Use of Fuzzy Logic in the Classification of Thyroid Nodules Detected by Ultrasonography

Author:

ANDRADE LUIS JESUINO DE OLIVEIRA1ORCID,DE OLIVEIRA LUÍSA CORREIA MATOS2ORCID,DE OLIVEIRA LUIS MATOS3ORCID,BITTENCOURT ALCINA MARIA VINHAES4ORCID,LOURENÇO LETÍCIA GÓES DE CARVALHO5,DE OLIVEIRA GABRIELA CORREIA MATOS6ORCID

Affiliation:

1. Departamento de Saúde da Universidade Estadual de Santa Cruz, Ilhéus -Bahia -Brasil.

2. Ecole Supériuere des Sciences et Technologies de I’Ingénie de Nancy – Polytech Nancy - France.

3. Faculdade de Medicina -Bahia -Brasil.

4. Faculdade de Medicina – Universidade Federal da Bahia – Salvador – Bahia – Brazil.

5. Faculdade Pernambucana de Saúde – Recife – Pernambuco – Brazil.

6. Faculdade de Medicina – UniFTC – Salvador – Bahia – Brazil.

Abstract

Abstract Objective Employ fuzzy logic to auxiliary in diagnosis and malignancy grade of thyroid nodules by ultrasound. Methods A cross-sectional study evaluating 75 exams results from patients with a thyroid nodule. The following ultrasound findings were evaluated employing a quantitative score: not suspicious, not very suspicious, moderately suspicious, and highly suspicious. The echographic features evaluated for suspicion of malignancy were based on the following nodule components: composition, echogenicity, shape, margin, and echogenic foci, graded using the Thyroid Imaging Data and Reporting System by the American College of Radiology. By combining ultrasound scoring and the Bethesda System for Reporting Thyroid Cytopathology using fuzzy logic, a classification for thyroid nodules was constructed. Results Hypoechogenicity and microcalcifications were the findings that showed the best interaction with malignancy on ultrasound, while shape and margin showed the smallest estimation errors when compared with composition. A classification for thyroid nodules was suggested based on the 95% confidence interval of hypoechogenicity and microcalcifications: not suspicious (< 24.6); not very suspicious (24.6–48.0); moderate (48.1–64.5); moderately suspicious (64.6–77.0); highly suspicious (77.1–92.7); and malignant (> 92.7). Conclusion By fuzzy logic, a classification for thyroid nodules diagnosed by ultrasound supported by echogenicity and nodular microcalcifications was constructed with a simple practical application.

Publisher

Research Square Platform LLC

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3