LOCALIZED PROTON MR SPECTROSCOPY OF THE BRAIN IN CHILDREN

被引:49
作者
TZIKA, AA
VIGNERON, DB
BALL, WS
DUNN, RS
KIRKS, DR
机构
[1] Department of Radiology, Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio
[2] Department of Pediatrics, Children's Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio
[3] Magnetic Resonance Science Center, University of California, San Francisco
[4] Department of Radiology, Children's Hospital and Harvard Medical School, Boston, Massachusetts
来源
JMRI-JOURNAL OF MAGNETIC RESONANCE IMAGING | 1993年 / 3卷 / 05期
关键词
BRAIN; DISEASES; INJURIES; ISCHEMIA; MR; BRAIN NEOPLASMS; IN INFANTS AND CHILDREN; MAGNETIC RESONANCE (MR); SPECTROSCOPY;
D O I
10.1002/jmri.1880030506
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
Small-voxel (3.0-8.0 cm3), magnetic resonance (MR) imaging-guided proton MR spectroscopy was performed in 54 patients (aged 6 days to 19 years) with intracranial masses (n = 16), neurodegenerative disorders (n = 34), and other neurologic diseases (n = 4) and in 23 age-matched control subjects without brain disease. A combined short TE (18 msec) stimulated-echo acquisition mode (STEAM) and long TE (135 and/or 270 msec) spin-echo point-resolved spatially localized spectroscopy (PRESS) protocol, using designed radio-frequency pulses, was performed at 1.5 T. STEAM spectra revealed short T2 and/or strongly coupled metabolites; prominent resonances were obtained from N-acetyl aspartate (NAA), choline-containing compounds (Cho), and total creatine (tCr). Lactate was well resolved with the long TE PRESS sequence. Intracranial tumors were readily differentiated from cerebrospinal fluid (CSF) collections. All tumors showed low NAA, high Cho, and reduced tCr levels. Neurodegenerative disorders showed low or absent NAA levels and enhanced mobile lipid, glutamate and glutamine, and inositol levels, consistent with neuronal loss, gliosis, demyelination, and amino acid neurotoxicity. Preliminary experience indicates that proton MR spectroscopy can contribute in the evaluation of central nervous system abnormalities of infants and children.
引用
收藏
页码:719 / 729
页数:11
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