目的通过MSCT对下鼻甲外移鼻 腔拓宽术疗效的评价，从鼻腔结构、鼻客 观功能等方面，对下鼻甲外移鼻腔拓宽手 术的可行性和优越性进行评估，为临床治 疗提供依据、评价手术疗效。方法 选择 50例单纯鼻塞患者作为研究对象，所有患 者手术前MSCT扫描均表现为不同程度下鼻 甲肥大鼻腔狭窄，在术前术后分别对患者 行CT定位测量及鼻阻力计测量。结果 与 手术前相比，手术后IER、EER、MDTB、 MDTT、NLDT、右侧ITT、左侧ITT有显著性 差异（t=-17.831、-22.982、-8.321、 8.703、6.710、12.126、14.492，P﹤ 0.05）；鼻呼气相总阻力与MDTT、MDTB 均呈现负相关关系(r=-0.570、-0.551， P﹤0.05)；鼻吸气相总阻力与MDTT、MDTB 均呈现负相关关系(r值分别为-0.570、- 0.551，P﹤0.05)。结论 多层螺旋CT测量 是客观的证明鼻腔拓宽术术后存在鼻腔结 构改变的方法，鼻阻力测量则是可靠地评 价鼻腔通气的客观方法，能够作为评价手 术疗效和鼻通气功能改善的有效依据。

Objective By MSCT of inferior turbinate shift nasal broaden the clinical curative effect evaluation, from the structure of nasal cavity and nasal objective function and the inferior turbinate shift nasal broaden the operation feasibility and superiority assessment, provide basis, to evaluate the effect of operation for clinical treatment. Methods 50 cases with nasal obstruction patients as the research object, all patients before MSCT scan showed different degrees of inferior turbinate hypertrophy of nasal stenosis in preoperative and postoperative patients underwent the CT measurement and nasal resistance meter measurement. Results Compared with before surgery, IER, EER, MDTB, MDTT, NLDT, right ITT, left ITT were significantly different (t=-17.831, -22.982, -8.321, 8.703, 6.710, 12.126, 14.492, P<0.05). The total resistance and MDTT, MDTB were negatively correlated (-0.570 -0.551, P<0.05). The total resistance and MDTT, MDTB were negatively correlated (R values were -0.570, P, -0.551<0.05). Conclusion Multi slice spiral CT measurement is an objective method to prove the nasal cavity structure change after nasal cavity widening, and the nasal resistance measurement is an objective method to evaluate the nasal airway pressure.