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目的使用高时间分辨力MR电影参数扫描,前瞻性比较心衰(HF)病人和健康对照组的心脏射血前收缩期(PEC)和充盈前舒张期(PFR)时间。以射血分数(EF)和纽约心脏协会(NYHA)症状分级为参考标准,评估PEC时间对于HF病人分级的准确性。方法本研究依从HIPAA法案并经
Objective To prospectively compare cardiac ejection pre-systolic (PEC) and pre-filling diastolic (PFR) time in patients with HF and healthy controls using high-resolution MR-film parametric scanning. The ejection fraction (EF) and New York Heart Association (NYHA) symptom scores were used as a reference to assess the accuracy of PEC classification for patients with HF. Methods This study follows the HIPAA Act