PURPOSE To report our preliminary results in the application of a turbo fluid-attenuated inversion-recovery (FLAIR) MR technique to the diagnosis of intracranial tumors and to assess the clinical usefulness of this technique. METHODS Thirty-four patients with various intracranial tumors were studies with MR imaging, including a turbo FLAIR sequence. FLAIR images were compared with images obta...

BACKGROUND AND PURPOSE In acute stroke with proximal artery occlusion, FLAIR vascular hyperintensities observed beyond the boundaries of the cortical lesion on DWI (newly defined "FLAIR vascular hyperintensity-DWI mismatch") may be a marker of tissue at risk of infarction. Our aim was to compare the occurrence of FLAIR vascular hyperintensity-DWI mismatch relative to that of perfusion-weighted ...

In this study, we compared a fast fluid-attenuated inversion recovery (fast-FLAIR) sequence to conventional spin-echo (CSE) in the evaluation of brain MRI lesion loads of seven patients with clinically definite multiple sclerosis. Interleaved CSE (3000/20, 5 mm contiguous axial slices) and fast-FLAIR (9000/150/2200, 5 mm contiguous axial slices) sequences were performed on a 1.0 T machine. Lesi...

K. Takeo, A. Ishikawa, M. Okazaki, S. Kohno, K. Shimizu SHIMADZU corporation, Kyoto, Kyoto, Japan Introduction In brain MR imaging, both T2 weighted sequence and Fluid Attenuated Inversion Recovery(FLAIR) sequence are widely used at most hospitals. Currently, the FLAIR sequence is usually used in addition to the T2 weighted sequence, and it is expected to provide additional information. In this...

Background In patients with acute ischemic stroke large vessel occlusion, the presence of hyperintense lesions on fluid‐attenuated inversion recovery (FLAIR‐positive) before mechanical thrombectomy (MT) and that hyperdense noncontrast computed tomography (CT‐positive) after MT are associated parenchymal hemorrhage, but significance these findings is unclear. Methods Patients occlusion underwent...

Contrast optimization of a three-dimensional (3D) Fluid-attenuated inversion recovery (FLAIR) sequence is examined in the context of multiple sclerosis. In order to develop 3D FLAIR for enhanced detection of lesions, an iterative approach based on theoretical considerations was used. The 3D FLAIR sequence was systematically acquired with incremental parameter changes on a single subject with mu...

BACKGROUND AND PURPOSE Recent work has shown that fluid-attenuated inversion recovery (FLAIR) imaging with contrast enhancement is highly sensitive for detecting subarachnoid space disease. We hypothesized that contrast-enhanced FLAIR imaging has superior sensitivity to contrast-enhanced T1-weighted MR imaging in detecting leptomeningeal metastases. METHODS Sixty-eight patients referred for s...

Thirty six patients with a history of partial epilepsy had MRI of the brain performed with conventional T1 and T2 weighted pulse sequences as well as the fluid attenuated inversion recovery (FLAIR) sequence. Abnormalities were found in 20 cases (56%), in whom there were 25 lesions or groups of lesions. Twenty four of these lesions were more conspicuous with the FLAIR sequence than with any of t...