  Quasi Static Elasticity Imaging (QSEI) aims to computationally reconstruct
the inhomogeneous distribution of the elastic modulus using a measured
displacement field. QSEI is a well-established imaging modality used in medical
imaging for localizing tissue abnormalities. More recently, QSEI has shown
promise in applications of structural health monitoring and materials
characterization. Despite the growing usage of QSEI in multiple fields,
fully-executable open source packages are not readily available. To address
this, OpenQSEI is developed using a MATLAB platform and shared in an online
community setting for continual algorithmic improvement. In this article, we
describe the mathematical background of QSEI and demonstrate the basic
functionalities of OpenQSEI with examples.
