K. A. Wear, “Autocorrelation and Cepstral Methods for Measurement of Tibial Cortical Thickness,” IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, Vol. 50, No. 5, 2003, pp. 655-660. doi:10.1109/TUFFC.2003.1209552
 G. Seidel, C. Algermissen, A. Christoph, L. Claassen, M. Vidal-Langwasser and T. Katzer, “Harmonic Imaging of the Human Brain: Visualization of Brain Perfusion with Ultrasound,” Stroke, Vol. 31, No. 1, 2000, pp. 151-154. doi:10.1161/01.STR.31.1.151
 F. Vignon, J.-F. Aubry, M. Tanter, A. Margoum and M. Fink, “Dual-Arrays Brain Imaging Prototype: Experimental In Vitro Results,” IEEE International Ultrasonics Symposium, Vol. 1, 18-21 September 2005, pp. 504-507.
 P. J. White, G. T. Clement and K. Hynynen, “Transcranial Ultrasound Focus Reconstruction with Phase and Amplitude Correction,” IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, Vol. 52, No. 9, 2005, pp. 1518-1522. doi:10.1109/TUFFC.2005.1516024
 Y. Hata, S. Kobashi, K. Kondo, Y. T. Kitamura and T. Yanagida, “Transcranial Ultrasonography System for Visualizing Skull and Brain Surface Aided by Fuzzy Expert System,” IEEE Transsactions on Systems, Man and Cybernetics, Vol. 35, No. 6, 2005, pp. 1360-1373. doi:10.1109/TSMCB.2005.855593
 M. Kimura, S. Kobashi, K. Kondo, Y. Hata, Y. T. Kitamura and T. Yanagida, “Fuzzy Ultrasonic Imaging System for Visualizing Braine Surface under Skull Considering Ultrasonic Refraction,” Proceedings of 2006 IEEE International Conference on Systems, Man, and Cybernetics, Montreal, 7-10 October 2007, pp. 3790-3794.
 Y. Ikeda, S. Kobashi, K. Kondo and Y. Hata, “Fuzzy Ultrasonic Array System for Locating Screw Holes of Intramedullary Nail,” Proceedings of 2006 IEEE International Conference on Systems, Man, and Cybernetics, Montreal, 7-10 October 2007, pp. 3428-3432.
 M. D. McDonnell and D. Abbott, “What Is Stochastic Resonance? Definitions, Misconceptions, Debates, and Its Relevance to Biology,” PLoS Computational Biology, Vol. 5, No. 5, 2009, p. e1000348. doi:10.1371/journal.pcbi.1000348
 P. H?nggi, “Stochastic Resonance in Biology—How Noise Can Enhance Detection of Weak Signals and Help Improve Biological Information Processing,” ChemPhys-Chem, Vol. 3, No. 3, 2002, pp. 285-290. doi:10.1002/1439-7641(20020315)3:3<285::AID-CPHC285>3.0.CO;2-A
 L. Ke, X. Jianping, K. Dongmei and Z. Na, “A Method of Evaluating the Signal to Noise Ratio Based on Duffing Time Series,” Proceedings of the 2009 International Conference on Measuring Technology and Mechatronics Automation,” Zhangjiajie, Vol. 1, 11-12 April 2009, pp. 399-402.
 G. Hiramatsu, Y. Ikeda, S. Imawaki, Y. T. Kitamura, T. Yanagida, S. Kobashi and Y. Hata, “Trans-Skull Imaging System by Ultrasonic Array Probe,” Proceedings of 2009 IEEE International Conference on Systems, Man and Cybernetics, 11-14 October 2009, pp. 1096-1101. doi:10.1109/ICSMC.2009.5345974
 N. Yagi, Y. Oshiro, O. Ishikawa, Y. Hata, Y. T. Kitamura and T. Yanagida, “YURAGI: Analysis for Trans-Skull Brain Visualizing by Ultrasonic Array Probe,” Proceedings of SPIE Defence, Security and Sensing, 2011, pp. 805813-1-9.
 N. Yagi, Y. Oshiro, O. Ishikawa, G. Hiramatsu, Y. Hata, Y. Kitamura and T. Yanagida, “Data Synthesis for Trans-Skull Brain Imaging by 0.5 and 1.0MHz Ultrasonic Array Systems,” Proceedings of 2010 IEEE International Conference on Systems, Man and Cybernetics, Istanbul, 10-13 October 2010, pp. 1524-1529. doi:10.1109/ICSMC.2010.5642325
 G. Hiramatsu, S. Kobashi, Y. Hata and S. Imawaki, “Ultrasonic Large Intestine Thickness Determination System for Low Anterior Resection,” Proceedings of 2008 IEEE International Conference on Systems, Man and Cybernetics, Singapore, 12-15 October 2008, pp. 3072-3076. doi:10.1109/ICSMC.2008.4811767
 N. Yagi, Y. Oshiro, T. Ishikawa and Y. Hata, “Human Brain Ultrasound-Mediated Diagnosis in Emergency Medicine and Home Health Care,” Proceedings of the 6th International Conference on Soft Computing and Intelligent Systems and 13th International Symposium on Advanced Intelligent Systems, 20-24 November 2012, pp. 1269-1274. doi:10.1109/SCIS-ISIS.2012.6505270
 N. Yagi, Y. Oshiro, T. Ishikawa, and Y. Hata, “Yuragi Synthesis for Ultrasonic Human brain Imaging,” Journal of Advanced Computational Intelligence and Intelligent Informatics, Vol. 17, No. 1, 2013, pp. 74-82.