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• W2073640890 abstract "Background: Reliable detection of myocardial scarring in nonischemic cardiomyopathy is time-consuming using techniques that require determination of optimal inversion time. Therefore we evaluated an inversion-time-insensitive approach using a fast phase-sensitive inversion recovery (PSIR) sequence to detect and quantify late gadolinium enhancement (LGE). Patients and Methods: Twenty patients (mean age 40 years, 9 females) with nonischemic cardiomyopathy and evidence of LGE were evaluated. After administration of 0.2 mmol/kg gadolinium diethylene triamine pentaacetic acid, a segmented 2D inversion recovery turbo fast low-angle shot gradient echo recall (GRE) sequence [echo time (TE) 4.3 milliseconds, repetition time (TR) 750 milliseconds, α 30°, voxel size 1.7 × 1.3 × 8–10 mm] was obtained and served as the standard of reference. Second, a fast multislice single-shot 2D PSIR sequence (TE 1.1 millisecond, TR 700 milliseconds, α 40°, voxel size 2.5 × 1.7 × 8–10 mm) was acquired in the same slice positions. The PSIRIR images were used to analyze LGE. Altogether 53 short-axis slices with LGE were evaluated. Contrast-to-noise ratio and area of LGE were calculated and compared by 2 experienced readers. Image quality and confidence level for identification of LGE were rated on 5-point scales. Interobserver variability was evaluated in 10 patients. Results: All images were interpretable. Imaging time was reduced from 385 ± 127 seconds to 20 ± 3 seconds (P < 0.001). Contrast-to-noise ratio was 8.29 for PSIRmag and 12.07 for the conventional GRE images (P < 0.001). The mean area of LGE was 1.01 ± 0.62 cm2 for the GRE sequence and 1.10 ± 0.62 cm2 for PSIRIR (P = NS). The general linear model showed no interaction between the results and no significant difference of the mean (r = 0.09, mean difference 0.09 cm2). The overall interobserver variability of PSIRIR and GRE was excellent, with Pearson's correlation coefficients of r = 0.96 for PSIRIR and r = 0.98 for GRE. PSIRIR and conventional GRE were comparable in terms of image quality and confidence level (image quality: 1.6 ± 0.67 vs. 1.5 ± 0.93, P = NS; confidence level: 1.4 ± 0.84 vs. 1.3 ± 0.5; P = NS). Conclusions: Fast PSIR sequences enable accurate detection and quantification of LGE in nonischemic cardiomyopathies. The examination time can be significantly shortened using the single-shot approach of the PSIR technique." @default.
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• W2073640890 date "2007-10-01" @default.
• W2073640890 modified "2023-09-27" @default.
• W2073640890 title "Assessment of Late Gadolinium Enhancement in Nonischemic Cardiomyopathy" @default.
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• W2073640890 doi "https://doi.org/10.1097/rli.0b013e3180661a95" @default.
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