Balanced SSFP Dixon imaging with banding-artifact reduction at 3 Tesla.
Balanced SSFP Dixon imaging with banding-artifact reduction at 3 Tesla.
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DOI：
10.1002/mrm.25449
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发表时间：
2015-09
影响因子：
3.3
通讯作者：
Saranathan, Manojkumar
中科院分区：
文献类型：
--
作者：
Quist, Brady;Hargreaves, Brian A.;Daniel, Bruce L.;Saranathan, Manojkumar
开发具有带状伪影抑制的3D平衡稳态自由进动（bSSFP）两点狄克逊方法，以提供稳健的高分辨率3D亮流体成像。一个复杂的总和重建相结合的相位循环的bSSFP图像采集在特定的回波时间的鲁棒的脂肪/水分离无条带进行了研究，并比较了基于幅度的方法。使用单峰和多峰脂肪模型进行Bloch模拟，以预测这些方法在宽范围的回波时间（TE）和重复时间（TR）的性能。在模拟和使用体内成像中评价脂肪/水分离的质量和程度。模拟预测，有效的带状伪影抑制和脂肪/水分离的实质性改善在不同于常规回波时间的回波时间是可能的，从而实现改善的空间分辨率。各种回波时间和重复时间之间的比较在体内验证了模拟预测的改进的脂肪/水分离和有效的带状伪影去除。所提出的复和狄克逊3D bSSFP方法能够在不同的回波时间组有效地分离脂肪和水，同时去除带状伪影，提供快速、高分辨率、T2样序列而不模糊。
To develop a 3D balanced steady-state free-precession (bSSFP) two-point Dixon method with banding-artifact suppression to offer robust high-resolution 3D bright-fluid imaging. A complex sum reconstruction that combines phase-cycled bSSFP images acquired at specific echo times for robust fat/water separation without banding was investigated and compared to a magnitude-based method. Bloch simulations using both single-peak and multiple-peak fat models were performed to predict the performance of these methods for a wide range of echo times (TE) and repetition times (TR). The quality and degree of fat/water separation was evaluated in both simulations and using in vivo imaging. Simulations predicted that both effective banding-artifact suppression and substantial improvements in fat/water separation are possible at echo times that are different from conventional echo times, enabling improved spatial resolution. Comparisons between various echo times and repetition times in vivo validated the improved fat/water separation and effective banding-artifact removal predicted by the simulations. The proposed complex sum Dixon 3D bSSFP method is able to effectively separate fat and water at different sets of echo times, while removing banding-artifacts, providing a fast, high-resolution, T2-like sequence without blurring.
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影响因子：
3.3
作者：
Quist, Brady;Hargreaves, Brian A.;Cukur, Tolga;Morrell, Glen R.;Gold, Garry E.;Bangerter, Neal K.
通讯作者：
Bangerter, Neal K.
影响因子：
4.4
作者：
Moran, Catherine J.;Kelcz, Frederick;Block, Walter F.
通讯作者：
Block, Walter F.
影响因子：
3.3
作者：
Bangerter, NK;Hargreaves, BA;Nishimura, DG
通讯作者：
Nishimura, DG
影响因子：
5
作者：
Gold, GE;Han, E;Beaulieu, C
通讯作者：
Beaulieu, C
影响因子：
3.3
作者：
Dimitrov, Ivan E.;Douglas, Deborah;Malloy, Craig R.
通讯作者：
Malloy, Craig R.