A birdcage transmit, 24-channel conformal receive array coil for sensitive P magnetic resonance spectroscopic imaging of the human brain at 7 T.

Phosphorus (P) magnetic resonance spectroscopic imaging (MRSI) can serve as a critical tool for more direct quantification of brain energy metabolism, tissue pH, and cell membrane turnover. However, the low concentration of P metabolites in biological tissue may result in low signal-to-noise ratio (SNR) in P MRS images. In this work, we present an innovative design and construction of a P radiofrequency coil for whole-brain MRSI at 7 T.

An 8-Channel Transceiver Coil for Carotid Artery Imaging at 7T Using an Optimized Shield Design.

Objective: To design and fabricate a transmit/receive (T/R) radiofrequency (RF) coil array for MRI of the carotid arteries at 7T with optimal shielding to improve transmit performance in parallel transmit (pTx) mode.

Methods: The carotid coil included 8 total RF elements, with left and right subarrays, each consisting of 4 overlapping loops with RF shields. Electromagnetic (EM) simulations were performed to optimize and improve the transmit performance of the array by determining the optimal distance between the RF shield and each subarray.