Evidence map›Paper›PMID 22693951›Full record

ArticlePhotomedicine and laser surgery2012

Discrimination of basal cell carcinoma and melanoma from normal skin biopsies in vitro through Raman spectroscopy and principal component analysis.

Benito Bodanese, Fabrício Luiz Silveira, Renato Amaro Zângaro, Marcos Tadeu T Pacheco, Carlos Augusto Pasqualucci, Landulfo Silveira

Open access · greenAbstract read
In one paragraph

Article in Photomedicine and laser surgery, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 71 citations in OpenAlex.

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  18. Emerging imaging technologies in dermatology: Part I: Basic principles.Journal of the American Academy of Dermatology · 2019
    Review
  19. Raman Spectroscopy and Imaging for Cancer Diagnosis.Journal of healthcare engineering · 2018
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Benito BodaneseHealth Sciences Center - CCS, Universidade Comunitária Regional de Chapecó - UNOCHAPECÓ, Chapecó, Brazil.
Fabrício Luiz Silveira
Renato Amaro Zângaro
Marcos Tadeu T Pacheco
Carlos Augusto Pasqualucci
Landulfo Silveira
Universidade Brasil · BRCommunity University of Chapecó Region - Unochapecó · BRHospital Universitário da Universidade de São Paulo · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveRaman spectroscopy has been employed to discriminate between malignant (basal cell carcinoma [BCC] and melanoma [MEL]) and normal (N) skin tissues in vitro, aimed at developing a method for cancer diagnosis. BACKGROUND DATA: Raman spectroscopy is an analytical tool that could be used to diagnose skin cancer rapidly and noninvasively.

methodsSkin biopsy fragments of ≈ 2 mm(2) from excisional surgeries were scanned through a Raman spectrometer (830 nm excitation wavelength, 50 to 200 mW of power, and 20 sec exposure time) coupled to a fiber optic Raman probe. Principal component analysis (PCA) and Euclidean distance were employed to develop a discrimination model to classify samples according to histopathology. In this model, we used a set of 145 spectra from N (30 spectra), BCC (96 spectra), and MEL (19 spectra) skin tissues.

resultsWe demonstrated that principal components (PCs) 1 to 4 accounted for 95.4% of all spectral variation. These PCs have been spectrally correlated to the biochemicals present in tissues, such as proteins, lipids, and melanin. The scores of PC2 and PC3 revealed statistically significant differences among N, BCC, and MEL (ANOVA, p<0.05) and were used in the discrimination model. A total of 28 out of 30 spectra were correctly diagnosed as N, 93 out of 96 as BCC, and 13 out of 19 as MEL, with an overall accuracy of 92.4%.

conclusionsThis discrimination model based on PCA and Euclidean distance could differentiate N from malignant (BCC and MEL) with high sensitivity and specificity.

Indexed as

BiopsyPrincipal Component AnalysisSpectrum Analysis, RamanBasal Cell CarcinomaDiagnosis, DifferentialHumansMelanomaSkinSkin Neoplasms

Identifiers

PMID22693951
PMCPMC3386005
OpenAlexW1994820604

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.