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KMID : 0352720080320040332
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Journal of Ginseng Research
2008 Volume.32 No. 4 p.332 ~ p.336
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Distinction of Internal Tissue of Red Ginseng Using Magnetic Resonance Image
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Kim Chun-Suk
Jung In-Chan
Kim Se-Bong
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Abstract
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Red ginseng is classified according to outer form and the quality of internal tissue, and red ginseng below third grade can’t be sold. Also there are many differences in price according to grade. So if inferior Red ginseng is sold, economic loss and claim take place. This research is done conducted to investigate the possibility of the non-destruction internal tissue investigation of red ginseng. It is observed and compared that MR image after getting MR image agrees with real cutting side in 10-13% water content of red ginseng. The MR image can be obtained to see the internal section of red ginseng with equal condition of time, temperature and slice thickness in spin echo pulse sequence. The MR signal of red ginseng is very weak, because it contains low water density. So it takes about 30 minutes with the measurement of single point image (SPI). But the suitable time to distinguish internal tissues is about 9 seconds in TE (Echo Time) 2.23 ms, TR (Repetition Time) 150ms. The image to discriminate internal tissues in 9 seconds can be obtained when slice thickness is 10 mm with changes of 3, 5, 10 mm. The image obtained after 30 minutes’ boiling of 55 degrees has clearer image than that of normal temperature. It is thought that MR signal is stronger through active motion of water particles as temperature increases. With this method MR image of red ginseng can be obtained and characteristics of internal tissues can be observed in such a short time.
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KEYWORD
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internal structure, Korean red ginseng, magnetic resonance image(MRI), spin echo pulse sequence, slice thickness
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