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TI-RADS with Deep Learning Algorithm Guide Diagnoses of Pediatric Thyroid Nodules on Ultrasound

By MedImaging International staff writers
Posted on 20 Oct 2022
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Image: ACR TI-RADS and a deep learning algorithm can also guide decisions to perform fine-needle aspiration (Photo courtesy of Pexels)
Image: ACR TI-RADS and a deep learning algorithm can also guide decisions to perform fine-needle aspiration (Photo courtesy of Pexels)

ACR TI-RADS and a deep learning algorithm trained on adult populations offer alternative strategies for evaluating thyroid nodules in children and younger adults, including guiding decisions to perform fine-needle aspiration.

In a new study, researchers at Duke University (Durham, NC, USA) evaluated 139 patients (119 female, 20 male) aged ≤21 years with a thyroid nodule on ultrasound with definitive pathologic results from fine-needle aspiration and/or surgical excision. Single transverse and longitudinal images of one nodule per patient were then extracted. Three radiologists independently characterized nodules based on overall impression (benign vs. malignant) and ACR TI-RADS. A previously developed deep learning algorithm determined malignancy likelihood for each nodule, which was used to derive a risk level. Ultimately, for evaluating thyroid nodules via ultrasound in children and young adults, radiologists’ overall impressions - representing the current standard clinical approach - had mean sensitivity of 58.3% and mean specificity of 79.9%; ACR TI-RADS had mean sensitivity of 85.1% and mean specificity of 50.6%, and a deep learning algorithm had sensitivity of 87.5% and specificity of 36.1%.

“Both ACR TI-RADS and the deep learning algorithm had higher sensitivity, albeit lower specificity, compared with radiologists’ overall impressions,” wrote co-first author Jichen Yang, BSE, from the department of electrical and computer engineering at Duke University. Adding that the algorithm had similar sensitivity, but lower specificity, than ACR TI-RADS, “interobserver agreement was higher for ACR TI-RADS than for overall impressions,” Yang noted.

“Given the heightened priority for sensitivity when evaluating thyroid nodules in children, compared with in adults, the findings support the continued exploration in children of ACR TI-RADS and of the deep learning algorithm,” Yang concluded.

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