Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2017 Apr 12;7:845. doi: 10.1038/s41598-017-00995-y

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

PMC Copyright notice

(a) The first to fourth principal components of training dataset composed of 1000 peripheral nerve spectra, 1000 connective tissue spectra, and 1000 skeletal muscle tissue spectra (s _PC1 to s _PC4). Horizontal dashed lines indicate zero intensity for individual principal components. (b) Principal component regression coefficient plots of the training spectra. c _PC1, c _PC2, c _PC3, and c _PC4 are regression coefficients to the four principal components shown in (a) (s _PC1, s _PC2, s _PC3, and s _PC4, respectively). (c) Discriminant curves discriminating the Raman spectra groups of peripheral nerve from skeletal muscle tissues (left), peripheral nerve from connective tissues (middle), and connective tissues from skeletal muscle tissues (right) in the space of c _PC1 to c _PC2 plot. (d) A graph overlaying all the discriminant curves in (c) and three distinct areas assigned to nerve-positive prediction region (light red), connective-tissue-positive prediction region (dark yellow) and muscle-positive prediction region (light green). Individual areas were derived from the M/N and C/N discrimination curves, the C/N and C/M discrimination curves, and the M/N and C/M discrimination curves in (c), respectively. (e) Results of principal component regression of the 3840 test spectra with the four principal components shown in (a). The tissue-type partitions are overlaid. N: peripheral nerve bundle. C: connective tissue. M: skeletal muscle tissue.