Department of Radiology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, Japan.
Ehime University Hospital, Shitsukawa, Toon, Ehime, Japan.
Jpn J Radiol. 2023 Feb;41(2):142-152. doi: 10.1007/s11604-022-01344-4. Epub 2022 Oct 13.
We applied a combination of compressed-sensing (CS) and retrospective motion correction to free-breathing cine magnetic resonance (MR) (FBCS cine MoCo). We validated FBCS cine MoCo by comparing it with breath-hold (BH) conventional cine MR.
Thirty-five volunteers underwent both FBCS cine MoCo and BH conventional cine MR imaging. Twelve consecutive short-axis cine images were obtained. We compared the examination time, image quality and biventricular volumetric assessments between the two cine MR.
FBCS cine MoCo required a significantly shorter examination time than BH conventional cine (135 s [110-143 s] vs. 198 s [186-349 s], p < 0.001). The image quality scores were not significantly different between the two techniques (End-diastole: FBCS cine MoCo; 4.7 ± 0.5 vs. BH conventional cine; 4.6 ± 0.6; p = 0.77, End-systole: FBCS cine MoCo; 4.5 ± 0.5 vs. BH conventional cine; 4.5 ± 0.6; p = 0.52). No significant differences were observed in all biventricular volumetric assessments between the two techniques. The mean differences with 95% confidence interval (CI), based on Bland-Altman analysis, were - 0.3 mL (- 8.2 - 7.5 mL) for LVEDV, 0.2 mL (- 5.6 - 5.9 mL) for LVESV, - 0.5 mL (- 6.3 - 5.2 mL) for LVSV, - 0.3% (- 3.5 - 3.0%) for LVEF, - 0.1 g (- 8.5 - 8.3 g) for LVED mass, 1.4 mL (- 15.5 - 18.3 mL) for RVEDV, 2.1 mL (- 11.2 - 15.3 mL) for RVESV, - 0.6 mL (- 9.7 - 8.4 mL) for RVSV, - 1.0% (- 6.5 - 4.6%) for RVEF.
FBCS cine MoCo can potentially replace multiple BH conventional cine MR and improve the clinical utility of cine MR.
我们将压缩感知(CS)与回顾性运动校正相结合,应用于自由呼吸电影磁共振成像(FBCS 电影 MoCo)。我们通过比较 FBCS 电影 MoCo 与屏气(BH)传统电影磁共振成像,验证了 FBCS 电影 MoCo 的可行性。
35 名志愿者均接受了 FBCS 电影 MoCo 和 BH 传统电影磁共振成像检查。获得 12 个连续的短轴电影图像。我们比较了两种电影磁共振成像的检查时间、图像质量和双心室容积评估。
FBCS 电影 MoCo 的检查时间明显短于 BH 传统电影磁共振成像(135 s [110-143 s] 比 198 s [186-349 s],p < 0.001)。两种技术的图像质量评分无显著差异(舒张末期:FBCS 电影 MoCo,4.7 ± 0.5 比 BH 传统电影磁共振成像,4.6 ± 0.6,p = 0.77;收缩末期:FBCS 电影 MoCo,4.5 ± 0.5 比 BH 传统电影磁共振成像,4.5 ± 0.6,p = 0.52)。两种技术的所有双心室容积评估均无显著差异。基于 Bland-Altman 分析的均值差异及 95%置信区间(CI)为:LVEDV 为-0.3 mL(-8.2 至 7.5 mL),LVESV 为 0.2 mL(-5.6 至 5.9 mL),LVSV 为-0.5 mL(-6.3 至 5.2 mL),LVEF 为-0.3%(-3.5 至 3.0%),LVED 质量为-0.1 g(-8.5 至 8.3 g),RVEDV 为 1.4 mL(-15.5 至 18.3 mL),RVESV 为 2.1 mL(-11.2 至 15.3 mL),RVSV 为-0.6 mL(-9.7 至 8.4 mL),RVEF 为-1.0%(-6.5 至 4.6%)。
FBCS 电影 MoCo 可替代多次 BH 传统电影磁共振成像,提高电影磁共振成像的临床实用性。