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http://dx.doi.org/10.7742/jksr.2018.12.5.699

Signal Intensity Changes according to Coil Position Changes in MRI using 6 Channel SENSE Cardiac Array Coils  

Choi, Kwan-Woo (Department of Radiology, Asan Medical Center)
Son, Soon-Yong (Department of Radiotechnology, Wonkwang Health Science University)
Yoo, Beong-Gyu (Department of Radiotechnology, Wonkwang Health Science University)
Publication Information
Journal of the Korean Society of Radiology / v.12, no.5, 2018 , pp. 699-706 More about this Journal
Abstract
In this study, we measured signal intensities according to array coil position changes to provide reference data of coil directions and the distances as it deters image quality unless the coils are aligned properly. The multi-purpose MRI phantom was placed in body array coils, and it was moved to the top, bottom, left, and right directions by 2 cm from the center to 10 cm. After obtaining images, signal intensities were measured and compared. The results of this study were as follows: Except for the upward direction, the signal intensities of the reference signal was not significantly different from that of the reference signal intensity within 2cm in both T1 and T2-weighted images. In conclusion, in clinical circumstances which various challenges exist to align the coils exactly on the same lines, array coils should be positioned at least within 2 cm from the center except for the upward direction, on the same line to prevent the image qualities are lowered.
Keywords
Array coil; Surface coil; Coil position change; Signal intensity; Multi-purpose MRI phantom;
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