Modeling and simulation of needle electrical impedance myography in nonhomogeneous isotropic skeletal muscle.

ABSTRACT:

Objective

Needle electrical impedance myography (EIM) is a recently developed technique for neuromuscular evaluation. Despite its preliminary successful clinical application, further understanding is needed to aid interpreting EIM outcomes in nonhomogeneous skeletal muscle measurements.

Methods

The framework presented models needle EIM measurements in a bidomain isotropic model. Finite element method (FEM) simulations verify the validity of our model predictions studying two cases: a spherical volume surrounded by tissue and a two-layered tissue.

Results

Our models show that EIM is influenced by the vicinity of tissue with different electrical properties. The apparent resistance, reactance and phase relative errors between our theoretical predictions and FEM simulatio

SUBMITTER: Luo X 

PROVIDER: S-EPMC9012450 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature