scholarly journals Multiparametric differentiation of posterior fossa tumors in children using diffusion-weighted imaging and short echo-time1H-MR spectroscopy

2007 ◽  
Vol 26 (6) ◽  
pp. 1390-1398 ◽  
Author(s):  
J.F. Schneider ◽  
S. Confort-Gouny ◽  
A. Viola ◽  
Y. Le Fur ◽  
P. Viout ◽  
...  
Keyword(s):  
Posterior Fossa ◽  
Mr Spectroscopy ◽  
Diffusion Weighted Imaging ◽  
Posterior Fossa Tumors ◽  
Diffusion Weighted

scholarly journals Classification of paediatric brain tumours by diffusion weighted imaging and machine learning

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jan Novak ◽  
Niloufar Zarinabad ◽  
Heather Rose ◽  
Theodoros Arvanitis ◽  
Lesley MacPherson ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Apparent Diffusion Coefficient ◽  
Posterior Fossa ◽  
Brain Tumours ◽  
Diffusion Weighted Imaging ◽  
Regions Of Interest ◽  
Apparent Diffusion Coefficients ◽  
Diffusion Weighted ◽  
Apparent Diffusion ◽  
Paediatric Brain Tumours

AbstractTo determine if apparent diffusion coefficients (ADC) can discriminate between posterior fossa brain tumours on a multicentre basis. A total of 124 paediatric patients with posterior fossa tumours (including 55 Medulloblastomas, 36 Pilocytic Astrocytomas and 26 Ependymomas) were scanned using diffusion weighted imaging across 12 different hospitals using a total of 18 different scanners. Apparent diffusion coefficient maps were produced and histogram data was extracted from tumour regions of interest. Total histograms and histogram metrics (mean, variance, skew, kurtosis and 10th, 20th and 50th quantiles) were used as data input for classifiers with accuracy determined by tenfold cross validation. Mean ADC values from the tumour regions of interest differed between tumour types, (ANOVA P < 0.001). A cut off value for mean ADC between Ependymomas and Medulloblastomas was found to be of 0.984 × 10−3 mm2 s−1 with sensitivity 80.8% and specificity 80.0%. Overall classification for the ADC histogram metrics were 85% using Naïve Bayes and 84% for Random Forest classifiers. The most commonly occurring posterior fossa paediatric brain tumours can be classified using Apparent Diffusion Coefficient histogram values to a high accuracy on a multicentre basis.

Post-operative diffusion weighted imaging as a predictor of posterior fossa syndrome permanence in paediatric medulloblastoma

2017 ◽  
Vol 33 (3) ◽  
pp. 457-465 ◽  
Author(s):  
Felicia H. Z. Chua ◽  
Ady Thien ◽  
Lee Ping Ng ◽  
Wan Tew Seow ◽  
David C. Y. Low ◽  
...  
Keyword(s):  
Posterior Fossa ◽  
Diffusion Weighted Imaging ◽  
Posterior Fossa Syndrome ◽  
Diffusion Weighted

scholarly journals NIMG-15. ADVANTAGE OF HIGH B-VALUE DIFFUSION-WEIGHTED IMAGING FOR DIFFERENTIATION OF HEMANGIOBLASTOMA FROM METASTATIC TUMORS IN POSTERIOR FOSSA

2016 ◽  
Vol 18 (suppl_6) ◽  
pp. vi127-vi127
Author(s):  
Shumpei Onishi ◽  
Fumiyuki Yamasaki ◽  
Takeshi Takayasu ◽  
Ryo Nosaka ◽  
Manish Kolakshyapati ◽  
...  
Keyword(s):  
Posterior Fossa ◽  
Diffusion Weighted Imaging ◽  
B Value ◽  
Metastatic Tumors ◽  
High B Value ◽  
Diffusion Weighted

Diffusion-Weighted Imaging-guided MR Spectroscopy in Breast Lesions using Readout-Segmented Echo-Planar Imaging

2015 ◽  
Vol 26 (6) ◽  
pp. 1565-1574 ◽  
Author(s):  
Kun Sun ◽  
Weimin Chai ◽  
Caixia Fu ◽  
Ying Zhan ◽  
Kunwei Shen ◽  
...  
Keyword(s):  
Mr Spectroscopy ◽  
Diffusion Weighted Imaging ◽  
Echo Planar Imaging ◽  
Breast Lesions ◽  
Planar Imaging ◽  
Diffusion Weighted ◽  
Echo Planar

P285 Diffusion weighted imaging and MR spectroscopy findings in a case of neonatal hypoglycaemia

2009 ◽  
Vol 13 ◽  
pp. S109-S110
Author(s):  
R.E. Musson ◽  
R. Batty ◽  
S.R. Mordekar ◽  
I.D. Wilkinson ◽  
P.D. Griffiths ◽  
...  
Keyword(s):  
Mr Spectroscopy ◽  
Diffusion Weighted Imaging ◽  
Neonatal Hypoglycaemia ◽  
Diffusion Weighted
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