We hypothesized that improved functional outcome after preservation rhinoplasty can be validated by radiological analyses. In this retrospective study, five patients were included. Radiological assessment was evaluated by cone-beam computed tomography. Patient satisfaction regarding nasal function was evaluated by a Likert scale from 0 to 10 (0=poor result; 10=very satisfied). After a mean follow-up of 5±1 months (range=4-6 months), significantly improved function was noted by all patients, with a mean Likert scale of 9.2±0.45 (preoperative score=2.8±0.8, p=0.0079). These results are in line with the radiological results, showing an improved internal nasal valve angle (preoperative=26.2°±1.8° vs. postoperative=32.3°±1.2°, p=0.02). Our study showed that besides nasal appearance, nasal function can also be dramatically improved after preservation rhinoplasty.