Bronchoalveolar lavage (BAL) is frequently used in pulmonary medicine though it requires further optimization. Practical obstacles such as patient safety and procedural limitation have to date precluded large, controlled trials aimed at standardization of BAL procedure. Indeed, BAL guidelines are based on observational data. Innovative research methods are necessary to advance the clinical practice of BAL.

中文翻译：

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一种评估支气管肺泡灌洗参数的新型糊化硫酸钡注射方法

支气管肺泡灌洗（BAL）在肺部医学中经常使用，但需要进一步优化。迄今为止，诸如患者安全和程序限制等实际障碍阻碍了旨在 BAL 程序标准化的大型对照试验。事实上，BAL 指南是基于观察数据的。创新的研究方法对于推进 BAL 的临床实践是必要的。