Measurement of biological tissue properties using the ultrasound method

• Autorzy: Szustakowski M. , Jodłowski L. , Piszczek M.
• Języki publikacji: EN

Abstrakty

EN

The elastic properties and velocity of acoustic sound propagation in soft tissues, permits applying the liquid model in research. In regard to the low level of ultrasound power admissible in research in vivo, a new method, implementing quasi-continuous wave, was proposed. The base for determination of the medium parameters, is utilising the conversion of receiver signal to digital form and counting the phase of signal numerically. Presented method was implemented in monitoring the condition of brain, and it gives the possibility to detect changes of density on level 50 ppm, and changes of temperature 0,02oC with medium power over 100 times less then the admissible. That method, in regard to the measurement set-up's simplicity and high accuracy, can find implementation in other technical solutions and scientific research.

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2001
• Tom: Vol. 4
• Strony: 225--230
• Opis fizyczny: Bibliogr. 11 poz., rys.. tab.

Twórcy

autor

Szustakowski M.

• Intitute of Optoelectronics, Military University of Technology, Kaliskiego str., 00-908 Warsaw, Poland

autor

Jodłowski L.

• Intitute of Optoelectronics, Military University of Technology, Kaliskiego str., 00-908 Warsaw, Poland

autor

Piszczek M.

• Istitute of Basis Electronics , Military University of Technology, Kaliskiego str., 00-908 Warsaw, Poland

Bibliografia

• 1. J. Obraz: Ultrasound in measurement technique. Wydawnictwa Naukowo Techniczne. Warszawa 1981, (in polish)
• 2. J. Wehr : Measurements the velocity and attenuation of ultrasound waves. PWN Warszawa 1972, (in polish)
• 3. M. Aleksiejuk, S. Nadolski, W. Zbieranowski " Set-up for measurements small changes of acoustic waves velocity Archives of Acoustics 10,4, 433-438. Warszawa 1975, (in polish)
• 4. Płatek: Electromagnetic telemeters and tachymeters in geodesy. PPWK Warszawa - Wrocław 1991, (in polish)
• 5. L. Jodłowski: Measurements of phase of harmonic signal with implementation low frequency. Proceedings of 27th Wintr School On Molecular And Quantium Acoustics, Ustroń 23-27.02.1998.
• 6. M. Szustakowski, L. Jodłowski, M. Piszczek: Measurements of changes of phase velocity in a fluid using digital signal processing. Proceedings of 27th Wintr School On Molecular And Quantum Acoustics. Ustroń, Feb. 1998.
• 7. M. Szustakowski, L. Jodłowski, M. Piszczek : Passage time measurement of medium probe signal with. the use of phase method with quasi-continuous wave. Proceedings of 28 th Wintr School On Molecular And Quantum Acoustics. Ustroń, Feb. 1999.
• 8. M. Szustakowski, L. Jodłowski, M. Piszczek: Analysis of measurement possibilities of long bulk wave for technical application. Proceedings of 28 th Wintr School On Molecular And Quantum Acoustics. Ustroń, Feb 1999.
• 9. M. Piszczek: Verification of method of passage time measurement quasi-continuous wave with the use of phase method. Proceedings of 29th Wintr School On Molecular And Quantum Acoustics. Ustroń, Feb 2000. (accepted to print ).
• 10. W. Marczak: Water as reference medium in measurements the velocity of ultrasound in liquids. Molecular and Quantum Acoustics, tom 17. Warsaw 1996.
• 11. M. Szustakowski, L. Jodłowski, M. Piszczek : First expirances of implementation ultrasound to registration of changes brain density. I Interdyscyplinarne Forum Udarowe - Proceedings Wrocław, Sept. 1998, (in polish).