Volume-rendered helical computerized tomography angiography in the detection and characterization of intracranial aneurysms

Villablanca, J. Pablo; Martin, Neil A.; Jahan, Reza; Gobin, Y. Pierre; Frazee,; Duckwiler, Gary; Bentson, John R.; M, Hardart; Coiteiro, Domingos; Sayre, James W.; Viñuela, Fernando

doi:10.3171/jns.2000.93.2.0254

Cited by 96 publications

(61 citation statements)

References 27 publications

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“…9) Care should be taken not to misconstrue the rare PcoA variations, in particular the partially duplicated PcoA and fenestrated PcoA, as the largest perforating branch of the PcoA on preoperative angiograms. Other neuroimaging methods, for example, three-dimensional CT angiography, 12) may be useful to clarify the arterial structures of the PcoA and its branches.…”

Section: Discussionmentioning

confidence: 99%

Ruptured Aneurysm Associated With Partially Duplicated Posterior Communicating Artery. Case Report.

Hashimoto

Urasaki

Tsujigami

et al. 2002

Neurol. Med. Chir.(Tokyo)

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A 65-year-old woman presented with a ruptured saccular aneurysm associated with a rare variation of the posterior communicating artery (PcoA), partially duplicated PcoA. The PcoA with this variation forked just distal to the aneurysmal neck, and the two branches independently merged into the posterior cerebral artery. Initial clipping failed to isolate the aneurysm from one of the two branches, so the aneurysmal dome continued to pulsate and bleed. Temporary clipping of the proximal internal carotid artery revealed the fork of the two branches just distal to the aneurysmal neck. A curved Yasargil clip was used to clip the aneurysm and preserve the PcoA and branches. Careful observation of this PcoA variation is needed because the arterial structures may be hidden by the thickened arachnoid membrane.

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Section: Discussionmentioning

confidence: 99%

Ruptured Aneurysm Associated With Partially Duplicated Posterior Communicating Artery. Case Report.

Hashimoto

Urasaki

Tsujigami

et al. 2002

Neurol. Med. Chir.(Tokyo)

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“…Distortion of the vascular structures by surgical manipulations cannot be modeled. 3D CT angiography cannot demonstrate small arteries including most perforating arteries because of the limited spatial resolution, 2,10,25) so preservation must be confirmed microsurgically. The virtual intraoperative view does not give adequate information about the structures around the aneurysm complex, such as the anterior clinoid process, tentorial edge, and bridging veins, that may influence the clip application.…”

Section: Discussionmentioning

confidence: 99%

“…Threedimensional computed tomography (3D CT) angiography can provide virtual preoperative views to plan surgery for cerebral aneurysms. 2,10,12,22,25,28) The present study describes a cut-along-trace function using 3D CT angiography to simulate the clipping position for aneurysms with a perpendicularly applied straight clip, and prospectively evaluated the usefulness of this clipping simulation method.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Clipping Position for Cerebral Aneurysms Using Three-dimensional Computed Tomography Angiography

Futami

Nakada

Iwato

et al. 2004

Neurol. Med. Chir.(Tokyo)

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A novel method for the simulation of the clipping position for cerebral aneurysms based on threedimensional computed tomography (3D CT) angiography was evaluated. Rotating the regional 3D CT angiography images including the aneurysm provided the virtual intraoperative views of 36 cerebral aneurysms that were eligible for clipping through a pterional approach with a perpendicularly applied straight clip. The cut-along-trace function of the 3D CT workstation was used to simulate the clipping position. The presence or absence of aneurysm remnants was preoperatively evaluated by observing the clipping simulation image. Intraoperative endoscopy and postoperative cerebral angiography were routinely performed to confirm the completeness of obliterations. Nineteen of 21 aneurysms for which complete obliteration was preoperatively expected were confirmed to have no aneurysm remnant. Nine of 15 aneurysms which were expected to have aneurysm remnant were confirmed to persist. The clipping simulation images could correctly predict aneurysm remnant after the initial clipping with a sensitivity of 90.5% and specificity of 60%. The present simulation method can predict aneurysm remnants and improve the likelihood of complete obliteration by clipping.

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“…Contrary, CT angiography has some limitations. Differentiation of small aneurysms from neighboring bones is not possible each time and CT angiography is not capable of showing the collateral circulation as seen in DSA [5]. Both arteries and veins are visible in CT angiography and sometimes it is not easy to differentiate either of them.…”

Section: Diagnostic Imagingmentioning

confidence: 99%

Endovascular Treatment of Internal Carotid and Vertebral Artery Aneurysms Using Covered Stents

Vulev¹,

Klepanec²

2012

Aneurysm

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Volume-rendered helical computerized tomography angiography in the detection and characterization of intracranial aneurysms

Abstract: Computerized tomography angiography is equal to DS angiography in the detection and superior to DS angiography and MR angiography in the characterization of brain aneurysms. Information contained in volume-rendered CT angiography images had a significant impact on case management.

Cited by 96 publications

References 27 publications

Ruptured Aneurysm Associated With Partially Duplicated Posterior Communicating Artery. Case Report.

Ruptured Aneurysm Associated With Partially Duplicated Posterior Communicating Artery. Case Report.

Simulation of Clipping Position for Cerebral Aneurysms Using Three-dimensional Computed Tomography Angiography

Endovascular Treatment of Internal Carotid and Vertebral Artery Aneurysms Using Covered Stents

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