15:20 Jul 11, 2020 |
English to Russian translations [PRO] Medical - Medical: Instruments | |||||||
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| Selected response from: hawkwind Russian Federation Local time: 07:05 | ||||||
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Summary of answers provided | ||||
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3 +1 | процентная степень смазанности сигнала |
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4 | процентный уровень ложного сигнала ("призрака") |
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3 | доля артефактов изображения в процентах |
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percent signal ghosting процентная степень смазанности сигнала Explanation: степень смазанности МРТ-сигнала в процентах Т.е., процент растяжения/сокращения МРТ-сигнала из-за артефактов движения Ghosting (medical imaging) https://en.wikipedia.org/wiki/Ghosting_(medical_imaging) Ghosting is an artifact that occurs in MRI when the object is extended along the direction of motion. The errors that are caused in the Magnetic Resonance Imaging (MRI) as a consequence of environmental factors or human body (such as blood flow, implants etc.), is known as Ghosting. Ghosting is a multidimensional artifact that occurs in the MRI in the phase encoded direction (short axis of the image) after applying the Fourier Transform. When the phase of the magnetic resonance signal is being encoded into the 2-D or 3-D Fourier image, a mild deviation from the actual phase and amplitude may occur. This incompatibility of parameters is the cause of ghosting. The reasons for ghosting could be the physical factors such as temperature or humidity of the environment, movement caused by the patient or in the patient’s body. There are 2 types of movement that could result in ghosting as described below Магнитно-резонансная томография Артефакты в МРТ https://portal.edu.asu.ru/pluginfile.php/150790/mod_resource... Техническое качество МРТ изображения подразумевает отсутствие артефактов. Наиболее распространены: артефакты движения (смазанность) в связи с невозможностью пациента лежать неподвижно Анализ артефактов изображений в компьютерной томографии https://cyberleninka.ru/article/n/analiz-artefaktov-izobrazh... В области малого таза были обнаружены только артефакты, вызванные движением пациента (смазанное изображение). |
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percent signal ghosting процентный уровень ложного сигнала ("призрака") Explanation: The percent signal ghosting test assesses the *level* of ghosting A failure of this test means that there is signal ghosting at a level significantly higher than that observed in a properly functioning scanner. ...value for the ghosting, as a fraction of the primary signal, Using the system’s ROI tool, five intensity measurements are made: the average intensity in the primary image of the phantom, and the average intensity in the background at four locations outside of the phantom. ... So, two of the background ROIs will sample the ghost signal and two will be free of ghost signal. |
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percent signal ghosting доля артефактов изображения в процентах Explanation: процентная доля артефактов изображения https://www.cis.rit.edu/htbooks/mri/chap-11/chap-11-r.htm https://cyberleninka.ru/article/n/analiz-artefaktov-izobrazh... |
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