Dipole arrays

For precision imaging at ultra-high field, multi-channel arrays of radiative dipole antennas1,2 provide an optimal solution. We offer dipole arrays for different imaging targets. Dipoles have proven to be a good choice to be integrated with high density receive loop arrays for accelerated imaging. Previous solutions have been successfully applied in cardiac imaging3, prostate imaging4, breast imaging5, and brain imaging6. We have extensive experience with safety validation of dipole antennas at ultrahigh field (7T and 10.5T).

Current portfolio of dipole array coils:

Dipole body array
Imaging target: abdomen, heart, prostate
Geometry: flexible leather former
Tx channels: 8
Rx channels: 8-64
Field strengths: 3T, 7T, 10.5T and beyond

Dipole breast array
Imaging target: breast
Geometry: rigid former, prone position
Tx channels: 5, can be modified for single Tx mode
Rx channels: 30
Field strength: 7T and 10.5T (MIRACLE project FETOPEN)

1Raaijmakers, The Fractionated Dipole Antenna: A New Antenna for Body Imaging at 7 Tesla MRM 2016.
2Steensma et al., Optimization and validation of dipole antenna geometry for 10.5T, ISMRM 2018.
3Steensma, An 8‑channel Tx/Rx dipole array combined with 16 Rx loops for high‑resolution functional cardiac imaging at 7T, MAGMA 2018
4Steensma, Comparing Signal-to-Noise Ratio for Prostate Imaging at 7T and 3T, jMRI 2019.
5Krikken et al., Homogeneous B1+ for bilateral breast imaging at 7T using a five dipole transmit array merged with a high density receive loop array, NMR in Biomed 2018.
6Haghnejad, S.A., Flexible dipoles for multitransmit headneck MRI at 7T, eSMRMb 2016