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Erschienen in: European Radiology 2/2012

01.02.2012 | Oncology

Discrimination of paediatric brain tumours using apparent diffusion coefficient histograms

verfasst von: Jonathan G. Bull, Dawn E. Saunders, Christopher A. Clark

Erschienen in: European Radiology | Ausgabe 2/2012

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Abstract

Objective

To determine if histograms of apparent diffusion coefficients (ADC) can be used to differentiate paediatric brain tumours.

Methods

Imaging of histologically confirmed tumours with pre-operative ADC maps were reviewed (54 cases, 32 male, mean age 6.1 years; range 0.1–15.8 years) comprising 6 groups. Whole tumour ADC histograms were calculated; normalised for volume. Stepwise logistic regression analysis was used to differentiate tumour types using histogram metrics, initially for all groups and then for specific subsets.

Results

All 6 groups (5 dysembryoplastic neuroectodermal tumours, 22 primitive neuroectodermal tumours (PNET), 5 ependymomas, 7 choroid plexus papillomas, 4 atypical teratoid rhabdoid tumours (ATRT) and 9 juvenile pilocytic astrocytomas (JPA)) were compared. 74% (40/54) were correctly classified using logistic regression of ADC histogram parameters. In the analysis of posterior fossa tumours, 80% of ependymomas, 100% of astrocytomas and 94% of PNET-medulloblastoma were classified correctly. All PNETs were discriminated from ATRTs (22 PNET and 4 supratentorial ATRTs) (100%).

Conclusions

ADC histograms are useful in differentiating paediatric brain tumours, in particular, the common posterior fossa tumours of childhood. PNETs were differentiated from supratentorial ATRTs, in all cases, which has important implications in terms of clinical management.
Key Points
MR based apparent diffusion coefficient histograms can help differentiate paediatric brain tumours
ADC histogram parameters correctly classified the great majority of posterior fossa tumours
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Metadaten
Titel
Discrimination of paediatric brain tumours using apparent diffusion coefficient histograms
verfasst von
Jonathan G. Bull
Dawn E. Saunders
Christopher A. Clark
Publikationsdatum
01.02.2012
Verlag
Springer-Verlag
Erschienen in
European Radiology / Ausgabe 2/2012
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI
https://doi.org/10.1007/s00330-011-2255-7

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