Медицинская литература. Новинки

 

 

 

 

 

 

Тканевая контрастность, обусловленная магнитной восприимчивостью: применение в нейрорентгенологии

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Изображения, контрастность которых определяется магнитной восприимчивостью тканей, являются источником дополнительной полезной диагностической информации. Такую информацию получают с помощью появившихся в последнее время импульсных последовательностей (ИП) высокого разрешения SWI (Susceptibility Weighted Imaging) и SWAN (Т2Star Weighted Angiography), в основе которых лежит ИП градиентное эхо (Т2*GRE). В этой работе рассмотрены физические величины, характеризующие магнитные свойства ткани, а именно, магнитная восприимчивость, магнитная проницаемость и импульсные последовательности SWAN и SWI, а также применение ИП SWAN в нейрохирургической клинике.

Ключевые слова:
Магнитно-резонансная томография (МРТ), магнитные свойства тканей, магнитная восприимчивость, импульсные последовательности SWI, SWAN, нейрохирургия

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Tissue Contrast Based on Magnetic Susceptibility: Application in Neuroradiology

Tissue contrast based on magnetic susceptibility allows to get additional useful diagnostic information. New neuroimaging technology named susceptibility weighted imaging (SWI) and Т2-Star Weighted Angiography (SWAN) are the high resolution pulse sequences based on T2* Gradient Echo method. In this paper we review the physical principles, characterizing the magnetic properties of tissues, such as magnetic susceptibility and magnetic permeability, pulse sequences SWI and SWAN and application of SWAN in neurosurgical clinics.

Keywords:
Magnetic resonance imaging (MRI), tissue magnetic properties, magnetic susceptibility, magnetic permeability, pulse sequence, SWI, SWAN, neurosurgery.