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KMID : 1001220070090020011
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Journal of the Korean Society of Digital Medical Imaging Technology
2007 Volume.9 No. 2 p.11 ~ p.16
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A Study on Dynamic Susceptibility-weighted Perfusion MR Imaging at High Magnetic Filed : Comparison of Gradient Echo-EPI and Spin Echo-EPI
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Goo Eun-Hoe
Chae Hong-In
Park Jong-Bae
Lim Cheong-Hwan
Kim Jeong-Koo
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Abstract
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We have evaluated and compared of gradient echo and spin echo EPI for compensating about deeply distortion aspect in case of post-operation patients in magnetic resonance image. A total of 100 patients were performed on 3.0 T(GE Signa Excite E2, USA) with 8ch head coil. As a result of analysis, The SNRs of whiter and gray matter areas were 36.74 06 and 39.96 09 in the gradient echo EPI, the SNRs which white and gray matter areas were slightly higher than gradient echo EPI(P<0.005, paired student t-test). It was 46.24 11 and 51.38 13 in gradient and spin echo EPI, respectively. The signal intensity in the whiter and gray matter areas also were 87.33 15.24 and 140.66 13.45 in the gradient echo EPI techniques, The signal intensity of gradient echo EPI showed higher values compared to spin echo EPI. Otherwise, gradient echo EPI technique is distortion enough to operation wound and edge of the image, while spin echo EPI technique did not appear almost. In this point, the spin echo EPI technique, after surgical operation according to patient state beside gradient echo EPI techniques that signalbeside gradient echo EPI techniques that signal intensity is high and patient’s case which image distortion is serious by metal etc, will be provide the useful information in adults and pediatric patients.
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KEYWORD
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Gradient echo EPI, Spine echo EPI, Magnetic resonance image
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