Automated classification pipeline for real-time in vivo examination of colorectal tissue using Raman spectroscopy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F24%3A43928850" target="_blank" >RIV/60461373:22340/24:43928850 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11110/24:10482402 RIV/00064165:_____/24:10482402

Result on the web

<a href="https://doi.org/10.1016/j.saa.2024.124152" target="_blank" >https://doi.org/10.1016/j.saa.2024.124152</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.saa.2024.124152" target="_blank" >10.1016/j.saa.2024.124152</a>

Result language

angličtina

Original language name

Automated classification pipeline for real-time in vivo examination of colorectal tissue using Raman spectroscopy

Original language description

Colorectal cancer is the third most common malignancy worldwide and one of the leading causes of death in oncological patients with its diagnosis typically involving confirmation by tissue biopsy. In vivo Raman spectroscopy, an experimental diagnostic method less invasive than a biopsy, has shown great potential to discriminate between normal and cancerous tissue. However, the complex and often manual processing of Raman spectra along with the absence of a suitable instant classifier are the main obstacles to its adoption in clinical practice. This study aims to address these issues by developing a real-time automated classification pipeline coupled with a user-friendly application tailored for non-spectroscopists. First, in addition to routine colonoscopy, 377 subjects underwent in vivo acquisitions of Raman spectra of healthy tissue, adenomatous polyps, or cancerous tissue, which were conducted using a custom-made microprobe. The spectra were then loaded into the pipeline and pre-processed in several steps, including standard normal variate transformation and finite impulse response filtration. The quality of the pre-processed spectral data was checked based on their signal-to-noise ratio before the suitable spectra were decomposed and classified using a combination of principal component analysis and a support vector machine, respectively. After five-fold cross-validation, the developed classifier exhibited 100% sensitivity toward adenocarcinoma and adenomatous polyps. The overall accuracy was 96.9% and 79.2% for adenocarcinoma and adenomatous polyps respectively. In addition, an application with a graphical user interface was developed to facilitate the use of our data pipeline by medical professionals in a clinical environment. Overall, the combination of supervised and unsupervised machine learning with algorithmic pre-processing of in vivo Raman spectra appears to be a viable way of reducing the relatively large number of biopsies currently needed to definitively diagnose colorectal cancer.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30204 - Oncology

Project

<a href="/en/project/NU20-09-00229" target="_blank" >NU20-09-00229: The development of novel analytical approaches for early diagnosis of adenomatous polyps and prevention of colorectal carcinoma</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY

ISSN

1386-1425

e-ISSN

1873-3557

Volume of the periodical

313

Issue of the periodical within the volume

15 May 2024

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

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UT code for WoS article

001218173000001

EID of the result in the Scopus database

2-s2.0-85188777109