追溯时间分辨率插值改变了压缩感应电影CMR上的心肌张力量化
Leonard Grob1, Yann Schwerzmann1, Dario Kaiser1
1Department of Anaesthesiology and Pain Medicine, Bern University Hospital, Inselspital, University of Bern, Freiburgstrasse 10, Bern, 3010, Switzerland.
The international journal of cardiovascular imaging
|February 14, 2025
概括
压缩传感 (CS) 心脏成像中的回顾时间分辨率插值 (INTP_TR) 提高了时间分辨率,但显著低估了应变测量. 体积和射出分数仍然可比,但应变分析需要非INTP_TR数据以获得准确性.
科学领域:
- 心血管成像 - 心血管成像
- 医学物理 医学物理
- 生物医学工程 生物医学工程
背景情况:
- 压缩感应 (CS) 能够快速获得心脏电流,非常适合应对压力测试或麻醉等具有挑战性的条件.
- 回溯时间分辨率插值 (INTP_TR) 提高了CS电影的率,但其对双心脏功能的影响尚不清楚.
研究的目的:
- 为了评估INTP_TR对左心室和右心室体积和应变测量的影响,从CS心脏成像.
- 为了确定INTP_TR是否会影响双心脏功能参数的准确性和可比性.
主要方法:
- 19名患者在各种条件下 (休息,压力,麻醉) 接受了CS心脏电影收购.
- 用INTP_TR和不用INTP_TR处理CS数据,并通过盲读器使用特征跟踪对体积和应变参数进行分析.
- 在INTP_TR和非INTP_TR数据集之间进行了测量比较.
主要成果:
- 双体积和射出分数显示了类似的测量,无论INTP_TR.
- 纵向和环形应变的峰值在INTP_TR (p < 0.01) 显著低估,尽管相关性很好 (r > 0.65).
- INTP_TR对应变率分析产生了负面影响,使许多曲线无法使用,而异常应变的诊断准确性仍然很高 (AUC ≥0.95).
结论:
- 虽然INTP_TR提高了CS心脏成像中的时间分辨率,但它损害了双心室应变和应变率的量化和可比性.
- 应对非INTP_TR CS数据进行特征跟踪分析,以检测应变和应变率.
- 体积测量分析和射出分数测量是可靠的或没有INTP_TR.
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