The functional lumen imaging probe (FLIP) is a diagnostic tool that utilizes impedance planimetry to allow the assessment of luminal diameter and distensibility. It has been used primarily in esophageal diseases, in particular, in the assessment of achalasia, esophagogastric junction outflow obstruction, and eosinophilic esophagitis (EoE). The usage and publications have increased over the past decade and it is now an essential tool in the armamentarium of the esophagologist. Indications are emerging outside of the esophagus, in particular with regard to gastroparesis. Our paper will review the history of FLIP, optimal current usage, data for key esophageal disorders (including achalasia, reflux, and EoE), data for nonesophageal disorders, and our sense as to whether FLIP is ready for prime time, as well as gaps in evidence and suggestions for future research.

中文翻译：

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胃肠道疾病的功能性管腔成像探针：过去、现在和未来

功能性管腔成像探头 (FLIP) 是一种诊断工具，它利用阻抗面积测量法来评估管腔直径和扩张性。它主要用于食管疾病，特别是用于评估贲门失弛缓症、食管胃交界处流出道梗阻和嗜酸性粒细胞性食管炎 (EoE)。在过去的十年中，它的使用和出版物有所增加，现在它是食道科医生的必备工具。食道外的适应症正在出现，尤其是胃轻瘫。我们的论文将回顾 FLIP 的历史、当前的最佳使用情况、主要食管疾病（包括贲门失弛缓症、反流和 EoE）的数据、非食管疾病的数据以及我们对 FLIP 是否准备好迎接黄金时段的看法，