Three-dimensional printing of MRI-visible phantoms and MR image-guided therapy simulation.

ABSTRACT:

Purpose

To demonstrate the use of anatomic MRI-visible three-dimensional (3D)-printed phantoms and to assess process accuracy and material MR signal properties.

Methods

A cervical spine model was generated from computed tomography (CT) data and 3D-printed using an MR signal-generating material. Printed phantom accuracy and signal characteristics were assessed using 120 kVp CT and 3 Tesla (T) MR imaging. The MR relaxation rates and diffusion coefficient of the fabricated phantom were measured and ¹ H spectra were acquired to provide insight into the nature of the proton signal. Finally, T₂ -weighted imaging was performed during cryoablation of the model.

Results

The printed model produced a CT signal of 102 ± 8 Hounsfield unit, and an MR signal ro

SUBMITTER: Mitsouras D 

PROVIDER: S-EPMC5108690 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature