421. EXPERIMENTAL STUDY OF LOCALIZED 1^H-MRS
نویسندگان
چکیده
منابع مشابه
Clinical efficacy of proton magnetic resonance spectroscopy (1H-MRS) in the diagnosis of localized prostate cancer.
BACKGROUND The objective of this study was to evaluate the efficacy of proton magnetic resonance spectroscopy (1H-MRS) in the detection of prostate cancer. MATERIALS AND METHODS The experimental group consisted of 20 patients with localized prostate cancer who underwent radical prostatectomy. The sensitivity, positive predictive value and accuracy of the detection of prostate cancer in the 12...
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Using proton magnetic resonance spectroscopy ((1)H-MRS), we measured chemical metabolites in the left amygdala and the bilateral orbito-frontal cortex (OFC) in children with autism spectrum disorders (ASD). The concentrations of N-acetylaspartate (NAA) in these regions of ASD were significantly decreased compared to those in the control group. In the autistic patients, the NAA concentrations in...
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A new point-resolved spectroscopy (PRESS) sequence was developed that allows localized human proton MR spectra to be acquired at echo times (TEs) of 10 ms or less. The method was implemented on a 4 Tesla Varian research console and a clinical 3 Tesla Siemens Trio scanner. Human brain spectra acquired in vivo from the prefrontal cortex at TE=8 ms showed improved signals from coupled resonances (...
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Metachromatic leukodystrophy (MLD) is characterized by the accumulation of sulfatide sphingolipids in the brain and peripheral nerves. We report metabolite alterations recorded using multi-voxel proton spectroscopy of the brain in four children with MLD. The data revealed elevated myoinositol/creatine and lactate/creatine ratios as well as decreased N-acetyl aspartate/creatine ratios. We propos...
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with a power of 0.8 and type I error probability of 0.05. Anyway, in our opinion, metabolic guidance may be rather useful during stereotactic biopsy of parenchymal brain tumors, and may be especially recommended for recurrent, particularly previously irradiated, neoplasms, or for sampling of the highly vascular lesions since in the latter cases, detection of the spectroscopic abnormalities outs...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1990
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00003322543