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Ex vivo визуализация глиальных опухолей головного мозга человека с помощью кросс-поляризационной оптической когерентной томографии: первые результаты

Ex vivo визуализация глиальных опухолей головного мозга человека с помощью кросс-поляризационной оптической когерентной томографии: первые результаты

Abstract

Оптическая когерентная томография (ОКТ) становится перспективным методом оптической диагностики в нейроонкологии. В настоящей работе представлены первые результаты исследования глиальных опухолей человека различной степени злокачественности методом кросс-поляризационной ОКТ (КП ОКТ), позволяющим регистрировать изменения рассеяния и поляризации света при прохождении через ткань и получать более широкий спектр информации о структуре опухоли по сравнению с традиционной ОКТ. Цель исследования оценить возможности метода КП ОКТ в визуализации глиальных опухолей головного мозга человека с разной степенью злокачественности. Материалы и методы. Исследование проведено на материале операционных биопсий (ex vivo образцы) от 18 пациентов с глиальными опухолями головного мозга разной степени злокачественности. На разработанном в Институте прикладной физики РАН (Нижний Новгород) скоростном спектральном КП ОКТ-устройстве было проанализировано 79 образцов ткани и получено 361 КП ОКТ-изображение. Полученные КП ОКТ-изображения сопоставляли с данными гистологического исследования. Плоскость КП ОКТ-сканирования эквидистантно совпадала с плоскостью гистологического среза. Результаты. Установлена связь характера КП ОКТ-изображений ткани мозга и глиальных опухолей с их морфологической структурой. Проведена сравнительная оценка ОКТ-сигнала от глиальных опухолей различной степени злокачественности и от неизмененной мозговой ткани. Заключение. Морфологические особенности белого вещества головного мозга и глиом различной степени злокачественности могут быть дифференцированы на КП ОКТ-изображениях по таким характеристикам ОКТ-сигнала, как его уровень, однородность и характер затухания.Optical coherence tomography (OCT) is a promising method of optical diagnostics in neurosurgery. This paper presents the initial results of using cross-polarization OCT (CP OCT) for the visualization of glioma tissue. CP OCT can detect the scattering and polarization properties of tissues and thereby provide more information about their structure than traditional OCT. The aim of the study was to evaluate the capabilities of CP OCT as an imaging tool for the visualization of glial tumors with different degrees of malignancy. Materials and Methods. The study was performed on material obtained from the intraoperative biopsies (ex vivo specimens) of 18 patients with gliomas ranging from Grade I to Grade IV. Seventy nine samples of tumor and non-tumor tissue were studied using the CP OCT device developed the Institute of Applied Physics of the Russian Academy of Sciences (Nizhny Novgorod, Russia). 361 CP OCT images were acquired and analyzed. They were compared with histological data seen in sections coincident with the planes of the OCT scans. Results. The correspondence between the CP OCT images of human brain tissue and glial tumors and their morphological features was determined. A comparative evaluation of the characteristics of the CP OCT signals of glial tumors Grade I-IV and non-cancerous brain tissue was carried out. Conclusion. The morphological features of white matter and glial tumors can be differentiated based on the intensity, homogeneity and attenuation of the CP OCT signals. The use of high-speed spectral CP OCT device appears to have great potential in the neurosurgery practice.

Keywords

КРОСС-ПОЛЯРИЗАЦИОННАЯ ОПТИЧЕСКАЯ КОГЕРЕНТНАЯ ТОМОГРАФИЯ,КП ОКТ,ГОЛОВНОЙ МОЗГ,ГЛИОМА,АСТРОЦИТОМА,ГЛИОБЛАСТОМА

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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