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Erschienen in: Neuroradiology 7/2007

01.07.2007 | Diagnostic Neuroradiology

Perfusion-sensitive MRI of pilocytic astrocytomas: initial results

verfasst von: Sylvie D. Grand, Stéphane Kremer, Irène M. Tropres, Dominique M. Hoffmann, Stephan J. Chabardes, Virginie Lefournier, François R. Berger, Caroline Pasteris, Alexandre Krainik, Basile M. Pasquier, Michel Peoch, Jean François Le Bas

Erschienen in: Neuroradiology | Ausgabe 7/2007

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Abstract

Purpose

To present the imaging and perfusion data obtained in nine patients with pilocytic astrocytomas (PA) and to discuss the original functional issues of this technique.

Method

Nine patients with pathologically proven PA underwent conventional and perfusion MR imaging. Various areas of relative cerebral blood volume (rCBV) within the tumors were obtained. The maximum rCBV ratios were identified and considered as representative of the tumor. The results were compared with the pathological findings.

Results

In all patients, rCBV was <1.5 (mean 1) and the signal intensity curve overshot the baseline.

Conclusion

PA tend to have low rCBV values and a first-pass curve that crosses the baseline. These characteristics may be explained by the histological profile of the tumoral vascularity and are of relevance in the identification of these rare tumors.
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Metadaten
Titel
Perfusion-sensitive MRI of pilocytic astrocytomas: initial results
verfasst von
Sylvie D. Grand
Stéphane Kremer
Irène M. Tropres
Dominique M. Hoffmann
Stephan J. Chabardes
Virginie Lefournier
François R. Berger
Caroline Pasteris
Alexandre Krainik
Basile M. Pasquier
Michel Peoch
Jean François Le Bas
Publikationsdatum
01.07.2007
Verlag
Springer-Verlag
Erschienen in
Neuroradiology / Ausgabe 7/2007
Print ISSN: 0028-3940
Elektronische ISSN: 1432-1920
DOI
https://doi.org/10.1007/s00234-006-0204-y

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