Realistic analytical polyhedral MRI phantoms.

ABSTRACT:

Purpose

Analytical phantoms have closed form Fourier transform expressions and are used to simulate MRI acquisitions. Existing three-dimensional (3D) analytical phantoms are unable to accurately model shapes of biomedical interest. The goal of this study was to demonstrate that polyhedral analytical phantoms have closed form Fourier transform expressions and can accurately represent 3D biomedical shapes.

Methods

The Fourier transform of a polyhedron was implemented and its accuracy in representing faceted and smooth surfaces was characterized. Realistic anthropomorphic polyhedral brain and torso phantoms were constructed and their use in simulated 3D and two-dimensional (2D) MRI acquisitions was described.

Results

Using polyhedra, the Fourier transform of faceted shap

SUBMITTER: Ngo TM 

PROVIDER: S-EPMC4837112 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature