Assessing and Improving Acoustic Radiation Force Image Quality Using a 1.5-D Transducer Design

作者：Dh****iwala Ali H^*; Hossack John A; Mauldin F William Jr

来源：IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2012, 59(7): 1602-1608.

DOI：10.1109/TUFFC.2012.2360

A 1.5-D transducer array was proposed to improve acoustic radiation force impulse (ARFI) imaging signal-to-noise ratio (SNRARFI) and image contrast relative to a conventional 1-D array. To predict performance gains from the proposed 1.5-D transducer array, an analytical model for SNRARFI upper bound was derived. The analytical model and 1.5-D ARFI array were validated using a finite element model-based numerical simulation framework. The analytical model demonstrated good agreement with numerical results (correlation coefficient = 0.995), and simulated lesion images yielded a significant (2.92 dB; p < 0.001) improvement in contrast-to-noise ratio when rendered using the 1.5-D ARFI array.

• 出版日期2012-7