papers in peer reviewed journals
[1-74] “The Forces Driving Streaming in Presence of Scatterers Mimicking The Blood Cells or The Contrast Agents, J.Wójcik, W. Secomski, N. Żołek, Archives of Acoustics, Vol.44, No. 4, (2019),pp.659-668, DOI: 1024425/aoa.2019.129722
[2-73] ”Using Empirical Mode Decomposition of Backscattered Ultrasound Signal Power Spectrum for Assessment of Tissue Compression, M. Byra, J. Wójcik, A. Nowicki, Archives of Acoustics, Vol.43, No. 3, 2018, pp.447-453, DOI:10.24425/123916
[3-72] “Influence of absorption and scattering on the velocity of acoustic streaming”, Secomski W., Wójcik J., Klimonda Z., Olszewski R., Nowicki A., Hydroacoustics,Vol.20, No.1 ISSN:1642-1817, 2017, pp.159-166
[4-71] "Grating Lobes Suppression by Adding Virtual Receiving Subaperture in Synthetic Aperture Imaging", J. Wojcik, M. Lewandowski, N. Żołek, Ultrasonics, vol..,no., 2017,pp. ULTRAS5442, http://dx.doi.org/10.1016/j.ultras.2016.12.
[5-70] "Theoretical and numerical aspects of nonlinear reflection-transmission phenomena in acoustics", J. Wojcik , B. Gambin, Applied Mathematical Modeling (Else), Vol.42, 2017, pp.100-113, DOI: 10.1016/j.apm.2016.10.026
[6-69] "A spectral-based method for tissue characterization" J. Wójcik, M. Byra, A. Nowicki, Hydroacoustics , ISSN 1642-1817, Vol.19, 2016, pp.369-375
[7-68] "Differentiation of random structure properties using wavelet analysis of backscattered ultrasound", B. Gambin, J. Wójcik, O. Doubrovina, Hydroakustics, ISSN 1642-1817, Vol.19, 2016,pp.121-128
[8-67] "Strain examinations of the left ventricle phantom by ultrasound and multislices computed tomography imaging", Z. Trawiński, J. Wójcik, A, Nowicki, R. Olszewski, A. Balcerzak, E. Frankowska, A. Zegadło, P. Rydzyński, Biocybernetics and Biomedical Engineering, Vol.35(2015) pp.255–263
[9-66] "Relationship between thermal and ultrasound field in tisue in vivo", B. Gambin, E. Kruglenko, J. Wójcik, Hydroakustics, ISSN 1642-1817, Vol.18, pp.53-58, 2015
[10-65] "Theoretical results and numerical study on nonlinear reflection and transmission of plane sound sound waves", J. Wójcik, B. Gambin, J. Litniewski, Hydroakustics, ISSN 1642-1817, Vol.18, pp.181-192, 2015
[11-64] "Eestimation of layer thickness by the cost function optimization: phantom study", J. Tasinkiewicz, J. Podhajecki, J. Wojcik, K. falińska, J. litniewski, Hydroakustics, ISSN 1642-1817, Vol.18, pp.161-166, 2015
[12-63] "Assessment of Left Ventricle Phantom Wall Compressibility by Ultrasound and Computed Tomography Methods", Trawiński Z, Wójcik J, Nowicki A., Balcerzak A., Olszewski R., Frankowska E., Zegadło A., Rydzyński P., Hydroakustics, ISSN 1642-1817, vol.17, pp.211-218, 2014
[13-62] "Ultrasound imaging of stiffness with two frequency pulses", A. Nowicki, M. Byra, J. Litniewski, J, Wójcik, Hydroakustics, ISSN 1642-1817, 2014 vol.17, pp.151-160
[14-61] "Foundation of the new method of numerical calculations of the nonlinear acoustics fields. Application for array", Janusz Wojcik, Leszek Filipczyński, Andrzej Nowicki. Hydroacoustics, vol. 16, ISSN 1642-1817, 2013 pp.253 – 262,.
[15-60] "Dynamic Ultrasonic Model of left Ventricle", Trawiński Z, Wójcik J., Nowicki A., Olszewski R., Hydroakustics , ISSN 1642-1817, vol.16, 2013, 231-236
[16-59] “Some comments on Wójcik’s hypothesis", Piekarski, S.; Wójcik, J., arXiv:1204.6267v1, Cornell University Library, apr. 2012 [pdf] .
[17-58] "Mathematical and Ultrasonographic Model of the Left Ventricle:in Vitro Studies", Olszewski R., Trawiński Z., Wójcik J., Nowicki A., Archives of Acoustics , 37 (4) 2012, pp.583-595
[18-57] "Cumulative method of the image reconstruction in synthetic aperture. experimental results", J. Wojcik, I. Trots, M. Lewandowski, A. Nowicki, Hydroakustics, ISSN 1642-1817, 2012, vol. 15 ,pp.195-206
[19-56] "Modeling and analysis of multiple scattering of acoustic waves in complex media: Application to the trabecular bone”, Wojcik J., Litniewski J., Nowicki A., J.Acoust. Soc. Am., 130 (4),2011, pp.1908-1918
[20-55] ”Statistics of the envelope of ultrasonic backscatter from human trabecular bone”, J. Litniewski, L. Cieślik, J Wójcik, A. Nowicki, J.Acoust.Soc. Am.,130 (4), 2011, pp.2224-2232
[21-54] "Thick Film Transducers for High Frequency Coded Ultrasonography", Nowicki A., Lewandowski M., Wójcik J., Tymkiewicz R.,Lou-Moller R.,Wolny W., Zawada T., Archives of Acoustics, 36 (4), 2011, pp. 945-954.
[22-53] ”Applying crystallography in analysis of trabecular bone backscatter”, Wójcik J., Litniewski J., Nowicki A., Gambin B., Hydroacoustics, ISSN 1642-1817, Vol.14, 2011,pp.255-266
[23-52] "Example of structure modeling and analysis of ultrasound scattering for trabecular bone", J. Wojcik, J. Litniewski, A. Nowicki, Archives of Acoustics, 35, (4) ,2010, pp.701-713.
[24-51] "Annular array transducers and matched amplifier for therapeutic ultrasonography", W.Secomski, A. Nowicki, J. Wójcik, M. Walczak, R. Tymkiewicz, Archives of Acoustics, 35, (4), 2010, pp.653- 660,
[25-50] "Temperature fields induced in rat liver in vitro by pulsed low intensity focused ultrasound" T. Kujawska, J. Wójcik, A. Nowicki, Hydroacoustics, ISSN 1642-1817, vol.13, 2010, pp.153-162,.
[26-49] "Ultrasonic Characterization of Trabecular Bone:Two Scatterers’ Population Model" Litniewski, A. Nowicki, J. Wojcik, Physic Procedia (Elsevier), Vol.3, 2010, pp.707-712
[27-48] "Nonlinearly Coded Signals for Harmonic Imaging", A. Nowicki, J. Wójcik, T. Kujawska, Archives of Acoustics, 34, No.1,2009, pp.63-74.
[28-47] "Multiple scattering contribution to trabecular bone backscatter", J. Wójcik, J. Litniewski, A. Nowicki, Hydroacoustics, vol.12, 2009,pp.227-236
[29-46] "Numerical modeling of ultrasound-Induced Temperature Fields in Multi Layer Nonlinear Attenuating Media ", T.Kujawska, J. Wójcik, A. Nowicki, Hydroacoustics, vol.12, 2009, pp.91-98, ISSN 1642-1817
[30-45] "Multitone Nonlinear Coding", A. Nowicki, J. Wojcik, W. Secomski, Hydroacoustics, Vol.11, 2008, pp.289-298
[31- 44] "Ultrasonic non-invasive method for relative changes measurements of IMT in common carotid artery wall" Z. Trawiński", T. Powałowski, J. Wójcik, P. Gutkiewicz, Acta Physica Polonica A, Vol.114 S, pp. A241-A 246,2008.
[32-43] "Fast prediction of pulsed nonlinear acoustic fields from clinically relevant sources using time-averaged wave envelope approach: Comparison of numerical simulations and experimental results", J. Wójcik, T. Kujawska, A. Nowicki, P.A. Lewin, Ultrasonics, Vol.48.,No.8, 2008,pp.707-715
[33-42] "Pulsed nonlinear acoustic fields from clinically relevant sources; numerical calculations and experimental results ", J. Wójcik, T. Kujawska, A. Nowicki, Archives of Acoustics, 33, (4), 2008,pp.565-572.
[34-41] "Comparison of methods used for ultrasonic examination of IMT in the wall of the carotid artery model", Z.Trawiński, J.Wójcik, Archives of Acoustics, 33,4, 2008, pp.27-32.
[35-40] "Numerical analyze and experimental results of ultrasonic waves scattering ona model of the artery", J.Wójcik, T.Powałowski, Z.Trawiński, Molecular and Quantum Acoustics, Vol.28,2007,pp.279-302
[36-39] "Comparison of experimental results and numerical calculations of ultrasonic waves scattering on a model of the artery", J. Wójcik, Z. Trawiński, T. Powałowski, Hydroacoustics, vol.11, 2008,pp.449-458, ISSN 1642-1817
[37-38] "Numerical simulation and experimental results of ultrasonic waves scattering on a model of the artery", J. Wójcik, T. Powałowski, Z. Trawiński, European Physics Journal Special Topics, Vol.154. 2008 pp.235-238
[38-37] "Multitone nonlinear coding", A. Nowicki, J. Wójcik, W. Secomski, Hydroacoustics, vol.11, 2008, ISSN 1642-1817, pp.289-498,
[39-36] "Harmonic Imaging Using Multitone Nonlinear Coding", A. Nowicki, J. Wójcik, W. Secomski, Ultrasound in Medicine and Biology, Vol.33, No.7 ,2007, pp.1112-1122 (14+2, 16)
[40-35] "Modeling of examinations of artery wall thickness changes", T. Powałowski, J. Wójcik, Z. Trawiński, Archives of Acoustics, 32,No4,2007, pp.851-858
[41-34] "Numerical solver of acoustic field in simulation of artery wall thickness examinations", Powałowski, J. Wójcik, Z. Trawiński, Hydroacoustics, ISSN 1642-1817, vol.10, 2007, pp.123-168,
[42-33] "Wave envelopes method for description of nonlinear acoustic wave propagation", J. Wójcik, A. Nowicki, P.A. Lewin, P.E. Bloomfield, T. Kujawska, L. Filipczyński, Ultrasonics, (Elsevier), Vol.44.,No.3(July), 2006,pp.310-339. (29+5 , 37)
[43-32] "Scattering of ultrasonic wave on a model of the artery", J. Wójcik, T. Powałowski, R. Tymkiewicz, A.Lamers, Z. Trawiński, Archives of Acoustics, Vol.31, (4),2006, pp.471-479
[44-31] "Nonlinear ultrasound propagation in water from square focused transducer", T. Kujawska, J. Wójcik , A.Nowicki, , Hydroacoustics, ISSN 1642-1817, vol. 8,2005, pp. 89-98
[45-30] "Probing acoustic fields of clinically relevant transducers: The effect of hydrophone probes finite apertures and bandwidths" E. Radulescu, P.A. Lewin, J. Wojcik, A. Nowicki, IEEE UFFC, Vol.51, No.10, October 2004,pp.1262-1270
[46-29] ”Possible Temperature Effects Computed for Acoustic Microscopy Used For Living Cells”, Kujawska T., Wójcik J., Filipczyński L.,Ultrasound in Medicine and Biology, Vol.30, No.1,2004, pp.93-101. (8+2, 12)
[47-28] ”The influence of finite aperture and frequency response of ultrasonic hydrophone probes On the determination of acoustic output” Radulescu E.G., Lewin P.A., Wójcik J., Nowicki A., Berger W.A ,Ultrasonics (Else), Vol.42.,No.1-9, April 2004, pp.367-372
[48-27] "Nonlinear reflection and transmission of plane acoustic waves", J.Wójcik, Archives of Acoustics, Vol.29,(4) ,2004,pp.607-632.
[49-26] "Fundation of the new methodof numerical calculations of the nonlinear acoustics fields", Wójcik J., Filipczyński L., Kujawska T., Nowicki A. Hydroacoustics, Vol.7, 2004, ISSN 1642-1817, pp.227-234
[50-25] "Harmonic ultrasound beams forming by means of radiating source parameters", Kujawska T., Wójcik J., Hydroacoustics, ISSN 1642-1817, vol.7, 2004, pp.135-142
[51-24] "Dependence of non-linear ultrasound beam propagation on boundary conditions", Kujawska T., Wójcik J., Ultragarsas,Vol.4(53),2004,pp.52-55,
[52-23] “Calibration of Ultrasonic Hydrophone Probes up to 100 MHz using Time Gating Frequency Analysis and Finite Amplitude Wave”, E.G Radulescu, P.A. Lewin, J. Wójcik, A. Nowicki, Ultrasonics (Else), Vol.41, (4), June 2003, pp.247-254., (36+6, 38)
[53-22] “Nonlinear Propagation Model for Ultrasound Hydrophones Calibration in Frequency Range up to 100 MHz”, E.G Radulescu, J. Wójcik, P.A. Lewin, and A. Nowicki, Ultrasonics (Else), Vol.41, Number 4,June 2003,pp.239-245. (10+2, 15)
[54-21] "Dispersion and Energy Losses", J. Wójcik, Solid States Phenomena, ISBN:3-908450-74-8,2003 (c 2003 Scitec Publications Switzerland). Vol. 89, pp-335, DOI. 10.4028/www.scientific.net/SSP.89.335, ISSN: 1662-9779
[55-20] ”Nonlinear and linear pressure determination in a two layer structure: solid crystal– water at GHz frequencies” Filipczyński L., Wójcik J., Kujawska T., Hydroacoustics, ISSN 1642-1817, Vol. 5/6, 2003, pp.143-150, 2003,
[56-19] ”Nonlinear equations of acoustics – numerical solutions and their Visualization”, Wójcik J., Lewin P.A., Nowicki A., Filipczyński L., Kujawska T., Radulescu E., Hydroacoustics, ISSN 1642-1817, Vol. 5/6,2003, pp.137-142
[57-18] ”Nonlinear effects and possible temperature increases in ultrasonic microscopy”, J. Wójcik. J. Litniewski, L. Filipczyński, T. Kujawska, Archives of Acoustic, Vol.27, (3),2002, pp.191-201
[58-17] “Numerical and experimental pressure determination in the very near filed of a piezoelectric transducer”, L. Filipczynski, J. Wójcik, T. Kujawska, Archives of Acoustic, Vol. 26, No.3,2001
[59-16] "Nonlinear Native Propagation Effect of Diagnostic Ultrasound Computed end Measured in Blood" L. Filipczynski, J. Wójcik, T. Kujawska, G. Łypacewicz, R. Tymkiewicz, B. Zienkiewicz, Ultrasound in Med. & Biol., Vol.27, No.2, pp.251-257, 2001
[60-15] "Nonlinear reflection and transmission of plane acoustic waves", J. Wójcik, IFTR Reports, ISSN0208-5658, 1/2000
[61-14] "Computing and measuring nonlinear and linear propagation by two independent methods", L. Filipczynski, T. Kujawska, W. Secomski, R. Tymkiewicz, J. Wójcik, Archives of Acoustics, 24,3, pp.269-288, 1999
[62-13] "Transport of Energy in the Ultrasound Wave Field" (in Polish), J. Wójcik, IFTR Reports, 2/1999
[63-12] "Nonlinear and linear propagation of diagnostic ultrasound pulses", L. Filipczynski, T. Kujawska, R. Tymkiewicz, J. Wojcik, Ultrasound in Med. & Biol.,Vol.25,No.2, pp. 285-299, 1999, (23+5, 32)
[64-11] "Temperature elevations computed for three-layer and four-layer obstetrical tissue model in nonlinear and linear ultrasonic propagation cases", J. Wójcik, L. Filipczynski, and T. Kujawska, Ultrasound in Med.& Biol.,Vol.25, No.2, pp.259-267, 1999 (10+2, 11)
[65-10] ”Conservation of energy and absorption in acoustic fields for linear and nonlinear propagation”, J. Wójcik, J.Acoust.Soc.Am. 104 (5), pp.2654-2663, November 1998 (34+1, 39)
[66-9] "A multi layer method for linearity determination of the PVDF hydrophone for pressures up to 2.3 MPa ", L. Filipczynski, J. Etienne, T. Kujawska, R. Tymkiewicz, J. Wójcik, Archives of Acoustics, 23,4, pp.513-520, 1998
[67-8] "Estimation of acoustical streaming: theoretical model, Doppler measurements and optical visualization", A. Nowicki, T. Kowalewski, W. Secomski, J. Wójcik, European Journal of Ultrasound (Else), 7,1998, pp.73-81 (17, 30)
[68-7] "Acoustical distortions in capacitance hydrophones and the effect of diaphragms in measurements of shock wave pulses", L. Filipczynski, J. Etienne, T. Kujawska, J. Wójcik, B. Zienkiewicz, Archives of Acoustics, 23,2,1998, pp.251-266
[69-6] ”Acoustic streaming: Comparison of low amplitude linear model with streaming velocities measured by means of 32 MHz doppler”, A. Nowicki, W. Secomski, J. Wójcik, Ultrasound in Med.& Biol.,Vol.23, No.5, pp. 783-791, 1997 (19+7)
[70-5] ”Integral equations for disturbance propagation in linearized Vlasov plasmas. Numerical results”, A.J. Turski, J. Wójcik, Arch.Mech.,48,6,pp.1047-1067, Warszawa 1996
[71-4] ”Amplitude, isobar and gray -scale imaging of ultrasonic shadows behind rigid, elastic and gaseous spheres”, L. Filipczynski, T. Kujawska, R. Tymkiewicz, J. Wójcik, Ultrasound in Med.& Biol.,Vol.22, No.2, pp.261-270,1996
[72-3] ”Grey scale imaging of ultrasonic shadow behind rigid, elastic and gaseous spheres in a tissue-like attenuating medium”, L. Filipczynski, T. Kujawska, J. Wójcik, Acoustical Imaging, Vol.22, Plenum Press, New York, 1996, pp.215-220
[73-2] ”Temperature elevation in focused Gaussian ultrasonic beams at various insonation times”, L. Filipczynski, T. Kujawska, J. Wójcik, Ultrasound in Med.& Biol.,Vol.19, No.8, pp.667-679,1993. 32
[74-1] ”Estimation of transient temperature elevation in lithotripsy and in ultrasonography”, L. Filipczynski, J. Wójcik, Ultrasound in Med.& Biol.,Vol.17,No.7, pp.715-721, 1991
conference papers
[C01] “Estimation and Measurement of the Streaming Velocity in Presence of the Contrast Agents or Blood Mimicking Scatterers”, Secomski W., Wójcik J., Klimonda Z., Nowicki A., 2017 IEEE International Ultrasonics Symposium, 2017-09-06/09-09, Washington, (US), DOI: 10.1109/ULTSYM.2017.8092858
[C02] “Optimized Acoustic Echoes Simulator in Fourier domain”, Żołek N., Wójcik J, 2017 IEEE International Ultrasonics Symposium, 2017-09-06/09-09, Washington, (US), DOI: 10.1109/ULTSYM.2017.8092654 .
[C03] “Ultrasound nonlinearity parameter assessment using plane wave imaging”, Byra M., Wójcik J., Nowicki A., 2017 IEEE International Ultrasonics Symposium, 2017-09-06/09-09, Washington, DOI: 10.1109/ULTSYM.2017.8082733 .
[C04] "Two Frequencies Push-Pull Differential Imaging", Nowicki A., Byra M., Litniewski J., Wójcik J., 2014 IEEE IUS, Chicago, 978-1-4799-7049-0/14/$31.00, ©2014 IEEE, pp.710-713, DOI. 10.1109/ULTSYM.2014.0175
[C05] "Cumulative method of image reconstruction in synthetic aperture- theory and experimental results", J. Wójcik, I. Trots, A. Nowicki, M. Lewandowski, IEEE IUS Symp, Praga 21-25 2013, 978-1-4673-5686-2/13/$31.00, pp. 2068-2071 DOI: 10.1109/ULTSYM.2013.0528
[C06] "Contribution of multiple scattering to the trabecular bone backscatter - dependence on porosity and frequency", Litniewski J., Wojcik J., Nowicki A., 2012 IEEE IUS, October 7-10, 2012, Dresden Germany, pp.2596-2598 DOI: 10.1109/ULTSYM.2012.0650
[C07] "Statistical properties of trabecular bone backscatter: experimental and simulations results", Litniewski J., Cieślik L., Wójcik J., Nowicki A., San Diego California, October 11-14, 2010, IEEE IUS, 6 2011, pp. 2155-2158 DOI. 10.1109/ULTSYM.2010.0544
[C08] "Ultrasonic Characterization of cancellous bone using three models of trabecular structure", Litniewski, A. Nowicki, J.Wojcik, 159th Meeting Acoustical Society of America/ NOISE-CON 2010 Baltimore, Maryland 19-23 April 2010, Proceedings of Meetings on Acoustics, Vol. 9, 020002, 2010, DOI: 10.1121/1.3445778, http://asa.aip.org,
[C09] "Heating of tissues in vivo by pulsed focused ultrasound to stimulate enhanced HSP expression",T. Kujawska, J. Wójcik and A. Nowicki, 10th International Symposium on Therapeutic Ultrasound (ISTU 2010) ,AIP Conf.Proc.1359, ©2011 American Institute of Physic 978-0-7354-0917-0/$30.00, 2011, pp.24-29 DOI. 10.1063/1.3607877
[C10] "Thick Film Transducers for High Frequency Coded Ultrasonography",A.Nowicki, J. Wójcik, M.Lewandowski, R.Tymkiewicz, R.Lou-Moller,W.Wolny, T.Zawada, Proceedings of the 9th International Conference on Information Technology and Applications in Biomedicine", ITAB 2009 (IEEE) , Larnaca, Cyprus, 5-7 November 2009, pp. 1 - 4, DOI: 10.1109/ITAB.2009.5394411, CD-ROM ISBN: 978-1-4244- 5379-5, Print ISSN: 2168- 2194 , Electronic ISSN: 2168-2208
[C11] "Nonlinear pulsed pressure field from focused rectangular apertures: experimental and numerical simulation results", T. Kujawska, J. Wójcik, A. Nowicki, Proceedings of the 2005 IEEE-UFFC IUS, Rotterdam 2005,Vol.4, CD. pp: 1992 - 1995, DOI: 10.1109/ULTSYM.2005.1603267
[C12] "Multitone nonlinear coding", A. Nowicki, J. Wójcik, and W. Secomski, Proceedings of the 2005 IEEE IUS, Rotterdam 2005, Vol. 2, pp. 1420 - 1423, CD, DOI: 10.1109/ULTSYM.2005.1603121
[C13] “A Novel Method for Characterization of Nonlinear Propagation and Spatial Averaging Effects for Ultrasound Imaging Systems”, E. G. Radulescu; J. Wojcik; P. A. Lewin; A. Nowicki, 2003 IEEE 29th Annual Proceedings of Bioengineering Conference Symposium, Trenton USA, April 2003, 2003, pp. 67 - 68, DOI: 10.1109/NEBC.2003.1215995
[C14] “A Novel Method for Characterization of Nonlinear Propagation and Spatial Averaging Effects for Ultrasound Imaging Systems”, E. G. Radulescu; J. Wojcik; P. A. Lewin, A. Nowicki, 2002 IEEE Ultrasonics Symposium Proceedings, Munik 2002, Vol.2, pp. 1153 - 1156, 2002, DOI: 10.1109/ULTSYM.2002.1192498
[C15] "32 MHz Doppler assessment for streaming measurements", A. Nowicki, W. Secomski, J. Wojcik,1996 IEEE IUS Proceedings, Year: 1996, Vol. 2, pp: 995 - 998 DOI: 10.1109/ULTSYM.1996.584158
[C16] “Temperature Fields in Soft Tissue during LPUS Treatment: Numerical Prediction and Experimental Results” Kujawska T., Wojcik J., Nowicki A, 9Th International Symposium on Therapeutic Ultrasound , Volume 1215, AIP Conference proceedings, ISBN: 978-0-7354-0762-6, 2010, pp.353-358
[C17] "A New Theoretical Basis for Numerical Simulations of Nonlinear Acoustic Fields", J. Wójcik, 15th International Symposium on Nonlinear Acoustics, Gottingen, Germany 1-4 sept 1999, AIP Conf. proceed. of ISNA 15, New York, Vol. 524, pp.141-144. http://dx.doi.org/10.1063/1.1309191
[C18] "Computing and measuring nonlinear propagation effects by means of PVDF and electromagnetic hydrophones", L. Filipczyński, T.Kujawska, J. Wójcik, 15th International Symposium on Nonlinear Acoustics, Gottingen, Germany SEP 01-04, 1999, 1999, ISBN: 1563969459, AIP Conference proceedings of ISNA 15, New York,Vol.524,pp.121-124. http://dx.doi.org/10.1063/1.1309186
[C19] "Comparison of experimental results and numerical calculations of ultrasonic waves scattering on a model of the artery", J. Wójcik, T. Powałowski, Z. Trawiński, 19th International Congress on Acoustics ICA, Madrid, 2-7 September 2007, Special Issue of the journal Revisita de Acustica, vol. 38, 2007,pp.3-4 ISBN 84-87985-12-2
other conference papers
[44] "Evaluation of Left Ventricle Phantom by Ultrasound and Multislices Computer Tomography Imaging", Trawiński Z, Wójcik J, Nowicki A., Balcerzak A., FORUM ACOUSTICUM 2014 European Acoustical Association joined with 61st Open Seminar on Acoustics and Polish Acoustical Society -Acoustical Society of Japan special session stream, 7-12 September, Kraków, ISSN 2221-3767 for CD., ISBN 987-83-61402-28-2 for Book of Abstract.
[43] "Cumulative Method of Image Reconstruction in Synthetic Aperture. Experimental Results" Wójcik J., Trots I., Lewandowski M., Nowicki A., 59-th OPEN SEMINAR ON ACOUSTIC, Boszkowo 2012, ISBN 978-83-934600-0-7, 277-280
[42] "Example of structure modeling and analysis of ultrasound scattering for trabecular bone", J.Wojcik, J. Litniewski, A. Nowicki, 10 Congress of French Acoustic, Lyon,12-16, April, 2010, ISBN: 978-2-9521105-7-0, SFA-CD.
[41] "Heating of tissues by pulsed focused ultrasound to stimulate enhanced HSPs expression" Kujawska T., Wójcik J., Nowicki A, Proceedings of the 14th International Conference on Biomedical Engineering, Kaunas University of Technology, Technologija, 2010, pp.4-9.
[40] "Annular array transducers and matched amplifier for therapeutic ultrasonography", W.Secomski, A. Nowicki, J. Wójcik, M. Walczak, R. Tymkiewicz, Materiały konferencyjne 57 Otwartego Seminarium z Akustyki, Gliwice 20-24.09.2010,pp.169-171
[39] "Temperature Fields in Soft Tissue during LPUS reatment: Numerical Prediction and Experiment Results, Proceedings of the 9th International Symposium on Therapeutic Ultrasound" T.Kujawska, J. Wójcik, A. Nowicki, Aix Provance, France, September 2009., pp. 71-76,
[38] "Temperature Fields In Soft Tissue During Neurodegenerative DiseasesTreatment", T.Kujawska, J. Wójcik, A.Nowicki, Proceedings of the 13th International Conference of Biomedical Engineering, Technologija, Kaunas University of Technology, 109-115, 2009.
[37] "Prediction of temperature increase in soft tissue during hyperthermia ",T. Kujawska, J. Wójcik, A. Nowicki, proceedings of the conference Biomedical Engineering Kaunas University of Technology 23,24 October 2008,pp. 175-178
[36] "Harmonic Imaging Using Two-Tone Coded signals", A. Nowicki, J. Wójcik, T. Kujawska Proc. Of International Conference Biomedical Engineering, Kaunas, 25,26 October 2007, pp.216-223
[35] "Modelowanie badań grubości ściany tętnicy", T. Powałowski, J. Wójcik, Z. Trawiński, Materiały z 54 Otwartego Seminarium z Akustyki OSA'2007, Rzeszów-Przemyśl, 10-14. 09.2007, pp.96-97
[34] "Scattering of Ultrasonic Wave on a Model of the Artery", J. Wójcik, T. Powałowski, R. Tymkiewicz, A. Lamers, Z. Trawiński, Proceedings of the 53-th Open Seminar from the Acoustic, Kraków - Zakopane 11-15 September 2006, ISBN 83-916590-9-7, pp129-136
[33] "New approach to 3D and 4D numerical solutions of the equations of nonlinear acoustics", J. Wójcik, T. Kujawska, A. Nowicki, Conference proceedings - Computer added Metrology , tom III, pp. 11 – 18, Waplewo, Poland 2005.
[32] "Nonlinear pulsed ultrasound fields from focused rectangular transducers: measurements and fast 4D simulations", T. Kujawska, J. Wójcik, A. Nowicki, Proceedings of the 9th International Conference on Biomedical Engineering, Technologija, Kaunas 2005, pp.194-201.
[31] "Nonlinear propagation of the ultrasonic beam versus parameters of absorbing medium", Kujawska T., Wójcik J., Proceedings of the 51th Open Seminar from the Acoustic, OSA’2004, Gdańsk-Sobieszewo,Poland, 2004, pp.299 - 302
[30] "Nonlinear properties of tissues", Kujawska T., Wójcik J., Proceedings of the Workshop on Ultrasound in Bio-measurements, Diagnostics and Therapy, Centre of Excellence for Applied Biomedical Modelling and Diagnostics, Abiomed, Gdańsk-Sobieszewo September 2004, pp. 173-182
[29] ”A new method for determination of the acoustic nonlinearity parameter B/A in multi layer biological media, Kujawska T., Wójcik J., Filipczyński L., Etienne J., Proceedings of the 5th World Congress on Ultrasonics WCU 2003, 7-10 September, Paris, 2003, pp.81-84. (also CD)
[28] ”High frequency range pulses propagation in the solid- liquid structure”, Kujawska T., Filipczyński L., Wójcik J., Conference proceedings of the 50th Open Seminar from the Acoustic, Acoustic OSA’2003, Szczyrk-Gliwice, 2003, pp.249-252
[27] ”A new numerical method for determination of the acoustic nonlinearity parameter B/A in two-layer structures”, Kujawska T., Wójcik J., Filipczyński L., Etienne J., Proceedings of 6th International Conference on Biomedical Engineering, Kaunas University of Technology, pp. 219-222 , October 2003
[26] ”Advances in characterization of ultrasound imaging systems” J. Wójcik, E. Radulescu, Wójcik, E. Radulescu , P.A. Lewin, A. Nowicki, Ultrasonografia Nr 8,p.27, 2002
[25] ”Nonlinear and linear acoustic properties of a tissue mimicking material tofu”, T. Kujawska, L. Filipczyński, J. Wójcik, J. Szelążek, R. Tymkiewicz, Proceedings of International Conference of Biomedical Engineering, Kaunas University of Technology, October 2002, pp.110-114,
[24] "Nonlinear and linear acoustic properties of a tissue mimicking material tofu", T.Kujawska, L. Filipczyński, J. Wójcik, J. Szelążek, R. Tymkiewicz, Conference proceedings of the 49th Open Seminar from the Acoustic, OSA, Stare Jabłonki, Poland, pp. 415-420, 2002
[23] ”Possible temperature effects in ultrasonic microscopy used for biomedical purposes”, L. Filipczyński, J. Wójcik, T. Kujawska, Ultrasonografia No 8, p.115, 2002
[22] "Nonlinear Effects Computed in Gaussian Beams Propagating in Liquids", J. Wójcik , T. Kujawska, L. Filipczynski, 3rd ICA/EAA International Symposium on Hydroacoustics Jurata (Poland) 28-31 May 2001, Hydroacoustics, Annual Journal, Vol.4, ISSN 1642- 1817, Publisher-Polisch Acoustical Society- Gdańsk Division, pp.257-261,
[21] "Nonlinear effects in ultrasonography determined experimentally and numerically" L. Filipczynski, T. Kujawska, R. Tymkiewicz, J. Wójcik, B. Zienkiewicz, Open Seminar from the Acoustic, Rzeszów-Jawor 2000, Conference proceedings of OSA'2000, ISBN 83- 914391-0-0 t.1,2, Vol. I, pp.251-257
[20] "Wideband calibration of PVDF hydrophones by an electromagnetic hydrophone using theoretical spectra of overtones", L. Filipczynski, T. Kujawska, and J. Wójcik, proc. of 137th Regular Meeting of the Acoust.Soc.Am. and 2nd Convention of the Europ. Acoust.Assoc. :Forum Acusticum 99 integrating the 25th German Acoustics DAGA Conference (J.Acoust.Soc.Am.105,No. 2,Pt.2, pp.1228, February 1999)
[19] "Acoustic streaming generated by ultrasonic transducers, measurements by means of 32 MHz Doppler", A. Nowicki, W. Secomski, J. Wójcik, proc. of EAA, International Symposium on Hydroacoustics and Ultrasonic, Gdańsk-Jurata May,1997, pp.337-342
[18] "Possible temperature increases in soft tissues in the case of nonlinear and linear wave propagation", L. Filipczynski, T. Kujawska, R. Tymkiewicz, J. Wójcik, Proceedings of the EAA International Symposium on Hydroacoustics and Ultrasonic, Gdańsk-Jurata May 1997, pp.329-332
[17] "Energy Transport in The Nonlinear Ultrasound Wave. The Effective Coefficients of absorption", J. Wójcik, Proceedings of the XLII Open Seminar from the Acoustic, Warszawa-Białowieża, pp.115-120,1995
[16] ”Ultrasonic field behind various spherical bodies in the case of pulses of short duration time”, L. Filipczynski, T. Kujawska, J. Wójcik, Proceedings of the World Congress on Ultrasonics, Humbolt-Universitat Berlin,Sept.1995, Part 1, pp.93-96
[15] "Temperature increase in two layer obstetric model of tissues for cases of linear and nonlinear continuous wave propagation", L. Filipczynski, J. Wójcik, Procedings of the XIIth Symposium on Hydroacoustics, Gdynia-Jurata Maj 1995,pp.109-116,
[14] "Temperature increase in ultrasonic beams at various insonation times", L. Filipczynski, T. Kujawska, J. Wójcik, Lecture Notes of the ICB seminars biomeasurements, (International Center of Biocybernetics PAN)Warsaw, September 1994, pp.50-54
[13] "Temperatur effects caused by intensive ultrasonic waves used in medical diagnostic technology", L.Filipczynski, T. Kujawska, J. Wójcik, Proceedings of 4th European Conference on Engineering And Medician. Bridging east and west. Warsaw, Poland, May 25-28, 1997, pp.199
[12] "Modeling and analysis of multi-scattering of acoustic waves on complex media: Application to the trabecular bone", Wojcik J, Litniewski J, Nowicki A., 1st International Conference on ultrasonic-based applications: from analysis to synthesis, LISBOA 15th-17th September 2014
[11] "Ultrasonograficzny model lewej komory serca" Z. Trawiński, R. Olszewski, A. Nowicki, J.Wójcik, A. Balcerzak, 58 Otwarte Seminarium z Akustyki OSA 13-16 IX- 2011, Gdańsk-Jurata
[10] "Ultrasound Imaging Using Multitone Nonlinear Coding", A.Nowicki, J. Wójcik, Proceedings of the The Sixteenth International Congress on Sound end Vibration, ICSV 6 Kraków 5-9, July, 2009
[9] "Pulsed nonlinear acoustic fields from clinically relevant sources: numerical calculations and experiments results", J. Wójcik, T. Kujawska, A. Nowicki, LV Otwarte Seminarium Z Akustyki, Wrocław Piechowice 08-12-09-2008
[8] "Comparisin of the Methods Used for Ultrasonic examination of IMT in the wall of Thecarotid artery model", Z.Trawiński, J.Wójcik, LV Otwarte Seminarium Z Akustyki, Wrocław Piechowice 08-12-09-2008
[7] ”Effective algorithm for 3DAnd 4D solutions in nonlinear acoustics ”, Wójcik J., Lewin P.A, Nowicki A., Radulescu E. Conference- Ultrasonics International 2003, Granada 30 June 3 July. Ultrasonics, a publication of Elsevier, Abstract Book,
[6] ”Time gating frequency analysis in ultrasound metrology”, Conference E. Radulescu, P.A. Lewin, A. Nowicki, J. Wójcik, W.A. Berger, Ultrasonics International 2003, Granada 30 June 3 July. Ultrasonics, a publication of Elsevier, Abstract Book.
[5] ”Beyond 40 MHz: Extended continuous frequency response measurement of ultrasonic hydrophone probes using a time domain approach ” E.G. Radulescu, P.A. Lewin, A. Nowicki and J. Wojcik, 2003 IEEE International Ultrasonics Symposium from Oct. 5-8 2003 in Hawaii.
[4] "Numerical and experimental determination of high-nonlinearities in ultrasonic microscopy", J. Wójcik, J. Litniewski, L. Filipczyński, 17th International Congress on Acoustics, Rome, September 2-7,2001
[3] "Temperature Distributions Generated by Focused Ultrasonic Beams in Linear and Nonlinear Propagation", J. Wójcik, L. Filipczynski, T. Kujawska, Proceedings of XV Symposium on Hydroacoustics, Jurata, 26-29 maj 1998, pp.163-168
[2] "Nonlinear effects of Ultrasonic Focused Beams of High Intensity Measured by means of PVDF and Electromagnetic Hydrophones", L. Filipczynski, J. Etienne, T. Kujawska, G. Łypacewicz, W.Secomski, R.Tymkiewicz, J. Wójcik, Proceedings of the 47th ICB Seminar Ultrasound in Biomeasurements, Diagnostics and Therapy, Warsaw, 1-5 September 1998.
[1] "Temperatureffekte in ultraschalldiagnostischen Bundeln", L. Filipczynski, T. Kujawska, J. Wójcik, Proceedings of the 20.Deutsche Jahrestagung fur Akustic. DAGA 94. Technische Hochschule Dresden, 76,1994.
