scholarly journals Comparison of computerized tomography angiography and digital subtraction angiography in aneurysmal subarachnoid hemorrhage

2021 ◽  
Vol 5 (3) ◽  
pp. 280-283
Author(s):  
Şeyho Cem YÜCETAŞ ◽  
Hakan KAYA ◽  
Safiye KAFADAR ◽  
Süleyman KILINÇ ◽  
İrem KARATAŞ ◽  
...  
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Digital Subtraction Angiography ◽  
Computerized Tomography ◽  
Aneurysmal Subarachnoid Hemorrhage ◽  
Digital Subtraction ◽  
Computerized Tomography Angiography

The Supraclavicular Artery Perforator Flap: A Comparative Study of Imaging Techniques Used in Preoperative Mapping

2018 ◽  
Vol 34 (07) ◽  
pp. 499-508 ◽  
Author(s):  
Kawa Mahmood ◽  
Nzar Hamawandi ◽  
Aram Mirza ◽  
Jawad Hawas ◽  
Esther Moreno ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Indocyanine Green ◽  
Digital Subtraction Angiography ◽  
Computerized Tomography ◽  
Indocyanine Green Angiography ◽  
Imaging Techniques ◽  
Digital Subtraction ◽  
Computerized Tomography Angiography ◽  
Preoperative Mapping

Background The supraclavicular artery flap is an excellent flap for head and neck reconstruction. The aim of this study is to assess imaging techniques to define the precise vascular boundaries of this flap. Methods Six imaging techniques were used for supraclavicular artery mapping in 65 cases; handheld Doppler, triplex ultrasound, computed tomography angiography, magnetic resonance angiography, digital subtraction angiography, and indocyanine green angiography. We checked the site of the perforators, the course of a supraclavicular artery, and anatomical mapping of the supraclavicular artery. Results Handheld Doppler identified perforators' sites in 80% of the cases but showed no results for the course of the vessel. Triplex ultrasound identified the site of perforators in 52.9%, and partial mapping of the course of a supraclavicular artery in 64.7% of the cases. Computerized tomography angiography showed the site of perforators in 60%, and the course of supraclavicular artery completely in 45%, and partially in an additional 30%of the cases examined. Magnetic resonance angiography showed negative results for all parameters. Digital subtraction angiography showed the partial course of a supraclavicular artery in 62.5%, but showed no perforators. Indocyanine green angiography showed the site of perforators in 60% and a partial course of supraclavicular artery distal to perforators in 60%.Anatomical mapping of the vessel was possible with computerized tomography angiogram completely in 45%, and partially in 30%, and was also possible with indocyanine green angiography partially in 60%. Conclusion Computerized tomography angiography showed best results in the mapping of the supraclavicular artery, but with an inability to define the perforator perfusion territories, and also with risks of irradiation, while indocyanine green angiography is a good alternative as it could precisely map the superficial course of the artery and angiosomes, with no radiation exposure.

scholarly journals Delayed Cerebral Ischemia and Spreading Depolarization in Absence of Angiographic Vasospasm after Subarachnoid Hemorrhage

2011 ◽  
Vol 32 (2) ◽  
pp. 203-212 ◽  
Author(s):  
Johannes Woitzik ◽  
Jens P Dreier ◽  
Nils Hecht ◽  
Ingo Fiss ◽  
Nora Sandow ◽  
...  
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Cerebral Ischemia ◽  
Digital Subtraction Angiography ◽  
Aneurysmal Subarachnoid Hemorrhage ◽  
Delayed Cerebral Ischemia ◽  
Prolonged Release ◽  
Digital Subtraction ◽  
Angiographic Vasospasm ◽  
Electrode Strip ◽  
Subdural Electrode

It has been hypothesized that vasospasm is the prime mechanism of delayed cerebral ischemia (DCI) after aneurysmal subarachnoid hemorrhage (aSAH). Recently, it was found that clusters of spreading depolarizations (SDs) are associated with DCI. Surgical placement of nicardipine prolonged-release implants (NPRIs) was shown to strongly attenuate vasospasm. In the present study, we tested whether SDs and DCI are abolished when vasospasm is reduced or abolished by NPRIs. After aneurysm clipping, 10 NPRIs were placed next to the proximal intracranial vessels. The SDs were recorded using a subdural electrode strip. Proximal vasospasm was assessed by digital subtraction angiography (DSA). 534 SDs were recorded in 10 of 13 patients (77%). Digital subtraction angiography revealed no vasospasm in 8 of 13 patients (62%) and only mild or moderate vasospasm in the remaining. Five patients developed DCI associated with clusters of SD despite the absence of angiographic vasospasm in three of those patients. The number of SDs correlated significantly with the development of DCI. This may explain why reduction of angiographic vasospasm alone has not been sufficient to improve outcome in some clinical studies.

scholarly journals Cerebral Arterial Fenestrations

2014 ◽  
Vol 20 (3) ◽  
pp. 261-274 ◽  
Author(s):  
Daniel L. Cooke ◽  
Charles E. Stout ◽  
Warren T. Kim ◽  
Akash P. Kansagra ◽  
John Paul Yu ◽  
...  
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Digital Subtraction Angiography ◽  
Basilar Artery ◽  
Aneurysmal Subarachnoid Hemorrhage ◽  
Database Search ◽  
Posterior Circulation ◽  
Digital Subtraction ◽  
Anterior Circulation ◽  
Anatomic Variant ◽  
Medline Database

Arterial fenestrations are an anatomic variant with indeterminate significance. Given the controversy surrounding fenestrations we sought their prevalence within our practice along with their association with other cerebrovascular anomalies. We retrospectively reviewed 10,927 patients undergoing digital subtraction angiography between 1992 and 2011. Dictated reports were searched for the terms “fenestration” or “fenestrated” with images reviewed for relevance, yielding 228 unique cases. A Medline database search from February 1964 to January 2013 generated 304 citations, 127 cases of which were selected for analysis. Cerebral arterial fenestrations were identified in 228 patients (2.1%). At least one aneurysm was noted in 60.5% of patients, with an aneurysm arising from the fenestration in 19.6% of patients. Aneurysmal subarachnoid hemorrhage or non-aneurysmal subarachnoid hemorrhage were present in 60.1% and 15.8%, respectively. For the subset of patients with an aneurysm arising directly from a fenestration relative to those patients with an aneurysm not immediately associated with a fenestration, the prevalence of aneurysmal subarachnoid hemorrhage was 66.7% vs. 58.6% (p = 0.58). Fenestrations were more often within the posterior circulation (73.2%) than the anterior circulation (24.6%), though there was no difference in the prevalence of aneurysms within these groups (61.1% vs. 60.7%, p = 1.0). Cerebral arterial fenestrations are an anatomic variant more often manifesting at the anterior communicating arterial complex and basilar artery and with no definite pathological relationship with aneurysms.

Surgical anatomy of the cerebral arteries in patients with subarachnoid hemorrhage: comparison of computerized tomography angiography and digital subtraction angiography

2001 ◽  
Vol 95 (2) ◽  
pp. 206-212 ◽  
Author(s):  
Birgitta K. Velthuis ◽  
Maarten S. van Leeuwen ◽  
Theodoor D. Witkamp ◽  
Lino M. P. Ramos ◽  
Jan Willem Berkelbach van der Sprenkel ◽  
...  
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Ct Angiography ◽  
Computerized Tomography ◽  
Cerebral Arteries ◽  
Digital Subtraction ◽  
Aneurysm Surgery ◽  
Content Type ◽  
Computerized Tomography Angiography ◽  
Vertebrobasilar Artery ◽  
Fine Print

Object. The purpose of this study was to compare computerized tomography (CT) angiography and digital subtraction (DS) angiography studies in patients with subarachnoid hemorrhage (SAH) to assess their vascular anatomy relevant to cerebral aneurysm surgery. Methods. From a prospective series of 100 patients with SAH, the authors selected 73 patients whose CT angiography studies were of adequate quality and in whom DS angiography of both carotid arteries had been performed. Eleven patients with no DS angiographic studies of the vertebrobasilar artery were only evaluated for the anterior half of the circle of Willis. Anterior communicating arteries (ACoAs), both precommunicating anterior cerebral arteries (A1 segments), both posterior communicating arteries (PCoAs), and both precommunicating posterior cerebral arteries (P1 segments) were assessed on CT angiography and DS angiography by two independent observers. Conclusions. Computerized tomography angiography compares well with DS angiography for visualizing normal-sized arteries, and is superior for visualizing ACoAs and hypoplastic A1 and P1 segments. Important preoperative aspects such as dominant A1 segments and PCoAs are equally well seen using either modality. Neither method enabled the authors to visualize more than 50% of PCoAs. Use of CT angiography can provide the required preoperative anatomical information for aneurysm surgery in most patients with SAH.

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