A transducer array for focusing the ultrasound setting angle

Title & Authors
A transducer array for focusing the ultrasound setting angle
Lee, Sang-sik;

Abstract
The treatment of obesity have been developed various devices for the treatment of obesity, the ultrasound is to be made after the state changes to become easy fat decomposition by heat and vibrations to facilitate the flow of blood and lymph fatty acid released into the blood. There is such ultrasonic transducer array is used in obesity therapy focusing angle of the transducer array and the frequency may have a significant impact on the degradation of fat. In this paper, we set the frequency that reaches the shortest time to a set temperature 27kHz, 1MHz, by applying a transducer with a diameter of 5mm, 10mm, 16mm for the frequency of 3MHz, obtain the wavelength and near the stomach in order to set the frequency of the transducer array, which was set to the focusing angle of the transducer with three contact surfaces. As a result, the time to reach the set temperature was short days when 3MHz frequency, the focusing angle is titrated is $\small{40^{\circ}}$.
Keywords
Transducer array;Obesity treatment device;Frequency;Ultrasonic;Ultrasonic focusing;
Language
Korean
Cited by
References
1.
Salonen, Jukka T., and Riitta Salonen. "Ultrasound B-mode imaging in observational studies of atherosclerotic progression." Circulation 87.3 Suppl (1993): II56-65.

2.
Corretti, Mary C., et al. "Guidelines for the ultrasound assessment of endothelial-dependent flow-mediated vasodilation of the brachial artery: a report of the International Brachial Artery Reactivity Task Force." Journal of the American College of Cardiology 39.2 (2002): 257-265.

3.
Wagner, Robert F., et al. "Statistics of speckle in ultrasound B-scans." Sonics and Ultrasonics, IEEE Transactions on 30.3 (1983): 156-163.

4.
Apfel, Robert E., and Christy K. Holland. "Gauging the likelihood of cavitation from short-pulse, low-duty cycle diagnostic ultrasound." Ultrasound in medicine & biology 17.2 (1991): 179-185.

5.
Gill, Robert W. "Measurement of blood flow by ultrasound: accuracy and sources of error." Ultrasound in medicine & biology 11.4 (1985): 625-641.

6.
Lee,J.S, Cho, S.H. and Kim, Y.Y."Radiation Pattern of Lamb Waves Generated by Circular Magnetostrictive Patch Transducer" Physics Letters, Vol.90, No.5(2010):654-663

7.
Kwon, H. S., Park, S. C., Cho, S. H., Lee, S. S. and Kim, J. Y. "Guided Wave Phased Array for Inspection of Plate Structures" Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 19, No. 1(2009): 56-63

8.
Velichko, A. and Wilcox, P. D. " Guided Wave Arrays for High Resolution Inspection" The Journal of the Acoustical Society of America, Vol. 123, No. 1(2008): 186-196

9.
Fromme, P., Wilcox, P. D., Lowe, M. J. S. and Cawley, P. "On the Development and Testing of a Guided Ultrasonic Wave Array for Structural Integrity Monitoring, Ultrasonics, Ferroelectrics and Frequency Control" IEEE Transactions on, Vol. 53, No. 4(2006): 777-785

10.
Wilcox, P., Lowe, M. and Cawley, P."Omnidirectional Guided Wave Inspection of Large Metallic Plate Structures Using an EMAT Array, Ultrasonics, Ferroelectrics and Frequency Control" IEEE Transactions on, Vol. 52, No. 4(2005): 653-665