Left atrial late gadolinium enhancement with water-fat separation: the importance of phase-encoding order.
Left atrial late gadolinium enhancement with water-fat separation: the importance of phase-encoding order.
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DOI：
10.1002/jmri.24340
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发表时间：
2014-07
影响因子：
4.4
通讯作者：
Peters, Dana C.
中科院分区：
文献类型：
--
作者：
Shaw, Jaime L.;Knowles, Benjamin R.;Goldfarb, James W.;Manning, Warren J.;Peters, Dana C.
关键词：
比较两种晚期钆增强（LGE）心血管磁共振（CMR）方法：使用水脂分离重建的具有连续相位编码顺序的狄克逊LGE序列和标准脂肪饱和LGE。我们已经实施了双回波狄克逊LGE方法来重建仅水图像，并将其与12名患者首次肺静脉隔离（PVI）手术前的脂肪饱和LGE进行了比较。分析图像的质量和脂肪抑制。由盲法观察者在两组图像（脂肪饱和和仅水LGE）上评价左心房区域（1=显著增强，0=轻度或无增强），并评估一致性。只有水的LGE显示出更好的脂肪抑制趋势（p=0.06），血池信号明显更均匀，流入伪影减少（均p<0.01）。在84%的地区发现脂肪饱和LGE和仅水方法之间的一致性，卡方检验显着相关（p<0.001）。Kappa值为0.52（中等）。脂肪饱和LGE的平均增强节段数高于仅含水LGE（4.2 ±2.7 vs. 3.2±2.9，p=0.03）。两点狄克逊LGE技术减少了由于中心k空间顺序引起的伪影。无论LGE技术如何，都观察到类似的增强模式，脂肪饱和LGE检测到更多的增强。
To compare two late gadolinium enhancement (LGE) cardiovascular magnetic resonance (CMR) methods: a Dixon LGE sequence with sequential phase-encoding order, reconstructed using water-fat separation, and standard fat-saturated LGE. We have implemented a dual-echo Dixon LGE method for reconstructing water-only images, and compared it to fat-saturated LGE in twelve patients prior to their first pulmonary vein isolation (PVI) procedure. Images were analyzed for quality and fat-suppression. Regions of the left atrium were evaluated by a blinded observer (1=prominent enhancement, 0=mild or absent enhancement) on two sets of images (fat-saturated and water-only LGE), and agreement was assessed. Water-only LGE showed a trend toward better fat-suppression (p=0.06), with a significantly more homogeneous blood pool signal and reduced inflow artifacts (both p<0.01). Agreement between fat-saturated LGE and water-only methods was found in 84% of regions, significantly correlated by chi-squared test (p<0.001). The kappa value was 0.52 (moderate). The average number of enhancing segments was higher for fat-saturated LGE than water-only LGE (4.2 ±2.7 vs. 3.2±2.9, p=0.03). The two-point Dixon LGE technique reduces artifacts due to a centric k-space order. A similar enhancement pattern was observed irrespective of the LGE technique, with more enhancement detected by fat-saturated LGE.
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影响因子：
3.3
作者：
Goldfarb, James W.
通讯作者：
Goldfarb, James W.
影响因子：
3.3
作者：
Kellman, Peter;Hernando, Diego;Shah, Saurabh;Zuehlsdorff, Sven;Jerecic, Renate;Mancini, Christine;Liang, Zhi-Pei.;Arai, Andrew E.
通讯作者：
Arai, Andrew E.
影响因子：
3.3
作者：
Ma, JF
通讯作者：
Ma, JF
影响因子：
37.8
作者：
Oakes RS;Badger TJ;Kholmovski EG;Akoum N;Burgon NS;Fish EN;Blauer JJ;Rao SN;DiBella EV;Segerson NM;Daccarett M;Windfelder J;McGann CJ;Parker D;MacLeod RS;Marrouche NF
通讯作者：
Marrouche NF
影响因子：
19.7
作者：
Peters, Dana C.;Wylie, John V.;Manning, Warren J.
通讯作者：
Manning, Warren J.