A Highly Reliable Convolutional Neural Network Based Soft Tissue Sarcoma Metastasis Detection from Chest X-ray Images: A Retrospective Cohort Study

Overview

Journal Cancers (Basel)

Publisher MDPI

Specialty Oncology

Date 2021 Oct 13

PMID 34638445

Citations 3

Authors

Christoph Wallner

Mansoor Alam

Marius Drysch

Johannes Maximilian Wagner

Alexander Sogorski

Mehran Dadras

Maxi Von Glinski

Felix Reinkemeier

Mustafa Becerikli

Christoph Heute

Volkmar Nicolas

Marcus Lehnhardt

Bjorn Behr

Affiliations

Soon will be listed here.

Abstract

Introduction: soft tissue sarcomas are a subset of malignant tumors that are relatively rare and make up 1% of all malignant tumors in adulthood. Due to the rarity of these tumors, there are significant differences in quality in the diagnosis and treatment of these tumors. One paramount aspect is the diagnosis of hematogenous metastases in the lungs. Guidelines recommend routine lung imaging by means of X-rays. With the ever advancing AI-based diagnostic support, there has so far been no implementation for sarcomas. The aim of the study was to utilize AI to obtain analyzes regarding metastasis on lung X-rays in the most possible sensitive and specific manner in sarcoma patients.

Methods: a Python script was created and trained using a set of lung X-rays with sarcoma metastases from a high-volume German-speaking sarcoma center. 26 patients with lung metastasis were included. For all patients chest X-ray with corresponding lung CT scans, and histological biopsies were available. The number of trainable images were expanded to 600. In order to evaluate the biological sensitivity and specificity, the script was tested on lung X-rays with a lung CT as control.

Results: in this study we present a new type of convolutional neural network-based system with a precision of 71.2%, specificity of 90.5%, sensitivity of 94%, recall of 94% and accuracy of 91.2%. A good detection of even small findings was determined.

Discussion: the created script establishes the option to check lung X-rays for metastases at a safe level, especially given this rare tumor entity.

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