Ultrasound Shear Wave Elastography Overview
Explore the scope, background, and design choices of ultrasound shear wave elastography. Learn how ultrasound can measure tissue stiffness and elasticity through shear wave speed. Discover the proposed SR template for elastography of organs like the liver, breast, and prostate, and understand the process of drawing ROIs to analyze shear wave speed and elasticity values. Dive into example result tables showcasing the measurement data for a comprehensive understanding.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
Supplement 227: Ultrasound Shear Wave Elastography SR Working Group 12: Ultrasound
Overview Scope: Ultrasound Shear Wave Elastography MR Elastography and Ultrasound Strain Elastography are out of scope An SR template is proposed for elastography of organs/tissues such as liver, breast, prostate 2
Background Ultrasound can measure the speed at which an induced shear wave propagates through tissue (Shear Wave Speed in m/s). SWS depends on the stiffness of the tissue and thus can be converted into an estimated Elasticity in kPa. SWS elastography typically involves drawing 3-12 ROIs (usually circles or squares) at differing depths on the acquired images. A report records the mean and Standard Deviation values for SWS and Elasticity within each ROI, and then computes specific summary statistics across the ROIs.
Design Choices Use existing SR SOP Classes - Follows the precedent of most other Ultrasound reports Add a general Ultrasound Report root template - All existing Ultrasound roots were very application specific - Based on Vascular root (which several vendors already use) Add an Ultrasound Elastography sub-Template Strain-based Elastography will be a separate report section added in another CP/Supplement 4
Example Result Tables ROI # Shear Wave Speed (m/s) Elasticity (kPa) ROI Mean Dispersion (m/s/kHz) ROI Depth (cm) ROI Mean ROI SD ROI SD ROI Mean ROI SD 1 2 R Summary Statistics Mean SD Median IQR IQR/Median Shear Wave Speed (m/s) Elasticity (kPa) Dispersion (m/s/kHz)
