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Erschienen in: Neuroradiology 3/2021

21.08.2020 | Diagnostic Neuroradiology

Validation of combined use of DWI and percentage signal recovery-optimized protocol of DSC-MRI in differentiation of high-grade glioma, metastasis, and lymphoma

verfasst von: Emetullah Cindil, Halit Nahit Sendur, Mahi Nur Cerit, Nurullah Dag, Nesrin Erdogan, Filiz Elbuken Celebi, Yusuf Oner, Turgut Tali

Erschienen in: Neuroradiology | Ausgabe 3/2021

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Abstract

Purpose

With conventional MRI, it is often difficult to effectively differentiate between contrast-enhancing brain tumors, including primary central nervous system lymphoma (PCNSL), high-grade glioma (HGG), and metastasis. This study aimed to assess the discrimination ability of the parameters obtained from DWI and the percentage signal recovery- (PSR-) optimized protocol of DSC-MRI between these three tumor types at an initial step.

Methods

DSC-MRI using a PSR-optimized protocol (TR/TE = 1500/30 ms, flip angle = 90°, no preload) and DWI of 99 solitary enhancing tumors (60 HGGs, 24 metastases, 15 PCNSLs) were retrospectively assessed before treatment. rCBV, PSR, ADC in the tumor core and rCBV, and ADC in peritumoral edema were measured. The differences were evaluated using one-way ANOVA, and the diagnostic performance was evaluated using ROC curve analysis.

Results

PSR in the tumor core showed the best discriminating performance in differentiating these three tumor types with AUC values of 0.979 for PCNSL vs. others and 0.947 for HGG vs. metastasis. The ADC was only helpful in the tumor core and distinguishing PCNSLs from others (AUC = 0.897).

Conclusion

Different from CBV-optimized protocols (preload, intermediate FA), PSR derived from the PSR-optimized protocol seems to be the most important parameter in the differentiation of HGGs, metastases, and PCNSLs at initial diagnosis. This property makes PSR remarkable and carries the need for comprehensive DSC-MRI protocols, which provides PSR sensitivity and CBV accuracy together, such as the preload use of the PSR-optimized protocol before the CBV-optimized protocol.
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Metadaten
Titel
Validation of combined use of DWI and percentage signal recovery-optimized protocol of DSC-MRI in differentiation of high-grade glioma, metastasis, and lymphoma
verfasst von
Emetullah Cindil
Halit Nahit Sendur
Mahi Nur Cerit
Nurullah Dag
Nesrin Erdogan
Filiz Elbuken Celebi
Yusuf Oner
Turgut Tali
Publikationsdatum
21.08.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
Neuroradiology / Ausgabe 3/2021
Print ISSN: 0028-3940
Elektronische ISSN: 1432-1920
DOI
https://doi.org/10.1007/s00234-020-02522-9

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