Prospective motion correction enables highest resolution time-of-flight angiography at 7T.

ABSTRACT:

Purpose

Higher magnetic field strengths enable time-of-flight (TOF) angiography with higher resolution to depict small-vessel pathologies. However, this potential is limited by the subject's ability to remain motionless. Even small-scale, involuntary motion can degrade vessel depiction, thus limiting the effective resolution. The aim of this study was to overcome this resolution limit by deploying prospectively motion-corrected (PMC) TOF.

Methods

An optical, marker-based, in-bore tracking system was used to update the imaging volume prospectively according to the subject's head motion. PMC TOF was evaluated in 12 healthy, cooperative subjects at isotropic resolution of up to 150 μm. Image quality was assessed qualitatively through reader rating and quantitatively with the av

SUBMITTER: Mattern H 

PROVIDER: S-EPMC5876090 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature