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"Tran, Denis; Kamani, Allaudin; Rohling, Robert N.; Lessoway, Vickie. Adaptive spatial compounding for improving ultrasound images of the epidural space. Medical Imaging 2007: Ultrasonic Imaging and Signal Processing, edited by Stanislav Y. Emelianov, Stephen A. McAleavey   Proceedings of SPIE Volume 6513, 65130W, 2007. http://dx.doi.org/10.1117/12.704225"@en
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