Elwany S
J Laryngol Otol. 1987 Jun;101(6):569-73. doi: 10.1017/s0022215100102269.
The present study disclosed that the AN ratio measured on simple lateral skull radiographs reliably expressed the adenoidal size and patency of the nasopharyngeal airway, and correlated well with the clinical assessment score and the weight of adenoids removed at operation. The inter-observer agreement was satisfactory, and for practical purposes, a value of AN ratio greater than 0.73 may be considered indicative of pathological enlargement of the adenoids. Hopefully this study will facilitate more accurate detection of those children most likely to benefit for adenoidectomy.
本研究表明，在简单的头颅侧位X线片上测量的腺样体与鼻咽气道比值（AN比值）能够可靠地反映腺样体大小及鼻咽气道通畅情况，且与临床评估评分及手术切除的腺样体重量密切相关。观察者间一致性良好，从实际应用角度来看，AN比值大于0.73可被视为腺样体病理性增大的指征。希望本研究将有助于更准确地检测出那些最有可能从腺样体切除术中获益的儿童。
