Deep learning-based malignancy probability estimation of pulmonary nodules in PET/CT imaging - Report - MDSpire

Deep learning-based malignancy probability estimation of pulmonary nodules in PET/CT imaging

  • By

  • Lars Leijten

  • Erik H. J. G. Aarntzen

  • Roel L. J. Verhoeven

  • Adrienne H. Brouwers

  • Bram Geurts

  • Johannes A. van der Heide

  • Klaas Pieter Koopmans

  • Walter Noordzij

  • Gilles N. Stormezand

  • Erik H. F. M. van der Heijden

  • Colin Jacobs

  • July 11, 2026

  • 0 min

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Clinical Report: Estimation of Malignancy Risk in Pulmonary Nodules Using Deep Learning Techniques on PET/CT Imaging

Overview

This study presents the development and evaluation of a deep learning model, AITO-PETCT-MP, designed to estimate malignancy probability in indeterminate pulmonary nodules using [18F]FDG-PET/CT imaging. The model's performance was compared against established clinical benchmarks.

Background

The early detection of lung cancer significantly reduces mortality, leading to increased identification of pulmonary nodules. Most detected nodules are benign, necessitating effective risk assessment strategies to minimize unnecessary interventions while ensuring early-stage cancer detection. Current guidelines recommend using models like the Brock and Herder models for risk assessment.

Data Highlights

No numerical data or trial results were provided in the source material.

Key Findings

  • The AITO-PETCT-MP model was developed to estimate malignancy probability in indeterminate pulmonary nodules.
  • It was evaluated against the Herder model and clinician assessments using histological confirmation and follow-up as reference standards.
  • The study included a balanced cohort of patients with indeterminate pulmonary nodules identified through multiple data collection methods.
  • Histological confirmation was used to establish the reference standard for malignancy, while benign nodules were classified based on two years of follow-up.
  • Deep learning models have been evaluated against traditional risk assessment models.

Clinical Implications

The AITO-PETCT-MP model may assist clinicians in assessing malignancy risk in pulmonary nodules.

Conclusion

The development of the AITO-PETCT-MP model represents an advancement in the assessment of malignancy risk in pulmonary nodules.

Related Resources & Content

  1. European Radiology, 2023 -- Impact of Reduced CT Radiation Dose on AI-Based Assessment of Incidental Lung Nodules for Malignancy
  2. European Radiology, 2024 -- Evaluating Malignancy Risk in Pulmonary Nodules: A Comparison of Deep Learning Techniques and Multiparametric Statistical Models Across Various Disease Categories
  3. European Radiology, 2025 -- Evaluation of a Deep Learning Model Trained for Screening to Assess Malignancy in Incidental Pulmonary Nodules
  4. New England Journal of Medicine, 2011 -- Reduced Lung-Cancer Mortality with Low-Dose Computed Tomographic Screening
  5. PubMed, 2025 -- ACR Appropriateness Criteria® Radiologic Management of Pulmonary Nodules and Masses: Update 2025
  6. European Radiology — Diagnostic performance of a single breath-hold lung MRI scan with AI-powered compressed sensing for nodule detection in comparison to photon counting detector-CT
  7. Artificial intelligence for lung cancer: a systematic review of head‑to‑head CT, FDG PET/CT, and multimodal models across screening, staging, and prognosis
  8. Reduced Lung-Cancer Mortality with Low-Dose Computed Tomographic Screening | New England Journal of Medicine
  9. ACR Appropriateness Criteria® Radiologic Management of Pulmonary Nodules and Masses: Update 2025 - PubMed

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