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Unilateral Lung Volume Analysis Using Micro-CT for Enhanced Assessment of Pulmonary Fibrosis in Preclinical Models
Published on: June 20, 2025
985
Evaluation of a preclinical photon-counting CT prototype for pulmonary imaging
Felix K Kopp1, Heiner Daerr2, Salim Si-Mohamed3,4
1Department of diagnostic and interventional Radiology, Technische Universität München, Munich, Germany. felix.kopp@tum.de.
Scientific Reports
|November 28, 2018
Summary
A new spectral photon-counting CT (SPCCT) prototype offers superior pulmonary imaging over conventional CT. This advanced imaging technology demonstrates improved nodule volume estimation and higher spatial resolution for better lung structure assessment.
Area of Science:
- Medical Imaging
- Radiology
- Biomedical Engineering
Background:
- Conventional CT has limitations in pulmonary imaging, particularly for small structures.
- Spectral photon-counting CT (SPCCT) is an emerging technology with potential for improved image quality.
Purpose of the Study:
- To compare a preclinical SPCCT prototype with conventional CT for pulmonary imaging.
- To evaluate the performance of SPCCT in assessing lung nodules and structures.
Main Methods:
- A custom lung phantom with nodules was scanned using SPCCT and conventional CT (standard and high-resolution).
- Volume estimation, shape similarity (Dice coefficient), and spatial resolution (MTF) were evaluated.
- In-vivo rabbit lung images were also assessed.
Main Results:
- SPCCT showed superior nodule volume estimation (RMSE: 21.3 mm³ vs. 28.5 mm³ for CT).
- Dice similarity coefficient was higher for SPCCT (0.90 vs. 0.85 for CT).
- Spatial resolution (10% MTF) significantly improved with SPCCT (21.7 LP/cm vs. 10.1 LP/cm for HR-CT).
Conclusions:
- The preclinical SPCCT prototype demonstrates significant potential for enhanced pulmonary imaging.
- Higher resolution and improved accuracy in volume estimation suggest SPCCT could advance lung structure assessment.
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