Interleaved ²³Na/¹H MRI of the human heart at 7 T using a combined ²³Na/¹H coil setup and ¹H parallel transmission.

ABSTRACT:

Purpose

To evaluate the feasibility of interleaved ²³Na/¹H cardiac MRI at 7 T using ¹H parallel transmission (pTx) pulses.

Methods

A combined setup consisting of a ²³Na volume coil and two ¹H transceiver arrays was employed and the transmit and receive characteristics were compared in vitro with those of the uncombined radiofrequency coils. Furthermore, the implemented interleaved ²³Na/¹H pTx sequence was validated in phantom measurements and applied to four healthy subjects. For the latter, three customized ¹H excitation pulses (universal and individual phase shims (UPS/IPS) and individual 4kT pulses (4kT)) were employed in the interleaved ²³Na/¹H pTx sequence and c

SUBMITTER: Ruck L 

PROVIDER: S-EPMC12021321 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature