Improved cortical bone specificity in UTE MR Imaging.

ABSTRACT:

Purpose

Methods for direct visualization of compact bone using MRI have application in several "MR-informed" technologies, such as MR-guided focused ultrasound, MR-PET reconstruction and MR-guided radiation therapy. The specificity of bone imaging can be improved by manipulating image sensitivity to Bloch relaxation phenomena, facilitating distinction of bone from other tissues detected by MRI.

Methods

From Bloch equation dynamics, excitation pulses suitable for creating specific sensitivity to short-T₂ magnetization from cortical bone are identified. These pulses are used with UTE subtraction demonstrate feasibility of MR imaging of compact bone with positive contrast.

Results

MR images of bone structures are acquired with contrast similar to that observed

SUBMITTER: Johnson EM 

PROVIDER: S-EPMC5040625 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature