Background: Our study aimed to measure the tongue volume (TV), oral cavity volume (OCV), and their ratio (TV/OCV) and correlate with upper airway using cone-beam computed tomography (CBCT). Method: The volume of oral cavity, tongue and upper airway were obtained by the manual process of segmentation of CBCT data of 15 subjects. The mean age of the sample was 21.86 years (range 15-33 years). Segmentation of the upper airway, tongue and oral cavity was performed manually using Mimics 11.0 (Materialise, Leuven, Belgium) software at different thresholds for air and the tongue. The Hounsfield units (HU) for airway volume of the different facial region ranged from −1024 to −500. For tongue volume, Hounsfield units (HU), ranging from −200 to 200 was calculated. Results: A significant negative correlation between TV/OCV and oropharynx (r = − 0.51; P = 0.04), TV/OCV and oral cavity airway volume (r = − 0.74; P = 0.002) was found. There was a significant and a positive correlation with TV/OCV and tongue volume (r = 0.65; P = 0.009). Conclusion: A significant negative correlation established between TV/OCV, oropharynx and oral cavity airway volume. This finding indicates an influence tongue volume, oral cavity volume and their ratio on patency of the oropharynx.

The overall F-score was found to be greater than 80% for all the airway subregions using five segmentation techniques, indicating accurate contour initialization. Robustness of the algorithm needs to be further tested on severely deformed cases and on cases with different races and ethnicity for it to have global acceptance in Katradental radKatraiology workflow.

No abstract

No abstract

No abstract

Few years back mobile wallet was something majority in India did not hear about but its use saw a huge leap in last couple of years with the surge of smart phones, high speed internet connectivity using 3G and 4G and the lucrative offers mobile wallets provide. This research paper is an attempt to study the preference towards mobile wallet among the students studying in various universities in Lucknow city.

No abstract

We read with great interest, the recent article published by Rosario HD describing the efficiency of bimaxillary advancement surgery in increasing the volume of the upper airways: a systematic review of observational studies and meta-analysis [1]. We congratulate the authors for conducting a systematic review and meta-analysis of such a meaningful and much warranted topic using cone beam computed tomography. In this study, authors located 1860 relevant studies on the subject. They found only six studies suitable according to PRISMA guidelines for quantitative meta-analysis. It is pertinent to mention here that upper airway and its definition include both pharynx and the nasal cavity [2]. The short listed and included studies in this review provided data on pharyngeal volume only, and none of the studies included nasal cavity volume, an integral part of upper airway. It is well known that high nasal resistance is one of the major contributing factors of obstructive sleep apnoea (OSA), and it comprises nearly two-thirds of the airway resistance during normal breathing [3]. Therefore, the interpretation of data on pharyngeal volume alone is likely to provide imprecise information on this aspect of the study.