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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Current Result Document : 3 / 6 ÀÌÀü°Ç ÀÌÀü°Ç   ´ÙÀ½°Ç ´ÙÀ½°Ç

ÇѱÛÁ¦¸ñ(Korean Title) MRI ¿µ»óÀÇ 3Â÷¿ø °¡½ÃÈ­¸¦ ÅëÇÑ ¿µ»ó ºÒ±ÕÀϼº º¸Á¤ ±â¹ý
¿µ¹®Á¦¸ñ(English Title) Nonuniformity Correction Scheme Based on 3-dimensional Visualization of MRI Images
ÀúÀÚ(Author) ±èÇüÁø   ¼­±¤´ö   Hyoung-Jin Kim   Kwang-deok Seo  
¿ø¹®¼ö·Ïó(Citation) VOL 14 NO. 04 PP. 0948 ~ 0958 (2010. 04)
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(Korean Abstract)
MRI ½Ã½ºÅÛÀÌ ¼öÁýÇÏ´Â ÀÎü½ÅÈ£´Â ¸Å¿ì ¹Ì¾àÇϱ⠶§¹®¿¡ ¿µ»óÈ­ °úÁ¤À» °ÅÄ¡¸é¼­ ¿ÜºÎ ÀâÀ½À̳ª ½Ã½ºÅÛ ºÒ¾ÈÁ¤¼º¿¡ ÀÇÇÑ ¿µÇâÀ» ½±°Ô ¹ÞÀ» ¼ö ÀÖ´Ù. µû¶ó¼­ º» ³í¹®¿¡¼­´Â Àú ÀÚÀå MRI½Ã½ºÅÛ¿¡¼­ RF ¼ö½ÅÄÚÀÏÀÇ µðÀÚÀÎÀû ¿ä¼Ò¿¡ ÀÇÇØ ¹ß»ýµÇ´Â ºÒ±ÕÀϼºÀ» ºÐ¼®ÇÏ¿© ¿µ»óÀÇ ±ÕÀϵµ Çâ»ó ±â¹ýÀ» Á¦¾ÈÇÑ´Ù. º» ³í¹®¿¡¼­´Â MRI¿µ»óÀÇ ½ÅÈ£°­µµ ºÒ±ÕÀϼºÀ» º¸Á¤Çϱâ À§ÇÑ ¹æ¹ý Áß¿¡¼­ ÆÒÅÒ µ¥ÀÌÅ͸¦ ÀÌ¿ëÇÏ¿© È®ÀåµÈ Å©±â¸¦ °®´Â 3Â÷¿ø bias º¼·ý µ¥ÀÌÅ͸¦ ȹµæÇϱâ À§ÇÑ ¹æ¹ýÀ» Á¦¾ÈÇÔÀ¸·Î½á ´Ù¾çÇÑ Å©±â¸¦ °®´Â ¿µ»óÀÇ º¸Á¤ÀÌ °¡´ÉÇϵµ·Ï ÇÏ¿´´Ù. Á¦¾ÈµÈ bias µ¥ÀÌÅÍÀÇ ÃÖÀûÈ­ ±â¹ýÀ» Àû¿ëÇÏ¿© ½ÇÇèÀ» ¼öÇàÇÑ °á°ú ´ÜÀÏ bias µ¥ÀÌÅÍÀÇ »ç¿ëÀ¸·Î ´Ù¾çÇÑ ¿µ»ó¹ý¿¡ ÀÇÇÑ ¿µ»óÀ» È¿°úÀûÀ¸·Î º¸Á¤ÇÒ ¼ö ÀÖÀ½À» È®ÀÎ ÇÏ¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
Human body signals collected by the MRI system are very weak, such that they may be easily affected by either external noise or system instability while being imaged. Therefore, this paper analyzes the nonuniformity caused by a design of the RF receiving coil in a low-magnetic-field MRI system, and proposes an efficient method to improve the image uniformity. In this paper, a method for acquiring 3D bias volume data by using phantom data among various methods for correcting such nonuniformity in MRI image is proposed, such that it is possible to correct various-sized images. It is shown by simulations that images obtained by various imaging methods can be effectively corrected using single bias data.
Å°¿öµå(Keyword) MRI ¿µ»ó ºÒ±ÕÀϼº º¸Á¤   ÀǷ῵»ó󸮠  ¹ÙÀ̾ º¸Á¤   3Â÷¿ø °¡½ÃÈ­   Nonuniformity correction of MRI image   Medical image processing   Bias correction   3D visualization  
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