Journal of Clinical and Diagnostic Research, ISSN - 0973 - 709X

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Original article / research
Year : 2018 | Month : April | Volume : 12 | Issue : 4 | Page : TC01 - TC03

Mastoid Air Cell System: Hounsfield Density by Multislice Computed Tomography

Luciana Munhoz, Christyan Hiroshi Iida, Reinaldo Abdala Júnior, Ronaldo Abdala, Emiko Saito Arita

1. Postgraduate Student, Department of Stomatology, São Paulo University, Dentistry School, São Paulo, Brazil. 2. Undergraduate Student, Department of Stomatology, São Paulo University, Dentistry School, São Paulo, Brazil. 3. PhD Student, Department of Stomatology, São Paulo University, Dentistry School, São Paulo, Brazil. 4. Radiologist, Department of Medical Radiology, Santa Casa de Misericórdia de Avaré, Avaré, São Paulo, Brazil. 5. Associate Professor, Department of Stomatology, São Paulo University, Dentistry School, São Paulo, Brazil.

Correspondence Address :
Dr. Luciana Munhoz,
2227 Lineu Prestes Avenue, São Paulo-05508-000, Brazil.
E-mail: dra.lucimunhoz@usp.br

Abstract

Introduction: Multislice Computed Tomography (MCT) is the main radiographic examination to evaluate mastoid air cell system. Hounsfield Unit density (HU), determined by MCT is useful to evaluate mastoid pneumatization, but HU values in different genders, right/left mastoid sides, as well as their association with age have not been studied yet.

Aim: To evaluate the difference in Hounsfield density values between genders as well as between right and left sides, and also to correlate HU with age.

Materials and Methods: A total of 102 skull MCT examinations that included mastoid process of temporal bone were evaluated (47 from male and 55 from female patients). The HU was measured at mastoid cavity applying exclusively axial slices in a standardized region of interest. All statistical analyses were performed at a level of significance of 5%, using IBM SPSS Statistics 17, SPSS®, Inc, Chicago, IL. Linear regression was used to determine the relationship between age and HU; Non-parametric tests were performed to evaluate differences between right and left sides, as well as between genders.

Results: No statistical significant differences was observed between left and right sides HU values (p-value=0.676) nor between male and female (p-value=0.155), according to Mann-Whitney test. Age was not correlated with HU values (p-value=0.06).

Conclusion: Within the limitations of the present investigation, we concluded that the Mastoid Air Cells System (MACS) HU values do not vary among male and female individuals and left-right sides. Age is advocated to be associated with the volume of mastoid pneumatization, but it may not be related to differences in HU values.

Keywords

Cone-beam computed tomography, Inner ear, Mastoid bone, Mastoid process, Temporal bone

How to cite this article :

Luciana Munhoz, Christyan Hiroshi Iida, Reinaldo Abdala Júnior, Ronaldo Abdala, Emiko Saito Arita. MASTOID AIR CELL SYSTEM: HOUNSFIELD DENSITY BY MULTISLICE COMPUTED TOMOGRAPHY. Journal of Clinical and Diagnostic Research [serial online] 2018 April [cited: 2018 Apr 23 ]; 12:TC01-TC03. Available from
http://www.jcdr.net/back_issues.asp?issn=0973-709x&year=2018&month=April&volume=12&issue=4&page=TC01-TC03&id=11366

DOI and Others

DOI: 10.7860/JCDR/2018/34463.11366

Date of Submission: Oct 20, 2017
Date of Peer Review: Jan 19, 2018
Date of Acceptance: Feb 12, 2018
Date of Publishing: Apr 01, 2018

FINANCIAL OR OTHER COMPETING INTERESTS: As declared above.

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