| 영문 | positron emission tomography | 한글 | 양전자방출 단층촬영 |
|---|---|---|---|
| 설명 | 핵의학적 진단방법중 하나. 가장 발달된 형태의 핵의학적 진단방법이다. 양전자를 방출함으로써 생기는 핵의학적 방사능을 이용하여 인체의 단면을 촬영할 수 있다. 이것은 마치 컴퓨터단층촬영과 유사하나, 조영제와 X-선을 사용하지 않는다는 점에서 다르다. 이용하는 핵의학적 물질을 인체내에서 대사가능한 물질(예를 들어 포도당, 혹은 지방)에 붙여서 사용함으로써, 실제적으로 살아있는 생체내에서 어떤 형태로 대사가 이루어지는 지 알아낼 수도 있다. 예를 들면, 눈을 뜨고 어떤 물체를 주시할 때, 뇌의 어떤 부위가 가장 활발한 대사작용을 하는지 알 수 있다. |
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| 영문 | computed tomography(CT) | 한글 | 전산화단층촬영법 |
|---|---|---|---|
| 설명 | 폭이 좁은 X-선을 이용하여 인체의 주위를 360도 돌아가면서 투사하여 여기서 나온 정보를 검출기가 모아서 컴퓨터로 계산을 하여 인체의 단면 영상을 보여주는 촬영법. |
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| PET | Positron Emission Tomography |
|---|---|
| PET | peak ejection time; polyethylene terphthalate; poor exercise tolerance; positron emission tomography... |
| PETT | pendular eye-tracking test; positron emission transverse tomography |
| CCT | carotid compression tomography; central conduction time; cerebrocranial trauma; chocolate-coated tab... |
| PCT | peripheral carcinoid tumor; plasma clotting time; plasmacrit test; plasmacytoma; polychlorinated tri... |
| FDG PET | 2-(18)fluoro-2-deoxy-D-glucose positron emission tomography |
|---|---|
| FDG PET | F-18-fluorodeoxyglucose positron emission tomography |
| FDG-PET | Fluorodeoxy-glucose-positron emission tomography |
| PET | Positron Emission Computed Tomography |
| PET | Positron Emission Tomographic |
| positron emission tomography | <radiology> A highly specialised research imaging technique using short lived radioactive substances - usually those made with a cyclotron. This technique is very sensitive in picking up active tumour tissue but does not measure the size of it. Tomographic images are formed by computer analysis of photons detected from annihilation of positrons emitted by radionuclides incorporated into biochemical substances; the images, often quantitated with a colour scale, show the uptake and distribution of the substances in the tissue, permitting analysis and localization of metabolic and physiological function. Because the half-lives of the radionuclides are so short (20 minutes to 2 hours), and the equipment expensive, PET is rarely used in a clinical setting. But since its development in the mid-1970s, it has proved the most important tool yet devised for experimental investigation of the living brain, whether healthy, traumatised, or diseased. With CT and MRI, it represents a new generation of computer imaging techniques that have revolutionised medicine and physiology. Acronym: PET (20 Jun 2000) |
|---|---|
| single photon emission computed tomography | <radiology> Tomographic imaging of metabolic and physiological functions in tissues, the image being formed by computer synthesis of photons of a single energy emitted by radionuclides administered in suitable form to the patient. The method uses radionuclides which emit a single photon of a given energy. The camera is then rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer then reconstructs the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the target area scanned. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as the size and volume of the organ. The disadvantage is that, unlike positron emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of available photons and hence degrades the image. Acronym: SPECT (20 Jun 2000) |
| emission-computed tomography | <radiology> Tomography using emissions from radionuclides and a computer algorithm to reconstruct the image. (20 Jun 2000) |
| see | 1. To perceive by the eye; to have knowledge of the existence and apparent qualities of by the organs of sight; to behold; to descry; to view. "I will new turn aside, and see this great sight." (Ex. Iii. 3) 2. To perceive by mental vision; to form an idea or conception of; to note with the mind; to observe; to discern; to distinguish; to understand; to comprehend; to ascertain. "Go, I pray thee, see whether it be well with thy brethren." (Gen. Xxxvii. 14) "Jesus saw that he answered discreetly." (Mark xii. 34) "Who 's so gross That seeth not this palpable device?" (Shak) 3. To follow with the eyes, or as with the eyes; to watch; to regard attentivelly; to look after. "I had a mind to see him out, and therefore did not care for centradicting him." (Addison) 4. To have an interview with; especially, to make a call upon; to visit; as, to go to see a friend. "And Samuel came no more to see Saul untill the day of his death." (1 Sam. Xv. 35) 5. To fall in with; to have intercourse or communication with; hence, to have knowledge or experience of; as, to see military service. "Make us glad according to the days wherein thou hast afflicted us, and the years wherein we have seen evil." (Ps. Xc. 15) "Verily, verily, I say unto you, if a man keep my saying, he shall never see death." (John viii. 51) "Improvement in visdom and prudence by seeing men." (Locke) 6. To accompany in person; to escort; to wait upon; as, to see one home; to see one aboard the cars. God you (him, or me, etc) see, God keep you (him, me, etc) in his sight; God protect you. To see (anything) out, to see (it) to the end; to be present at, or attend, to the end. To see stars, to see flashes of light, like stars; sometimes the result of concussion of the head. To see (one) through, to help, watch, or guard (one) to the end of a course or an undertaking. Origin: OE. Seen, sen, seon, As. Seon; akin to OFries. Sia, D. Zien, OS. & OHG. Sehan, G. Sehen, Icel. Sja, Sw. Se, Dan. See, Goth. Saihwan, and probably to L. Sequi to follow (and so originally meaning, to follow with the eyes). Gr, Skr. Sac. Cf. Sight, Sun to follow. 1. To have the power of sight, or of perceiving by the proper organs; to possess or employ the sense of vision; as, he sees distinctly. "Whereas I was blind, now I see." (John ix. 25) 2. Figuratively: To have intellectual apprehension; to perceive; to know; to understand; to discern; often followed by a preposition, as through, or into. "For judgment I am come into this world, that they which see not might see; and that they which see might be made blind." (John ix. 39) "Many sagacious persons will find us out, . . . And see through all our fine pretensions." (Tillotson) 3. To be attentive; to take care; to give heed; generally with to; as, to see to the house. "See that ye fall not out by the way." (Gen. Xiv. 24) Let me see, Let us see, are used to express consideration, or to introduce the particular consideration of a subject, or some scheme or calculation. "Cassio's a proper man, let me see now, - To get his place." (Shak) See is sometimes used in the imperative for look, or behold. "See. See! upon the banks of Boyne he stands." To see about a thing, to pay attention to it; to consider it. To see on, to look at. "She was full more blissful on to see." . To see to. To look at; to behold; to view. "An altar by Jordan, a great altar to see to" . To take care about; to look after; as, to see to a fire. 1. A seat; a site; a place where sovereign power is exercised. "Jove laughed on Venus from his sovereign see." (Spenser) 2. Specifically: The seat of episcopal power; a diocese; the jurisdiction of a bishop; as, the see of new York. The seat of an archibishop; a province or jurisdiction of an archibishop; as, an archiepiscopal see. The seat, place, or office of the pope, or Roman pontiff; as, the papal see. The pope or his court at Rome; as, to appeal to the see of Rome. Apostolic see. See Apostolic. Origin: OE. Se, see, OF. Se, sed, sied, fr. L. Sedes a seat, or the kindred sedere to sit. See Sit, and cf. Siege. Source: Websters Dictionary (01 Mar 1998) |
| positron | A subatomic particle of mass and charge equal to the electron but of opposite (i.e., positive) charge. Synonym: positive electron. (05 Mar 2000) |
| bonding, human-pet | The emotional attachment of individuals to pets. (12 Dec 1998) |
| PET | <radiology> A highly specialised research imaging technique using short lived radioactive substances - usually those made with a cyclotron. This technique is very sensitive in picking up active tumour tissue but does not measure the size of it. Tomographic images are formed by computer analysis of photons detected from annihilation of positrons emitted by radionuclides incorporated into biochemical substances; the images, often quantitated with a colour scale, show the uptake and distribution of the substances in the tissue, permitting analysis and localization of metabolic and physiological function. Because the half-lives of the radionuclides are so short (20 minutes to 2 hours), and the equipment expensive, PET is rarely used in a clinical setting. But since its development in the mid-1970s, it has proved the most important tool yet devised for experimental investigation of the living brain, whether healthy, traumatised, or diseased. With CT and MRI, it represents a new generation of computer imaging techniques that have revolutionised medicine and physiology. Acronym: PET (20 Jun 2000) |
| PET scan | Positron Emission Tomography. A scanning device which uses low-dose radioactive sugar to measure brain activity. This is a limited-use diagnostic tool. (16 Dec 1997) |
| computed tomography | <investigation, procedure, radiology> A special radiographic technique that uses a computer to assimilate multiple X-ray images into a 2 dimentional cross-sectional image. This can reveal many soft tissue structures not shown by conventional radiography. Scans may also be dynamic in which a movement of a dye is tracked. Cuts may be 5 or 10 mm apart or, in some instances even further apart. A special dye material may be injected into the patients vein prior to the scan to help differentiate abnormal tissue and vasculature. The machine rotates 180 |
| computerised axial tomography | Cat scanning adds X-ray images with the aid of a computer to generate cross-sectional views anatomy. It can identify normal and abnormal structures and be used to guide procedures. CAT scanning is painless. Iodine-containing contrast material is sometimes used in CAT scanning. If you are having a CAT scan and are allergic to iodine or contrast materials, you should notify your physicians and radiology staff. (12 Dec 1998) |
| computerised tomography | <investigation, procedure, radiology> A special radiographic technique that uses a computer to assimilate multiple X-ray images into a 2 dimentional cross-sectional image. This can reveal many soft tissue structures not shown by conventional radiography. Scans may also be dynamic in which a movement of a dye is tracked. Cuts may be 5 or 10 mm apart or, in some instances even further apart. A special dye material may be injected into the patients vein prior to the scan to help differentiate abnormal tissue and vasculature. The machine rotates 180 |
| conventional tomography | <procedure, radiology> The recording of internal body images at a predetermined plane by means of the tomograph, also called body section roentgenography. Origin: Gr. Graphein = to write (18 Nov 1997) |
| helical computed tomography | <radiology> Computed tomography in which the X-ray tube continuously revolves around the patient, who is simultaneously moved longitudinally; computer interpolation allows reconstruction of standard transverse scans or images in any preferred plane. Synonym: helical computed tomography, helical CT, spiral CT. (20 Jun 2000) |
| X-ray computed tomography | <radiology> Tomography using X-ray transmission and a computer to reconstruct the image. See: computed tomography. (20 Jun 2000) |
| high resolution computed tomography | Computed tomography with narrow collimation to reduce volume-averaging and an edge-enhancing reconstruction algorithm to sharpen the image, sometimes with a restricted field of view to minimise the size of pixels in the region imaged; used particularly for lung imaging. Hypocycloidal tomography, body section radiography using a complex film and tube motion with a pattern resembling a three-leaf clover. (05 Mar 2000) |
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|
제품명 |
판매사 |
보험코드 | 성분/함량 | 구분/보험급여 |
|---|