Name
Title | ||
|---|---|---|
Multi-channel microstrip transceiver arrays using harmonics for high field MR imaging in humans. |
Abstract | ||
|---|---|---|
Radio-frequency (RF) transceiver array design using primary and higher order harmonics for in vivo parallel magnetic resonance imaging imaging (MRI) and spectroscopic imaging is proposed. The improved electromagnetic decoupling performance, unique magnetic field distributions and high-frequency operation capabilities of higher-order harmonics of resonators would benefit transceiver arrays for parallel MRI, especially for ultrahigh field parallel MRI. To demonstrate this technique, microstrip transceiver arrays using first and second harmonic resonators were developed for human head parallel imaging at 7T. Phantom and human head images were acquired and evaluated using the GRAPPA reconstruction algorithm. The higher-order harmonic transceiver array design technique was also assessed numerically using FDTD simulation. Compared with regular primary-resonance transceiver designs, the proposed higher-order harmonic technique provided an improved g-factor and increased decoupling among resonant elements without using dedicated decoupling circuits, which would potentially lead to a better parallel imaging performance and ultimately faster and higher quality imaging. The proposed technique is particularly suitable for densely spaced transceiver array design where the increased mutual inductance among the elements becomes problematic. In addition, it also provides a simple approach to readily upgrade the channels of a conventional primary resonator microstrip array to a larger number for faster imaging. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/TMI.2011.2166273 | IEEE Trans. Med. Imaging |
Keywords | Field | DocType |
human head parallel imaging,transceivers,harmonics,resonant elements,resonators,head,ultrahigh field parallel mri,primary-resonance transceiver designs,first harmonic resonators,unique magnetic field distributions,g-factor,decoupling,parallel imaging,decoupling circuits,image reconstruction,electromagnetic decoupling performance,biomedical mri,fdtd simulation,higher quality imaging,grappa reconstruction algorithm,microstrip transmission line resonator,second harmonic resonators,electromagnetic coupling,radiofrequency transceiver array design,multichannel microstrip transceiver arrays,conventional primary resonator microstrip array,higher-order harmonic transceiver array design technique,in vivo parallel magnetic resonance imaging,radio-frequency (rf) coil array,finite difference time-domain analysis,densely spaced transceiver array design,high field,medical image processing,phantom,magnetic field,second harmonic,magnetic resonance image,miniaturization,transmission line,microstrip,harmonic analysis,radio frequency,magnetics,high frequency,resonant frequency,magnetic resonance imaging,imaging,g factor,higher order,transducers | Transceiver,Imaging phantom,Electronic engineering,Harmonic analysis,Harmonics,Artificial intelligence,Iterative reconstruction,Computer vision,Resonator,Harmonic,Nuclear magnetic resonance,Mathematics,Microstrip | Journal |
Volume | Issue | ISSN |
31 | 2 | 1558-254X |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
7 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Bing Wu | 1 | 6 | 1.91 |
| Chunsheng Wang | 2 | 8 | 3.23 |
| Jonathan Lu | 3 | 1 | 0.76 |
| Yong Pang | 4 | 7 | 2.41 |
| Sarah J. Nelson | 5 | 44 | 6.96 |
| Daniel B Vigneron | 6 | 41 | 8.17 |
| Xiaoliang Zhang | 7 | 15 | 7.89 |