[CT imaging of the anterior ethmoidal artery: anatomic correlation].
OBJECTIVE
To identify the anterior ethmoidal artery (AEA) of a skull specimen on CT prior to transnasal endoscopic surgical management of anterior epistaxis.


METHODS
From a medial canthotomy approach, the AEA was located and a marker placed on 9 skull specimens (18 AEA). CT with 2D reformations was then performed. The AEA were then dissected using an endoscopic anterior ethmoidectomy approach. The presence of AEA procidence was recorded.


RESULTS
Correlation between CT and surgical findings allowed identification of 2 criteria predictive of AEA procidence: 1) presence of an ethmoid bulla above the AEA canal 2) AEA canal located below (not within) the ethmoid roof, anterior to the bulla.


CONCLUSIONS
High resolution CT depiction of the AEA provides information regarding its accessibility for endoscopic ligation in patients with severe anterior epistaxis as an alternative to external ligation while demonstrating the upper limit of the anterior ethmoid.
Riehm
S
S
Service de Radiologie I, CHRU, Hôpital de Hautepierre, 67098 Strasbourg Cedex. sophie.riehm@chru-strasbourg.fr
Pénisson
L
L
Charpiot
A
A
Schultz
P
P
Veillon
F
F
Debry
C
C
D000792:Angiography / Q000379:methods; D001158:Arteries / Q000033:anatomy & histology; D002102:Cadaver; D004210:Dissection / Q000379:methods; D004724:Endoscopy / Q000379:methods; D005004:Ethmoid Bone / Q000098:blood supply* / Q000000981:diagnostic imaging; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*