| 영문 | radiolucency | 한글 | 방사선투과성 |
|---|---|---|---|
| 설명 | X-선같은 방사선이 자유롭게 투과할 수 있는 성질을 지칭하는 말로 인체에서는 공기로 가득 차 있는 허파가 대표적인 방사선 투과성 장기에 해당되는데 필름에는 검게 나타난다. 그리고 이에 비해 방사선이 잘 투과하지 않는 경우 방사선비투과성(radiopacity)라고 한다. 이 경우 필름에는 희게 표시되는 데 뼈가 대표적인 경우이다. 방사선투과성에 따라 인체의 조직을 나누면 다음과 같은 순서이다. |
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| 영문 | radiopacity | 한글 | 방사선 불투과성 |
|---|---|---|---|
| 설명 | X-선 같은 방사선을 어떤 물질에 쪼일 때, 자유롭게 투과되지 않고 흡수되어 필름에는 희게 나타나는 경우를 말한다. 인체에서는 뼈와 같이 치밀한 구조물이 방사선 불투과성물질에 해당된다. 이에 비해 공기가 차 있는 폐와 같은 구조물은 필름상에서 검게 나타나는 데, 이것을 방사선투과성(radiolucency)이라고 한다. |
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| 영문 | radiopharmaceutical | 한글 | 방사성의약품 |
|---|---|---|---|
| 설명 | 진단 또는 치료적 목적으로 쓰이는 방사능을 지닌 의약품으로, 보통 어떤 약품이나 물질에 방사성 동위원소를 붙인 것이다. 예를 들어 갑상샘종의 진단을 위해 방사선동위원소인 요오드(I131)를 사용시 이를 말한다. |
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| 영문 | radiosensitivity | 한글 | 방사선민감성 |
|---|---|---|---|
| 설명 | 방사선 생물작용 특징의 하나이다. 방사선에 대한 생물작용에는 세포와 조직에 따라 차이가 있다. 예를 들어 같은 선질, 같은 선량의 방사선을 조사했어도, 점막이나 피부에는 반응이 나오나 뼈에는 반응이 없을 때, 점막이나 피부는 뼈에 비해 방사성 감수성이 높다고 말한다. 일반적으로 세포분열이 왕성한 것, 장차 분열의 기회가 많은 것, 미분화한 것일수록 감수성이 높다. |
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| 영문 | radium | 한글 | 라듐 |
|---|---|---|---|
| 설명 | 방사능을 지닌 원소기호 88번, Ra로 표기하는 화학적 원소로서, 반감기는 1662년이고, α, β 및 γ선을 방출한다. 라듐은 붕괴되어 라돈(radon)이 된다. 방사선 치료에 이용한다. |
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| radial immunodiffusion | <technique> A quantitative variation of immunodiffusion in which the agar gel contains evenly distributed antigen (or antibody) and its counterpart from the test sample diffuses into the gel from a single well resulting in a circular precipitin line around the sample well. The diameter of the precipitin ring is proportional to the concentration of the antibody (or antigen) present in the test sample. By comparing the diameter of the test specimen precipitin ring to known standards, a relatively insensitive estimation of the concentration of specific antibody or antigen can be achieved. (01 Dec 1998) |
|---|---|
| radial index artery | <anatomy, artery> Origin, radial; distribution, radial side of index finger. Synonym: arteria radialis indicis, arteria volaris indicis radialis, radial index artery. (05 Mar 2000) |
| radial keratotomy | A keratotomywith radial incisions around a clear central zone. A form of refractive keratoplasty used in the treatment of myopia. (05 Mar 2000) |
| radial nerve | <anatomy, nerve> A major nerve of the upper extremity. In humans the fibres of the radial nerve originate in the lower cervical and upper thoracic spinal cord (usually c5 to t1), travel via the posterior cord of the brachial plexus, and supply motor innervation to extensor muscles of the arm and cutaneous sensory fibres to extensor regions of the arm and hand. (12 Dec 1998) |
| radial notch | The concavity on the lateral aspect of the coronoid process of the ulna that articulates with the head of the radius. Synonym: incisura radialis. (05 Mar 2000) |
| radial phenomenon | Dorsal flexion of the hand occurring involuntarily with palmar flexion of the fingers. (05 Mar 2000) |
| radial ponderomotive force stabilisation | <radiobiology> In magnetic mirror devices, use of rf waves in the neighborhood of the ion cyclotron frequency to stabilise interchange modes. The radial ponderomotive force produced by a radial gradient in the applied rf electric field opposes the destabilising centrifugal force resulting from bad magnetic field curvature. The net particle current is in the direction that would result from field lines with good curvature, eliminating the drive for the interchange instability. (09 Oct 1997) |
| radial pulse | The pulse as appreciated at the radial artery usually in the wrist. (05 Mar 2000) |
| radial recurrent artery | <anatomy, artery> Origin, radial; distribution, ascends around lateral side of elbow joint; anastomoses, radial collateral, interosseous recurrent. Synonym: arteria recurrens radialis, recurrent radial artery. (05 Mar 2000) |
| radial reflex | On tapping the lower end of the radius, flexion of the forearm occurs, and sometimes, on strong percussion, flexion of the fingers. See: inverted radial reflex. (05 Mar 2000) |
| radial scar | A variant of sclerosing adenosis of the breast with central scar formation and radiating hyperplastic ducts. Synonym: radial scar. (05 Mar 2000) |
| radial sclerosing lesion | A variant of sclerosing adenosis of the breast with central scar formation and radiating hyperplastic ducts. Synonym: radial scar. (05 Mar 2000) |
| radial spoke | The structure that links the outer microtubule doublet of the ciliary axoneme with the sheath that surrounds the central pair of microtubules. The spokes are arranged periodically along the axoneme every 29nm, have a stalk about 32nm long and a bulbous region adjacent to the sheath. at least 17 different polypeptides are associated with the spokes. Spokes are thought to restrict the sliding of doublets relative to one another, digestion of the radial spokes will allow sliding apart of the doublets. (18 Nov 1997) |
| radial styloid tendovaginitis | Fibrosis of the sheath of a tendon of the thumb. Synonym: radial styloid tendovaginitis. (05 Mar 2000) |
| radial tuberosity | An oval projection from the medial surface of the radius just distal to the neck, giving attachment on its posterior half to the tendon of the biceps. Synonym: tuberositas radii, bicipital tuberosity, tuber radii, tuberosity of radius. (05 Mar 2000) |
Synonyms :
Synonyms : Hybrid Maps, Radiation, Hybrid, Radiation, Hybrids, Radiation, Map, Radiation Hybrid, Mapping, Radiation Hybrid, Radiation Hybrid, Radiation Hybrid Map
Synonyms : Injuries, Radiation, Injury, Radiation, Radiation Injury, Radiation Sicknesses, Radiation Syndromes, Sickness, Radiation, Sicknesses, Radiation, Syndrome, Radiation, Syndromes, Radiation
Synonyms : Experimental Radiation Injuries, Injuries, Experimental Radiation, Experimental Radiation Injury, Radiation Injury, Experimental
Synonyms : Leukemia Virus, Radiation, Leukemia Viruses, Radiation, Radiation Leukemia Viruses
| rad. |
a unit of absorbed ionizing radiation equal to 100 ergs per gram of irradiated material radian: the unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)
출처: wordnet.princeton.edu/perl/webwn
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| radiation |
energy that is radiated or transmitted in the form of rays or waves or particles the act of spreading outward from a central source radiation sickness: syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours; "he was suffering from radiation" the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay the spread of a group of organisms into new habitats a radial arrangement of nerve fibers connecting different parts of the brain radiotherapy: (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
출처: wordnet.princeton.edu/perl/webwn
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| radio frequency |
an electromagnetic wave frequency between audio and infrared
출처: wordnet.princeton.edu/perl/webwn
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| radio- |
medium for communication radio receiver: an electronic receiver that detects and demodulates and amplifies transmitted signals transmit messages via radio waves; "he radioed for help" a communication system based on broadcasting electromagnetic waves indicating radiation or radioactivity; "radiochemistry"
출처: wordnet.princeton.edu/perl/webwn
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| radio-opacity |
radiopacity: opacity to X-rays or other radiation
출처: wordnet.princeton.edu/perl/webwn
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| rad | the property of symmetry about an axis |
|---|---|
| rad | pneumatic tire that has radial-ply casing |
| rad | superficial veins ascending the radial side of the forearm |
| rad | of or relating to automobile tires that have a strip under the tread and relatively little stiffening in the sidewalls |
| rad | pneumatic tire that has radial-ply casing |
| rad | in a radial manner |
| rad | having a symmetrical arrangement of radiating parts about a central point |
| rad | the unit of plane angle adopted under the System International d'Unites |
| rad | the quality of being bright and sending out rays of light |
| rad | the amount of electromagnetic radiation leaving or arriving at a point on a surface |
| rad | an attractive combination of good health and happiness |
| rad | the quality of being bright and sending out rays of light |