Ultrahigh field MR Neuroimaging
نویسندگان
چکیده
منابع مشابه
Ultra-High-Field MR Neuroimaging.
At ultra-high magnetic fields, such as 7T, MR imaging can noninvasively visualize the brain in unprecedented detail and through enhanced contrast mechanisms. The increased SNR and enhanced contrast available at 7T enable higher resolution anatomic and vascular imaging. Greater spectral separation improves detection and characterization of metabolites in spectroscopic imaging. Enhanced blood oxy...
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Background Arterial spin labeled (ASL) 4D MRA has been shown to be a valuable method for simultaneously assessing anatomic structure and dynamic filling of cerebral arteries. Beyond improved SNR and parallel imaging performance, performing these studies at ultrahigh field will benefit from longer T1s resulting in more persistent labeling allowing for improved visualization of distal vessels, es...
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Parallel excitation [1,2] with a multi-element Radio Frequency (RF) transceiver array [3-9] as a contemporary methodology has been advocated for human MR imaging at ultrahigh magnetic fields (7 Tesla and above). In ultrahigh field MRI, the required high operating frequency and thus shortened wavelength of radio frequency waves creates a complex wave behavior and increased phase variation of RF ...
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For prospective motion correction in ultrahigh-field magnetic resonance imaging, optical tracking is employed by fixating a tailored dental splint on the subject’s upper jaw. However, producing such dental splints is cumbersome and exposes subjects to significant discomfort due to the required dental cast preparation. To catalyze the production of these custom-made splints, we propose a semi-au...
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ژورنال
عنوان ژورنال: Topics in Magnetic Resonance Imaging
سال: 2019
ISSN: 0899-3459
DOI: 10.1097/rmr.0000000000000210