A study on improvement of lateral resolution in synthetic aperture super-resolution ultrasound imaging

Ultrasound imaging is applied to various fields because it is noninvasive and real-time imaging is possible. However, in the field of diagnosis imaging, ultrasound imaging is inferior in resolution to other modalities, so researches to improve resolution are actively conducted. We proposed a method called the SCM (Super resolution FM-Chirp correlation Method) that improves the range resolution based on frequency sweep. In order to improve the frame rate, the SCM was extended to the SA-SCM (Synthetic Aperture-SCM) by incorporating synthetic aperture beamforming using divergent waves in the SCM. However, these methods improve only the range resolution. Therefore, in this study, we aim at high lateral resolution by using F-DMAS (Filtered-Delay Multiply and Sum) of analytic signal representation as the beamforming method.

[1]  K. Thomenius,et al.  Evolution of ultrasound beamformers , 1996, 1996 IEEE Ultrasonics Symposium. Proceedings.

[2]  Yong-jun Zhao,et al.  High resolution wideband DOA estimation based on modified MUSIC algorithm , 2008, 2008 International Conference on Information and Automation.

[3]  Giovanni Magenes,et al.  The Delay Multiply and Sum Beamforming Algorithm in Ultrasound B-Mode Medical Imaging , 2015, IEEE Transactions on Medical Imaging.

[4]  Tibor Tot,et al.  The lobar approach to breast ultrasound imaging and surgery , 2015, Journal of Medical Ultrasonics.

[5]  Juha Ylitalo.  A fast ultrasonic synthetic aperture imaging method: application to NDT , 1996 .

[6]  Kan Okubo,et al.  A novel technique for high resolution ultrasound imaging super resolution FM-Chirp correlation Method (SCM) , 2009, 2009 IEEE International Ultrasonics Symposium.

[7]  Kan Okubo,et al.  High Frame Rate Super Resolution Imaging Based on Ultrasound Synthetic Aperture Scheme , 2015 .

[8]  Shraga Shoval,et al.  Using coded signals to benefit from ultrasonic sensor crosstalk in mobile robot obstacle avoidance , 2001, Proceedings 2001 ICRA. IEEE International Conference on Robotics and Automation (Cat. No.01CH37164).

[9]  Jing Zhu,et al.  Super-Resolution Ultrasound Imaging Based on the Phase of the Carrier Wave Without Deterioration by Grating Lobes , 2018, 2018 24th International Conference on Pattern Recognition (ICPR).

[10]  Andy Hopper,et al.  Broadband ultrasonic location systems for improved indoor positioning , 2006, IEEE Transactions on Mobile Computing.