Optimization of resolution enhancement compression technique with plane wave imaging

Sébastien Salles (1) , Francois Varray (2) , Yanis Bénane (2) , Olivier Basset (2)

1 ISB NTNU - Department of Circulation and Medical Imaging [Trondheim]
2 Imagerie Ultrasonore

High frame rate imaging became a world-wide use modality. It achieves by coherently coalescing the received radio frequency signal, as low-resolution image, after emitting plane waves. One common way to increase the image quality is to combine multiple low-resolution images, from different insonification angles, into a high-resolution image. However, this compounding technique significantly decrease the frame rate by a factor equal to the number of insonification. In this study, we proposed to increase the image quality in terms of resolution and contrast by using only one plane wave combine with a resolution enhancement compression technique. In comparison with conventional plane wave imaging, the results show a clear improvement of the axial resolution (31%), signal to noise ratio (13%) and contrast to noise ratio (101%). Moreover, an optimization, based on an experimental received signal from one scatterer as a deconvolution signal, is presented. This innovation allows increasing the contrast-to-noise ratio and signal-to-noise ratio of 159% and 29%, respectively in comparison with conventional plane wave imaging.

Mots clés: Signal to noise ratio; Signal resolution; Phantoms; Chirp; Ultrasonic imaging; Image resolution

Domaines: Traitement du signal et de l'image [eess.SP]; Imagerie médicale

Sébastien Salles, Francois Varray, Yanis Bénane, Olivier Basset. Optimization of resolution enhancement compression technique with plane wave imaging. 2016 IEEE International Ultrasonics Symposium (IUS), Sep 2016, Tours, France. ⟨10.1109/ULTSYM.2016.7728751⟩. ⟨hal-01466446⟩