Design and fabrication of PMN-PT based high frequency ultrasound imaging devices integrated into medical interventional tools

TY - GEN

T1 - Design and fabrication of PMN-PT based high frequency ultrasound imaging devices integrated into medical interventional tools

AU - Ssekitoleko, R. T.

AU - Demore, C. E. M.

AU - Cochran, S.

AU - Ng, J. H. G.

AU - Flynn, D.

AU - Desmulliez, M. P. Y.

PY - 2012

Y1 - 2012

N2 - This paper presents the rational for in vivo biopsy and the main technical challenges that must be overcome to realize this application. These include the need to achieve a small array package, the need for high frequency operation for high resolution, and the need for economical manufacturing. An array design is described, with 64 elements at 100 mu m pitch, made with PMN-PT piezocrystal and operating at 15 MHz, to demonstrate resolution of 100 mu m and the advantages of imaging close up. Techniques adopted to reduce the challenges are described, including, for example, spiral winding of a flexible circuit to achieve external connections. Results from prototypes to date include measurement of pulse-echo signals from a 20 MHz single element piezocrystal piezocomposite and first production of a 5 MHz demonstrator device. Further work will focus particularly on the method of interconnection of the flexible circuit to the array, and incorporation of the array within a biopsy needle.

AB - This paper presents the rational for in vivo biopsy and the main technical challenges that must be overcome to realize this application. These include the need to achieve a small array package, the need for high frequency operation for high resolution, and the need for economical manufacturing. An array design is described, with 64 elements at 100 mu m pitch, made with PMN-PT piezocrystal and operating at 15 MHz, to demonstrate resolution of 100 mu m and the advantages of imaging close up. Techniques adopted to reduce the challenges are described, including, for example, spiral winding of a flexible circuit to achieve external connections. Results from prototypes to date include measurement of pulse-echo signals from a 20 MHz single element piezocrystal piezocomposite and first production of a 5 MHz demonstrator device. Further work will focus particularly on the method of interconnection of the flexible circuit to the array, and incorporation of the array within a biopsy needle.

U2 - 10.1109/ULTSYM.2011.0582

DO - 10.1109/ULTSYM.2011.0582

M3 - Conference contribution

SN - 9781457712524

SP - 2345

EP - 2348

BT - 2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS)

PB - IEEE Computer Society

CY - New York

T2 - 2011 IEEE International Ultrasonics Symposium (IUS)

Y2 - 18 October 2011 through 21 October 2011

ER -