Àá½Ã¸¸ ±â´Ù·Á ÁÖ¼¼¿ä. ·ÎµùÁßÀÔ´Ï´Ù.

Åä³¢ÀÇ ÀÏÃø ½Åµ¿¸Æ °áÂûÈÄ ¹ß»ýµÈ ½Å°æ»ö¿¡ À־ È®»ê°­Á¶¿µ»óÀÇ À¯¿ë¼º¿¡ °üÇÑ ¿¬±¸ MR Imaging Findings of Renal Infarction Induced by Renal Artery Ligation in Rabbits : The Usefulness of Diffusion-weighted Imaging

´ëÇѹæ»ç¼±ÀÇÇÐȸÁö 1998³â 38±Ç 2È£ p.309 ~ 317
¼Ò¼Ó »ó¼¼Á¤º¸
ÀÌÁØ¿ì/Jun Woo Lee ±è¼®/±è¿ë¿ì/ÇãÁø»ï/ÃÖ»ó¿­/¹®Å¿ë/À̼®È«/±èº´¼ö/ÀÌâÈÆ/Suck Kim/Yong Woo Kim/Jin Sam Hu/Sang Yoel Choi/Tae Yong Moon/Suck Hong Lee/Byung Su Kim/Chang Hun Lee

Abstract

¸ñ Àû : Åä³¢ÀÇ ½Åµ¿¸ÆÀ» °áÂûÇÑ ÈÄ ¹ß»ýµÈ ½Å°æ»ö¿¡¼­ ½Å½ÇÁúÀÇ º¯È­¾ç»ó¿¡ °üÇÏ¿©, È®»ê
°­Á¶¿µ»ó(diffusion weighted imaging, DWI) ¼Ò°ßÀ» ½ºÇÉ¿¡ÄÚ(spin echo, SE) ¸í»ó ¼Ò°ß°ú
ºñ±³ÇÏ¿© È®»ê°­Á¶¿µ»óÀÇ À¯¿ë¼ºÀ» º¸°íÀÚ ÇÏ¿´À¸¸ç ¾Æ¿ï·¯ º´¸®Á¶Á÷ÇÐÀû ¼Ò°ß°ú °ü°è¸¦ ¾Ë
¾Æº¸°íÀÚ ÇÏ¿´´Ù.
´ë»ó ¹× ¹æ¹ý : 22¸¶¸® Åä³¢ÀÇ Á½ŵ¿¸ÆÀ» °áÂûÇÑ ÈÄ 30ºÐ, 1½Ã°£, 2½Ã°£, 3½Ã°£, 6½Ã°£, 12
½Ã°£, 24½Ã°£, 2ÀÏ, 3ÀÏ, 7ÀÏ, 20ÀÏÀÇ °¢ ½Ã°£´ë¿¡ µÎ ¸¶¸®¾¿ ½ºÇÉ¿¡ÄÚ T1-°­Á¶¿µ»ó, Åͺ¸-½º
ÇÉ¿¡ÄÚ T2-°­Á¶¿µ»ó ¹× È®»ê°­Á¶¿µ»óÀ» µÉ¿µÇÑ ÈÄ Èñ»ý½ÃÄ×´Ù. ÀÌÈÄ ½ºÇÉ¿¡ÄÚ¿µ»ó°ú È®»ê
°­Á¶¿µ»óÀ» ºñ±³ÇÏ°í º´¸®Á¶Á÷¼Ò°ß°úÀÇ °ü°è¸¦ ºñ±³ºÐ¼®ÇÏ¿´´Ù.
°á °ú : 30ºÐ° ½ÃÇàÇÑ ÀÚ±â°ø¸í¿µ»ó¿¡¼­ ȯ½ÅÀÇ ½ÅÈ£°­µµ´Â ½ºÇÉ¿¡ÄÚ T1- ¹× T2-°­Á¶¿µ
»ó¿¡¼­´Â º¯È­°¡ ¾ø¾úÀ¸³ª, È®»ê°­Á¶¿µ»ó¿¡¼­´Â ¶Ñ·ÇÇÑ Áõ°¡¸¦ º¸¿´´Ù. T2-°­Á¶¿µ»ó¿¡¼­ Á¤
»ó½Å¿¡ ´ëÇÑ È¯½ÅÀÇ ½ÅÈ£°­µµºñ´Â °áÂûÈÄ 30ºÐ°ºÎÅÍ 2ÀÏ°±îÁö Áõ°¡ÇÑ ÈÄ 20ÀÏ°±îÁö ¾à°£
°¨¼ÒÇÏ¿´´Ù. È®»ê°­Á¶¿µ»ó¿¡¼­ÀÇ ½ÅÈ£°­µµºñ´Â °áÂûÈÄ 30ºÐ°ºÎÅÍ 12½Ã°£Â°±îÁö Áõ°¡ÇÑ ÈÄ
°¨¼ÒÇÏ¿© 2ÀÏ°¿Í 3ÀÏ° »çÀÌ¿¡ Á¤»óÀ¸·Î µ¹¾Æ¿Â ÈÄ 20ÀÏ°±îÁö ´õ¿í °¨¼ÒÇÏ¿´´Ù. ÁÖµÈ º´
¸®Á¶Á÷ÇÐÀû ¼Ò°ßÀº °áÂûÈÄ 1½Ã°£Â°¿Í 6½Ã°£Â° »çÀÌÀÇ Åä³¢´Â ¿ïÇ÷ ¹× ¼¼´¢°üÀÇ Á¾Ã¢, 12½Ã
°£Â°¿Í 2ÀÏ°»çÀÌ´Â ¼¼´¢°üÀÇ º¯¼º ¹× ±«»ç, 3ÀÏ°´Â ÀÀ°í±«»ç, 7ÀÏ°´Â ¼¼´¢°ü»çÀÌÀÇ ¼¼Æ÷
Æı« ¹°ÁúÀÇ Ä§Âø, 20ÀÏ°´Â ¼¼´¢°ü»çÀÌ¿¡ ¼¶À¯¾Æ¼¼Æ÷·Î ġȯµÇ´Â ¼Ò°ßÀ» º¸¿´´Ù.
°á ·Ð : È®»ê°­Á¶¿µ»óÀº Ãʱ޼ºÀÇ ½Å°æ»öÀ» ¹ß°ßÇϴµ¥ À¯¿ëÇϸç, Çö¼ºÈ®»ê°è¼öÀÇ º¯È­¾ç»ó
Àº ½Å°æ»öÀÇ °æ°ú¸¦ ¾Æ´Âµ¥ Ãß°¡ÀûÀÎ Á¤º¸¸¦ Á¦°øÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î »ý°¢µÈ´Ù.
#ÃÊ·Ï#
Purpose : To assess the usefulness of diffusion-weighted imaging(DWI) in evaluating
serial parenchymal changes in renal infarction iduced by renal artery ligation, by
comparing this with the conventional spin echo technique and correlatiog the results
with the histopathological findings.
Materials and Methods : In 22 rabbits, renal infarction was induced by ligation of the
renal artery. spin-echo T1-weighted imaging(T1WI), turbo spin-echo(TSE) T2-weighted
imaging(T2W1), and DWI were performed, using a 1.5-T superconductive unit, at 30
minutes, 1 hour, 2, 3, 6, 12 and 24 hours, and 2, 3, 7 and 20 days after left renal artery
ligation. Changes in signal intensity on T1W1, T2Wl, and DWI were correlated with
histopathologic findings.
Results : On MR images obtained 30 minutes after ligation, the signal intensity of
affected kidney was not significantly different rom that of contralateral kidney, as seen
on T1W1 and T2W1, but was noticeably higher on DWI, On T2W1, the signal intensity
ratio(SIR) was slightly higher over time from 30 minutes to 2 days after ligation, and
then decreased slightly. The SIR on DWI inxreased abruptly at 30 minutes, remained
high until 12 hours, and then fell, returning to close to the normal range at between 2
and 3 days. It fell further, below the normal range, until 20 days after ligation. The
main histopathologic findings after ligation were congestion and swelling of renal tubules
(1-6 hours after ligation), degeneration and necrosis of renal tubules (12 hours-2 days),
coagulation necrosis of renal tubules(3 days), collection of cellular debris between renal
tubules (7 days), and proliferation of fibroblast between renal tubules (20 days).
Conclusion : Diffusion-weighted imaging is useful for the detection of hyperacute renal
infarction, and the apparent difusion coefficient may provide additional information
concerning its evlution.(J Korean Rsdiol Soc 1998: 38: 309-317)

Å°¿öµå

Animals; Kidney; MR; Kidney; infarction; Renal arteries; therapeutic blockade;

¿ø¹® ¹× ¸µÅ©¾Æ¿ô Á¤º¸

µîÀçÀú³Î Á¤º¸

KoreaMed
KAMS