3D Ultrasound Shear Wave Elastography for Musculoskeletal Tissue Assessment Under Compressive Load: A Feasibility Study

TL;DR

This study demonstrates the feasibility of using 3D ultrasound shear wave elastography to assess musculoskeletal tissue properties under load, addressing previous limitations in full-limb analysis and measurement bias.

Contribution

It introduces a method for volumetric elastography of limbs under load, enabling more accurate 3D tissue property assessment for biomechanical modeling.

Findings

Successful 3D imaging of limbs under compression

Potential for improved biomechanical tissue modeling

Feasibility of volumetric elastography demonstrated

Abstract

Given its real-time capability to quantify mechanical tissue properties, ultrasound shear wave elastography holds significant promise in clinical musculoskeletal imaging. However, existing shear wave elastography methods fall short in enabling full-limb analysis of 3D anatomical structures under diverse loading conditions, and may introduce measurement bias due to sonographer-applied force on the transducer. These limitations pose numerous challenges, particularly for 3D computational biomechanical tissue modeling in areas like prosthetic socket design. In this feasibility study, a clinical linear ultrasound transducer system with integrated shear wave elastography capabilities was utilized to scan both a calibrated phantom and human limbs in a water tank imaging setup. By conducting 2D and 3D scans under varying compressive loads, this study demonstrates the feasibility of volumetric ultrasound shear wave elastography of human limbs. Our preliminary results showcase a potential method for evaluating 3D spatially varying tissue properties, offering future extensions to computational biomechanical modeling of tissue for various clinical scenarios.