Should the mechanical index be revised for ARFI imaging?

Published

Journal Article

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.

Full Text

Duke Authors

Cited Authors

  • Church, CC; Labuda, C; Nightingale, K

Published Date

  • October 2012

Published In

Volume / Issue

  • 2012 /

Start / End Page

  • 17 - 20

PubMed ID

  • 24533174

Pubmed Central ID

  • 24533174

International Standard Serial Number (ISSN)

  • 1948-5719

Digital Object Identifier (DOI)

  • 10.1109/ULTSYM.2012.0005

Language

  • eng