One of our unique products is the 32 channel ASL Head coil. Using 8 independent transmit antennas distributed in 3 dimensions around the head and neck, not only uniform excitation can be obtained, but also at lowest tissue heating.
This coil is suitable for 7T systems and allows for arterial spin labelling.
The design is based on radiative antennas. The transmit is separated from the receiver to get an optimized B1+ per unit of local SAR, while maximizing sensitivity and acceleration.
This extended field of view to the neck provides the possibility of arterial spin labelling (ASL) to image blood volume without contrast agents. Combined with the integrated 32 receivers, this coil allows highest resolution MRI at most efficient scan times. One of the unique features is the flexible housing with visual clearance that assures closest fitting of the receivers to the head while facilitating all different head sizes. This assures uncompromising high sensitivity.
See below for references.
References obtained with this coil or earlier versions:
8. 7T renal MRI challanges and promises. de Boer A., Hoogduin J. et al. ESMRMb 2016
7. Haghnejad AA, Restivo M, Hoogduin H, Gosselink M, Italiaander M, Mollink J, Raaijmakers A, Klomp DWJ. ESMRMb 2015
6.Imaging the Intracranial Atherosclerotic Vessel Wall Using 7T MRI: Initial Comparison with Histopathology. van der Kolk AG, Zwanenburg JJ, Denswil NP, Vink A, Spliet WG, Daemen MJ, Visser F, Klomp DW, Luijten PR, Hendrikse J. AJNR Am J Neuroradiol. 2014 Dec 4
5.Seven-tesla magnetic resonance imaging of atherosclerotic plaque in the significantly stenosed carotid artery: a feasibility study. de Rotte AA, Koning W, Truijman MT, den Hartog AG, Bovens SM, Vink A, Sepehrkhouy S, Zwanenburg JJ, Klomp DW, Pasterkamp G, Moll FL, Luijten PR, Hendrikse J, de Borst GJ. Invest Radiol. 2014 Nov;49(11):749-57.
4.Why do dipole antennas work? A comparison to loop coils as a function of element size. Alexander Raaijmakers, Peter R. Luijten, and Cornelis A.T. van den Berg. ISMRM 2014, 4887.
3.MRI of the carotid artery at 7 Tesla: Quantitative comparison with 3 Tesla. Koning W, de Rotte AA, Bluemink JJ, van der Velden TA, Luijten PR, Klomp DW, Zwanenburg JJ. J Magn Reson Imaging. 2014 Feb 27.
2.High-resolution MRI of the carotid arteries using a leaky waveguide transmitter and a high-density receive array at 7 T. Koning W, Bluemink JJ, Langenhuizen EA, Raaijmakers AJ, Andreychenko A, van den Berg CA, Luijten PR, Zwanenburg JJ, Klomp DW. Magn Reson Med. 2013 Apr;69(4):1186-93.
1.Design of a radiative surface coil array element at 7 T: the single-side adapted dipole antenna. Raaijmakers AJ, Ipek O, Klomp DW, Possanzini C, Harvey PR, Lagendijk JJ, van den Berg CA. Magn Reson Med. 2011 Nov;66(5):1488-97.