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Cardiac functional analysis with time-adaptive sensitivity encoding technique: comparison with generalized autocalibrating partially parallel acquisitions technique
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 1
- DOI:
- 10.3760/j.issn:1005-1201.2007.01.004
- Key Word:
- 磁共振成像;心脏功能试验;对比研究
Abstract： 目的 对比分析单次屏气时间调整敏感度编码(TSENSE)和多次屏气全局自动校准部分并行采集(GRAPPA)技术结合真实稳态进动(true FISP)电影,在评价左心室功能中的价值.方法 对健康组30例健康成年人和疾病组32例心脏器质性病变患者用数字表法随机行单次屏气TSENSE和同层数多次屏气GRAPPA左心室短轴电影进行心功能检查.所得图像经心功能分析软件分析后分别获得个体两种方法的左心室射血分数(EF)值、左心室舒张末容积(EDV)、左心室收缩末容积(ESV)、心搏量(SV)、心输出量(CO)、心肌平均重量(MM)和心率(HR),采用配对t检验法对两组两种方法所得各心功能指标进行比较.结果 健康组TSENSE CO较GRAPPA组低[分别为(3.8±0.8)、(4.0±0.9)L/min],差异有统计学意义(t=2.262,P＜0.05);其余心功能参数两种方法差异均无统计学意义(P＞0.05).疾病组左心室功能各指标,包括EF值、EDV、ESV、SV、CO和MM两种方法差异均无统计学意义(P＞0.05).结论 单次屏气TSENSE true FISP电影分析左心室功能简便、快速、准确,基本可以替代多次屏气GRAPPA电影,具有重要的临床实用价值.
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