نتایج جستجو برای: Magnetization Transfer Imaging (MTI)

تعداد نتایج: 752539  

Journal: :Journal of affective disorders 2009
Ti-Jiang Zhang Qi-Zhu Wu Xiao-Qi Huang Xue-Li Sun Ke Zou Su Lui Fei Liu Jun-Mei Hu Wei-Hong Kuang Dong-Ming Li Fei Li Hua-Fu Chen Raymond C K Chan Andrea Mechelli Qi-Yong Gong

BACKGROUND Studies on treatment resistant depression (TRD) using advanced magnetic resonance imaging techniques are very limited. METHODS A group of 15 patients with clinically defined TRD and 15 matched healthy controls underwent magnetization transfer imaging (MTI) and T1-weighted (T1W) imaging. MTI data were processed and analyzed voxel-wised in SPM2. A voxel based morphometric (VBM) analy...

Journal: :AJNR. American journal of neuroradiology 2000
J C McGowan J H Yang R C Plotkin R I Grossman E M Umile K M Cecil L J Bagley

BACKGROUND AND PURPOSE Most traumatic brain injuries are classified as mild, yet in many instances cognitive deficits result. The purpose of this study was to investigate possible relationships between quantitative magnetization transfer imaging (MTI) and neurocognitive findings in a cohort of patients with mild head trauma but negative findings on conventional MR images. METHODS We examined ...

2004
S. C. A. Steens F. Admiraal-Behloul G. P. Th. Bosma G. M. Steup-Beekman H. Olofsen S. le Cessie T. W. J. Huizinga M. A. van Buchem

Objective. Damage of brain parenchyma in patients with primary diffuse neuropsychiatric systemic lupus erythematosus (NPSLE) has been indicated by magnetization transfer imaging (MTI). However, the location of MTI abnormalities is unknown. This study was undertaken to assess the distribution of MTI abnormalities over gray matter (GM) and white matter (WM) in SLE patients with a history of NP sy...

2015
Irmhild Altmann-Schneider Anton J. M. de Craen Annette A. van den Berg-Huysmans Pieternella Slagboom Rudi G.J. Westendorp Mark A. van Buchem Jeroen van der Grond

This study aimed to investigate whether magnetization transfer imaging (MTI) parameters of cortical gray and white matter and subcortical gray matter structures differ between subjects enriched for human familial longevity and control subjects to provide a thorough description of the brain phenotype of familial longevity. Moreover, we aimed to describe cerebral ageing effects on MTI parameters ...

Journal: :iranian journal of medical physics 0
masoomeh fooladi m.sc. in medical physics, medical physics and biomedical engineering dept., tehran university of medical sciences, tehran, iran nader riahi alam associate professor, medical physics and biomedical engineering dept., tehran university of medical sciences, tehran, iran mohammad hossein harirchyan associate professor, neurology dept., tehran university of medical sciences, tehran, iran kavoos firuznia associate professor, radiology dept., tehran university of medical sciences, tehran, iran mohammad ali oghabian associate professor, medical physics and biomedical engineering dept., tehran university of medical sciences, tehran, iran majid shakiba researcher, medical imaging research center, imam khomeini hospital, tehran university of medical sciences, tehran, iran

introduction: multiple sclerosis (ms) is a demyelinating disease of the central nervous system (cns), affecting mostly young people at a mean age of 30 years. magnetic resonance imaging (mri) is one of the most specific and sensitive methods in diagnosing and detecting the evolution of multiple sclerosis disease. but it does not have the ability to differentiate between distinct histopathologic...

Journal: :AJNR. American journal of neuroradiology 2005
Stefan C A Steens Gerda M Steup-Beekman Gerlof P Th Bosma Faiza Admiraal-Behloul Hans Olofsen Joost Doornbos Tom W J Huizinga Mark A van Buchem

BACKGROUND AND PURPOSE Quantitative MR imaging techniques such as magnetization transfer imaging (MTI), diffusion-weighted imaging (DWI), and MR spectroscopy are promising diagnostic tools for use with patients with diffuse brain diseases such as neuropsychiatric systemic lupus erythematosus (NPSLE). Such patients are often on corticosteroid (CS) treatment. Presently, it is unknown whether CSs ...

2009
R. G. Sah U. Sharma R. Prashad N. R. Jagannathan

Introduction: Breast cancer is a major health problem in women worldwide. The diagnosis of the breast cancer is based on palpation, mammography and ultrasonogram. MR imaging and MR spectroscopy has the potential to facilitate improved diagnosis in patients with breast lesions. In conventional MRI, the contrast between different tissues is dependent on the relaxation properties of the water. How...

2013
Nina Homayoon Stefan Ropele Edith Hofer Petra Schwingenschuh Stephan Seiler Reinhold Schmidt

BACKGROUND AND PURPOSE Magnetization transfer imaging detects cerebral microstructural tissue alterations. We examined the association between the Framingham Stroke Risk Profile (FSRP) score and magnetization transfer imaging (MTI) measures in pathological and normal appearing brain tissue in clinically normal elderly subjects to determine if stroke risk leads to brain tissue destruction beyond...

Journal: :Journal of the neurological sciences 1999
M Rovaris M Bozzali M Rodegher C Tortorella G Comi M Filippi

Previous studies suggested that magnetization transfer ratio (MTR) histograms are highly correlated with other magnetic resonance imaging (MRI) measures and can be used as a reliable method for quantifying overall disease burden in multiple sclerosis (MS). However, the relative influence of burden and severity of macroscopic MS lesions and degree of brain atrophy on various MTR histogram parame...

2015
Ece Ercan Carson Ingo Oranan Tritanon Cesar Magro-Checa Alex Smith Seth Smith Tom Huizinga Mark A. van Buchem Itamar Ronen

Systemic lupus erythematosus (SLE) is an autoimmune disease with multi-organ involvement and results in neurological and psychiatric (NP) symptoms in up to 40% of the patients. To date, the diagnosis of neuropsychiatric systemic lupus erythematosus (NPSLE) poses a challenge due to the lack of neuroradiological gold standards. In this study, we aimed to better localize and characterize normal ap...

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