Quantitative Susceptibility Mapping: MRI at 7T versus 3T
نویسندگان
چکیده
منابع مشابه
Susceptibility Weighted MRI of Ferumoxytol at 3T and 7T in Human Brain
Introduction Susceptibility weighted imaging (SWI) is used routinely at clinical field strengths because of its high sensitivity to venous vasculature, blood products, and tissue iron content. This sensitivity is due to the magnetic susceptibility information in the phase images which are used to mask the magnitude images [1]. These susceptibility effects increase with the main magnetic field s...
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Introduction: The signal gains from higher field strengths are attractive for high-resolution skin imaging [1]. However, a legitimate concern is the increase in the spin-lattice relaxation parameter T1. When T1 increases, a prolonged TR is necessary to maintain the signal level, which lengthens the scan time. In this work, we compare skin T1 maps at 1.5T, 3T, and 7T. In addition, we propose a n...
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Introduction: Phase images generated using gradient echo techniques at high field strengths show excellent contrast related to the different magnetic susceptibilities of various brain tissues [1,2]. However, extraction of accurate anatomical information from these images is made difficult by the non-local relationship between the field perturbation and the associated susceptibility distribution...
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In the brain, results have been shown at 7T that are not achievable at lower field strengths. Cardiac imaging at 7T offers similar headline benefits to those images of the brain. More field strength gives more SNR, added to which more field strength increases the T1 and hence increases the effect of contrast agents. This simple idea is appealing in a grant application, but in reality 7T has som...
متن کاملQuantitative susceptibility mapping of human brain at 3T: a multisite reproducibility study.
BACKGROUND AND PURPOSE Quantitative susceptibility mapping of the human brain has demonstrated strong potential in examining iron deposition, which may help in investigating possible brain pathology. This study assesses the reproducibility of quantitative susceptibility mapping across different imaging sites. MATERIALS AND METHODS In this study, the susceptibility values of 5 regions of inter...
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ژورنال
عنوان ژورنال: Journal of Neuroimaging
سال: 2019
ISSN: 1051-2284,1552-6569
DOI: 10.1111/jon.12669