TO : KMLE 의학 검색 엔진 - 의학사전, 의학용어, 의학약어, 의학논문, 약품/의약품 검색

MeSH(Medical Subject Headings) 맞춤 검색 (http://www.nlm.nih.gov) 결과 : 5 페이지: 12

Tomography, Emission-Computed, Single-Photon - 새창 A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as 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 many available photons and hence degrades the image.
Synonyms : Emission-Computed Tomography, Single-Photon, Radionuclide Tomography, Single Photon Emission Computed, Single Photon Emission Computed Tomography, Tomography, Single-Photon Emission-Computed
Tomography, Optical - 새창 Projection of near-IR light (INFRARED RAYS), in the 700-1000 nm region, across an object in parallel beams to an array of sensitive photodetectors. This is repeated at various angles and a mathematical reconstruction provides three dimensional MEDICAL IMAGING of tissues. Based on the relative transparency of tissues to this spectra, it has been used to monitor local oxygenation, brain and joints.
Synonyms : Optical Tomography
Tomography, Optical Coherence - 새창 An imaging method using LASERS that is used for mapping subsurface structure. When a reflective site in the sample is at the same optical path length (coherence) as the reference mirror, the detector observes interference fringes.
Synonyms : OCT Tomography, Optical Coherence Tomography, Coherence Tomography, Optical, Tomography, OCT
Tomography, Spiral Computed - 새창 Computed tomography where there is continuous X-ray exposure to the patient while being transported through a rotating fan beam. This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography, where data is obtained and computed from individual sequential exposures.
Synonyms : Spiral Volumetric CT, Tomography, Spiral Volumetric Computed, CT, Helical, CT, Spiral, CT, Spiral Volumetric, CTs, Helical, CTs, Spiral, CTs, Spiral Volumetric, Computed Tomographies, Helical, Computed Tomographies, Spiral, Computed Tomography, Helical
Tomography, X-Ray - 새창 Tomography using x-ray transmission.
Synonyms : Radiographic Tomography, Tomography, Radiographic, Tomography, X Ray, Tomography, Xray, Transmission Tomography, X Ray Tomography, Xray Tomography