Functional MR
Hemodynamic Response Changes in Cerebrovascular Disease: Implications for Functional MR Imaging
... past, MR imaging techniques based on BOLD signal have been performed with a block par- ...event-related functional MR imag- ing was developed to probe the transient hemody- namic response to a short ...
7
The Effect of Age on Odor Stimulated Functional MR Imaging
... the functional MR imaging studies consisted of a sagittal T1-weighted (500/11/1 [TR/TE/ excitations]) image followed by axial T1-weighted (500/11/1) 5-mm interleaved images with a matrix of 192 3 256 ...
9
Effect of motion outside the field of view on functional MR
... PURPOSE: To evaluate the effect of objects moving outside the field of view on functional MR imaging. METHODS: Echo-planar image sequences were acquired in the sagittal plane of a stationary phantom or of ...
5
Functional MR activation correlated with intraoperative cortical mapping
... of functional MR imaging by comparing it with intraoperative electrocortical ...METHODS: Functional MR imaging was performed in 28 patients before awake craniotomy and intraoperative ...
5
Use of functional MR to map language in multilingual volunteers
... This study suggests that functional MR imag- ing can show differences in the organization of different languages in a multilingual person. The results of this pilot study are consistent with this previously ...
5
Functional MR Imaging of the Human Cervical Spinal Cord
... Our results validate a robust noninvasive method for reliably assessing spinal cord function by using standard clinical imagers, surface coils, and com- mercial pulse sequences. The BOLD response was identified at ...
7
Linear Dynamic Sparse Modelling for functional MR imaging
... a functional MRI sequence is determined by reconstruction algorithms as well as the information obtained from ...of functional MR images are sparse over time in the wavelet ...
8
Mapping of the sensorimotor cortex: functional MR and magnetic source imaging
... with functional MR imaging in three cases; this was inherently avoided with magnetic source imaging by the spatial position of the detector probe and its restricted ...that functional MR ...
10
The Mind’s Eye: Functional MR Imaging Evaluation of Golf Motor Imagery
... axial plane, positioned to cover the entire cortex and most of the cerebellum. Signal intensity bandwidth was 1953 Hz/pixel. Prospective and retrospective motion correction was used for all functional MR ...
9
Quantification and Reproducibility of Tracking Cortical Extent of Activation by Use of Functional MR Imaging and Magnetoencephalography
... Functional MR imaging was performed using a GE Signa 1.5-T imager (Signa version 5.6; GE Medical Systems, Mil- waukee, WI), equipped with 25 mT/m gradient coils. Multi- section gradient-recalled echo-planar ...
11
Central Processing of Rectal Pain: A Functional MR Imaging Study
... a functional MR imaging study (8), activation of the anterior cingulate gyrus was obtained for moderate or in- tense pain induced by painful electrical nerve stim- ulation, and was undetected for mild ...
5
Reproducibility of Visual Activation in Functional MR Imaging and Effects of Postprocessing
... by functional MR imaging can be observed and the retinotopic organization in the visual cortex has been demonstrated in detail by functional MR im- aging (3), the visual cortex seems to be the ...
6
Functional MR Imaging in Alzheimer's Disease during Memory Encoding
... that functional MR imaging signal changes can differentiate brain activation in the MTL in elderly control volunteers from that in pa- tients with mild to moderate forms of Alzheimer’s disease (for task 1), ...
7
Precision of Cerebrovascular Reactivity Assessment with Use of Different Quantification Methods for Hypercapnia Functional MR Imaging
... (BOLD) MR imaging contrast in response to hypercapnia, but the reliability of its quantification is ...hypercapnia functional MR imaging (fMRI) in healthy volunteers and to assess the effects of ...
6
Assessment of Functional MR Imaging in Neurosurgical Planning
... of functional MR imaging into clinical practice, an overwhelming emphasis has been placed on its potential to replace invasive mapping ...that functional MR imaging must replace ex- isting ...
9
Functional Connectivity in the Thalamus and Hippocampus Studied with Functional MR Imaging
... With functional MR imaging, functional connec- tivity has been measured in the motor cortex, visual cortex, and auditory cortex (5, 10, ...measuring functional connectivity, a se- quence of ...
5
Reproducibility of Functional MR Imaging Results Using Two Different MR Systems
... applying functional MR imaging in a clinical setting has grown, in partic- ular in neuro-oncology where functional MR imaging could be used as a helpful tool for presurgical plan- ning ...the ...
6
Functional MR Imaging on an Open 1T MR Imaging System: Exploiting the Advantages of an Open MR Imaging System for Functional MR Imaging
... All subjects underwent 2 scanning sessions on an open 1T whole- body scanner (Panorama; Philips Best, the Netherlands) and 1 scan- ning session on a 3T whole-body scanner (Intera; Philips Healthcare) on different days. ...
5
Intrasubject Reproducibility of Functional MR Imaging Activation in Language Tasks
... the specific task) alternating with baseline conditions of similar dura- tions. Visual stimuli were projected onto a screen located at the end of the scanner patient table by using the Presentation software package ...
7
The Role of Functional MR Imaging in Patients with Ischemia in the Visual Cortex
... sion, MR imaging is usually performed, and ap- parent lesions such as infarction, hemorrhage, or tumor can then be ...es, MR imaging may show no abnormal ...of functional activation in the visual ...
7