Abstract
BackgroundHigh-resolution anatomical and functional images can be acquired using high- andultrahigh-field magnetic resonance imaging (MRI) systems. An increase in the mainmagnetic field strength results in high resolution but suffers from thedisadvantage of field nonuniformity in the radio frequency (RF). To overcome thisRF field inhomogeneity, parallel RF transmission system and sensitivity encodingare widely used.FindingsOur experimental results showed that the best signal intensity was in transmit andreceive mode head coil, except for the T2-weighted fast field echo (FFE). The bestsignal-to-noise ratio (SNR) was in the 32-channel head coil.ConclusionIn general, multiple-channel coils have been known as more efficient materials interms of SNR. However, they may not be as important in experiments where intensityis an important factor. Therefore, a suitable coil should be selected using apulse sequence.
Highlights
High-resolution anatomical and functional images can be acquired using high- and ultrahigh-field magnetic resonance imaging (MRI) systems
The purpose of this study is to evaluate the transmit and receive mode (T/R) head coil and the 8, 16, and 32-channel head coils using each radio frequency (RF) pulse sequence [T1-weighted spin echo (SE), T1-weighted fast field echo (FFE), T2-weighted turbo SE (TSE), and T2-weighted FFE] in terms of signal-to-noise ratio (SNR), slice profile of the images, and RF field uniformity
Increasing the RF coil elements resulted in the decrease in the signal intensity
Summary
The purpose of this study is to evaluate the T/R head coil and the 8-, 16-, and 32-channel head coils using each RF pulse sequence [T1-weighted spin echo (SE), T1-weighted fast field echo (FFE), T2-weighted turbo SE (TSE), and T2-weighted FFE] in terms of SNR, slice profile of the images, and RF field uniformity
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