Jul 11, 2020 15:20
3 yrs ago
11 viewers *
English term
Percent signal ghosting
English to Russian
Medical
Medical: Instruments
There are seven quantitative tests made using measurements on the digital data. They are:
1. Geometric accuracy
2. High contrast spatial resolution
3. Slice thickness accuracy
4. Slice position accuracy
5. Image intensity uniformity
6. Percent signal ghosting
7. Low contrast object detectability
1. Geometric accuracy
2. High contrast spatial resolution
3. Slice thickness accuracy
4. Slice position accuracy
5. Image intensity uniformity
6. Percent signal ghosting
7. Low contrast object detectability
Proposed translations
(Russian)
| 4 | процентный уровень ложного сигнала ("призрака") |
hawkwind
|
| 3 +1 | процентная степень смазанности сигнала |
mk_lab
|
| 3 | доля артефактов изображения в процентах |
svetlana cosquéric
|
Change log
Jul 11, 2020 15:20: changed "Kudoz queue" from "In queue" to "Public"
Proposed translations
21 hrs
Selected
процентный уровень ложного сигнала ("призрака")
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.
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.
4 KudoZ points awarded for this answer.
+1
47 mins
процентная степень смазанности сигнала
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).
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).
1 day 23 hrs
svetlana cosquéric
France
France
Native in Russian
France
Engineering, medicine, chemistry
Native in: Russian 
Works in: Russian to English, English to Russian, French to Russian
Related KudoZ points
:
75
доля артефактов изображения в процентах
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...
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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