The usefulness of MRI in olfactory bulb volumetric studies in chronic nasal obstruction
Keywords:
Olfactory bulb, MRI, chronic nasal obstructionAbstract
Background: A lack of smell (anosmia) is one of the most prevalent symptoms of persistent nasal obstruction. The olfactory bulb (OB) is a pliable structure with many active afferent neurons, and its size is regulated by the stimulus. Patients with persistent nasal blockage for more than 6 months without prior intervention were included in this research. Volumetric analysis of their olfactory bulb was done using magnetic resonance imaging (MRI), and three-dimensional imaging. The volume was calculated for them and compared with the control group that had no nasal problems.The study group's age ranged from 18 to 66 years, with a mean of 38.6 and an SD of 13.3.It was discovered that the mean olfactory bulb volume was significantly lower in patients than controls (23.48 vs 44.48 mm3, P=0.001), and that the mean olfactory bulb volume was significantly lower in patients aged 40 years or older than those without polyposis (P=0.019).There is a slight negative connection between symptom duration and olfactory bulb volume (r= - 0.28, P= 0.03). Also, there is a modest negative connection between symptom severity score and olfactory bulb volume (r=-0.328, P=0.01).
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