翻转角度
磁共振成像
快速自旋回波
k-空间
对比噪声比
成像体模
图像分辨率
脉冲序列
采样(信号处理)
自旋回波
核磁共振
物理
图像质量
光学
计算机科学
医学
放射科
人工智能
图像(数学)
探测器
作者
Matthias P. Lichy,Beate Wietek,John P. Mugler,Wilhelm Horger,Marion I. Menzel,Aristotelis G. Anastasiadis,K. C. Siegmann,Thomas Niemeyer,A Königsrainer,Berthold Kiefer,Fritz Schick,Claus D. Claussen,Heinz Peter Schlemmer
标识
DOI:10.1097/01.rli.0000185880.92346.9e
摘要
Purpose: The authors conducted a clinical evaluation of single-slab, 3-dimensional, T2-weighted turbo-spin-echo (TSE) with high sampling efficiency (SPACE) for high isotropic body imaging with large field-of-view (FoV). Materials and Methods: Fifty patients were examined in clinical routine with SPACE (regions of interest: pelvis n = 30, lower spine n = 12, upper spine n = 6, extremities n = 4) at 1.5 T. For achieving a high sampling efficiency, parallel imaging, high turbofactor, and magnetization restore pulses were used. In contrast to a conventional TSE imaging technique with constant flip angle refocusing, the refocusing pulse train of the SPACE sequence consists of variable flip angle radiofrequency pulses along the echo train. Results: Signal-to-noise ratio and contrast-to-noise ratio of SPACE images were of sufficient diagnostic value. The possibility of image reconstruction in multiple planes was of clinical relevance in all cases and simplified data analysis. Conclusion: The achievement of 3-dimensional, T2-weighted TSE magnetic resonance imaging with isotropic and high spatial resolution and interactive 3-dimensional visualization essentially improve the diagnostic potential of magnetic resonance imaging.
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