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³ú¼ö¸·Á¾¿¡¼­ ¼±Çü°¡¼Ó±â¸¦ ÀÌ¿ëÇÑ ¹æ»ç¼±¼ö¼ú È¿°ú Treatment of Intracranial Meningioma with Linac Based Radiosurgery

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°èö½Â/Chul seung Kay À±¼¼Ã¶/Á¤¼ö¹Ì/À¯¹Ì·É/±è¿¬½Ç/¼­Å¼®/ÃÖ±ÔÈ£/¼Õº´Ã¶/±è¹®Âù/Sei Chul Yoon/Su Mi Chung/Mi Ryung Ryu/Yeon Sil Kim/Tae Suk Suh/Kyuho Choi/Byung Chul Son/Moon Chan Kim

Abstract

¸ñÀû: ³ú¼ö¸·Á¾ ȯÀÚµéÀ» ´ë»óÀ¸·Î ¼±Çü°¡¼Ó±â¸¦ ÀÌ¿ëÇÑ ¹æ»ç¼±¼ö¼úÀ» ½ÃÇàÇÑ °á°ú¿¡ ´ëÇÏ¿© ȯÀÚÀÇ ÀÓ»óÀû Áõ»ó°ú ¹æ»ç¼±ÇÐÀû ÃßÀû°Ë»ç¸¦ ÅëÇØ ±× È¿°ú¸¦ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.
´ë»ó ¹× ¹æ¹ý: 1988³â 7¿ùºÎÅÍ 1998³â 8¿ù±îÁö 20¸íÀÇ ³ú¼ö¸·Á¾ ȯÀÚµéÀ» ´ë»óÀ¸·Î 6 MV
¼±Çü°¡¼Ó±â¸¦ ÀÌ¿ëÇÏ¿© ¹æ»ç¼±¼ö¼úÀ» ½ÃÇàÇÏ¿´´Ù. 20¸íÀÇ È¯ÀÚµé Áß 4¸í(20%)Àº ³²¼º, 16¸í
(80%)Àº ¿©¼ºÀ̾úÀ¸¸ç, Æò±Õ¿¬·ÉÀº 51¼¼(22~78¼¼)¿´´Ù. Á¾¾çÀÇ ³ú³» À§Ä¡´Â Ãø½Ã»óµ¿ ºÎÀ§
(parasagittal area)¿Í Á¢Çü°ñ ºÎÀ§(sphenoid wing)°¡ 8·Ê(40%)·Î °¡Àå ¸¹¾Ò´Ù. ¹æ»ç¼± ¼ö¼ú
Àü¿¡ ½ÃÇàÇÑ ½Å°æ¿Ü°úÀû ¼ö¼úÀÇ È½¼ö¸¦ º¸¸é 1ȸ ½ÃÇàÇÑ °æ¿ì°¡ 11·Ê, 2ȸ°¡ 2·Ê, 3ȸ ½ÃÇà
ÇÑ °æ¿ì°¡ 1·¹¿´À¸¸ç, ¼ö¼úÀ» ½ÃÇàÇÏÁö ¾Ê°í ¹æ»ç¼±¼ö¼ú¸¸À» ½ÃÇàÇÑ °æ¿ì´Â 6·Ê¿´´Ù. Á¾¾çÀÇ
Æò±Õ ºÎÇÇ´Â 5.72 cm3 (0.78~15.1 cm3)¿´À¸¸ç, 2Â÷ ½ÃÁرâ
(secondary collimator)ÀÇ Áö¸§ÀÇ Áß°£ °ªÀº 2 cm(1~3 cm)À̾ú´Ù. Á¾¾çº¯¿¬ºÎÀÇ Æò±ÕÁ¶»ç·®
Àº 19.6 Gy (9~30 Gy)¿´´Ù. ÃßÀû°üÂû±â°£Àº 2.5~109°³¿ù·Î Áß¾Ó°ªÀº 53°³¿ùÀ̾ú´Ù.
°á°ú: ¹æ»ç¼±ÇÐÀû °Ë»ç¿Í ½Å°æÇÐÀû °Ë»ç»ó ¸ðµÎ ¹ÝÀÀ·üÀº 95%¿´´Ù. ¹æ»ç¼±ÃßÀû°Ë»ç»ó Á¾¾ç
ÀÇ ºÎÇÇ°¡ ÁÙ¾îµç °æ¿ì´Â 5·Ê(25%), Á¾¾çÀÇ ºÎÇÇ¿¡ º¯È­°¡ ¾ø´Â °æ¿ì´Â 14·Ê(70%), ±×¸®°í
Á¾¾çÀÇ ºÎÇÇ°¡ Áõ°¡µÈ °æ¿ì°¡ 1·Ê(5%)¿´´Ù. Á¾¾çÀÇ ºÎÇÇ°¡ Áõ°¡µÈ 1·Ê¸¦ Á¦¿ÜÇÑ 19¸íÀÇ È¯
ÀÚÁß, 4¸íÀÇ È¯ÀÚ¿¡¼­ ÃßÀû ¿µ»ó °Ë»ç»ó Á߽ɺα«»çÀÇ ¼Ò°ßÀÌ º¸¿´´Ù. ÀÓ»óÀû Áõ»óÀÇ È£Àü¿©
ºÎ¿¡ µû¸¥ ½Å°æÇÐÀûÀÎ °Ë»ç»ó Áõ»óÀÇ È£ÀüÀÌ ÀÖ¾ú´ø °æ¿ì´Â 9¸í(45%), Áõ»óÀÇ º¯È­°¡ ¾ø¾ú
´ø °æ¿ì´Â 10¸í(50%)¿´´Ù. Áõ»óÀÌ ¾ÇÈ­µÇ¾ú´ø 1¸í(5%)ÀÇ È¯ÀÚ´Â ¼ö¼úÀ» ½ÃÇàÇÏ¿©, ¹æ»ç¼±
±«»çÀÇ ¼Ò°ßÀ» º¸¿´´Ù.
°á·Ð: ³ú¼ö¸·Á¾ ȯÀڵ鿡¼­ ¼±Çü°¡¼Ó±â¸¦ ÀÌ¿ëÇÑ ¹æ»ç¼±¼ö¼úÀº ºÎÀÛ¿ë ¾øÀÌ ½ÃÇàÇÒ ¼ö ÀÖ´Â
È¿°úÀûÀÎ Ä¡·á¹ýÀ¸·Î »ý°¢µÈ´Ù.

Purpose: To evaluate the role of linac based radiosurgery(RS) in the treatment of meningiomas, we retrospectively analyzed the results of clinical and follow up CT/MRI studies.
Methods and Materials: From the 1998 July to 1998 April, twenty patients of
meningioma had been treated with 6 MV linear accelerator based radiosurgery. Of the
20 patients, four (20%) were male and 16(80%) were female. Mean age was 51 years
old (22~78 years old). Majority of intracranial location of tumor for RS were parasagittal
and sphenoid wing area. RS was done for primary treatment in 6 (30%), postoperative
residual lesions in 11 (55%) and regrowth after surgery in 3 (15%). Mean tumor volume
was 5.72 cm3 (0.78~15.1 cm3) and secondary collimator size
was 2.04 cm (1~3 cm). The periphery of tumor margin was prescribed with the mean
dose of 19.6 Gy (9~30 Gy) which was 40~90% of the tumor center dose. The follow up
duration ranged from 2.5 to 109 months (median 53 months). Annual CT/MRI scan was
checked.
Results: By the follow up imaging studies, the tumor volume was reduced in 5 cases
(25%), arrested growth in 14 cases(70%), and increased size in 1 case (15%). Among
these responsive and stable 19 patients by imaging studies, there showed loss of
contrast enhancement after CT/MRI in four patients In clinical response, nine (45%)
patients were considered improved condition, 10 (50%) patients were stable and one
(5%) was worsened to be operated. This party resulted in necrosis after surgery.
Conclusion: The overall control rate of meningiomas with linac based RS was 95% by
both imaging follow-up and clinical evaluation. With this results, linac based RS is
considered safe and effective treatment method for meningioma

Å°¿öµå

³ú¼ö¸·Á¾; ¼±Çü°¡¼Ó±â; ¹æ»ç¼±¼ö¼ú; Meningioma; Linear accelerator; Radiosurgery;

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