Title :
Comparison of high-density composite and surface coil arrays for MRI of spherical imaging volumes
Author :
Maunder, Adam Mitchell ; Daneshmand, Mojgan ; Mousavi, Parvin ; Fallone, B.G. ; De Zanche, Nicola
Author_Institution :
Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB, Canada
Abstract :
The array configuration that maximizes the SNR in magnetic resonance imaging depends on the number and arrangement of RF coil elements. A comparison of composite coils (a surface coil in combination with two upright coils) and surface coils in arrays with 18, 36, and 54 elements is presented at 128 MHz. Realistic multi-port noise modeling shows that the combined SNR can depend strongly on matching network and preamplifier noise. Arrays of composite coils are shown to provide higher SNR than surface coil arrays at depth in the phantom as the number of elements increases.
Keywords :
biomedical MRI; coils; phantoms; preamplifiers; MRI; RF coil element arrangement; RF coil element number; array configuration; combined SNR; composite coil arrays; frequency 128 MHz; high-density composite; magnetic resonance imaging; matching network; phantom; preamplifier noise; realistic multiport noise modeling; spherical imaging volumes; surface coil arrays; upright coils; Artificial neural networks; Coils; Magnetic resonance imaging; Signal to noise ratio; Strips; arrays; composite coil; magnetic resonance imaging; radio-frequency coil;
Conference_Titel :
Microwave Symposium (IMS), 2014 IEEE MTT-S International
Conference_Location :
Tampa, FL
DOI :
10.1109/MWSYM.2014.6848554
