Work

Assessing and improving acoustic radiation force image quality using a 1.5-D transducer design

Year: 2012

Type: article

Abstract: 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 modelbased 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-tonoise ratio when rendered using the 1.5-D ARFI array.

Source: IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control

DOI: 10.1109/tuffc.2012.2360

Authors: A. H. Dhanaliwala, J. A. Hossack, F. W. Mauldin

Institution: University of Virginia

Language: English

Topic: Ultrasound Imaging and Elastography

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

Open Access status: green

Funders: National Heart, Lung, and Blood Institute, National Institute of General Medical Sciences, National Institute of Biomedical Imaging and Bioengineering

Awards: High-Resolution 3D Ultrasound Imaging & Quantification of Murine Cardiac Function, Molecular Targeted, Focused, Ultrasound-Based Delivery of Antiproliferative Drugs, Medical Scientist Training Program, Basic Cardiovascular Research Training Grant