Differentiation Between Paraclinoid and Cavernous Sinus Aneurysms with Contrast-Enhanced 3D Constructive Interference in Steady- State MR Imaging

Abstract

BACKGROUND AND PURPOSE:Differentiation between paraclinoid and cavernous sinus aneurysms of the internal carotid artery (ICA) is critical when considering treatment options. The purpose of this study was to determine whether contrast-enhanced (CE) 3D constructive interference in steady state (CISS) MR imaging is useful to differentiate between paraclinoid and cavernous sinus aneurysms.

Infraoptic Course of the Anterior Cerebral Artery Originating From the Extradural Internal Carotid Artery Associated With Contralateral Internal Carotid Artery Agenesis and Multiple Intracerebral Aneurysms -Case Report-

“…5) In the present case, the dural attachment to the infraoptic course of ACA was demonstrated clearly by the 3D-CISS image ( Fig. 2A) and corresponding reformatted MR angiography source images (Fig.…”

Comparison of the effectiveness of using the optic strut and tuberculum sellae as radiological landmarks in diagnosing paraclinoid aneurysms with CT angiography

“…Recent techniques have been developed for the direct delineation of the DDR by high-resolution or contrast-enhanced 3D constructive interference MRI. 5,23 However, these studies either lacked direct surgical confirmation or comprised a small number of cases without analyzing diagnostic accuracy and effectiveness. In addition, MRI is more time consuming compared with CTA in emergent circumstances.…”

“…2,9,19,24 Some studies tried to delineate the DDR with imaging methods and differentiate the aneurysm in the vicinity of the anterior clinoid process (ACP). 5,16,23 However, these studies either lacked direct surgical confirmation or comprised a small case number.aBBreViatiONS ACP = anterior clinoid process; C 4 = cavernous segment; C 5 = clinoid segment; C 6 = ophthalmic segment; CTA = CT angiography; DDR = distal dural ring; DSA = digital subtraction angiography; ICA = internal carotid artery; OphA = ophthalmic artery; OS = optic strut; PDR = proximal dural ring; ROC = receiver operating characteristic; TS = tuberculum sellae. OBJectiVe The treatment of paraclinoid aneurysms remains challenging.…”

“…2,9,19,24 Some studies tried to delineate the DDR with imaging methods and differentiate the aneurysm in the vicinity of the anterior clinoid process (ACP). 5,16,23 However, these studies either lacked direct surgical confirmation or comprised a small case number.…”

Identification of the Distal Dural Ring with Use of Fusion Images with 3D-MR Cisternography and MR Angiography: Application to Paraclinoid Aneurysms

“…They used coronal and oblique sagittal planes of T2-weighted images to assess whether paraclinoid aneurysms were located in the intradural or extradural space. 12 Hirai et al 17 identified a boundary between the CSF and the roof of the cavernous sinus by using contrastenhanced 3D-CISS (CE-3D-CISS) imaging and considered it as the proximal ring. The cavernous sinus was enhanced by contrast medium on CE-3D-CISS images, which allowed differentiation of the ICA in the cavernous sinus, and 9 of 11 paraclinoid aneurysms were accurately diagnosed on the basis of their surgical findings.…”