E R Melhem1, R Itoh. 1. Department of Radiology and Radiological Sciences, The Johns Hopkins Hospital, The Johns Hopkins Medical Institutions, 600 N. Wolfe St., Baltimore, MD 21287-2182, USA.
Abstract
OBJECTIVE: Using computer-generated brain maps, we aimed to define T1 relaxation time thresholds above which a T2 hyperintense (compared with surrounding white matter) lesion became hypointense on fluid-attenuated inversion recovery (FLAIR) MR imaging. Thresholds were identified for FLAIR MR imaging sequences with different echo times (TEs). CONCLUSION: Thresholds for T1 relaxation times increased as TE increased during FLAIR MR imaging sequences. Such thresholds defined the transition from hyperintense to hypointense lesions.
OBJECTIVE: Using computer-generated brain maps, we aimed to define T1 relaxation time thresholds above which a T2 hyperintense (compared with surrounding white matter) lesion became hypointense on fluid-attenuated inversion recovery (FLAIR) MR imaging. Thresholds were identified for FLAIR MR imaging sequences with different echo times (TEs). CONCLUSION: Thresholds for T1 relaxation times increased as TE increased during FLAIR MR imaging sequences. Such thresholds defined the transition from hyperintense to hypointense lesions.
Authors: Elke Hattingen; Alina Jurcoane; Keivan Daneshvar; Ulrich Pilatus; Michel Mittelbronn; Joachim P Steinbach; Oliver Bähr Journal: Neuro Oncol Date: 2013-08-07 Impact factor: 12.300