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FLAIR MR sequence in the diagnosis and follow-up of low-grade astrocytomas

Vojnosanitetski pregled, 2005-07, Vol.62 (7-8), p.525-528

ISSN: 0042-8450 ;EISSN: 2406-0720 ;DOI: 10.2298/VSP0508525S ;PMID: 16171014

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  • Title:
    FLAIR MR sequence in the diagnosis and follow-up of low-grade astrocytomas
  • Author: Stosić-Opinćal, Tatjana ; Gavrilov, Mihail ; Stosić, Srboljub ; Lavrnić, Slobodan ; Perić, Vesna ; Grujicić, Danica
  • Subjects: Adolescent ; Adult ; Aged ; astrocytoma ; Astrocytoma - diagnosis ; Brain - pathology ; Brain Edema - diagnosis ; brain neoplasms ; Brain Neoplasms - diagnosis ; diagnosis ; Diagnosis, Differential ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged
  • Is Part Of: Vojnosanitetski pregled, 2005-07, Vol.62 (7-8), p.525-528
  • Description: To evaluate the sensitivity of fluid-attenuated inversion recovery (FLAIR) sequence in the diagnosis and follow-up of the patients with low-grade astrocytomas compared with T2-weighted (T2W) sequence. Twenty-four patients with biopsy-confirmed low-grade astrocytoma (age range, 15-66 years) underwent T1-weighted (T1W), T2W and FLAIR imaging with a superconducting unit 1.0 T. FLAIR images were qualitatively evaluated by comparison with T2W images by the three experienced neuroradiologists. To evaluate the diagnostic value of FLAIR, the neuroradiologists individually assessed the possibilities of the detection of lesions, as well as the possibilities of the differentiation of tumor from the surrounding edema on FLAIR vs. T2W images. Every examiner ranked FLAIR sequence vs. T2W in three degrees: worse, equal and better. The comparison of FLAIR with T2W spin-echo (SE) images with regard to the detection of the lesions showed that 82.8% of FLAIR studies were superior, 17.2% were of similar diagnostic value, and none was inferior to the T2W images. The comparison of images with regard to the differentiation of tumor boundaries vs. surrounding edema showed that 92.5% of FLAIR studies were superior, 7.5% were of similar diagnostic value, and none was inferior to the T2W images. Our results were similar to the previous studies' results concerning the advantages of FLAIR sequence in the diagnosis of low grade astrocytomas over T2W sequence. FLAIR was better at showing different tumor components, and at distinguishing CSF from the cystic component, and the postoperative cavity, compared with T2W images. Our conclusion was that FLAIR could be routinely used in the evaluation and follow-up of low-grade astrocytomas.
  • Publisher: Serbia: Military Health Department, Ministry of Defance, Serbia
  • Language: Serbian;English
  • Identifier: ISSN: 0042-8450
    EISSN: 2406-0720
    DOI: 10.2298/VSP0508525S
    PMID: 16171014
  • Source: MEDLINE
    DOAJ Directory of Open Access Journals
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