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30 May 2001 New 2D ultrasound phased-array design for hyperthermia cancer therapy
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We have designed and evaluated (using computer simulations) several different 2D phased arrays with square elements for deep localized hyperthermia. These array include a 20x20 planar array, a 80x16 cylindrical-section array, and a 16x16 spherical-section array. Also, we have designed a new phased array with circular elements. We used single and multiple focus scanning methods with intensity gain maximization. We found that the array with circular elements is more effective in reducing grating lobes compared to the same array with square elements. The grating lobes were at least 30 dB smaller than the phased array with square elements and intensity gain was at least 1 dB greater. In addition, with equal intensity distribution patterns for rectangular and circular phased arrays, the number of elements in the circular phased array was smaller and its intensity gain was greater than the other arrays.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hasan Sharifi and Hamid Soltanian-Zadeh "New 2D ultrasound phased-array design for hyperthermia cancer therapy", Proc. SPIE 4325, Medical Imaging 2001: Ultrasonic Imaging and Signal Processing, (30 May 2001);

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