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Facial Exposure Dose Assessment During Intraoral Radiography by Radiological Technologists
Yu Hwan, ¾çÇÑÁØ,
¼Ò¼Ó »ó¼¼Á¤º¸
( Yu Hwan ) - Hallym University Graduate Studies Department of International Radiological Science
¾çÇÑÁØ ( Yang Han-joon ) - Hallym University Graduate Studies Department of International Radiological Science
KMID : 0357520140370030195
Abstract
º» ¿¬±¸¿¡¼´Â ±¸³» ÃÔ¿µ½Ã ¹æ»ç¼±ÀÛ¾÷Á¾»çÀÚ¿Í X¼±°ü »çÀÌ °Å¸®ÀÇ Áõ°¡¿¡ µû¶ó ¹æ»ç¼±ÀÛ¾÷Á¾»çÀÚÀÇ ¾È¸éºÎ ÇÇÆø¼±·® °¨¼ÒÀÇ º¯È¸¦ ÃøÁ¤ÇϰíÀÚ ÇÏ¿´´Ù. ¿ì¼± ÀÎüÁ¶Á÷°ú À¯»çÇÑ ¾È¸éºÎ PhantomÀ» Á¦ÀÛÇÏ¿´´Ù. ±¸³» ÃÔ¿µ ÀåÄ¡¸¦ ÀÌ¿ëÇÏ¿© ÃÔ¿µÁ¶°ÇÀ» ¼ºÀÎ »ó¾Ç ´ë±¸Ä¡ºÎ ³ëÃâÁ¶°Ç (60kVp, 10mA. 50msec)°ú ¼Ò¾Æ »ó¾Ç ´ë±¸Ä¡ºÎ ³ëÃâÁ¶°Ç (60kVp, 10mA, 20msec)À¸·Î ¼³Á¤ ÇÏ°í ¹æ»ç¼±ÀÛ¾÷Á¾»çÀÇ ¾È¸éºÎÀÇ À§Ä¡¿¡ Chamber¸¦ °íÁ¤½ÃÄ×´Ù. X¼± °ü±¸¿Í PhantomÀ» Chamber·Î ºÎÅÍ 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, 40cm À§Ä¡½ÃŲ ÈÄ °¢ °Ë»çÁ¶°ÇÀ¸·Î PhantomÀ» 20ȸ Á¶»çÇÑ ÈÄ Æò±Õ »ê¶õ¼±·®À» ÃøÁ¤ ÇÏ¿´´Ù. ¿¬±¸ °á°ú ¼ºÀÎ Á¶°ÇÀ¸·Î Á¶»çÇÑ ÈÄ °¨¼ÒÀ²Àº 10cm¿¡¼ Á¶»çÇÑ »ê¶õ¼±·®À» ±âÁØÀ¸·Î ÇÏ¿´À» ¶§ 40cm ¿¡¼´Â °¨¼ÒÀ²ÀÌ 7.43%·Î ¾à 92.6%°¡ °¨¼Ò°¡ µÇ¾ú´Ù. ¶ÇÇÑ ¼Ò¾Æ Á¶°ÇÀ¸·Î Á¶»çÇÑ ÈÄ °¨¼ÒÀ²Àº 10 cm¿¡¼ Á¶»çÇÑ »ê¶õ¼±·®À» ±âÁØÀ¸·Î ÇÏ¿´À» ¶§ 40 cm ¿¡¼´Â °¨¼ÒÀ²ÀÌ 2.58 %·Î ¾à 97.6%°¡ °¨¼Ò°¡ µÇ¾ú´Ù. °á·ÐÀûÀ¸·Î Ä¡°ú ¹æ»ç¼± °Ë»ç ½Ã ¹æ»ç¼± ÇÇÆø¿¡ ´ëÇÑ ¹æÈ£°¡ ÇÊ¿äÇÒ °ÍÀ¸·Î »ç·áµÈ´Ù.
The study examined the changes in the decreased facial exposure dose for radiological technologists depending on increased distance between the workers and the X-ray tube head during intraoral radiography. First, the facial phantom similar to the human tissues was manufactured. The shooting examination was configured to the maxillary molars for adults (60kVp, 10mA, 50msec) and for children (60kVp, 10mA, 20msec), and the chamber was fixed where the facial part of the radiation worker would be placed using the intraoral radiography equipment. The distances between the X-ray tube head and the phantom were set to 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, and 40cm. The phantom was radiated 20 times with each examination condition and the average scattered doses were examined. The rate at the distance of 40cm decreased by about 92.6% to 7.43% based on the scattered rays radiated at the distance of 10cm under the adult conditions. The rate at the distance of 40cm decreased by about 97.6% to 2.58% based on the scattered rays radiated at the distance of 10cm under the children conditions. Protection from the radiation exposure was required during the dental radiographic examination.
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Intraoral radiography; exposure dose; distance
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