High‐Resolution B‐Mode Ultrasound Reading Methods in the Atherosclerosis Risk in Communities (ARIC) Cohort Tập 1 Số 4 - Trang 168-172 - 1991
Ward A. Riley, Ralph W. Barnes, M. Gene Bond, Greg Evans, Lloyd E. Chambless, Gerardo Heiss
To measure the association of cardiovascular disease risk factors with carotid artery diameter and thickness of the intima and media in the general population, standardized ultrasound scanning and reading protocols were performed on 15,800 individuals in the multicenter Atherosclerosis Risk in Communities (ARIC) Study. In a randomly selected subset of 855 participants, the mean artery diam...... hiện toàn bộ
Prevalence of White Matter Hyperintensities in a Young Healthy Population Tập 16 Số 3 - Trang 243-251 - 2006
Ramona O. Hopkins, Callie J. Beck, David L. Burnett, Lindell K. Weaver, Jeff Victoroff, Erin D. Bigler
ABSTRACT Background and Purpose. White matter hyperintensities (WMHs) are bright objects observed in the white matter on brain magnetic resonance (MR) imaging. WMHs are often reported as “normal” findings but may represent pathological changes. The prevalence of WMHs appears to increase with increasing age although both the typical timing...... hiện toàn bộ
Brain Volume Changes on Longitudinal Magnetic Resonance Imaging in Normal Older People Tập 11 Số 4 - Trang 393-400 - 2001
Yong Tang, Gregory T. Whitman, Iván A. López, Robert W. Baloh
ABSTRACT Background and Purpose. The purpose of this study is to investigate the longitudinal age‐related changes in human brain volume using stereological methods. Methods. Sixty‐six older participants (34 men, 32 women, age [mean ± SD] 78.9 ± 3.3 years, range 74–87 years) with normal baseline and follow‐up exa...... hiện toàn bộ
Magnetization Transfer MRI in Multiple Sclerosis Tập 17 Số s1 - 2007
Massimo Filippi, Federica Agosta
ABSTRACTIn multiple sclerosis (MS), conventional magnetic resonance imaging (cMRI) has proved to be sensitive for detecting lesions and their changes over time. However, cMRI is not able to characterize and quantify the tissue damage within and outside such lesions. Magnetization transfer (MT) MRI is a quantitative technique with the potential to overcome this limi...... hiện toàn bộ
In vivo Detection of Cortical Microinfarcts on Ultrahigh‐Field MRI Tập 23 Số 1 - Trang 28-32 - 2013
Yuichiro Ii, Masayuki Maeda, Hirotaka Kida, Ko Matsuo, Akihiro Shindo, Akira Taniguchi, Hidekazu Tomimoto
ABSTRACTBACKGROUND AND PURPOSECortical microinfarcts (CMIs) are detected as small foci restricted to the cerebral cortex in autopsy brains. CMIs are thought to be caused by cerebral amyloid angiopathy (CAA) in the elderly and may be a risk for dementia. We aimed to visualize CMIs, which remain invisible on con...... hiện toàn bộ
Tomographic Electroencephalography/Magnetoencephalography Tập 5 Số 1 - Trang 35-45 - 1995
Robert W. Thatcher
New developments in multimodal registration of electroencephalography (EEG), magnetic resonance imaging (MRI), and pOSitron emission tomography (PET) are presented as a method to create a tomographic EEG. Three‐dimensional information about the x,y,z location of the sources of event‐related potentials is corroborated through the use of experimental design and coregistration with MRI and PE...... hiện toàn bộ
Spinal Cord Pilomyxoid Astrocytoma: An Unusual Tumor Tập 17 Số 4 - Trang 371-374 - 2007
Mishal Mendiratta‐Lala, Shehanaz Ellika, Jorge A. Gutiérrez, Suresh Patel, Rajan Jain
ABSTRACT We present the imaging findings of a case of spinal pilomyxoid astrocytoma in a 29‐year‐old woman with history of neck and back pain and weakness of bilateral upper extremities. A contrast‐enhanced magnetic resonance (MR) imaging study revealed an extensive intradural extramedullary lesion occupying most of the thecal sac extending from mid cerv...... hiện toàn bộ
Interobserver and Intraobserver Reliability of Venous Transcranial Color‐Coded Flow Velocity Measurements Tập 11 Số 4 - Trang 385-392 - 2001
Erwin Stolz, Sait Seymen Babacan, Rolf-Hasso Bödeker, Tibo Gerriets, Manfred Kaps
ABSTRACT Background and Purpose. Venous transcranial color‐coded duplex sonography is a new technique for noninvasive evaluation of the intracranial venous system. However, the interobserver and intraobserver reliability of this method is unclear. Methods. In 23 healthy volunteers (30 ± 7.3 years of age), the de...... hiện toàn bộ