نتایج جستجو برای: 3tesla
تعداد نتایج: 62 فیلتر نتایج به سال:
Hippocampal pathology has been shown to be central to the pathophysiology of schizophrenia and a putative risk marker for developing psychosis. We applied both (1)H MRS (proton magnetic resonance spectroscopy) at 3Tesla and voxel-based morphometry (VBM) of high-resolution brain structural images in order to study the association of the metabolites glutamate (Glu) and N-acetyl-aspartate (NAA) in...
This study is intended as a review of 3Tesla (T) magnetic resonance (MR) imaging of the triangular fibrocartilage complex (TFCC). The recent advances in MR imaging, which includes high field strength magnets, multi-channel coils, and isotropic 3-dimensional (3D) sequences have enabled the visualization of precise TFCC anatomy with high spatial and contrast resolution. In addition to the routine...
Introduction In the last 10 years the use of MR-scanners with a magnetic field stronger than 3 Tesla (“Ultra-high field MRI”, ie. UHF-MRI, defined as 7 9.4 Tesla in this presentation) has increased sharply, mainly driven by the fact that the three main manufacturers decided to develop 7Tesla MRI scanners for research purposes. More recently, also human 9.4 Tesla research MRI scanners are offere...
[Introduction] Cranial nerves are small nerves that control various sensory and/or motor functions and these nerves emerge from the brainstem. Conventional anatomical scan such as T1/T2 weighed MRI is commonly used to identify these nerves, but sometimes it is difficult to track the pathways due to complex structure. To visualize complex fiber structure, Diffusion Tensor Imaging (DTI) has been ...
Ductal carcinoma in situ: magnetic resonance and ultrasound imaging in mouse models of breast cancer
The earliest stage of breast cancer, ductal carcinoma in situ (DCIS), is a remarkably heterogeneous disease with diverse molecular and prognostic subtypes. Mouse models of breast cancer offer an effective experimental framework in which to investigate DCIS, and biomedical imaging can provide potential insights into the biology of these models. In this study, we develop a high resolution, multi-...
Schizotypal traits are phenotypic risk factors for schizophrenia, associated with biological changes across a putative schizophrenia spectrum. In this study, we tested the hypothesis that brain structural changes in key brain areas relevant to this spectrum (esp. medial and lateral prefrontal cortex) would vary across different degrees of schizotypal trait expression and/or phenotypic markers o...
AGNETIC resonance imaging (MRI) provides an excellent modality for distinguishing different tissues in the human body, which is essential for medical applications. When MRI is used for stereotactic treatment planning, its geometric accuracy is crucial. Previous studies have been conducted to correct the distortion caused by nonlinearity of the MRI scanner’s magnetic gradient fields by imaging a...
BACKGROUND Reduced N-acetyl-aspartate (NAA) levels in magnetic resonance spectroscopy (MRS) may visualize axonal damage even in the normal appearing white matter (NAWM). Demyelination and axonal degeneration are a hallmark in multiple sclerosis (MS). OBJECTIVE To define the extent of axonal degeneration in the NAWM in the remote from focal lesions in patients with relapsing-remitting (RRMS) a...
OBJECTIVES To assess and compare cortical thickness (CTh) of patients with prodromal Dementia with Lewy bodies (pro-DLB), prodromal Alzheimer's disease (pro-AD), DLB dementia (DLB-d), AD dementia (AD-d) and normal ageing. METHODS Study participants(28 pro-DLB, 27 pro-AD, 31 DLB-d, 54 AD-d and 33 elderly controls) underwent 3Tesla T1 3D MRI and detailed clinical and cognitive assessments. We u...
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