cardiac muscle biopsy

例句：

1. 1.The patient underwent a cardiac muscle biopsy to determine the cause of his chest pain.
   患者接受了心脏肌肉活检以确定胸痛的原因。
2. 2.This study aims to investigate the relationship between genetics and cardiac muscle biopsy outcomes.
   这项研究旨在调查遗传因素与心脏肌肉活检结果之间的关系。
3. 3. Cardiac muscle biopsy is an important diagnostic tool for diagnosing heart diseases.
   心脏肌肉活检是诊断心脏病的重要诊断工具。