The University of Southampton
University of Southampton Institutional Repository

Visualization of anterior skull base defects with intraoperative cone-beam CT

Visualization of anterior skull base defects with intraoperative cone-beam CT
Visualization of anterior skull base defects with intraoperative cone-beam CT
Background: the role of cone-beam CT (CBCT) in demonstrating anterior skull base defects (ASBDs), differing in size and location, was investigated. The study was designed to describe the potential advantage of CBCT in the setting of an intraoperative cerebrospinal fluid (CSF) leak.

Methods: in all, 120 ASBD were evaluated in 5 cadaver heads. Orthogonal and oblique slices were reconstructed. Observer studies assessed the visibility of ASBD in each location as a function of defect size.

Results: for 1-, 2-, and 4-mm defects, the percentage that were undetectable ranged from 20% to 33%, 0% to 14%, and 0% to 5%, respectively. Confident breach detection increased with defect size and was most challenging in the lateral lamella and cribriform. CBCT permitted confident detection of ASBD as small as about 2 mm in the fovea ethmoidalis and planum. Oblique views were found to be superior to orthogonal planes.

Conclusions: the ability to identify ASBD depended on the size and location of defect. Oblique viewing planes were optimal for ASBD visualization
1043-3074
504-512
Bachar, Gideon
1bea813f-4e38-45c4-85a0-25561f47d4b3
Barker, Emma
d85e0e8f-7295-4912-9052-646a790d99db
Chan, Harley
85444e7c-c70b-48a2-b289-f733cf79c162
Daly, Michael J.
14a498e2-dda7-4c28-88ed-3cb9dbac9936
Nithiananthan, Sajendra
13452561-4932-4857-9c37-df8de3b8f69a
Vescan, Al
a2fc8d55-b9a0-4259-8b23-877a5c3cdc97
Irish, Jonathan C.
7350af02-856b-41fe-a3ba-aff389fd63dd
Siewerdsen, Jeffrey H.
bb611b53-aa88-4af9-92e8-813fe6c2221e
Bachar, Gideon
1bea813f-4e38-45c4-85a0-25561f47d4b3
Barker, Emma
d85e0e8f-7295-4912-9052-646a790d99db
Chan, Harley
85444e7c-c70b-48a2-b289-f733cf79c162
Daly, Michael J.
14a498e2-dda7-4c28-88ed-3cb9dbac9936
Nithiananthan, Sajendra
13452561-4932-4857-9c37-df8de3b8f69a
Vescan, Al
a2fc8d55-b9a0-4259-8b23-877a5c3cdc97
Irish, Jonathan C.
7350af02-856b-41fe-a3ba-aff389fd63dd
Siewerdsen, Jeffrey H.
bb611b53-aa88-4af9-92e8-813fe6c2221e

Bachar, Gideon, Barker, Emma, Chan, Harley, Daly, Michael J., Nithiananthan, Sajendra, Vescan, Al, Irish, Jonathan C. and Siewerdsen, Jeffrey H. (2010) Visualization of anterior skull base defects with intraoperative cone-beam CT. Head & Neck, 32 (4), 504-512. (doi:10.1002/hed.21219). (PMID:19693942)

Record type: Article

Abstract

Background: the role of cone-beam CT (CBCT) in demonstrating anterior skull base defects (ASBDs), differing in size and location, was investigated. The study was designed to describe the potential advantage of CBCT in the setting of an intraoperative cerebrospinal fluid (CSF) leak.

Methods: in all, 120 ASBD were evaluated in 5 cadaver heads. Orthogonal and oblique slices were reconstructed. Observer studies assessed the visibility of ASBD in each location as a function of defect size.

Results: for 1-, 2-, and 4-mm defects, the percentage that were undetectable ranged from 20% to 33%, 0% to 14%, and 0% to 5%, respectively. Confident breach detection increased with defect size and was most challenging in the lateral lamella and cribriform. CBCT permitted confident detection of ASBD as small as about 2 mm in the fovea ethmoidalis and planum. Oblique views were found to be superior to orthogonal planes.

Conclusions: the ability to identify ASBD depended on the size and location of defect. Oblique viewing planes were optimal for ASBD visualization

This record has no associated files available for download.

More information

Published date: April 2010

Identifiers

Local EPrints ID: 180057
URI: http://eprints.soton.ac.uk/id/eprint/180057
ISSN: 1043-3074
PURE UUID: 816d7d74-dee0-4988-ba63-88189f1cc5fb

Catalogue record

Date deposited: 06 Apr 2011 13:22
Last modified: 14 Mar 2024 02:51

Export record

Altmetrics

Contributors

Author: Gideon Bachar
Author: Emma Barker
Author: Harley Chan
Author: Michael J. Daly
Author: Sajendra Nithiananthan
Author: Al Vescan
Author: Jonathan C. Irish
Author: Jeffrey H. Siewerdsen

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×