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• W2026080056 abstract "Objective: Magnetic resonance imaging (MRI) at 3 T is significantly different than 1.5 T and needs to be optimized due to increased signal-to-noise ratio (SNR) and specific absorption ratio (SAR). This study tests the hypothesis that first-pass myocardial perfusion MRI using saturation recovery (SR)-TrueFISP with parallel imaging is superior to SR-TurboFLASH and a more achievable technique for clinical application at 3 T. Materials and Methods: Myocardial perfusion imaging was performed on 12 subjects using SR-TurboFLASH and SR-TrueFISP sequences combined with parallel imaging. Four myocardial slices were acquired and evaluated by image segmentation. Quality of the measurements was determined from SNR, contrast-to-noise ratio (CNR), enhancement-to-noise ratio (ENR), and myocardial perfusion upslope. Data were analyzed using a 2-way ANOVA with imaging method and segment number as the independent variables. Results: SNR, CNR, ENR, and upslope were significantly higher for SR-TrueFISP versus SR-TurboFLASH (P < 0.001). Significant differences in SNR, CNR, ENR, and upslope were found among the myocardial segments (P < 0.005). Conclusions: Optimized SR-TrueFISP first-pass myocardial perfusion MRI at 3 T has superior image quality compared with SR-TurboFLASH, independent of the myocardial segment analyzed. However, coil sensitivity nonuniformities and dielectric resonance effects cause signal intensity differences between myocardial segments that must be accounted for when interpreting 3 T perfusion studies." @default.
• W2026080056 created "2016-06-24" @default.
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• W2026080056 date "2007-06-01" @default.
• W2026080056 modified "2023-09-26" @default.
• W2026080056 title "Contrast-Enhanced First-Pass Myocardial Perfusion Magnetic Resonance Imaging With Parallel Acquisition at 3.0 Tesla" @default.
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• W2026080056 doi "https://doi.org/10.1097/01.rli.0000262566.89636.3f" @default.
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