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Dose Reduction with Gadopiclenol: Implications for DSC Perfusion Imaging.

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Summary
This summary is machine-generated.

Gadopiclenol (Vueway) allows lower doses but shows weaker signal transients in DSC perfusion imaging compared to gadobenate dimeglumine (MultiHance). Dose normalization eliminates this difference, suggesting reduced dosing impacts DSC signal intensity.

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Area of Science:

  • Radiology
  • Medical Imaging
  • Pharmacology

Background:

  • Gadopiclenol (Vueway) offers higher T1 relaxivity than gadobenate dimeglumine (MultiHance).
  • This allows for a 50% dose reduction in T1-weighted imaging with noninferior lesion detection.
  • Reduced dosing of Vueway may affect Dynamic Susceptibility Contrast (DSC) perfusion imaging.

Purpose of the Study:

  • To compare DSC signal transients between MultiHance and Vueway at package-insert doses.
  • To evaluate the impact of reduced gadolinium dosing on DSC perfusion imaging metrics.

Main Methods:

  • Retrospective analysis of 30 patients.
  • Comparison of DSC signal transients using MultiHance and Vueway on separate occasions.
  • Analysis included % signal change and area under the contrast concentration-time curve.

Main Results:

  • Vueway showed a statistically significant reduction in % signal change and area under the curve compared to MultiHance.
  • When normalized for gadolinium dose, this difference was eliminated.
  • Vueway at package-insert dose produced weaker DSC signal transients, proportional to its reduced gadolinium dose.

Conclusions:

  • Package-insert dosing of Vueway results in weaker DSC signal transients compared to MultiHance.
  • The observed differences are directly related to the reduced gadolinium dose.
  • Further research is needed to assess the impact on perfusion metrics, signal-to-noise ratio (SNR), and leakage correction.