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Role of magnetic resonance imaging in evaluating sphenoid sinus and internal carotid artery

Published online by Cambridge University Press:  24 September 2009

H G Hatipoglu ,
M A Cetin ,
A Selvi  and
E Yuksel
H G Hatipoglu*
Affiliation:
Department of Radiology, Ankara Numune Education and Research Hospital, Turkey
M A Cetin
Affiliation:
Department of Otorhinolaryngology, Head and Neck Surgery, Ankara Numune Education and Research Hospital, Turkey
A Selvi
Affiliation:
Department of Radiology, Ankara Numune Education and Research Hospital, Turkey
E Yuksel
Affiliation:
Department of Radiology, Ankara Numune Education and Research Hospital, Turkey
*
Address for correspondence: Dr Hatice Gul Hatipoglu, Maresal Fevzi Cakmak cad 64/A, Besevler 06500, Ankara, Turkey. Fax: 03122128410 E-mail: [email protected]
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Abstract

Objective:

This study aimed to determine whether magnetic resonance imaging has a role in the evaluation of the sphenoid sinus and internal carotid artery. In addition, we aimed to establish reference measurements for the minimal distance between the internal carotid arteries.

Method:

The sphenoid sinuses and neighbouring internal carotid arteries of 90 patients were evaluated using sagittal T1-weighted and axial and coronal T2-weighted magnetic resonance images.

Results:

Sphenoid sinus pneumatisation was categorised as occipitosphenoidal (0 per cent), conchal (3.3 per cent), presellar (14.4 per cent) or sellar (82.2 per cent). The internal carotid artery protruded into the sphenoid sinus in 32.8 per cent, with a septum in 9.4 per cent. The incidence of sellar-type sphenoid sinus pneumatisation was higher in patients with protrusion of the internal carotid artery into the sphenoid sinus (p < 0.001). The incidence of presellar pneumatisation was higher in patients without internal carotid artery protrusion (p < 0.001). The minimal distance between the internal carotid arteries varied between 9.04 and 24.26 mm (mean, 15.94 mm).

Conclusion:

Magnetic resonance imaging can provide useful information about the sphenoid sinus and internal carotid artery, prior to endoscopic sphenoidotomy and trans-sphenoidal hypophysectomy.

Keywords

Sphenoid SinusMagnetic Resonance-ImagingInternal Carotid ArteryAnatomy
Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 123 , Issue 12 , December 2009 , pp. 1331 - 1337
Copyright
Copyright © JLO (1984) Limited 2009

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