| ¿µ¹® | linear accelerator | ÇÑ±Û | ¼±»ó°¡¼Ó±â |
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| ¼³¸í | Ä¡·á¹æ»ç¼±°ú¿¡¼ ÀÌ¿ëÇÏ´Â ±â°è·Î¼ ÀüÀÚ¸¦ »ý¼ºÇØ ³½´Ù. ÀüÀÚ´Â ´Ü¼øÈ÷ X-¼±°ú´Â ´Ù¸¥ °ÍÀ¸·Î ÀüÀÚ°¡ ±Ý¼Ó¿¡ ºÎµúÇô ³ª¿À´Â °ÍÀÌ X-¼±ÀÌ´Ù. ÀüÀÚ´Â Áø´Ü¸ñÀûº¸´Ù´Â Ä¡·á¸ñÀûÀ¸·Î ÁÖ·Î ÇǺÎÀÇ ¾Ç¼ºÁ¾¾ç(¾Ï)¿¡ »ç¿ëµÈ´Ù. |
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| ¿µ¹® | radiation | ÇÑ±Û | ¹æ»ç¼± |
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| ¼³¸í | ºûÀÇ ÀüÀÚÀÚ±âÆÄ³ª ȤÀº ÀÔÀÚÆÄ(¥á, ¥â, ¥ã¼±)¸¦ ¸»Çϴµ¥, ¾î¶² ±Ù¿ø¹°Áú¿¡¼ »ý°Ü ¹æÃâµÈ´Ù. À̿½ÖÀ» »ý¼ºÇÏ´Â °í¿¡³ÊÁö ¹æ»ç¼±(X-¼±°ú °¨¸¶¼±)À» ¸»ÇÑ´Ù. ¹æ»ç¼±Çϸé, ÁÖ·Î Àü¸®¹æ»ç¼±À» ÀǹÌÇÑ´Ù. ÀÌ·± ¹æ»ç¼±À» ÀÌ¿ëÇÏ¿©, °¡Àå ±âº»ÀûÀÎ ¹æ»ç¼±ÇÐÀû °Ë»ç¸¦ ÇÒ ¼ö ÀÖÀ¸¸ç, ÀÌ¿Ü Ä¡·á¿¡µµ ÀÌ¿ëÇϰí ÀÖ´Ù. °¢ ¹æ»ç¼±ÀÇ Á¾·ù¿¡ µû¶ó Á¶±Ý¾¿ ÀÎü¿¡ ¹ÌÄ¡´Â ¿µÇâÀÌ ´Ù¸£¸ç, À̸¦ ÀÌ¿ëÇÏ¿© °¢±â ´Ù¸£°Ô Áø´Ü ¹× Ä¡·á¿¡ ÀÌ¿ëÇÑ´Ù. |
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| ¿µ¹® | radiation dose | ÇÑ±Û | ¹æ»ç¼±·® |
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| ¼³¸í | ¹æ»ç¼±Á¶»çÀÇ Á¤µµ. ¹æ»ç¼±»ý¹°ÇÐÀ̳ª ÀÎüÀÇ ¹æ»ç¼±¹æÈ£¿¡¼´Â Àü¸®¹æ»ç¼±ÀÇ ¾ç, Áï ¼±·®ÀÌ ¹®Á¦°¡ µÈ´Ù. ¹æ»ç¼±·®¿¡¼µµ ±¹Á¦´ÜÀ§°è(SI)°¡ ä¿ëµÇ¾î ±¹Á¦¹æ»ç¼±¹æÈ£À§¿øÈ¸(ICRP)ÀÇ ±Ç°í¿¡ µû¶ó¼ ´ÙÀ½ÀÇ ¿©·¯ ´ÜÀ§°¡ ³Î¸® »ç¿ëµÈ´Ù. ¨ç Èí¼ö¼±·®(absorbed dose). ¹°ÁúÀÇ ´ÜÀ§Áú·®ÀÌ ¹æ»ç¼±¿¡ ÀÇÇØ ¹Þ¾ÆµéÀÌ´Â ¿¡³ÊÁö. ÀÌ ´ÜÀ§´Â ¹æ»ç¼± ¹× ¹°ÁúÀÇ Á¾·ù°¡ ¾î¶°ÇÑ °ÍÀÌ´õ¶óµµ »ç¿ëÇÒ ¼ö ÀÖ´Ù. ±¹Á¦´ÜÀ§´Â J/kgÀ̸ç À̰Ϳ¡ °íÀ¯ÇÑ ¸íĪÀ¸·Î ±×·¹ÀÌ(gray, ±âÈ£ Gy)°¡ ºÎ¿©µÈ´Ù. 1Gy=100¶óµå(rad). ¨è Á¶»ç¼±·®(exposure) ¶Ç´Â °øÁß¼±·®. X¼± ¶Ç´Â ¥ã¼±¿¡ ÇÑÇØ¼ »ç¿ëµÈ´Ù. ±¹Á¦´ÜÀ§´Â C/kg. ¨é ¼±·®´ç·®(dose equivalent). ¹æ»ç¼±¹æÈ£¸¦ À§ÇØ »ç¿ëµÇ´Â ¾ç. ±âÈ£´Â H. H´Â ¹æ»ç¼±ÀÇ Á¾·ù¿Í ¿¡³ÊÁö¿¡ ÀÇÇØ »ýü¿¡ ÁÖ´Â È¿°ú¸¦ º¸Á¤ÇÏ´Â ¼±Áú°è¼ö(Q)¿Í ±× ¹ÛÀÇ ÀÎÀÚ(¿¹¸¦ µé¸é ¼±·®·ü, ¹æ»ç¼ºµ¿À§¿ø¼Ò¿¡ ÀÇÇÑ ³»ºÎÇÇÆø½Ã¿¡´Â ±× ÇÙÁ¾ÀÇ Ã¼³»ºÐÆ÷ µî)¿¡ ±Ù°ÅÇÑ º¸Á¤°è¼ö(N)¸¦ Èí¼ö¼±·®(D)¿¡ °öÇÑ °Í, Áï H=D-Q-N. ¶ÇÇÑ DÀÇ ´ÜÀ§¸¦ Gy ¶Ç´Â rad·Î Ç¥½ÃÇÏ¿´À» ¶§ HÀÇ ´ÜÀ§¸¦ °¢°¢ ½Ãº£¸£Æ®(sievert, ±âÈ£ Sv) ¹× ·½(rem)À̶ó°í ÇÑ´Ù. µû¶ó¼ 1 Sv=102rem. ÀϹÝÀûÀ¸·Î ´ÜÀ§½Ã°£´çÀÇ ¼±·®À» ¼±·®·ü(dose rate)À̶ó°í ÇÑ´Ù. |
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| ¿µ¹® | radiation therapy | ÇÑ±Û | ¹æ»ç¼±¿ä¹ý |
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| ¼³¸í | X¼±, ¥ã¼±ÀÇ ÀüÀÚ¹æ»ç¼±À̳ª ÀüÀÚ¼±, ¾çÀÚ¼±, Áß¼ºÀÚ¼± µîÀÇ ÀÔÀÚ¹æ»ç¼±À» ÀÌ¿ëÇØ, ÁÖ·Î ¾Ç¼º Á¾¾ç Ä¡·á¸¦ ¸ñÀûÀ¸·Î ÇÏ´Â Ä¡·á¹ýÀÌ´Ù. ¾Ï¼¼Æ÷°¡ ÁÖÀ§ÀÇ Á¤»ó¼¼Æ÷º¸´Ùµµ ¹æ»ç¼± °¨¼ö¼ºÀÌ ³ôÀº Á¡À» ÀÌ¿ëÇÏ¿©, Á¤»ó¼¼Æ÷ÀÇ ¼Õ»óÀ» °¡´ÉÇÑ ÇÑ ÃÖ¼Ò·Î ¾ïÁ¦ÇÏ¸é¼ ¾Ï¼¼Æ÷¸¦ ÆÄ±«ÇÑ´Ù. »ç¿ëµÇ´Â ¹æ»ç¼±¿¡´Â ¹ÐºÀ¼Ò¼±¿ø¿¡¼ ³ª¿À´Â ¥ã¼±, Á÷¼±°¡¼Ó±â¿¡¼ ¾ò¾îÁö´Â °í¿¡³ÊÁö X¼±°ú ÀüÀÚ¼±, ÅÚ·¹ÄÚ¹ßÆ®ÀåÄ¡¿¡ ÀÇÇÑ 60CoÀÇ ¥ã¼±°ú, º£Å¸Æ®·Ð¿¡ ÀÇÇÑ ÀüÀÚ¼±, »çÀÌÅ©·ÎÆ®·Ð¿¡¼ ¾ò¾îÁö´Â ¾çÀÚ¼±, Áß¼ºÀÚ¼± µîÀÌ ÀÖ´Ù. |
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| ¿µ¹® | radiation therapy | ÇÑ±Û | ¹æ»ç¼±Ä¡·á |
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| ¼³¸í | ¹æ»ç¼±ÀÇ »ì±ÕÈ¿°ú³ª ¼¼Æ÷¸¦ Á×ÀÌ´Â È¿°ú¸¦ Ä¡·á¿¡ ÀÌ¿ëÇÏ´Â ¹æ¹ýÀ¸·Î, Á¼Àº Àǹ̷Π¾ÏÀÇ ¹æ»ç¼±Ä¡·á¸¦ ÀǹÌÇÑ´Ù. ¾Ï¿¡ ´ëÇÑ ¹æ»ç¼±Ä¡·á´Â ¾Ï¼¼Æ÷¸¦ Á×À̴µ¥ È¿°ú°¡ Å« º£Å¸¼±À» ÁÖ·Î »ç¿ëÇÑ´Ù. ÇÏÁö¸¸, ÀÌ·± ¹æ»ç¼±Ä¡·á´Â Á¤»ó¼¼Æ÷¿¡µµ Å« ¿µÇâÀ» ³¢ÃÄ ÀÌ¿¡ µû¸¥ ±â´ÉÀÇ Àå¾Ö¸¦ °¡Á®¿Ã ¼ö ÀÖ´Ù. µû¶ó¼ ¹æ»ç¼±Ä¡·á¿¡ À־ ´ÜÁö ±× ¾Ï¼¼Æ÷¿¡ ´ëÇÑ ÀÛ¿ë»Ó¸¸ ¾Æ´Ï¶ó, Á¤»ó¼¼Æ÷¿¡ ´ëÇÑ ÀÛ¿ëµµ °í·ÁÇÏ¿© ½ÃÇàÇÑ´Ù. |
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| LET | lidocaine, epinephrine, and tetracaine [solution]; linear or low energy transfer |
|---|---|
| HEIR | health effects of ionizing radiation; high-energy ionizing radiation |
| LFER | linear free-energy relationship |
| MTP | maximum tolerated pressure; medial tibial plateau; median time to progression; metacarpophalangeal; ... |
| RO | radiation oncology; radiation output; ratio of; relative odds; renal osteodystrophy; reverse osmosis... |
| LET | High-linear energy transfer |
|---|---|
| LET | Linear Energy Transfer |
| LSER | Linear Solvation Energy Relationship |
| LFER | linear free energy relationship |
| ET | Energy transfer |
| linear energy transfer | <radiobiology> Average amount of energy lost per unit of particle track length and expressed in keV um-1. Acronym: LET (16 Dec 1997) |
|---|---|
| resonance energy transfer | <technique> Transfer of energy from one fluorochrome to another. The emission wavelength of the fluorochrome excited by the incident light must approximately match the excitation wavelength of the second fluorochrome. If light at the second emission wavelength is detected, it implies that the two fluorochromes were physically within a few nanometres. Used as a technique to probe protein or cell interactions. (25 Jun 1999) |
| energy transfer | The transfer of energy of a given form among different scales of motion. In biochemistry, this concept generally refers to the transfer of groups from compounds that contain energy-rich bonding arrangements to compounds that have relatively energy-poor bonding characteristics via thermodynamically permissible enzymatic reactions. This principle is a major premise of the interaction between energy-producing and energy-utilizing metabolic pathways in living cells. (12 Dec 1998) |
| fluorescence energy transfer | <technique> Transfer of energy from one fluorochrome to another. The emission wavelength of the fluorochrome excited by the incident light must approximately match the excitation wavelength of the second fluorochrome. If light at the second emission wavelength is detected, it implies that the two fluorochromes were physically within a few nanometres. Used as a technique to probe protein or cell interactions. (25 Jun 1999) |
| programming, linear | A technique of operations research for solving certain kinds of problems involving many variables where a best value or set of best values is to be found. It is most likely to be feasible when the quantity to be optimised, sometimes called the objective function, can be stated as a mathematical expression in terms of the various activities within the system, and when this expression is simply proportional to the measure of the activities, i.e., is linear, and when all the restrictions are also linear. It is different from computer programming, although problems using linear programming techniques may be programmed on a computer. (12 Dec 1998) |
| non-linear | Not linear. (05 Dec 1998) |
| superficial linear keratitis | Spontaneous, painful keratitis with epithelial erosion and folds in Bowman's membrane. (05 Mar 2000) |
| linear | Pertaining to or resembling a line. Origin: L. Linearis (18 Nov 1997) |
| linear absorption coefficient | That fraction of ionizing radiation absorbed in a unit thickness of a substance or tissue. See: absorption coefficient. (05 Mar 2000) |
| linear acceleration | The rate of change of velocity without a change in direction; e.g., when the speed of an aircraft increases while flying a straight pathway. (05 Mar 2000) |
| linear accelerator | <apparatus> A sophisticated external beam radiotherapy machine which has the capabilities of focussing irradiation (although not very finely). Acronym: LinAC (16 Dec 1997) |
| linear amputation | Amputation performed by a circular incision through the skin, the muscles being similarly divided higher up, and the bone higher still. Synonym: guillotine amputation, linear amputation. (05 Mar 2000) |
| linear atrophy | Bands of thin wrinkled skin, initially red but becoming purple and white, which occur commonly on the abdomen, buttocks, and thighs at puberty and/or during and following pregnancy, and result from atrophy of the dermis and overextension of the skin; also associated with ascites and Cushing's syndrome. Synonym: atrophoderma striatum, lineae albicantes, lineae atrophicae, linear atrophy, stretch marks, stria, striae atrophicae, striate atrophy of skin, traction atrophy, vergeture. (05 Mar 2000) |
| linear dichroism | <chemistry> Differential absorption of right hand and left hand circularly polarized light resulting from molecular asymmetry involving a chromophore group. Circular dichroism is used to study the conformation of proteins in solution. (18 Nov 1997) |
| linear epidermal nevus | A congenital systematised linear nevus limited to one side of the body or to portions of the extremities on one side; lesions are often extensive, forming wave-like bands on the trunk and spiraling streaks on the extremities. Synonym: linear epidermal nevus. (05 Mar 2000) |
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