调谐孔径计算断层摄影术的定性近红外血管成像系统。

Qualitative near-infrared vascular imaging system with tuned aperture computed tomography.

机构信息

Kanazawa University, Graduate School of Medical Science, Division of Health Science, 5-11-80 Kodatsuno, Kanazawa, 920-0942, Japan.

出版信息

J Biomed Opt. 2011 Jul;16(7):076004. doi: 10.1117/1.3595424.

DOI:10.1117/1.3595424

PMID:21806265

Abstract

We developed a novel system for imaging and qualitatively analyzing the surface vessels using near-infrared (NIR) radiation using tuned aperture computed tomography (TACT(®)). The system consisted of a NIR-sensitive CCD camera surrounded by sixty light emitting diodes (with wavelengths alternating between 700 or 810 nm). This system produced thin NIR tomograms, under 0.5 mm in slice thickness. The venous oxygenation index reflecting oxygen saturation levels calculated from NIR tomograms was more sensitive than that from the NIR images. This novel system makes it possible to noninvasively obtain NIR tomograms and accurately analyze changes in oxygen saturation.

摘要

我们开发了一种使用近红外（NIR）辐射的新型系统，通过调谐孔径计算机断层扫描（TACT(®)）对表面血管进行成像和定性分析。该系统由一个 NIR 敏感的 CCD 相机和六十个发光二极管组成（波长在 700nm 或 810nm 之间交替）。该系统产生的 NIR 断层厚度小于 0.5mm。从 NIR 断层图中计算出的静脉氧合指数反映了氧饱和度水平，比从 NIR 图像中计算出的更为敏感。这种新型系统可以无创地获得 NIR 断层图像，并准确分析氧饱和度的变化。