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Obstructive Sleep Apnea- Role of Magnetic Resonance Imaging as Diagnostic Tool

Rupsa Nayana*

Study objective: To evaluate diagnostic parameters in obstructive sleep apnea (OSA) using magnetic resonance imaging (MRI). Method: The study is a prospective case study carried during the period from 2015-16 in the department of Oral Medicine and Radiology and Department of Radio diagnosis, IMS SUM Hospital, Bhubaneswar, Odisha, India. 40 diagnosed cases (as diagnosed by Type IV level study) of obstructive sleep apnea who were reported to the department of Oral medicine and Radiology with their age ranging from 28 to 75 years. Two transverse plane sections one at the retropalatal (posterior to soft palate) level and the other at retroglossal level (posterior to tongue base) were obtained. 50 images taken during 50 seconds obtained at each location for the midsagittal and two transverse plane section of the pharynx and viewed on a cineloop display. Results: Among OSA patient in the study 75% of cases were having retropalatal in sagittal i.e. RP (SAG) >4.2 mm and 50% cases were having RP (SAG) >5.20 mm and 25% cases were having >6.0 mm. Similarly 75% of cases were having retroglossal sagittal i.e. RG (SAG) >6.40 mm, 50% cases having >9.0 mm and 25% cases were having >10.4 mm. Maximum cases the decrease was around 5 mm. Conclusion: Retroglossal and retropalatal obstruction is one of the important diagnostic tool in obstructive sleep apnea.