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• W2785383792 abstract "<h3>BACKGROUND AND PURPOSE:</h3> In view of the recent observations that gadolinium deposits in brain tissue after intravenous injection, our aim of this study was to compare signal changes in the globus pallidus and dentate nucleus on unenhanced T1-weighted MR images in patients receiving serial doses of gadobutrol, a macrocyclic gadolinium-based contrast agent, with those seen in patients receiving linear gadolinium-based contrast agents. <h3>MATERIALS AND METHODS:</h3> This was a retrospective analysis of on-site patients with brain tumors. Fifty-nine patients received only gadobutrol, and 60 patients received only linear gadolinium-based contrast agents. Linear gadolinium-based contrast agents included gadoversetamide, gadobenate dimeglumine, and gadodiamide. T1 signal intensity in the globus pallidus, dentate nucleus, and pons was measured on the precontrast portions of patients9 first and seventh brain MRIs. Ratios of signal intensity comparing the globus pallidus with the pons (globus pallidus/pons) and dentate nucleus with the pons (dentate nucleus/pons) were calculated. Changes in the above signal intensity ratios were compared within the gadobutrol and linear agent groups, as well as between groups. <h3>RESULTS:</h3> The dentate nucleus/pons signal ratio increased in the linear gadolinium-based contrast agent group (<i>t</i> = 4.215, <i>P</i> < .001), while no significant increase was seen in the gadobutrol group (<i>t</i> = −1.422, <i>P</i> = .08). The globus pallidus/pons ratios followed similarly, with an increase in the linear gadolinium-based contrast agent group (<i>t</i> = 2.931, <i>P</i> < .0001) and no significant change in those receiving gadobutrol (<i>t</i> = 0.684, <i>P</i> = .25). <h3>CONCLUSIONS:</h3> Successive doses of gadobutrol do not result in T1 shortening compared with changes seen in linear gadolinium-based contrast agents." @default.
• W2785383792 created "2018-02-23" @default.
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• W2785383792 date "2018-02-01" @default.
• W2785383792 modified "2023-10-16" @default.
• W2785383792 title "High Signal Intensity in the Dentate Nucleus and Globus Pallidus on Unenhanced T1-Weighted MR Images: Comparison between Gadobutrol and Linear Gadolinium-Based Contrast Agents" @default.
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• W2785383792 doi "https://doi.org/10.3174/ajnr.a5538" @default.
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