Radiation Protection in X-Ray Computed Tomography: Literature Review
نویسندگان
چکیده
منابع مشابه
Radiation Protection in Computed Tomography.
Radiation exposure from computed tomography (CT) examinations has long been a concern. As part of their education, CT technologists learn the fundamentals of radiation interactions, dose, risk, and protection. Modern CT systems have evolved to include dose optimization features. This article reviews the fundamentals of radiation dose and introduces new CT dose optimization techniques.
متن کاملX-ray computed tomography.
X-ray computed tomography (CT), introduced into clinical practice in 1972, was the first of the modern slice-imaging modalities. To reconstruct images mathematically from measured data and to display and to archive them in digital form was a novelty then and is commonplace today. CT has shown a steady upward trend with respect to technology, performance and clinical use independent of predictio...
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Introduction: The basis of image formation in Computed Tomography (CT) lies in the x-ray linear attenuation coefficient of the scanned material. Compton scattering and photoelectric effect are the dominant interactions of the x-ray photons with the subject, in the range of diagnostic radiology. These two coefficients are important in tissue characterization by Dual-Energy CT (D...
متن کاملX-ray micro-computed tomography
Micro-computed tomography (μCT) has been successfully used to study the cardiovascular system of mouse embryos in situ. With the use of barium as a suitablecontrast agent, blood vessels have beenimaged and analysed quantitatively such asblood volume and vessel sizes on embryosof ages 14.5 to 16.5 days old. The advantageof using this imaging modality is that it hasprovide...
متن کاملAdaptive zooming in X-ray computed tomography.
BACKGROUND In computed tomography (CT), the source-detector system commonly rotates around the object in a circular trajectory. Such a trajectory does not allow to exploit a detector fully when scanning elongated objects. OBJECTIVE Increase the spatial resolution of the reconstructed image by optimal zooming during scanning. METHODS A new approach is proposed, in which the full width of the...
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ژورنال
عنوان ژورنال: International Journal of Radiology and Imaging Technology
سال: 2016
ISSN: 2572-3235
DOI: 10.23937/2572-3235.1510016