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Method for distinguishing between calcified atherosclerotic tissue and fibrous atherosclerotic tissue or normal cardiovascular tissue using Raman spectroscopy

机译:用拉曼光谱法区分钙化动脉粥样硬化组织和纤维状动脉粥样硬化组织或正常心血管组织的方法

摘要

A method for distinguishing between calcified atherosclerotic tissue and either fibrous atherosclerotic tissue or normal cardiovascular tissue. The present method is based on the discovery that, when irradiated with a beam of monochromatic infrared light, calcified atherosclerotic human aortic tissue produces a Fourier Transform Raman spectrum which is distinguishable from analagous spectra obtained from fibrous atherosclerotic human aortic tissue and normal human aortic tissue. Some salient differences in the respective Raman spectra are the presence of five Raman bands at Raman shifts of 957, 1071, 1262-1300, 1445, and 1659 cm.sup.-1 (.+-.4 cm.sup.-1 for all shifts) for the calcified tissue as compared to three Raman bands at Raman shifts of 1247- 1270, 1453 and 1659 cm.sup.-1 (.+-.4 cm.sup.-1 for all shifts) for the fibrous tissue and three Raman bands at Raman shifts of 1247-1270, 1449 and 1651 cm.sup.-1 (. +-.4 cm.sup.-1 for all shifts) for the normal tissue. In addition, it was discovered that the ratios of intensities for the Raman bands at 1659 and 1453 cm.sup.-1 and at 1254 and 1453 cm.sup.-1 were 0.69 and 0.53, respectively, for the calcified tissue, 1.02 and 0.85, respectively, for the fibrous tissue and 1.2 and 0.83, respectively, for the normal tissue.
机译:一种区分钙化的动脉粥样硬化组织和纤维状动脉粥样硬化组织或正常心血管组织的方法。本方法基于以下发现:当用单色红外光束照射时,钙化的动脉粥样硬化人主动脉组织产生傅立叶变换拉曼光谱,该光谱可与从纤维性动脉粥样硬化的人主动脉组织和正常人的主动脉组织获得的光谱相区别。各个拉曼光谱的一些显着差异是在957、1071、1262-1300、1445和1659 cm.sup.-1(。+-。4 cm.sup.-1的拉曼位移处存在五个拉曼谱带)钙化组织的所有拉曼谱带与纤维组织的1247-1270、1453和1659 cm.sup.-1的三个拉曼带(所有移位的。+-。4 cm.sup.-1)相比对于正常组织,三个拉曼带的拉曼位移为1247-1270、1449和1651 cm.sup.-1(所有位移为。+-。4 cm.sup.-1)。另外,发现钙化组织在1659和1453cm-1处和在1254和1453cm-1处的拉曼谱带的强度比分别为0.69和0.53。纤维组织分别为0.85和正常组织分别为1.2和0.83。

著录项

  • 公开/公告号US5293872A

    专利类型

  • 公开/公告日1994-03-15

    原文格式PDF

  • 申请/专利权人 ALFANO;ROBERT R.;LIU;CHENG H.;

    申请/专利号US19910678637

  • 发明设计人 CHENG H. LIU;ROBERT R. ALFANO;

    申请日1991-04-03

  • 分类号A61B6/00;

  • 国家 US

  • 入库时间 2022-08-22 04:32:06

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