Detection of cholesteatoma: High-resolution DWI using RS-EPI and parallel imaging at 3 tesla

Algin, O., Aydın, H., Ozmen, E., Ocakoglu, G., Bercin, S., Porter, D.A. and Kutluhan, A. (2017) Detection of cholesteatoma: High-resolution DWI using RS-EPI and parallel imaging at 3 tesla. Journal of Neuroradiology, 44(6), pp. 388-394. (doi: 10.1016/j.neurad.2017.05.006) (PMID:28673676)

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Abstract

The purpose of this study is to evaluate the impact of RS-EPI-DWI in the detection of cholesteatoma and to compare with single-shot echo-planar DWI (SS-EPI-DWI). Diffusion-weighted and apparent diffusion-coefficient (ADC) images were obtained using RS-EPI and SS-EPI techniques in 30 patients. Presence of cholesteatoma (3 point scale), amount of artefacts (4 point scale), visibility (4 point scale), and ADC values of the lesions were assessed. The results of both techniques were compared with each other and gold-standard (GS) test results. Lesion visibility and presence of artefact scores of RS-EPI-DWI group were significantly different from those of the SS-EPI group. RS-EPI-DWI images had fewer artefacts and higher visibility scores. The sensitivity, specificity, negative/positive-predictive, and overall-agreement values of RS-EPI-DWI technique were 100%, 78%, 100%, 74%, and 87%; respectively. These values for SS-EPI-DWI technique were 91%, 60%, 88%, 67%, and 75%; respectively. Also, these values were higher on axial plane than coronal plane images for ADC measurements. Based on gold-standard test findings, agreement values were good (κ = 0.74) for RS-EPI-DWI and moderate for SS-EP-DWI (κ = 0.50) techniques (P < 0.001 for both). The RS-EPI-DWI technique allows a higher spatial-resolution and this technique is less susceptible to artefacts when compared with SS-EPI technique.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Porter, Professor David
Authors: Algin, O., Aydın, H., Ozmen, E., Ocakoglu, G., Bercin, S., Porter, D.A., and Kutluhan, A.
College/School:College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience
Journal Name:Journal of Neuroradiology
Publisher:Elsevier
ISSN:0150-9861
Published Online:30 June 2017

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