The effect of dynamic focusing of the beam on the acoustic field distribution inside the ultrasonic ring array

• Autorzy: Staszewski Wiktor , Gudra Tadeusz
• Języki publikacji: EN

Abstrakty

EN

This paper presents the analysis of readings acquired from the ultrasonic ring array used in tomography for the diagnosis of female breast tissue. In addition, this paper also presents the results for the acoustic field distribution simulation, acquired through a method of summing up all acoustic fields generated by each of the elementary transducers of the ring array. The change in acoustic field pressure level when changing activation frequency (2 MHz, 3MHz, 4MHz) of the elementary ultrasonic transducers for the sector consisting of 32 and 64 ultrasonic transducers was studied. By changing the time of activation of individual transducers, a change in the natural position of the focus inside the ultrasonic ring array was observed. For the sector consisting of 32 ultrasonic transducers the relation between the echo coming from the wires of the wire pattern and the level of noise and distortion on the ultrasonographic image for different locations of the focus of the central transducers was studied. The results were compared with the simulations of the acoustic field, which were conducted using MATLAB software. This research is the continuation of studies [13, 14] aimed at choosing the optimal focus and number of transducers in ultrasonic ring array with the goal of receiving the best possible quality of images of cross-sections of the female breast.

Słowa kluczowe

EN

ultrasonic ring array; acoustic field distribution; dynamic focusing of ultrasonic beam

PL

pierścieniowa głowica ultradźwiękowa; rozkład pola akustycznego; ogniskowanie wiązki ultradźwiękowej dynamiczne

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2019
• Tom: Vol. 30, nr 1
• Strony: art. no. 2019106
• Opis fizyczny: Bibliogr. 14 poz., 1 il., 1 rys., wykr.

Twórcy

autor

Staszewski Wiktor

• Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław
• T. Marciniak Lower Silesian Specjalist Hospital - Emergency Medicine Centre, Gen. Augusta Emila Fieldorfa 2, 54-049 Wrocław

autor

Gudra Tadeusz

• Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław

Bibliografia

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• 2. F. A. Duck, Physical Properties of Tissue - A Comprehensive Reference Book, Academic Press London 1990.
• 3. N. Duric, P. Littrup, L. Poulo et al., Detection of breast cancer with ultrasound tomography: first results with the Computed Ultrasound Risk Evaluation (CURE) prototype, Med. Phys., 34(2) (2007) 773 - 785.
• 4. N. Duric, P. Littrup, S. Schmidt et al., Breast imaging with the SoftVue imaging system: first results, In: J. G. Bosch, M. M. Doyley (Eds.), Medical Imaging: Ultrasonic Imaging, Tomography, and Therapy, Proc of SPIE.SPIE, p. 8675 (2013) 86750K-1-8.
• 5. R. Entrekin, P. Jackson, J. R. Jago, B. A. Porter, Real Time Spatial Compound Imaging in Breast Ultrasound: Technology and Early Clinical Experience, Medica-Mundi, 43(3) (1999) 35 - 43.
• 6. T. Gudra, K. Opieliński, The ultrasonic probe for investigating of internal object structure by ultrasound transmission tomography, Ultrasonics, 44 (2006) e679 - e683.
• 7. T. Gudra, K. Opieliński, The multi-element probes for ultrasound transmission tomography, Journal de Physique IV, 137 (2006) 79 - 86.
• 8. T. Gudra, K. J. Opieliński, Sposób wizualizacji struktury wewnętrznej ośrodka i urządzenie do realizacji tego sposobu, Patent, Polska, Nr 210202.
• 9. R. Jirik, I. Peterlík, N. Ruiter et al., Sound-speed image reconstruction insparseaperture 3-D ultrasound transmission tomography, IEEE Trans. Ultrason. Ferroelectr. Freq. Control, 59(2) (2012 ) 254 - 264.
• 10. V. Z. Marmarelis, J. Jeong et al., High-resolution 3-D imaging and tissue differentiation with transmission tomography, Acoust. Image, 28 (2007) 195 - 206.
• 11. K. J. Opieliński, Application of Transmission of Ultrasonic Waves for Characterization and Imaging of Biological Media Structures, Printing House of Wroclaw University of Science and Technology, Wroclaw 2011 [in Polish].
• 12. K. J. Opielinski, P. Pruchnicki, T. Gudra, J. Majewski, Full angle ultrasound spatial compound imaging. In: Proceedings of 7th Forum Acusticum 2014 Joined with 61st Open Seminar on Acoustics and Polish Acoustical Society -Acoustical Society of Japan Special Session Stream [CD-ROM], Krakow: European Acoustics Association (ISSN 2221-3767), 2014.
• 13. W. Staszewski, T. Gudra, K. J. Opieliński, The acoustic field distribution inside the ultrasonic ring array, Archives of Acoustics, 43(3) (2018) 455 - 463.
• 14. W. Staszewski, T. Gudra, K. J. Opieliński, The effect of dynamic beam deflection and focus shift on the acoustic field distribution inside the ultrasonic ring array, Archives of Acoustics, 2019 (article submitted to the editorial office).

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).