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April 29, 2026

Comparing the detectability of pulmonary nodules on two ultra-high resolution CT scanners: a preliminary phantom study.

Joël Greffier Cécile Salvat Maxime Pastor Nicolas Villani Valérie Bousson Ariane Vallot Salim Si-Mohamed Fabien de Oliveira Jean-Paul Beregi Djamel Dabli Lama Hadid‐Beurrier

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Key Points

This research aims to compare the detectability of pulmonary nodules using two different CT imaging techniques, assessing both objective and subjective measures.
Comparative analysis of detectability indices (d') for three types of chest nodules
Five radiologists evaluated confidence in detecting nodules using an anthropomorphic phantom
Comparisons made across multiple dose levels for both CT systems
PCCT demonstrated higher detectability indices than UHR-CT
High-contrast nodule detection was achievable at all dose levels for both scanners
Low-contrast nodule detection was clinically sufficient only at higher doses with PCCT

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Implication

Compares the detectability of pulmonary nodules in an anthropomorphic phantom using UHR-CT and PCCT, highlighting the influence of dose levels.

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Cite This Study

Greffier et al. (2026) studied this question.

synapsesocial.com/papers/69f594e171405d493afffc2f https://doi.org/10.1007/s00330-026-12582-9

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