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Home > ÇÐȸȰµ¿ > ±¹Á¦ÇмúÁö |
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ÀÛ¼ºÀÏ : 10-10-29 16:41
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Dong-Cheol Woo et al |
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Development of cone-shape phantom for multi-voxel MR spectroscopy |
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Journal of Neuroscience Methods |
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40 |
ÆäÀÌÁö |
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101-107 |
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2007-1-1 |
¸µ Å© |
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Abstract |
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The purpose of this study was to develop a cone-shape phantom for multi-voxel magnetic resonance spectroscopy (MRS) and to evaluate MR
spectra using the cone-shape phantom we developed in this study.
A cone-shape MRS phantom was developed with a combination of cone-shape vials. The cylindrical main body was made of acrylic resin and
the cone-shape vials were fabricated from poly-ethylene cones. Each cone of the phantom was filled with various metabolite materials. 1.5T GE
and 3T Philips systems were used for the single voxel spectroscopy (SVS) as well as for the multi-voxel spectroscopy (MVS). Identification and
quantification of the metabolite materials in the cone-shape phantom were done by the SAGE post-program. The MR images and spectra of the
cone-shape phantom were obtained from the assigned slice position. The high order shimming control provided enhanced resolution in the SVS
and MVS. The area and amplitude were proportional to the metabolite volume in the voxel. The present study demonstrated that the cone-shape
phantom was useful for the metabolite quantification. Thus, we propose that the cone-shape phantom can be used for the evaluation of quality
control of the MR spectra obtained from SVS and MVS. |
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