Dose and pulse sequence considerations for hyperpolarized 129Xe ventilation MRI
نویسندگان
چکیده
منابع مشابه
Fast dynamic ventilation MRI of hyperpolarized 129Xe using spiral imaging
PURPOSE To develop and optimize a rapid dynamic hyperpolarized 129 Xe ventilation (DXeV) MRI protocol and investigate the feasibility of capturing pulmonary signal-time curves in human lungs. THEORY AND METHODS Spiral k-space trajectories were designed with the number of interleaves Nint = 1, 2, 4, and 8 corresponding to voxel sizes of 8 mm, 5 mm, 4 mm, and 2.5 mm, respectively, for field of...
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Magnetic-resonance imaging using the novel MR signal (26% Xe), which was contained in a 25 cm cylindrical glass cell (2 cm diameter, 7.5 cm length) , at 3 atm, along source provided by hyperpolarized noble gases Xe and He may prove to be an important new diagnostic technique with 3 atm N2 buffer gas and a small quantity of solid Rb. Xe was hyperpolarized in the fringe field of a 1.5 T superfor ...
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Introduction: MRI using hyperpolarized gases (HPG) provides unique functional and structural information about the lung. However, the agent that has been most commonly used in humans, He3, is in limited world supply and thus, if widespread clinical application of HPG-MRI is to occur, it likely will require the alternative agent, Xe129. The solubility and chemical-shift characteristics of Xe129 ...
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Hyperpolarized (hp) (83)Kr is a promising MRI contrast agent for the diagnosis of pulmonary diseases affecting the surface of the respiratory zone. However, the distinct physical properties of (83)Kr that enable unique MRI contrast also complicate the production of hp (83)Kr. This work presents a previously unexplored approach in the generation of hp (83)Kr that can likewise be used for the pro...
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ژورنال
عنوان ژورنال: Magnetic Resonance Imaging
سال: 2015
ISSN: 0730-725X
DOI: 10.1016/j.mri.2015.04.005