PET-CT (original) (raw)
PET/CT je diagnostická zobrazovací metoda spojující vyšetření počítačovou tomografií (CT) a pozitron emisní tomografií (PET). Získané obrazy obsahují jak poměrně podrobnou informaci o anatomické stavbě, tak i informaci o metabolické aktivitě tkání.
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| dbo:abstract | PET/CT je diagnostická zobrazovací metoda spojující vyšetření počítačovou tomografií (CT) a pozitron emisní tomografií (PET). Získané obrazy obsahují jak poměrně podrobnou informaci o anatomické stavbě, tak i informaci o metabolické aktivitě tkání. (cs) Positron emission tomography–computed tomography (better known as PET-CT or PET/CT) is a nuclear medicine technique which combines, in a single gantry, a positron emission tomography (PET) scanner and an x-ray computed tomography (CT) scanner, to acquire sequential images from both devices in the same session, which are combined into a single superposed (co-registered) image. Thus, functional imaging obtained by PET, which depicts the spatial distribution of metabolic or biochemical activity in the body can be more precisely aligned or correlated with anatomic imaging obtained by CT scanning. Two- and three-dimensional image reconstruction may be rendered as a function of a common software and control system. PET-CT has revolutionized medical diagnosis in many fields, by adding precision of anatomic localization to functional imaging, which was previously lacking from pure PET imaging. For example, many diagnostic imaging procedures in oncology, surgical planning, radiation therapy and cancer staging have been changing rapidly under the influence of PET-CT availability, and centers have been gradually abandoning conventional PET devices and substituting them by PET-CTs. Although the combined/hybrid device is considerably more expensive, it has the advantage of providing both functions as stand-alone examinations, being, in fact, two devices in one. The only other obstacle to the wider use of PET-CT is the difficulty and cost of producing and transporting the radiopharmaceuticals used for PET imaging, which are usually extremely short-lived. For instance, the half-life of radioactive fluorine-18 (18F) used to trace glucose metabolism (using fluorodeoxyglucose, FDG) is only two hours. Its production requires a very expensive cyclotron as well as a production line for the radiopharmaceuticals. At least one PET-CT radiopharmaceutical is made on site from a generator: Ga-68 from a gallium-68 generator. PET-MRI, like PET-CT, combines modalities to produce co-registered images. (en) 양전자 방출 컴퓨터 단층 촬영기(Positron emission tomography-computed tomography)(PET-CT, PET/CT로 많이 알려져 있다)는 PET 스캐너와 x-ray computed tomography(CT)를 하나의 ( gantry system)으로 결합한 기기를 이용한 의학 영상 기술로, 두 기계로부터 얻어진 이미지들을 연속적으로 모으고, 하나의 중첩된 이미지로 나타낸다. 그러므로 PET로부터 얻어진 ( functional image)들은 신체의 신진 대사나 생화학적 활동의 공간적 분포에 대해서 보여주는데, CT 스캐닝으로 얻은 이미지 보다 훨씬 정확하게 배치 되어있고 해부학적 이미지와 연관 된다. 2차원, 3차원 이미지 복구는 일반적인 소프트웨어와 제어 시스템 기능으로 재구성하여 보여준다. PET-CT는 기능적 이미지에 해부학적 위치의 예측을 더하면서 많은 분야의 의학 진단에 있어서 혁신을 가져다 주었다. 이 점은 이전의 순수 PET 영상에서는 없던 것이다. 예를 들어 종양학( oncology), 수술 계획(surgical planning), 방사선 치료(radiation therapy), ( cancer staging) 등 많은 영상 진단 절차에서 PET-CT가 가능해 짐에 따라 급속하게 변화되고 있고, 센터들은 점진적으로 종래의 PET 기계는 버리고, PET-CT로 대체하고 있다. 비록 이 기기가 훨씬 더 비싸지만, 사실상 두 기기의 기능이 하나로 합쳐진 독립형 검사로, 두 가지 기능을 모두 쓸 수 있는 장점이 있다. PET-CT가 널리 사용되는 데 있어서 장애가 되는 단 한 가지는 PET-CT 이미징에 쓰이는 ( radiopharmaceuticals)을 생산하고 운반할 때의 어려움과 비용이다. 이것은 보통 오래 지속되지가 않는다. (예를 들어 글루코스의 신진 대사를 추적하기 위해 사용되는 방사성 동위원소 F-18 (fluorodeoxyglucose, FDG를 쓴다)의 반감기( half-life)는 두 시간 밖에 안 된다). 이 방사선 의약품이 반감기가 짧아 생산하는 데에도 비싸지만 제조하는 장치도 매우 값비싼 입자 가속기의 일종인 ( cyclotron)을 필요로 하기 때문에 비용이 많이 든다. PET-MRI도 PET-CT와 같이 (modality)를 합쳐서 중첩된 이미지를 얻는 것이다. (ko) TEP-TC que é o acrónimo de Tomografia por emissão de positrões-Tomografia computadorizada, também conhecido por TEP/SCAN, - em inglês: PET-CT - é na realidade um equipamento que une os recursos diagnósticos da Medicina Nuclear (TEP) e da Radiologia (TC). O aparelho sobrepõe as imagens metabólicas do TEP às imagens anatômicas do TC produzindo assim um terceiro tipo de imagem. (pt) PET-CT（Positron emission tomography–computed tomography；PET-CT；PET/CT）全称“正电子发射断层扫描/X射线计算机断层成像 ”，是筛查全身早期肿瘤的方法。它将PET和CT两个设备有机结合起来，同时具有两者的功能。 (zh) |
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| dbp:caption | A complete body PET / CT Fusion image (en) |
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| rdfs:comment | PET/CT je diagnostická zobrazovací metoda spojující vyšetření počítačovou tomografií (CT) a pozitron emisní tomografií (PET). Získané obrazy obsahují jak poměrně podrobnou informaci o anatomické stavbě, tak i informaci o metabolické aktivitě tkání. (cs) TEP-TC que é o acrónimo de Tomografia por emissão de positrões-Tomografia computadorizada, também conhecido por TEP/SCAN, - em inglês: PET-CT - é na realidade um equipamento que une os recursos diagnósticos da Medicina Nuclear (TEP) e da Radiologia (TC). O aparelho sobrepõe as imagens metabólicas do TEP às imagens anatômicas do TC produzindo assim um terceiro tipo de imagem. (pt) PET-CT（Positron emission tomography–computed tomography；PET-CT；PET/CT）全称“正电子发射断层扫描/X射线计算机断层成像 ”，是筛查全身早期肿瘤的方法。它将PET和CT两个设备有机结合起来，同时具有两者的功能。 (zh) Positron emission tomography–computed tomography (better known as PET-CT or PET/CT) is a nuclear medicine technique which combines, in a single gantry, a positron emission tomography (PET) scanner and an x-ray computed tomography (CT) scanner, to acquire sequential images from both devices in the same session, which are combined into a single superposed (co-registered) image. Thus, functional imaging obtained by PET, which depicts the spatial distribution of metabolic or biochemical activity in the body can be more precisely aligned or correlated with anatomic imaging obtained by CT scanning. Two- and three-dimensional image reconstruction may be rendered as a function of a common software and control system. (en) 양전자 방출 컴퓨터 단층 촬영기(Positron emission tomography-computed tomography)(PET-CT, PET/CT로 많이 알려져 있다)는 PET 스캐너와 x-ray computed tomography(CT)를 하나의 ( gantry system)으로 결합한 기기를 이용한 의학 영상 기술로, 두 기계로부터 얻어진 이미지들을 연속적으로 모으고, 하나의 중첩된 이미지로 나타낸다. 그러므로 PET로부터 얻어진 ( functional image)들은 신체의 신진 대사나 생화학적 활동의 공간적 분포에 대해서 보여주는데, CT 스캐닝으로 얻은 이미지 보다 훨씬 정확하게 배치 되어있고 해부학적 이미지와 연관 된다. 2차원, 3차원 이미지 복구는 일반적인 소프트웨어와 제어 시스템 기능으로 재구성하여 보여준다. (ko) |
| rdfs:label | PET/CT (cs) 양전자 방출 컴퓨터 단층 촬영기 (ko) PET-CT (en) TEP-TC (pt) PET-CT (zh) |
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