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Magnetic Nuclear Hyperpolarization and Alternative Approaches for MRI Signal Amplificationтезисы доклада Тезисы
- Автор: Pirogov Yu A.
- Сборник: 17-th International School-Conference Magnetic resonance and its applications Spinus-2020 Proceedings
- Тезисы
- Год издания: 2020
- Место издания: Sain Petesburg State University Department of Nuclear Physics Research Methods Sain Petesburg, Russia
- Первая страница: 53
- Последняя страница: 55
- Аннотация: Magnetic resonance imaging in its current form was invented only 40 years ago and in 2003 was acknowledged by the Nobel Prize in medicine awarded to Paul Lauterbur (Stony Brook University, New-York, USA) and Peter Mansfield (Nottingham University, UK). In fact, the first proposal to use NMR for magnetic resonance visualization was made by a young officer of the Soviet Army Vladislav Ivanov 13 years before them. Unfortunately, the Moscow Patent Institute declined his patent at that time and only approved it in 1986, when MRI scanners were already in use in many clinics all over the world. Currently, no diagnosis of a serious health problem can be done without MRI diagnostics. The technology is very informative, especially when applied to the soft tissues of living organism (humans and animals). However a level of NMR signals forming the MRI image is quite low, and to increase the signal-to-noise ratio special methods of NMR response accumulation and digital processing of the images are used. As a consequence, acquiring a good quality image can take long time. The signal magnitude depends on the difference in population of the main level and of the excited level, where the nuclei of the magnetized ensemble are located after being excited by the radio-frequency radiation.
- Добавил в систему: Гуляев Михаил Владимирович