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August 9, 2026Scientific ReportsOpen Access

Towards prospective identification of optimal scan parameters for CT-guided interventions: a phantom study

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Authors

CSConstantin SchareckNBNeele BlumhoffMSMalte M. Sieren

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Overview

Phantom study evaluates the balance of radiation dose and image quality in CT-guided interventions, suggesting optimal parameters.

Key Points

  • This study aims to determine the best combination of tube voltage and load to optimize image quality for CT-guided interventions across different patient sizes.
  • Utilized a modular multi-energy phantom with effective diameters of 20 cm and 35 cm.
  • Evaluated tube voltages of 80, 100, 120, and 140 kVp with mAs adjustments for dose levels between 1 and 10 mGy.
  • Analyzed contrast-to-noise ratio (CNR) across various target tissues and sizes.
  • In the small phantom, low kVp settings provided the highest CNR for high-contrast targets like iodine.
  • Higher kVp settings improved CNR across all materials in the large phantom.
  • Raising kVp from 80 to 120 increased CNR from 6.5 to 8.6 for the iodine-blood setup.

Cite This Study

Schareck et al. (2026) studied this question.

synapsesocial.com/papers/6a782d862e1896536c840bcahttps://doi.org/10.1038/s41598-026-65962-y
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