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Auxiliary Diagnosis of Papillary Thyroid Carcinoma Based on Spectral Phenotype

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Abstract

Thyroid cancer, a common endocrine malignancy, is one of the leading death causes among endocrine tumors. The diagnosis of pathological section analysis suffers from diagnostic delay and cumbersome operating procedures. Therefore, we intend to construct the models based on spectral data that can be potentially used for rapid intraoperative papillary thyroid carcinoma (PTC) diagnosis and characterize PTC characteristics. To alleviate any concerns pathologists may have about using the model, we conducted an analysis of the used bands that can be interpreted pathologically. A spectra acquisition system was first built to acquire spectra of pathological section images from 91 patients. The obtained spectral dataset contains 217 spectra of normal thyroid tissue and 217 spectra of PTC tissue. Clinical data of the corresponding patients were collected for subsequent model interpretability analysis. The experiment has been approved by the Ethics Review Committee of the Wuhu Hospital of East China Normal University. The spectral preprocessing method was used to process the spectra, and the preprocessed signal respectively optimized by the first and secondary informative wavelengths selection was used to develop the PTC detection models. The PTC detection model using mean centering (MC) and multiple scattering correction (MSC) has optimal performance, and the reasons for the good performance were analyzed in combination with the spectral acquisition process and composition of the test slide. For model interpretable analysis, the near-ultraviolet band selected for modeling corresponds to the location of amino acid absorption peak, and this is consistent with the clinical phenomenon of significantly lower amino acid concentrations in PTC patients. Moreover, the absorption peak of hemoglobin selected for modeling is consistent with the low hemoglobin index in PTC patients. In addition, the correlation analysis was performed between the selected wavelengths and the clinical data, and the results show: the reflection intensity of selected wavelengths in normal cells has a moderate correlation with cell arrangement structure, nucleus size and free thyroxine (FT4), and has a strong correlation with triiodothyronine (T3); the reflection intensity of selected bands in PTC cells has a moderate correlation with free triiodothyronine (FT3).

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Data Availability Statement

The relevant thyroid spectrum dataset has been deposited in figshare (https://figshare.com). The project DOI is https://doi.org/10.6084/m9.figshare.21579546.

Abbreviations

PTC:

Papillary thyroid carcinoma

NIR:

Near infrared

HE:

Hematoxylin-eosin

SVM:

Support vector machines

CARS:

Competitive adaptive reweighted sampling

FD:

First derivative

SD:

Second derivative

SG:

Savitzky–Golay

MC:

Mean centering

SNV:

Standard normal variate

MSC:

Multiplicative scatter correction

PLS:

Partial least squares

RMSECV:

Root mean square error of cross validation

T3:

Triiodothyronine

T4:

Tetraiodothyronine

FT3:

Free triiodothyronine

FT4:

Free thyroxine

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Funding

This work was supported by the grant awarded by the National Natural Science Foundation of China (No. 62225112; No. 61831015), and the key research and development project of Anhui Province (No. 202104j07020059).

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Authors and Affiliations

Authors

Contributions

BLZ contributed to literature searching and wrote the manuscript. BLZ, Y Wang, and MHH designed the experiments and interpreted the results of the manuscript. BLZ, Y Wang, MHH, Y Wu, JNL, QLL, MD, WQS, and GTZ supervised the study and revised the manuscript. All authors read and approved the final manuscript.

Corresponding authors

Correspondence to Menghan Hu or Min Dai.

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Conflict of Interest

The authors declare that they have no competing interests.

Ethical Approval

The study had passed the Ethical Review of the Medical Ethics Committee of the Second People's Hospital of Wuhu, which agreed to the implementation of the study.

Consent to Participate

Written informed consent was obtained from all the participants.

Consent for Publication

All the participants approved to publish.

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Zhao, B., Wang, Y., Hu, M. et al. Auxiliary Diagnosis of Papillary Thyroid Carcinoma Based on Spectral Phenotype. Phenomics 3, 469–484 (2023). https://doi.org/10.1007/s43657-023-00113-1

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  • DOI: https://doi.org/10.1007/s43657-023-00113-1

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