Comprehensive Study on Decoupling Networks for 7 Tesla MRI based on Reactive Load Parasitic-Element

Majlesi Journal of Electrical Engineering

مقاله 6، دوره 14، شماره 3، آذر 2020، صفحه 53-61   

نوع مقاله: Review Article

شناسه دیجیتال (DOI): 10.29252/mjee.14.3.6

نویسندگان

Sanaa Salama^{* 1}؛ Ashraf Abuelhaija²؛ Tareq Baldawi³؛ Samer Issa³

¹Department of Telecommunication Engineering, Arab American University, Jenin, Palestine.

²Department of Electrical Engineering, Princess Sumaya University for Technology, Amman, Jordan.

³Department of Electrical Engineering, Applied Science Private University, Amman, Jordan.

چکیده

This work presents and evaluates the integrating of decoupling networks in MRI systems at 7 Tesla magnetic field strength. The parasitic element is reactive loaded. Four different cases of reactive loads are considered: capacitive load, inductive load, open circuited, and short-circuited loads are considered. The idea behind this technique is to reduce or even eliminate the effect of mutual coupling between the RF coil elements in magnetic resonance imaging (MRI)system. Two rectangular loops are used to compose a planar phased array. This structure is designed and optimized in CST at the Larmor frequency of 298.3 MHz corresponding to the 7 Tesla MRI system.

کلیدواژه‌ها

Decoupling Network (DN)؛ Matching Network (MN)؛ Parasitic-Element؛ Capacitive & Inductive Load؛ Open and Short-Circuited Load

مراجع

[1] D. K. Sodickson, and W. J. Manning, “Simultaneous Acquisition of Spatial Harmonics (SMASH): Fast Imaging with Radiofrequency Coil Arrays,” Magn. Reson. Med., pp. 591–603, Vol. 38, No. 4, Oct. 1997.

[2] P. B. Roemer, W. A. Edelstein, C. E. Hayes, S. P. Souza and O. M. Mueller, “The NMR Phased,” Magn. Reson. Med., pp. 192–225, Vol. 16, No. 2, Nov.1990.

[3] M. Maunder and et al., “Stray Capacitance Between Magnetic Resonance Imaging Coil Elements: Models and Application to Array Decoupling,” IEEE Transactions on Microwave Theory and Techniques, Vol. 61, No. 12, December 2013.

[4] J. C. Coetzee, and Y. Yu, “Closed-form design equations for decoupling networks of small,” Electronics Letters, Vol. 44, No. 25, Dec. 2008.

[5] P. T. Chua, and J. C. Coetzee, “Microstrip decoupling networks for low order multi-port arrays with reduced element spacing”, Microwave and Optical Technology Letters, pp. 592-597, 2005.

[6] S. Salama, and K. Solbach, “Design of decoupling network for monopole four square array antenna for multi-beam applications,” LAPC 2013, Loughborough, UK, Nov. 2013

[7] K. Lau, and J. B. Andersen, “Simple and efficient decoupling of compact arrays with parasitic scatterers,” IEEE Transactions on Antennas and Propagation, Vol. 60, No. 2, February 2012.

[8] S. Salama, and K. Solbach, “Parasitic Elements Based Decoupling Technique for Monopole Four Square Array Antenna”, European Microwave Conference EuMC2014, Rome, Italy, October 2014.

[9] S. Salama, “Reactive-Element Based Decoupling Network for a Two Element MRI Phased Array”, Journal of King Saud University Engineering Sciences JKSU, May 2018. (accepted).

[10] S. Salama and A. Abuelhaija, “Parasitic-Element Based Decoupling Network for a Two Element MRI Phased Array,” JEEIT 2019, Amman, Jordan, April. 2019.

[11] S. Salama, “Design of a Rectangular Loop-Shape RF Coil for 7-Tesla Magnetic Resonance Imaging,” APMC 2017, Kuala Lumpur, Malaysia, Nov. 2017.

[12] M. Pozar D. M., Microwave Engineering. Hoboken, NJ, USA: Wiley, 2005.