methods Krejčí F.; Jakůbek J. Proceedings Workshop CTU Prague Vol. 12 (2008). FYZ 026 2008
Enhancement of spatial resolution of roentgenographic methods Krejčí F. MSc. Thesis, Faculty of Nuclear Sciences and Physical Engineering, CTU in Prague 2008
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