Comparison between 8- and 32-channel phased-array receive coils for in vivo hyperpolarized ¹³ C imaging of the human brain.

ABSTRACT:

Purpose

To compare the performance of an 8-channel surface coil/clamshell transmitter and 32-channel head array coil/birdcage transmitter for hyperpolarized ¹³ C brain metabolic imaging.

Methods

To determine the field homogeneity of the radiofrequency transmitters, B₁ + mapping was performed on an ethylene glycol head phantom and evaluated by means of the double angle method. Using a 3D echo-planar imaging sequence, coil sensitivity and noise-only phantom data were acquired with the 8- and 32-channel receiver arrays, and compared against data from the birdcage in transceiver mode. Multislice frequency-specific ¹³ C dynamic echo-planar imaging was performed on a patient with a brain tumor for each hardware configuration following injection of

SUBMITTER: Autry AW 

PROVIDER: S-EPMC6612511 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature