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Abstract

¸ñ Àû : Àü»êÈ­´ÜÃþÃÔ¿µ¸ðÀÇÄ¡·á±â¸¦ ÀÌ¿ëÇÑ ÈĵοÍ(posterior fossa) Á¾¾çÀÇ ¹æ»ç¼±Ä¡·á ½Ã ¾î¶² ÀÚ¼¼·Î Ä¡·áÇÏ´Â °ÍÀÌ Ä¡·á¹üÀ§ °áÁ¤ ¹× Ä¡·á°èȹ¿¡ À¯¸®ÇÑÁö¿¡ ´ëÇÑ ³íÀÇ´Â °ÅÀÇ ÀÌ·ç¾îÁöÁö ¾Ê¾Ò´Ù. µû¶ó¼­ ÀúÀÚµéÀº ÈÄµÎ¿Í Ä¡·áÀÇ ÀûÀýÇÑ Ä¡·áÀÚ¼¼¸¦ ¼³Á¤ÇÏ°í À̸¦ ÀÌ¿ëÇÑ Ä¡·á°èȹÀ» ¼Ò°³ÇÏ°íÀÚ º» ¿¬±¸¸¦ ½ÃÇàÇÏ¿´´Ù.

´ë»ó ¹× ¹æ¹ý : º» ¿¬±¸´Â ¼Ò³ú ÃæºÎ¿¡ ¹ß»ýÇÑ ¼ö¸ð¼¼Æ÷Á¾À¸·Î ¼ö¼ú ÈÄ ¹æ»ç¼±Ä¡·á¸¦ ¹ÞÀº 13¼¼ ³²ÀÚ È¯¾Æ¸¦ ´ë»óÀ¸·Î ÇÏ¿´´Ù. ȯ¾Æ´Â µÎ°³Ã´¼ö¹æ»ç¼±Ä¡·á¸¦ ÀÏÀϼ±·® 1.8 Gy·Î 30.6 Gy ½ÃÇà ¹ÞÀº ÈÄ ÈÄµÎ¿Í ¿µ¿ª¿¡ Ãß°¡¹æ»ç¼±Ä¡·á°èȹÀ» À§ÇØ Àü»êÈ­´ÜÃþÃÔ¿µ¸ðÀÇÄ¡·á¸¦ ¹Þ¾Ò´Ù. Àü»êÈ­´ÜÃþÃÔ¿µ ½Ã º¹¿ÍÀ§·Î µÎºÎ°íÁ¤Æ²À» ÀÌ¿ëÇÏ¿© ÀÚ¼¼¸¦ °íÁ¤ÇÏ°í Á¶¿µÁ¦¸¦ ÁÖÀÔÇϸ鼭 µÎ°³°ñ¿¡¼­ °æºÎ ÇϹæ±îÁö ÃÔ¿µÇÏ¿´´Ù. ´ÜÃþ ¿µ»ó¿¡ Á¤»óÁ¶Á÷°ú Ä¡·á¿µ¿ªÀ» Ç¥½ÃÇÏ¿´°í 3Â÷¿ø ÀÔüġ·á°èȹ½Ã½ºÅÛÀ» ÀÌ¿ëÇØ ºñµ¿ÀÏÆò¸é ÀÔüÁ¶Çü ºöÀ» ÀÌ¿ëÇÏ¿© Ä¡·á°èȹÀ» ¼¼¿ü´Ù.

°á °ú : Àü»êÈ­´ÜÃþ¿µ»ó ÃÔ¿µÀÌ ÁøÇàµÇ´Â µ¿¾È ȯ¾Æ´Â ¾ÈÁ¤µÇ°í Æí¾ÈÇÑ ÀÚ¼¼¸¦ À¯ÁöÇÒ ¼ö ÀÖ¾ú°í, ÀÌ ÈÄ Ä¡·á Áß¿¡µµ ÀÚ¼¼¸¦ ÀçÇöÇϴµ¥ Å« ¾î·Á¿òÀÌ ¾ø¾ú´Ù. º¹¿ÍÀ§ ÀÚ¼¼·Î ¾òÀº Àü»êÈ­´ÜÃþ¿µ»ó¿¡¼­ õ¸·°ú ÀϺΠÁ¤¸Æµ¿ÀÇ Á¶¿µ Áõ°­ÀÌ Àß °üÂûµÇ¾î ÈĵοÍÀÇ ÇغÎÇÐÀû ¹üÀ§¸¦ °áÁ¤ÇϱⰡ ¿ëÀÌÇÏ¿´´Ù. ¶Ç º¹¿ÍÀ§ ÀÚ¼¼¿¡¼­ ÈĵοͰ¡ ȯ¾ÆÀÇ Àü¸é¿¡ À§Ä¡ÇÏ°Ô µÇ¾î 3Â÷¿ø ÀÔüġ·á°èȹ ½Ã ¹æ»ç¼±ÀÇ ¹æÇâÀÇ Á¦¾àÀ» ¹ÞÁö ¾Ê¾Ò°í Ä¡·á ħ´ë¿¡ ÀÇÇÑ ¼±·®ºÐÆ÷ÀÇ ºÒÈ®½Ç¼ºÀÌ ¾ø¾î¼­ º¸´Ù Á¤È®ÇÑ Ä¡·á°èȹÀÌ °¡´ÉÇÏ¿´´Ù.

°á ·Ð : º» ¿¬±¸¿¡¼­ ÈÄµÎ¿Í Ä¡·á ½Ã ÀûÀýÇÑ Ä¡·áÀÚ¼¼´Â º¹¿ÍÀ§ÀÓÀ» ¾Ë ¼ö ÀÖ¾ú°í, ¾ÈÁ¤µÇ°í Ä¡·á°èȹÀÌ ¿ëÀÌÇÑ ÀÚ¼¼¸¦ ã¾Æ³»±â À§ÇØ, ¸¶Ãë(sedation)°¡ ÇÊ¿äÇÏÁö ¾Ê°Å³ª ÀǽĻóÅ°¡ ¸í·áÇÑ ¼Ò¾Æ ȯÀÚ¸¦ ÅëÇÏ¿©, Áö¼ÓÀûÀÎ ¿¬±¸°¡ ÀÌ·ç¾îÁ®¾ß ÇÒ °ÍÀÌ´Ù.

Purpose : To explore a 3D conformal radiotherapy technique for a posterior fossa boost, and the potential advantages of a prone position for such radiotherapy.

Materials and Methods : A CT simulator and 3D conformal radiotherapy planning system was used for the posterior fossa boost treatment of a 13-year-old medulloblastoma patient. He was placed in the prone position and immobilized with an aquaplast mask and immobilization mold. CT scans were obtained of the brain from the top of the skull to the lower neck, with IV contrast enhancement. The target volume and normal structures were delineated on each slice, with treatment planning performed using non-coplanar conformal beams.

Results : The CT scans, and treatment in the prone position, were performed successfully. In the prone position, the definition of the target volume was made easier due to the well enhanced tentorium. In addition, the posterior fossa was located anteriorly, and with the greater choice of beam arrangements, more accurate treatment planning was possible as the primary beams were not obstructed by the treatment table.

Conclusion : A posterior fossa boost, in the prone position, is feasible in cooperating patients, but further evaluation is needed to define the optimal and most comfortable treatment positions.

Å°¿öµå

ÈĵοÍ(posterior fossa); Àü»êÈ­´ÜÃþÃÔ¿µ¸ðÀÇÄ¡·á; 3Â÷¿ø ÀÔüÁ¶ÇüÄ¡·á; º¹¿ÍÀ§;Posterior fossa; CT simulation; Conformal radiotherapy; Prone position

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