Comparison of 7 T and 3 T MRI in patients with moyamoya disease

Oh, Beom-Seok; Moon, Hyeong Cheol; Baek, Hyeon Man; Lee, Youn Joo; Kim, Sang Woo; Jeon, Young Jai; Lee, Gun Seok; Kim, Hong Rae; Choi, Jai Ho; Min, Kyung Soo; Lee, Mou Seop; Kim, Young Gyu; Kim, Dong Ho; Kim, Won Seop; Park, Young Seok

doi:10.1016/j.mri.2016.11.019

Cited by 25 publications

(25 citation statements)

References 30 publications

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“…The value of 600 for ε b is normal although the value of t i /ε i is too low in comparison with the values that are given in the literature [15]. As can be seen in Fig.…”

Section: Resultscontrasting

confidence: 46%

“…The increase in dielectric constant thicknesses is, generally, a result of dead layer occurring between the electrode and the thin film [15]. This effect can be explained with defects [16], oxygen atoms can be diffused into the layers or between the layers.…”

Section: Resultsmentioning

confidence: 99%

“…This effect can be explained with defects [16], oxygen atoms can be diffused into the layers or between the layers. Dielectric constants of thin films are expressed as a sum of the interfacial and bulk dielectric constants as given below [15][16][17]:…”

Section: Resultsmentioning

confidence: 99%

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Cobalt–titanium multilayer thin films: Effect of thickness of titanium spacer layer on impedance properties

Şentürk

Erkovan

Okutan

et al. 2015

Materials Science in Semiconductor Processing

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“…The value of 600 for ε b is normal although the value of t i /ε i is too low in comparison with the values that are given in the literature [15]. As can be seen in Fig.…”

Section: Resultscontrasting

confidence: 46%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Cobalt–titanium multilayer thin films: Effect of thickness of titanium spacer layer on impedance properties

Şentürk

Erkovan

Okutan

et al. 2015

Materials Science in Semiconductor Processing

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“…24) Furthermore, the use of ultrahigh field (7 T) MRI has increased for in vivo brain imaging, offering a higher signaltonoise ratio (SNR) and contrasttonoise ratio, which can result in higher spatial resolution. Compared with conventional fieldstrength MRI (1.5-3 T), the diagnostic val ue of 7 T MRI has been demonstrated for polymicrogyria, 25) moyamoya disease, 26) hippocampal sclerosis, 27) brain tumors, 28) stroke, 29) and multiple sclerosis ( Fig. 1).…”

Section: Advances In Structural Neuroimaging 1 Ultra-high-field Mrimentioning

confidence: 99%

Advanced neuroimaging techniques for evaluating pediatric epilepsy

Lee

2020

Clin Exp Pediatr

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Accurate localization of the seizure onset zone is important for better seizure outcomes and preventing deficits following epilepsy surgery. Recent advances in neuroimaging techniques have increased our understanding of the underlying etiology and improved our ability to noninvasively identify the seizure onset zone. Using epilepsy-specific magnetic resonance imaging (MRI) protocols, structural MRI allows better detection of the seizure onset zone, particularly when it is interpreted by experienced neuroradiologists. Ultra-high-field imaging and postprocessing analysis with automated machine learning algorithms can detect subtle structural abnormalities in MRI-negative patients. Tractography derived from diffusion tensor imaging can delineate white matter connections associated with epilepsy or eloquent function, thus, preventing deficits after epilepsy surgery. Arterial spin-labeling perfusion MRI, simultaneous electroencephalography (EEG)-functional MRI (fMRI), and magnetoencephalography (MEG) are noinvasive imaging modalities that can be used to localize the epileptogenic foci and assist in planning epilepsy surgery with positron emission tomography, ictal single-photon emission computed tomography, and intracranial EEG monitoring. MEG and fMRI can localize and lateralize the area of the cortex that is essential for language, motor, and memory function and identify its relationship with planned surgical resection sites to reduce the risk of neurological impairments. These advanced structural and functional imaging modalities can be combined with postprocessing methods to better understand the epileptic network and obtain valuable clinical information for predicting long-term outcomes in pediatric epilepsy.

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“…A lower resolution MPRAGE sequence was therefore included in the study protocol as previously applied in several cerebrovascular studies including MMA studies. 17,38 Finally, the study design did not include MRA at conventional field strengths (1.5T or 3T) due to heterogeneous previous imaging sessions, but numerous recent studies have already shown the superiority of 7T over 3T TOF-MRA for delineation of submillimeter vessels. 17,37…”

Section: Comparison Of 7t Mra and Dsa Regarding The Number Of Detectementioning

confidence: 99%

Visualization and Classification of Deeply Seated Collateral Networks in Moyamoya Angiopathy with 7T MRI

Matsushige

Kraemer

Sato

et al. 2018

AJNR Am J Neuroradiol

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Comparison of 7 T and 3 T MRI in patients with moyamoya disease

Cited by 25 publications

References 30 publications

Cobalt–titanium multilayer thin films: Effect of thickness of titanium spacer layer on impedance properties

Cobalt–titanium multilayer thin films: Effect of thickness of titanium spacer layer on impedance properties

Advanced neuroimaging techniques for evaluating pediatric epilepsy

Visualization and Classification of Deeply Seated Collateral Networks in Moyamoya Angiopathy with 7T MRI

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