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Perilesional apparent diffusion coefficient in the preoperative evaluation of glioma grade.

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Perilesional apparent diffusion coefficient in the preoperative evaluation of glioma grade.

Clin Imaging. 2018 Jul 07;52:88-94

Authors: Yazdani M, Rumboldt Z, Tabesh A, Giglio P, Schiarelli C, Morgan PS, Spampinato MV

Abstract
Preoperative identification of high-grade gliomas is critical to optimize treatment strategy and to predict prognosis. To determine whether perilesional apparent diffusion coefficient (ADC) values differ between high- and low-grade tumors, we assessed water diffusivity within normal-appearing brain parenchyma (NABP) surrounding gliomas in twenty-one treatment-naïve patients. This showed significantly lower mean and 25th percentile (Q1) ADC values in high- grade compared to low-grade gliomas respectively in the range of 10-25 and 10-30 mm away from combined tumor and surrounding T2 signal. Thus, perilesional ADC measurement may reflect the extent of tumor infiltration beyond the abnormality seen on conventional MRI.

PMID: 30032069 [PubMed – as supplied by publisher]

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