Abstract：
:We report the deployment of spiral acquisition for high-resolution structural imaging at 7T. Long spiral readouts are rendered manageable by an expanded signal model including static off-resonance and B0 dynamics along with k-space trajectories and coil sensitivity maps. Image reconstruction is accomplished by inversion of the signal model using an extension of the iterative non-Cartesian SENSE algorithm. Spiral readouts up to 25 ms are shown to permit whole-brain 2D imaging at 0.5 mm in-plane resolution in less than a minute. A range of options is explored, including proton-density and T2* contrast, acceleration by parallel imaging, different readout orientations, and the extraction of phase images. Results are shown to exhibit competitive image quality along with high geometric consistency.
journal_name
Neuroimagejournal_title
NeuroImageauthors
Kasper L,Engel M,Barmet C,Haeberlin M,Wilm BJ,Dietrich BE,Schmid T,Gross S,Brunner DO,Stephan KE,Pruessmann KPdoi
10.1016/j.neuroimage.2017.07.062subject
Has Abstractpub_date
2018-03-01 00:00:00pages
88-100eissn
1053-8119issn
1095-9572pii
S1053-8119(17)30643-2journal_volume
168pub_type
杂志文章相关文献
NEUROIMAGE文献大全abstract：:The secondary somatosensory cortex (SII) is strongly involved in the processing of somatosensory tactile and nociceptive sensations. We investigated the effect on SII responses of simultaneous painful and nonpainful electrical stimulations delivered to the thumb and little finger. According to the "bimodal" (i.e., noc...
journal_title：NeuroImage
pub_type： 临床试验,杂志文章
doi：10.1016/s1053-8119(03)00439-7
更新日期：2003-11-01 00:00:00
abstract：:This paper proposes a methodology to segment near-tubular fiber bundles from diffusion weighted magnetic resonance images (DW-MRI). Segmentation is simplified by locally reorienting diffusion information based on large-scale fiber bundle geometry. Segmentation is achieved through simple global statistical modeling of ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2008.11.001
更新日期：2009-03-01 00:00:00
abstract：:Current theories of cognitive dysfunction in schizophrenia emphasize an impairment in the ability of individuals suffering from this disorder to monitor their own performance, and adjust their behavior to changing demands. Detecting an error in performance is a critical component of evaluative functions that allow the...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2010.09.046
更新日期：2011-01-15 00:00:00
abstract：:Most current functional Magnetic Resonance Imaging (fMRI) decoding analyses rely on statistical summaries of the data resulting from a deconvolution approach: each stimulation event is associated with a brain response. This standard approach leads to simple learning procedures, yet it is ill-suited for decoding events...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2017.08.018
更新日期：2018-10-15 00:00:00
abstract：:Hippocampal volume reductions are widely observed in schizophrenia. Some studies suggest anterior hippocampal regions are more susceptible and associated with frontal lobe dysfunctions, while others implicate posterior regions. Using high-resolution MR images and novel computational image analysis methods, we identifi...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2003.11.011
更新日期：2004-04-01 00:00:00
abstract：:The cerebral microvasculature plays a key role in the transport of blood and the delivery of nutrients to the cells that perform brain function. Although recent advances in experimental imaging techniques mean that its structure and function can be interrogated to very small length scales, allowing individual vessels ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2018.04.037
更新日期：2018-08-01 00:00:00
abstract：:This review and meta-analysis aims at summarizing and integrating the human neuroimaging studies that report periaqueductal gray (PAG) involvement; 250 original manuscripts on human neuroimaging of the PAG were identified. A narrative review and meta-analysis using activation likelihood estimates is included. Behavior...
journal_title：NeuroImage
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.neuroimage.2011.11.095
更新日期：2012-03-01 00:00:00
abstract：:Use and non-use of body parts during goal-directed action are major forces driving reorganisation of neural processing. We investigated changes in functional brain activity resulting from acute short-term immobilisation of the dominant right hand. Informed by the concept of object affordances, we predicted that the pr...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2014.02.003
更新日期：2014-05-15 00:00:00
abstract：:The medial wall of the frontal cortex is thought to play an important role for bimanual coordination. However, there is uncertainty regarding the exact neuroanatomical regions involved. We compared the activation patterns related to bimanual movements using functional magnetic resonance imaging in 12 healthy right-han...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1006/nimg.2001.0856
更新日期：2001-09-01 00:00:00
abstract：:Alterations in myelin integrity are involved in many neurological disorders and demyelinating diseases, such as multiple sclerosis (MS). Although magnetic resonance imaging (MRI) is the gold standard method to diagnose and monitor MS patients, clinically available MRI protocols show limited specificity for myelin dete...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2019.116415
更新日期：2020-03-01 00:00:00
abstract：:Diffusion imaging of post mortem brains has great potential both as a reference for brain specimens that undergo sectioning, and as a link between in vivo diffusion studies and "gold standard" histology/dissection. While there is a relatively mature literature on post mortem diffusion imaging of animals, human brains ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2011.03.070
更新日期：2011-07-01 00:00:00
abstract：PURPOSE:SPECT imaging with two radiotracers at the same time is feasible if two different radioisotopes are employed, given their distinct energy emission spectra. In the case of 123I and 125I, dual SPECT imaging is not straightforward: 123I emits photons at a principal energy emission spectrum of 143.1-179.9 keV. Howe...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2018.04.063
更新日期：2018-08-01 00:00:00
abstract：:Facilitation of emotional face recognition is an established phenomenon for audiovisual crossmodal stimulation, but not for other sensory modalities. The present study used a crossmodal priming task to identify brain systems controlling olfactory-visual interactions during emotion processing. BOLD fMRI was acquired fo...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2010.07.012
更新日期：2010-11-01 00:00:00
abstract：:In the motion aftereffect (MAE), adapting to a moving stimulus causes a subsequently presented stationary stimulus to appear to move in the opposite direction. Recently, the neural basis of the motion aftereffect has received considerable interest, and a number of brain areas have been implicated in the generation of ...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2013.06.034
更新日期：2013-11-15 00:00:00
abstract：:Effort expenditure has an aversive connotation and it can lower hedonic feelings. In this study, we explored the electrophysiological correlates of the complex interplay of reward processing with cost anticipation. To this aim, healthy adult participants performed a gambling task where the outcome (monetary reward vs....
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2018.02.049
更新日期：2018-06-01 00:00:00
abstract：:Functional localizers are routinely used in neuroimaging studies to test hypotheses about the function of specific brain areas. The specific tasks and stimuli used to localize particular regions vary widely from study to study even when the same cortical region is targeted. Thus, it is important to ask whether task an...
journal_title：NeuroImage
pub_type： 杂志文章,评审
doi：10.1016/j.neuroimage.2009.12.024
更新日期：2010-03-01 00:00:00
abstract：:Whispering is a unique expression mode that is specific to auditory communication. Individuals switch their vocalization mode to whispering especially when affected by inner emotions in certain social contexts, such as in intimate relationships or intimidating social interactions. Although this context-dependent whisp...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2016.08.023
更新日期：2016-11-15 00:00:00
abstract：:The automation of segmentation of subcortical structures in the brain is an active research area. We have comprehensively evaluated four novel methods of fully automated segmentation of subcortical structures using volumetric, spatial overlap and distance-based measures. Two methods are atlas-based - classifier fusion...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2009.05.029
更新日期：2009-10-01 00:00:00
abstract：:Cerebrovascular reactivity (CVR) is a mechanism responsible for maintaining stable perfusion pressure within the brain via smooth muscle mediated modulations of vascular tone. The amplitude of cerebral blood flow (CBF) change in response to a stimulus has been evaluated using Blood Oxygen Level Dependent (BOLD) MRI, h...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2014.05.006
更新日期：2014-09-01 00:00:00
abstract：:The extent to which the generation of mental images draws on the neuronal representations involved in visual perception has been the subject of much debate. To investigate this overlap, we assessed whether adaptation to visual stimuli affects the ability to generate visual mental images; such cross-adaptation would in...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2011.10.022
更新日期：2012-02-01 00:00:00
abstract：:Creative thinking relies on the ability to make remote associations and fruitfully combine unrelated concepts. Hence, original associations and bi-associations (i.e., associations to one and two concepts, respectively) are considered elementary cognitive processes of creative cognition. In this work, we investigated t...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2020.116586
更新日期：2020-04-15 00:00:00
abstract：:The current study used a magnetoencephalogram to investigate the relationship between high-gamma (52-100 Hz) activity within an attention network and individual differences in behavioral performance among healthy elderly adults. We analyzed brain activity in 41 elderly subjects performing a 3-stimulus visual oddball t...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2014.06.037
更新日期：2014-10-15 00:00:00
abstract：:Estimating and modeling functional connectivity in the brain is a challenging problem with potential applications in the understanding of brain organization and various neurological and neuropsychological conditions. An important objective in connectivity analysis is to determine the connections between regions of int...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2013.06.056
更新日期：2013-12-01 00:00:00
abstract：:BOLD fMRI localizes activated brain areas by measuring decreases of deoxygenated hemoglobin (deoxy-Hb) caused by neurovascular coupling. To date, it is unclear whether intracranial pressure (ICP) modifies deoxy-Hb signaling for brain mapping. In addition, ICP elevation can test whether the BOLD post-stimulus undershoo...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2010.04.237
更新日期：2010-08-15 00:00:00
abstract：:Group-based brain connectivity networks have great appeal for researchers interested in gaining further insight into complex brain function and how it changes across different mental states and disease conditions. Accurately constructing these networks presents a daunting challenge given the difficulties associated wi...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2012.01.071
更新日期：2012-04-02 00:00:00
abstract：:Regional brain activity, measured by H215O PET, was investigated during recognition memory and word-stem cued recall of words in order to compare the neural correlates of two components of memory retrieval-effort and success-as a function of task. For each task there was a baseline and two retrieval conditions. In one...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1006/nimg.1998.0363
更新日期：1998-10-01 00:00:00
abstract：:Voxel-based morphometry (VBM) allows the output of structural data in a Statistical Parametric Map of the brain in the same way that the SPM can do with functional data. Using functional magnetic resonance (fMR), we studied brain activation in 14 patients with schizophrenia and 14 matched normal controls. We found sig...
journal_title：NeuroImage
pub_type： 临床试验,杂志文章
doi：10.1016/j.neuroimage.2003.10.027
更新日期：2004-03-01 00:00:00
abstract：:There are now a number of non-invasive methods to image human brain function in-vivo. However, the accuracy of these images remains unknown and can currently only be estimated through the use of invasive recordings to generate a functional ground truth. Neuronal activity follows grey matter structure and accurate esti...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2014.02.033
更新日期：2014-07-01 00:00:00
abstract：:Diffusion tensor imaging (DTI) measures water diffusion within white matter, allowing for in vivo quantification of brain pathways. These pathways often subserve specific functions, and impairment of those functions is often associated with imaging abnormalities. As a method for predicting clinical disability from DTI...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2013.06.020
更新日期：2013-12-01 00:00:00
abstract：:Learning a new language in adulthood is increasingly common and among the most difficult tasks attempted by adults. Adult language learners thus offer an excellent window into the nature of learning-dependent plasticity. The present functional magnetic resonance imaging (fMRI) study was aimed at characterising functio...
journal_title：NeuroImage
pub_type： 杂志文章
doi：10.1016/j.neuroimage.2019.116040
更新日期：2019-11-01 00:00:00
