16,233 results match your criteria Brain Aneurysm Imaging


Asymptomatic complete distal abdominal aortic occlusion with initial presentation of ruptured intracranial aneurysm.

Radiol Case Rep 2021 Aug 8;16(8):1993-1998. Epub 2021 Jun 8.

Radiology Department, UCSI Hospital, Negeri Sembilan, Malaysia.

Aortoilliac occlusive disease is occlusive atherosclerosis disease involving the distal aorta and bifurcation of iliac arteries and it is a subtype of peripheral arterial disease. Total occlusion of the abdominal aorta is a rare occurrence with an incidence of 3% -8.5% among the aortoiliac occlusive disease patients. Read More

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[Surgical treatment of vertebral artery confluence aneurysms].

Zh Vopr Neirokhir Im N N Burdenko 2021 ;85(3):45-52

Burdenko National Medical Research Center of Neurosurgery, Moscow, Russia.

Background: Aneurysms of vertebral artery confluence and proximal parts of basilar artery are extremely rare. They are usually combined with proximal fenestration of basilar artery. No timely surgical treatment of these aneurysms is associated with high risk of adverse outcomes, and their treatment is a challenge for neurosurgeons. Read More

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The Evolution and Future of Spinal Drain for Thoracic Aortic Aneurysm Repair: A Review.

J Cardiothorac Vasc Anesth 2021 May 16. Epub 2021 May 16.

Department of Anesthesiology, Loyola University Medical Center, Maywood, IL.

For decades, spinal drains for cerebrospinal fluid (CSF) pressure monitoring and drainage have been used as adjuncts to protect against spinal cord injury resulting from thoracic aortic aneurysm repair. There are many different approaches to placement and management of CSF drains, with no true consensus on best practice. Furthermore, the incidence of complications resulting from spinal drains largely has been stagnant. Read More

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[Imaging Parameter Optimization of 3D Radial Stack-of-stars MRA with FID Sampling after Treatment of Cerebral Aneurysms with Metallic Devices].

Nihon Hoshasen Gijutsu Gakkai Zasshi 2021 ;77(6):572-580

Department of Radiology, Eastern Chiba Medical Center.

Magnetic resonance angiography (MRA) using ultra-short TE (uTE) is known to be used for the evaluation of cerebral aneurysm after treatment such as clipping and coiling. However, conventional uTE sequences are not appropriate as an additional imaging sequence for 3D time-of-flight (TOF)-MRA because it is not possible to shorten scan time and acquire selective-volume imaging. To solve the problem, we focused on the combination of uTE sampling and 3D radial scan sequences. Read More

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Characteristics and Forensic Identification of Blunt Vertebral Artery Injury.

Fa Yi Xue Za Zhi 2021 Apr;37(2):233-238

West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu 610041, China.

Abstract: Blunt vertebral artery injury occurs frequently in forensic practice. However, injuries of the vertebral artery are easily ignored or overlooked because of its relatively deep location. Through literatures review, this paper finds that the manners of blunt vertebral artery injury are varied and one or more injury mechanisms may be involved simultaneously. Read More

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Endovascular Treatment of Intracranial Aneurysms Using the Novel Low Profile Visualized Intraluminal Support EVO Stent: Multicenter Early Feasibility Experience.

Neurointervention 2021 Jun 18. Epub 2021 Jun 18.

Interventional Neuroradiology Service, Department of Radiology, Austin Health, Heidelberg, VIC, Australia.

Purpose: Low-profile, self-expandable stents have broadened therapeutic options available for definitive treatment of intracranial aneurysms. The novel Low-Profile Visualized Intraluminal Support (LVIS) EVO stent extends upon the success of its predecessor, the LVIS Jr stent, aiming to enable higher visibility and greater opening ability within a self-expandable and fully retrievable microstent system. In this study, we aim to report the early safety and feasibility experience with the LVIS EVO stent. Read More

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Analysis of risk factors for anterior communicating artery aneurysm rupture: a single-center study.

World Neurosurg 2021 Jun 13. Epub 2021 Jun 13.

Department of Interventional Radiology & Vascular Surgery, Zhongda Hospital, Medical School, Southeast University, Nanjing 210000, China.

Background And Purpose: Congenital hypoplasia/aplasia of the A1 segment of the anterior cerebral artery is associated with an increased incidence of berry aneurysms at the anterior communicating artery (ACoA) complex. We analysed the factors contributing to ACoA aneurysm rupture.background MATERIALS AND METHODS: We retrospectively analysed the data of patients with ACoA aneurysms who underwent cerebral angiography between July 2008 and January 2020. Read More

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Sphenoid sinus pseudoaneurysm with carotid cavernous fistula presenting with delayed subarachnoid hemorrhage: A case report.

Medicine (Baltimore) 2021 Jun;100(24):e26383

Department of Radiology.

Rationale: Sphenoid sinus pseudoaneurysm arising from the cavernous segment of the internal carotid artery (ICA) caused by traumatic vessel injury is rare, and rarer is a concomitant carotid-cavernous fistula (CCF). In particular, delayed subarachnoid hemorrhage (SAH) due to pseudoaneurysm rupture has not been reported to-date in literature. Here, we report a case of sphenoid sinus pseudoaneurysm with CCF presenting with delayed SAH. Read More

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Optical Coherence Tomography for Neurovascular Disorders.

Neuroscience 2021 Jun 12. Epub 2021 Jun 12.

University of Massachusetts Medical School, Radiology, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655, United States. Electronic address:

Diagnosis of cerebrovascular disease includes vascular neuroimaging techniques such as coherence tomography (CT) angiography, MR angiography (with or without use of contrast agents) and catheter digital subtraction angiography. These techniques provide mostly information about the vessel lumen. Vessel wall imaging with MR seeks to characterize cerebrovascular pathology, but with resolution that is often insufficient for small lesions. Read More

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CT angiography evaluation of intracranial aneurysms: Distribution, characteristics, and association with subarachnoid hemorrhage.

Authors:
E Caliskan D Oncel

Niger J Clin Pract 2021 Jun;24(6):833-840

Department of Radiology, Tepecik Training and Research Hospital, Izmir, Turkey.

Aims: To investigate the distribution, characteristics, and association with subarachnoid hemorrhage (SAH) of aneurysms identified in Turkish adult patients with computed tomography angiography (CTA) performed with suspicion of intracranial aneurysms and/or SAH.

Subjects And Methods: A total of 356 patients (164 male, and 192 female) with a mean age of 55.6 ± 4. Read More

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Identification of high risk clinical and imaging features for intracranial artery dissection using high-resolution cardiovascular magnetic resonance.

J Cardiovasc Magn Reson 2021 Jun 14;23(1):74. Epub 2021 Jun 14.

Department of Radiology, Changhai Hospital, Naval Medical University, 10 Building, 168 Changhai Road, Yangpu, Shanghai, 200433, China.

Background: Intracranial artery dissection (IAD) often causes headache and cerebral vascular ischemic events. The imaging characteristics of IAD remain unclear. This study aims to characterize the appearance of culprit and non-culprit IAD using high-resolution cardiovascular magnetic resonance imaging (hrCMR) and quantify the incremental value of hrCMR in identifying higher risk lesions. Read More

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CT cisternography to visualize epidermoid tumors for stereotactic radiosurgery treatment planning.

J Clin Neurosci 2021 Jul 7;89:91-96. Epub 2021 May 7.

Department of Neurosurgery, National Brain Aneurysm & Tumor Center, United Hospital, 3033 Excelsior Blvd., Suite 495, Minneapolis, MN 55416, USA.

The visualization of intracranial epidermoid tumors is often limited by difficulties associated with distinguishing the tumor from the surrounding cerebrospinal fluid using traditional computed tomography (CT) or magnetic resonance imaging (MRI) modalities. This report describes our experience using CT cisternography to visualize intracranial epidermoid tumors in three illustrative cases. CT cisternography of the epidermoid tumor provides more clarity and precision compared to traditional neuroimaging modalities. Read More

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Correlation of Aneurysmal Wall Enhancement of Unruptured Intracranial Aneurysms on High-Resolution Vessel-Wall Imaging With Clinical Indices and Surgical Findings.

Neurosurgery 2021 Jun 10. Epub 2021 Jun 10.

Department of Neurosurgery, Guro Hospital, Korea University, College of Medicine, Seoul, Republic of Korea.

Background: Many physicians consider aneurysmal wall enhancement (AWE) on high resolution-vessel wall imaging (HR-VWI) as an imaging biomarker of unstable unruptured intracranial aneurysms (UIAs).

Objective: To evaluate the clinical value of different AWE signal intensities (SIs) by assessing the correlation between the AWE SIs and surgical findings and rupture risk assessment tools.

Methods: Twenty-six patients with 34 aneurysms who underwent surgical clipping were included. Read More

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Anterior Inferior Cerebellar Aneurysm Treated by Aneurysm Resection and Intracranial Artery Anastomosis : A Case Report and Literature Review.

Front Surg 2021 25;8:669433. Epub 2021 May 25.

Department of Neurosurgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China.

Anterior inferior cerebellar artery (AICA) aneurysms are relatively rare in clinical practice, accounting for <1% of all intracranial arteries. After the diagnosis and location are confirmed by angiography, magnetic resonance, and other imaging examinations, interventional, or surgical treatment is often used, but some complex aneurysms require reconstructive surgery. An 8-year-old male child was admitted to the hospital due to sudden disturbance of consciousness for 2 weeks. Read More

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Retrospective analysis of intracranial aneurysms after flow diverter treatment including color-coded imaging (syngo iFlow) as a predictor of aneurysm occlusion.

Interv Neuroradiol 2021 Jun 9:15910199211024056. Epub 2021 Jun 9.

Departments of Neuroradiology, Saarland University Hospital, Homburg/Saar, Germany.

Purpose: Flow Diverters (FD) have immensely extended the treatment of cerebral aneurysms in the past years. Complete aneurysm occlusion is a process that often takes a certain amount of time and is usually difficult to predict. Our aim was to investigate different syngo iFlow parameters in order to predict aneurysm occlusion. Read More

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Cardiac and Echocardiographic Markers in Cryptogenic Stroke with Incidental Patent Foramen Ovale.

J Stroke Cerebrovasc Dis 2021 Jun 6;30(8):105892. Epub 2021 Jun 6.

Department of Neurology, Juntendo University Urayasu Hospital, Chiba, Japan. Electronic address:

Objective: Some cardiac abnormalities could be a substrate for potential embolic source in cryptogenic stroke (CS). We evaluated whether cardiac and echocardiographic markers were associated with CS in patients with incidental patent foramen ovale (PFO) as defined using the Risk of Paradoxical Embolism (RoPE) score.

Materials And Methods: Among 677 patients enrolled in a multicenter observational CS registry, 300 patients (44%) had PFOs detected by transesophageal echocardiography. Read More

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Baseline Brain-to-Pelvis Imaging Predicts Subsequent Arterial Complications in Patients With Renal Artery Dissection.

Hypertension 2021 Jul 9;78(1):62-64. Epub 2021 Jun 9.

Division of Cardiology, Cliniques Universitaires Saint-Luc and Pole of Cardiovascular Research, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium (A.P., S.C., M.P.).

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Rescue balloon-assisted remodeling technique for protrusion of coil loop: A case report.

Authors:
Hak Cheol Ko

Medicine (Baltimore) 2021 May;100(19):e25783

Department of Neurosurgery, Stroke and Neurological Disorders Centre, Kyung Hee University Hospital at Gangdong.

Rationale: Among the possible complications during endovascular embolization of intracranial aneurysms, coil protrusion into the parent artery is associated with parent artery occlusion or thromboembolic of the distal arteries. There is no clearly established management strategy for coil protrusion. This report demonstrates our experience with balloon-assisted remodeling to reposition a protruded coil loop. Read More

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How Cerebral Vessel Tortuosity Affects Development and Recurrence of Aneurysm: Outer Curvature versus Bifurcation Type.

J Stroke 2021 May 31;23(2):213-222. Epub 2021 May 31.

Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.

Background And Purpose: Previous studies have assessed the relationship between cerebral vessel tortuosity and intracranial aneurysm (IA) based on two-dimensional brain image analysis. We evaluated the relationship between cerebral vessel tortuosity and IA according to the hemodynamic location using three-dimensional (3D) analysis and studied the effect of tortuosity on the recurrence of treated IA.

Methods: We collected clinical and imaging data from patients with IA and disease-free controls. Read More

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Appropriate iMAR presets for metal artifact reduction from surgical clips and titanium burr hole covers on postoperative non-contrast brain CT.

Eur J Radiol 2021 Jun 3;141:109811. Epub 2021 Jun 3.

Department of Radiology and Nuclear Medicine, Research Institute for Brain and Blood Vessels-Akita, 6-10 Senshu-kubota-machi, Akita, 010-0874, Japan. Electronic address:

Purpose: To evaluate suitable iterative metal artifact reduction (iMAR) presets for titanium neurosurgical clips and burr hole covers (BHCs) on postoperative non-contrast computed tomography (NCCT).

Method: Twenty-two patients who underwent NCCT after intracranial aneurysmal clipping were included. NCCT images were postprocessed using eight currently available iMAR presets. Read More

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Microsurgical Clip Trapping of Dorsal Internal Carotid Artery Blister Ruptured Aneurysm: 2-Dimensional Operative Video.

Oper Neurosurg (Hagerstown) 2021 Jun 7. Epub 2021 Jun 7.

Department of Neurosurgery, University of Miami Miller School of Medicine, Miami, Florida, USA.

Dorsal internal carotid artery (ICA) blister aneurysms are an uncommon aneurysm variant constituting 0.3% to 1% of intracranial aneurysms and can be due to ulceration, atherosclerosis, or dissection.1-3 Despite its rarity, it carries a high risk of rupture with an estimation of 0. Read More

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The implications of magnetic resonance angiography artifacts caused by different types of intracranial flow diverters.

J Cardiovasc Magn Reson 2021 Jun 7;23(1):69. Epub 2021 Jun 7.

Department of Radiology, Hacettepe University Hospitals, Ankara, Turkey.

Background: Serial cerebral angiographic imaging is necessary to ensure cerebral aneurysm occlusion after flow diverter placement. Time-of-flight (TOF)-magnetic resonance angiography (MRA) is used for this purpose due to its lack of radiation, contrast media and complications. The comparative diagnostic yield of TOF-MRA for different flow diverters has not been previously analyzed. Read More

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The outcomes of recurrent wide-necked intracranial aneurysms treated with the Woven EndoBridge (WEB): A retrospective bicenter study.

J Neuroradiol 2021 Jun 6. Epub 2021 Jun 6.

Department of Radiology, Turku University Hospital, Turku, Finland.

Background: The Woven EndoBridge (WEB) is a device for the treatment of intracranial wide-necked bifurcation aneurysms. The safety and effectiveness of WEB for intracranial aneurysms have both been evaluated in previous trials. Our aim was to study the outcomes of recurrent intracranial aneurysms (IAs) treated with WEB. Read More

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Symptomatic Unruptured Arteriovenous Malformations: Focal Oedema, Thrombosis and Vessel Wall Enhancement. A Retrospective Cohort Study.

World Neurosurg 2021 Jun 2. Epub 2021 Jun 2.

Division of Neuroradiology, JDMI, University Health Network, Department of Medical Imaging, University of Toronto, Toronto, Ontario, CANADA; Division of Neurosurgery, University Health Network, Ontario, CANADA.

Background: Focal brain edema in unruptured brain arteriovenous malformations (AVMs) is rare and associated with venous outflow abnormalities and aneurysm growth. These patients have an increased rate of progressive neurological symptoms, as well as a potentially increased risk of haemorrhage. In this study, we aim to assess in further detail the relationship between perifocal edema and enhancement of the vessel wall in symptomatic patients with an unruptured brain AVM. Read More

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Neoplastic cerebral aneurysm from triple-negative breast cancer: A case report.

Surg Neurol Int 2021 3;12:204. Epub 2021 May 3.

Superior Medical Experts, Saint Paul, Minnesota, United States.

Background: We present a rare case of a ruptured neoplastic aneurysms (NCA) caused by metastatic spread of triple-negative breast cancer (TNBC) in a female patient in her 60s. The patient had a medical history of TNBC and presented to the emergency department after experiencing 3 days of persistent headache.

Case Description: Head computed tomography (CT) revealed a small volume subarachnoid hemorrhage and digital subtraction angiography revealed a 3. Read More

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The utility of platelet inhibition testing in patients undergoing Pipeline embolization of intracranial aneurysms.

J Neurointerv Surg 2021 Jun 2. Epub 2021 Jun 2.

Diagnostic Radiology, Neuroradiology, University of Maryland School of Medicine, Baltimore, Maryland, USA.

Background: The utility of using the VerifyNow P2Y12 platelet inhibition assay in patients undergoing Pipeline embolization of intracranial aneurysms remains controversial. As we have routinely employed the assay for patients undergoing flow diversion, we elected to explore the relationship between P2Y12 hyporesponse as indicated by a P2Y12 Reaction Units (PRU) value >200 and treatment outcomes, including intraprocedural platelet aggregation and ischemic complications.

Methods: All successful intracranial aneurysm Pipeline treatments performed at our institution from November 2011 to May 2019 were included. Read More

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Transdural Anastomotic Aneurysm in Association with Moyamoya Disease: A Rare and Troublesome Neurosurgical Entity.

J Neurol Surg A Cent Eur Neurosurg 2021 Jun 2. Epub 2021 Jun 2.

Department of Neurosurgery, Jilin University First Hospital, Changchun, China.

Moyamoya disease (MMD) is an idiopathic progressive steno-occlusive disease in the internal carotid artery (ICA) bifurcation. In rare circumstances, transdural anastomotic aneurysm (TAA) could develop during the progression of MMD. We present an illustrative case of TAA in association with MMD. Read More

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Acute T2*-Weighted Magnetic Resonance Imaging Detectable Cerebral Thrombosis in a Rat Model of Subarachnoid Hemorrhage.

Transl Stroke Res 2021 Jun 2. Epub 2021 Jun 2.

Department of Neurosurgery, University of Michigan, 109 Zina Pitcher Place, Ann Arbor, MI, 48109-2200, USA.

Subarachnoid hemorrhage (SAH) is associated with a high incidence of morbidity and mortality, particularly within the first 72 h after aneurysm rupture. We recently found ultra-early cerebral thrombosis, detectable on T2* magnetic resonance imaging (MRI), in a mouse SAH model at 4 h after onset. The current study examined whether such changes also occur in rat at 24 h after SAH, the vessels involved, whether the degree of thrombosis varied with SAH severity and brain injury, and if it differed between male and female rats. Read More

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Double delay alternating with nutation for tailored excitation facilitates banding-free isotropic high-resolution intracranial vessel wall imaging.

NMR Biomed 2021 Jun 2:e4567. Epub 2021 Jun 2.

Department of Radiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.

The purpose of this study was to evaluate the use of a double delay alternating with nutation for tailored excitation (D-DANTE)-prepared sequence for banding-free isotropic high-resolution intracranial vessel wall imaging (IC-VWI) and to compare its performance with regular DANTE in terms of signal-to-noise ratio (SNR) as well as cerebrospinal fluid (CSF) and blood suppression efficiency. To this end, a D-DANTE-prepared 3D turbo spin echo sequence was implemented by interleaving two separate DANTE pulse trains with different RF phase-cycling schemes, but keeping all other DANTE parameters unchanged, including the total number of pulses and total preparation time. This achieved a reduction of the banding distance compared with regular DANTE enabling banding-free imaging up to higher resolutions. Read More

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CTA versus DSA as a Primary Diagnostic Tool in Non-Traumatic Subarachnoid Hemorrhages: Cost-Effectiveness Analysis Study.

World Neurosurg 2021 May 29. Epub 2021 May 29.

Neurosurgical Service, Beth Israel Deaconess Medical Center Brain Aneurysm Institute, Harvard Medical School, 110 Francis Street, Boston, MA, 02215, United States.

Background: Digital subtraction angiography (DSA) and computed tomographic angiography (CTA) are used to identify the cause of non-traumatic subarachnoid hemorrhage (SAH). There is no consensus on which to choose as the first diagnostic tool. We aimed to compare cost-effectiveness of CTA versus DSA as a primary tool for the cause of non-traumatic SAH. Read More

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