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- W2068356156 abstract "Methods Clinical h-EPI stress/rest perfusion studies were reviewed after phantom images drew our attention to the off-resonance sensitivity of the h-EPI technique. All work was done at 1.5 T (Avanto, Siemens); h-EPI (4 echoes); TR/TE 5.1/1.7 ms; pixel size 2.8 × 2.8 × 8 mm; flip angle 30 deg; bandwidth 1860 Hz/pixel; saturation-recovery (TI = 90 ms); TSENSE with R = 2; Gd-based CA 0.1 mmol/kg at 3.5 ml/s. The sequence was also used to image across a hollow diamagnetic gelatine cylinder containing 12.5 mmol/L Gd-DTPA solution, forming a magnetostatic and relaxation-time model of the LV during CA first-pass. Phantom images were acquired at two scanner reference frequencies, approximating the gelatine myocardium and LV blood frequencies. For comparison, the phantom was also imaged with a balanced-SSFP perfusion sequence. For one in-vivo perfusion study, accumulated phase-errors corresponding to scanner reference frequency offsets were applied to the stored raw-data and images were repeatreconstructed to examine h-EPI's sensitivity to the frequency used for the patient." @default.
- W2068356156 created "2016-06-24" @default.
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- W2068356156 date "2010-01-01" @default.
- W2068356156 modified "2023-09-27" @default.
- W2068356156 title "Myocardial Perfusion Imaging artifacts: centric h-EPI and its sensitivity to frequency errors" @default.
- W2068356156 doi "https://doi.org/10.1186/1532-429x-12-s1-p219" @default.
- W2068356156 hasPublicationYear "2010" @default.
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