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Gadolinium dose optimisation in patients with multiple sclerosis: intra- and inter-individual comparisons
Alessandro Stecco1, Elena Migazzo, Antonio Saponaro
1Istituto di Radiologia Diagnostica e Interventistica, Università degli Studi del Piemonte Orientale A. Avogadro, Azienda Ospedaliera Maggiore della Carità, Novara, Italy. astecco@sirm.org
European Journal of Radiology
|July 26, 2005
Summary
A single double dose of gadolinium contrast provides effective multiple sclerosis lesion visualization, matching triple dose results. This optimizes contrast administration in MRI scans for MS patients.
Area of Science:
- Radiology
- Neurology
- Medical Imaging
Background:
- Multiple sclerosis (MS) lesion detection relies on contrast-enhanced MRI.
- Optimizing gadolinium contrast dosage and administration is crucial for accurate MS evaluation.
Purpose of the Study:
- To determine the optimal gadolinium dose and injection frequency for MS lesion assessment using MRI.
- To establish the most effective balance between contrast dose and number of injections for MR imaging of MS.
Main Methods:
- Twenty-three MS patients underwent brain and/or spine MRI scans.
- T1-weighted images were analyzed for signal intensity and lesion counts after single, double, or triple gadolinium doses.
- Statistical tests (Wilcoxon, Mann-Whitney U) compared dose efficacy.
Main Results:
- No significant difference in signal intensity or lesion enhancement was observed between single double-dose and triple-dose groups.
- A single double dose of gadolinium yielded comparable results to multiple triple doses.
- Enhancement increased significantly after the second gadolinium bolus compared to a single dose.
Conclusions:
- A single double dose of gadolinium is sufficient for optimal MS lesion detection via MRI.
- This approach offers an optimized contrast administration strategy, equivalent to multiple injections.
- Single double-dose gadolinium provides an efficient and effective method for MS lesion evaluation.