Aortic annular dimensions by non-contrast MRI using k-t accelerated 3D cine b-SSFP in pre-procedural assessment for transcatheter aortic valve implantation: a technical feasibility study.
Aortic annular dimensions by non-contrast MRI using k-t accelerated 3D cine b-SSFP in pre-procedural assessment for transcatheter aortic valve implantation: a technical feasibility study.
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K-t加速三维电影b-SSFP非对比磁共振血管环大小在经导管主动脉瓣置入术前评估中的应用：一项技术可行性研究。
DOI：
10.1007/s10554-020-02038-6
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发表时间：
2021-03
期刊：
影响因子：
--
通讯作者：
Carr J
中科院分区：
文献类型：
--
作者：
Aouad P;Jarvis KB;Botelho MF;Serhal A;Blaisdell J;Collins L;Giri S;Kim D;Markl M;Ricciardi MJ;Davidson CJ;Collins J;Carr J
旨在评价k-t加速3D电影b-SSFP（平衡稳态自由进动）作为磁共振成像（MRI）技术在经导管主动脉瓣置换术（TAVR）计划中测量主动脉瓣环面积，与计算机断层扫描血管造影术（CTA）和其他非造影MRI序列相比，缩短了成像时间且不使用造影剂。前瞻性入组了6名志愿者和7名TAVR候选人。志愿者接受了MRI，而TAVR候选人接受了MRI和CTA。在主动脉根部水平获得以下非造影MRI序列：2D电影b-SSFP [GRAPPA（GeneRalized Autocalibrating Partially Parallel Acquisitions），R = 2]、3D电影b-SSFP [GRAPPA R = 2]、导航器触发3D b-SSFP MRA [GRAPPA，R = 2]和k-t加速3D电影b-SSFP [PEAK GRAPPA，R = 5]。获得定性分析和收缩期和舒张期主动脉瓣环面积测量。k-t加速3D电影b-SSFP提供的图像质量可接受，可用于置信诊断，且评价者间一致性非常好。k-t加速3D电影b-SSFP与CTA或其他MRI序列之间的主动脉瓣环测量值无统计学显著差异（p > 0.05）。Bland-Altman分析显示，k-t加速3D电影b-SSFP与其他每种技术之间的瓣环面积测量值无系统差异。在收缩期（ICC = 0.976，p < 0.001）和舒张期（ICC = 0.971，p <0.001），使用k-t加速3D电影b-SSFP测量主动脉瓣环面积的评价者间一致性极佳。K-t加速3D电影b-SSFP是TAVR前评价中评估瓣环尺寸的一种有前景的替代方法，同时在一次屏气期间提供合理的成像参数组合。
To evaluate k–t accelerated 3D cine b-SSFP (balanced steady state free precession) as magnetic resonance imaging (MRI) technique for aortic annular area measurement in transcatheter aortic valve replacement (TAVR) planning compared to computed tomography angiography (CTA) and other non-contrast MRI sequences with reduced imaging time and without contrast administration. 6 volunteers and 7 TAVR candidates were prospectively enrolled. The volunteers underwent an MRI while TAVR candidates underwent an MRI and CTA. The following non-contrast MRI sequences were obtained at the level of the aortic root: 2D cine b-SSFP [GRAPPA (GeneRalized Autocalibrating Partially Parallel Acquisitions), R = 2], 3D cine b-SSFP [GRAPPA R = 2], navigator triggered 3D b-SSFP MRA [GRAPPA, R = 2] and k–t accelerated 3D cine b-SSFP [PEAK GRAPPA, R = 5]. Qualitative analysis and aortic annular area measurements in systole and diastole were obtained. k–t accelerated 3D cine b-SSFP provided image quality that is acceptable for confident diagnosis with very good interrater agreement. There was no statistically significant difference in aortic annular measurements between k–t accelerated 3D cine b-SSFP and CTA or other MRI sequences (p > 0.05). Bland–Altman analysis showed no systemic difference of annular area measurements between k–t accelerated 3D cine b-SSFP and each of the other techniques. There was excellent interrater agreement on aortic annular area measurements during systolic (ICC = 0.976, p < 0.001) and diastolic (ICC = 0.971, p < 0.001) phases using k–t accelerated 3D cine b-SSFP. K–t accelerated 3D cine b-SSFP is a promising alternative for the assessment of annular sizing in pre-TAVR evaluation while offering a reasonable combination of imaging parameters during one breath-hold.
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影响因子：
6.2
作者：
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