Work

Should the mechanical index be revised for ARFI imaging?

Year: 2012

Type: conference-paper

Abstract: The mechanical index (MI) quantifies the likelihood that exposure to diagnostic ultrasound will produce an adverse biological effect by a nonthermal mechanism. The current formulation of the MI is based on inertial cavitation thresholds in two liquids, water and blood, as calculated by a formalism assuming very short pulse durations. Although tissue contains a high proportion of water, it is not a liquid but a viscoelastic solid. Further, acoustic radiation force impulse imaging employs high-intensity pulses up to several hundred acoustic periods long. The effect of these differences was studied in water, blood and five representative tissues.

Source: IEEE International Ultrasonics Symposium

DOI: 10.1109/ultsym.2012.0005

Authors: Charles C. Church, Cecille Labuda, Kathryn Nightingale

Institutions: University of Mississippi, Duke University

Language: English

Topic: Ultrasound and Hyperthermia Applications

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Good health and well-being

Open Access status: green

Funders: National Cancer Institute, National Institute of Biomedical Imaging and Bioengineering