keyword
https://read.qxmd.com/read/38535138/an-improved-path-finding-method-for-the-tracking-of-centerlines-of-tortuous-internal-carotid-arteries-in-mr-angiography
#1
JOURNAL ARTICLE
Se-On Kim, Yoon-Chul Kim
Centerline tracking is useful in performing segmental analysis of vessel tortuosity in angiography data. However, a highly tortuous) artery can produce multiple centerlines due to over-segmentation of the artery, resulting in inaccurate path-finding results when using the shortest path-finding algorithm. In this study, the internal carotid arteries (ICAs) from three-dimensional (3D) time-of-flight magnetic resonance angiography (TOF MRA) data were used to demonstrate the effectiveness of a new path-finding method...
February 28, 2024: Journal of Imaging
https://read.qxmd.com/read/38532760/transient-recurrent-episodes-of-abducens-nerve-palsy-and-cheiro-oral-syndrome-in-a-sub-occlusive-carotid-bulb-atherosclerotic-stenosis
#2
Moussa Toudou-Daouda, Roger-Venant Yatwa-Zaniwe, Nana-Rahamatou Aminou-Tassiou, Nicolas Chausson, Didier Smadja
We report the case of a male in his 50s with a history of smoking admitted to our hospital for three transient recurrent episodes of less than 60 min of cheiro-oral paresthesias and binocular horizontal diplopia with convergent strabismus. On admission, his neurological examination was normal. Cerebral magnetic resonance imaging showed no cerebral lesion. Computed tomography angiography showed a sub-occlusive right carotid bulb atherosclerotic stenosis, the absence of abnormality of the subclavian arteries and the origin of the vertebral arteries, and no stenosis of the basilar artery or posterior cerebral arteries...
March 2024: Oxford Medical Case Reports
https://read.qxmd.com/read/38531081/impact-of-intraoperative-cortical-indocyanine-green-extravasation-on-local-vasogenic-edema-immediately-after-direct-revascularization-in-an-adult-with-moyamoya-disease-illustrative-case
#3
JOURNAL ARTICLE
Maeho Yamasaki, Masaki Ito, Haruto Uchino, Taku Sugiyama, Miki Fujimura
BACKGROUND: Local vasogenic edema induced after direct revascularization in moyamoya disease (MMD) is associated with blood-brain barrier dysfunction, potentially leading to postoperative cerebral hyperperfusion (CHP) or delayed intracerebral hemorrhage. This phenomenon allows the leakage of fluids, proteins, and other substances from the blood vessels into the extracellular compartment. Typically, such edema is observed postoperatively rather than intraoperatively. OBSERVATIONS: A 48-year-old female with ischemic-onset MMD underwent revascularization on her left hemisphere with Suzuki's angiographic stage III...
March 25, 2024: J Neurosurg Case Lessons
https://read.qxmd.com/read/38530384/posterior-cerebral-artery-pca-accessory-pca-hyperplastic-anterior-choroidal-artery-anastomosis-detected-on-magnetic-resonance-angiography
#4
JOURNAL ARTICLE
Akira Uchino, Kazuo Tokushige
PURPOSE: To describe a case of posterior cerebral artery (PCA)-accessory PCA (hyperplastic anterior choroidal artery) anastomosis detected on magnetic resonance angiography. METHODS: A 76-year-old man with a history of cerebral infarction underwent cranial magnetic resonance (MR) imaging and MR angiography of the intracranial region for the evaluation of brain and vascular lesions. The MR machine was a 3-Tesla scanner. MR angiography was performed using a standard three-dimensional time-of-flight technique...
March 26, 2024: Surgical and Radiologic Anatomy: SRA
https://read.qxmd.com/read/38529447/the-anatomical-variation-of-the-distal-anterior-cerebral-artery-an-angiographic-study-in-a-greek-population-sample
#5
JOURNAL ARTICLE
Christos Chrissicopoulos, Georgios Mavrovounis, Maria Piagkou, George Triantafyllou, Nikolaos Nasis, George Stranjalis, Alexander Andreou, Theodosis Kalamatianos
Objective The current retrospective angiographic study establishes the rates of variants in the distal anterior cerebral artery (DACA) in a sample of the Greek population. Methods Data were collected from 456 patients who underwent two-dimensional (2D) or three-dimensional (3D) digital subtraction angiography (DSA) of the carotid and vertebral arteries bilaterally. The study focused on patients with good visualization of the anterior and posterior circulations and employed magnetic resonance (MR) or computed tomography (CT) angiography for 3D reconstruction...
February 2024: Curēus
https://read.qxmd.com/read/38529032/age-and-duration-of-hypertension-are-associated-with-carotid-artery-tortuosity
#6
JOURNAL ARTICLE
Huan Huang, Jian-Jiong Fu, Pi-Guang Yao, Meng-Yao Wang, Xue Wang, An-Na Guo, Wei Li, Shao-Huai Chen, Dan-Dong Li
OBJECTIVE: Tortuosity of the carotid artery is a common angiographic finding that may impact blood flow and neuronal function. However, information on its prevalence and risk factors remains limited. In this study, we determined to explore the factors affecting carotid artery tortuosity. METHODS: The head and neck computed tomography angiography (CTA) imaging and cerebral angiography data performed at the Second Affiliated Hospital of Wenzhou Medical University between January 2019 and September 2021 were collected, and a total of 356 cases were enrolled in the study after screening...
2024: Frontiers in Neurology
https://read.qxmd.com/read/38528780/ct-perfusion-based-rcbf-38-volume-is-independently-and-negatively-associated-with-digital-subtraction-angiography-collateral-score-in-anterior-circulation-large-vessel-occlusions
#7
JOURNAL ARTICLE
Dhairya A Lakhani, Aneri B Balar, Manisha Koneru, Sijin Wen, Burak Berksu Ozkara, Richard Wang, Meisam Hoseinyazdi, Mehreen Nabi, Ishan Mazumdar, Andrew Cho, Kevin Chen, Sadra Sepehri, Nathan Hyson, Risheng Xu, Victor Urrutia, Licia Luna, Argye E Hillis, Jeremy J Heit, Greg W Albers, Ansaar T Rai, Vivek S Yedavalli
BACKGROUND: Collateral status (CS) is an important biomarker of functional outcomes in patients with acute ischemic stroke secondary to large vessel occlusion (AIS-LVO). Pretreatment CT perfusion (CTP) parameters serve as reliable surrogates of collateral status (CS). In this study, we aim to assess the relationship between the relative cerebral blood flow less than 38% (rCBF <38%), with the reference standard American Society of Interventional and Therapeutic Neuroradiology (ASITN) collateral score (CS) on DSA...
March 25, 2024: Neuroradiology Journal
https://read.qxmd.com/read/38528480/early-ambulation-protocol-after-diagnostic-transfemoral-cerebral-angiography-an-evidence-based-practice-project
#8
JOURNAL ARTICLE
Hao Liang, Richun Ye, Nana Song, Canhui Zhu, Miaolong Xu, Qiaoyu Ye, Lin Wei, Jiehan Chen
BACKGROUND: No uniform consensus has been achieved regarding the ambulation protocol after transfemoral cerebral angiography (TFA). Until now, in most hospitals patients are prescribed 8-12 h strict immobilization along with bed rest in the supine position after TFA in China, which causes great discomfort to patients. OBJECTIVE: To evaluate the effect of an evidence-based early ambulation protocol on the prevention of vascular complications and general discomfort in patients following transfemoral cerebral angiography (TFA)...
March 25, 2024: BMC Neurology
https://read.qxmd.com/read/38528441/percutaneous-femoral-access-stuck-guide-wire-decannulation-difficulty-due-to-unravelling-and-knotting
#9
JOURNAL ARTICLE
Bhanu Pratap Singh Chauhan, Binita Dholakia, Ashfaque Khan, Chirag Hirani, Satheesh Kumar, Dibya Jyoti Mahakul, Abhishek Katyal, Wajid Nazir, Daljit Singh
Percutaneous techniques for femoral arterial access are increasingly being performed due to advances in endovascular cerebral procedures, as they provide a less morbid and minimally invasive approach than open procedures. Common complications associated with this peripheral puncture include hematoma, bleeding, pseudoaneurysm, arteriovenous fistula, retroperitoneal bleeding, inadvertent venous puncture, dissection, etc. The retrograde femoral access is currently the most frequently used arterial access as it is technically straightforward, allows for the use of larger size sheaths and catheters, allows repeated attempts, etc...
March 27, 2024: Journal of Cerebrovascular and Endovascular Neurosurgery
https://read.qxmd.com/read/38527154/diagnostic-performance-of-carotid-ring-sign-on-ct-angiography-in-internal-carotid-true-occlusion
#10
JOURNAL ARTICLE
Tingyu Yi, Yi Sui, Dinghuan Zheng, Xinwen Ren, Xiaohui Lin, Yanmin Wu, Dinglai Lin, Zhinan Pan, Xiufen Zheng, Ganji Hong, Meihua Wu, Lisan Zeng, Wenhuo Chen
BACKGROUND: To differentiate between pseudo occlusion (PO) and true occlusion (TO) of internal carotid artery (ICA) is important in thrombectomy treatment planning for patients with acute ischemic stroke. Although delayed contrast filling has been differentiated carotid PO from TO, its application has been limited by the implementations of multiphasic computed tomography angiography. In this study, we hypothesized that carotid ring sign, which is readily acquired from single-phasic CTA, can sufficiently differentiate carotid TO from PO...
April 2024: Stroke; a Journal of Cerebral Circulation
https://read.qxmd.com/read/38526586/flat-panel-detector-perfusion-imaging-and-conventional-multidetector-perfusion-imaging-in-patients-with-acute-ischemic-stroke-a-comparative-study
#11
JOURNAL ARTICLE
Bettina L Serrallach, Adnan Mujanovic, Nikolaos Ntoulias, Michael Manhart, Mattia Branca, Alex Brehm, Marios-Nikos Psychogios, Christoph C Kurmann, Eike I Piechowiak, Sara Pilgram-Pastor, Thomas Meinel, David Seiffge, Pasquale Mordasini, Jan Gralla, Tomas Dobrocky, Johannes Kaesmacher
PURPOSE: Flat-panel detector computed tomography (FDCT) is increasingly used in (neuro)interventional angiography suites. This study aimed to compare FDCT perfusion (FDCTP) with conventional multidetector computed tomography perfusion (MDCTP) in patients with acute ischemic stroke. METHODS: In this study, 19 patients with large vessel occlusion in the anterior circulation who had undergone mechanical thrombectomy, baseline MDCTP and pre-interventional FDCTP were included...
March 25, 2024: Clinical Neuroradiology
https://read.qxmd.com/read/38526305/bovine-aortic-arch-with-an-aberrant-left-vertebral-artery-in-a-3-year-old-boy-with-vacterl-association-a-case-report
#12
JOURNAL ARTICLE
Jesús Martínez-García, Sara F Ordorica-Sandoval, Erick Rivera-Sainz, Manuel A Beltrán-Salas, Nidia León-Sicairos, Adrian Canizalez-Roman
BACKGROUND The VACTEREL association is an acronym that includes vertebral malformations (V), anal atresia (A), cardiac defects (C), tracheoesophageal fistula (TE), renal defects (R), and limb malformations (L). The aortic arch is the section between the ascending aorta and the descending aorta, where some variants have been described, such as the right aortic arch and bovine aortic arch, among others. A rare presentation in the Natsis classification is the "type X" where a bovine aortic arch and anomalous origin of the left vertebral artery are present...
March 11, 2024: American Journal of Case Reports
https://read.qxmd.com/read/38523590/direct-angiographic-comparison-of-different-velocity-selective-saturation-inversion-and-dante-labeling-modules-on-cerebral-arteries
#13
JOURNAL ARTICLE
Dapeng Liu, Dan Zhu, Qin Qin
PURPOSE: This study evaluated the velocity-selective (VS) MRA with different VS labeling modules, including double refocused hyperbolic tangent, eight-segment B1-insensitive rotation, delay alternating with nutation for tailored excitation, Fourier transform-based VS saturation, and Fourier transform-based inversion. METHODS: These five VS labeling modules were evaluated first through Bloch simulations, and then using VSMRA directly on various cerebral arteries of healthy subjects...
March 25, 2024: Magnetic Resonance in Medicine
https://read.qxmd.com/read/38523550/deconstructive-repair-of-a-direct-carotid-cavernous-fistula-via-a-posterior-circulation-retrograde-approach
#14
JOURNAL ARTICLE
Jonathan R Crowe, Robert W Regenhardt, Adam A Dmytriw, Justin E Vranic, Christopher J Stapleton, Aman B Patel
We report a case of a 24-year-old patient who presented after a head trauma with a traumatic occlusion of his left internal carotid artery. He underwent diagnostic cerebral angiogram and was found to have a direct left carotid-cavernous fistula (CCF) with retrograde filling from the posterior circulation across the posterior communicating artery. Because of the severe injury to the left internal carotid artery (ICA), reconstructive repair of the ICA was not possible. The patient underwent deconstructive repair of the CCF by coil embolization using a posterior retrograde approach...
March 25, 2024: Journal of Cerebrovascular and Endovascular Neurosurgery
https://read.qxmd.com/read/38521223/posterior-cerebral-artery-to-superior-cerebellar-artery-side-to-side-bypass-via-extreme-lateral-supracerebellar-infratentorial-approach-elscit-technical-note
#15
JOURNAL ARTICLE
Barbara Verbraeken, Rabih Aboukais, Maurits Voormolen, Thijs Van der Zijden, Hieronymus D Boogaarts, Maarten Vanloon, Tomas Menovsky
BACKGROUND AND OBJECTIVE: Difficult-to-treat aneurysms of the distal posterior cerebral artery (PCA) can often be treated by parent artery occlusion. A cerebrovascular bypass can complement PCA occlusion to curb the risk of ischemic complications. An in-situ bypass may be considered when the occipital artery or superficial temporal artery cannot serve as a bypass donor. This paper describes the use of a side-to-side bypass of superior cerebellar artery (SCA) as a donor to the posterior cerebral artery (PCA) via an extreme lateral supracerebellar infratentorial (ELSCIT) approach...
March 21, 2024: World Neurosurgery
https://read.qxmd.com/read/38521216/neuro-interventional-diagnosis-and-treatment-using-the-right-transradial-approach-in-patients-with-aberrant-right-subclavian-artery
#16
JOURNAL ARTICLE
Bin Hu, Jing Li, Liang Li, Hao Yin, Chong Zheng, Liu Fan
BACKGROUND: Aberrant right subclavian artery (ARSA) is a common anatomical variation that presents challenges in cerebral angiography and interventions through the transradial approach (TRA). ARSA is often identified during surgery using the right transradial approach (R-TRA), and this necessitates a change in the approach. OBJECTIVE: To assess the effectiveness and safety of neurological interventions using R-TRA in patients with ARSA. METHODS: We retrospectively analyzed cases that underwent cerebral angiography and interventions at Huangpi District People's hospital from January 2023 to July 2023...
March 21, 2024: World Neurosurgery
https://read.qxmd.com/read/38520082/a-patient-specific-circle-of-willis-blood-flow-model-in-predicting-outcomes-of-balloon-test-occlusion
#17
JOURNAL ARTICLE
Jianmin Li, Daniel Li, Ali Alaraj, Xinjian Du, Kezhou Wang, Fady T Charbel
BACKGROUND AND PURPOSE: Balloon test occlusion (BTO) evaluates cerebral ischemic tolerance before internal carotid artery (ICA) sacrifice but carries risks like dissection and thrombosis. This study introduces a new approach using a patient-specific circle of Willis (COW) blood flow model, based on non-invasive quantitative MR angiography (qMRA) measurements, to predict the outcomes of BTO. METHODS: We developed individualized COW blood flow models for 43 patients undergoing BTO...
March 22, 2024: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://read.qxmd.com/read/38518052/thrombectomy-for-delayed-thromboembolism-in-a-recurrent-cerebral-aneurysm-previously-treated-with-coiling-a-case-report
#18
JOURNAL ARTICLE
Ya Shao, Yuan Yang, Haidong Huang, Ting Wang, Jinglun Li, Yushan Jiang, Ziwei Yuan, Jiayi Tang, Dihu Wang, Zerui Xiang, Xue Zeng, Zhou Yu, Zhongchun He, Zhengzhou Yuan
RATIONALE: Giant intracranial aneurysms pose a significant threat due to high mortality rates upon rupture, prompting interventions such as neurosurgical clipping or endovascular coiling. PATIENT CONCERNS: We present a rare case involving a 47-year-old female with a history of successfully treated ruptured giant intracranial aneurysms. Six months post-surgical clipping, she developed symptoms of acute ischemic stroke, prompting the decision for neurosurgical coiling and stent-assisted aneurysm coil embolization due to recurrent intracranial aneurysms...
March 22, 2024: Medicine (Baltimore)
https://read.qxmd.com/read/38517610/deep-learning-based-3d-cerebrovascular-segmentation-workflow-on-bright-and-black-blood-sequences-magnetic-resonance-angiography
#19
JOURNAL ARTICLE
Langtao Zhou, Huiting Wu, Guanghua Luo, Hong Zhou
BACKGROUND: Cerebrovascular diseases have emerged as significant threats to human life and health. Effectively segmenting brain blood vessels has become a crucial scientific challenge. We aimed to develop a fully automated deep learning workflow that achieves accurate 3D segmentation of cerebral blood vessels by incorporating classic convolutional neural networks (CNNs) and transformer models. METHODS: We used a public cerebrovascular segmentation dataset (CSD) containing 45 volumes of 1...
March 22, 2024: Insights Into Imaging
https://read.qxmd.com/read/38515766/fenestration-of-the-posterior-cerebral-artery-p1-p2-junction-a-case-report
#20
Hideki Endo, Hirohiko Nakamura
Fenestration is a rare anatomical variation in the posterior cerebral artery. To the best of our knowledge, there are few reports of fenestrations at the posterior cerebral artery P1-P2 junction. Herein, we report a case of fenestration of the posterior cerebral artery P1-P2 junction diagnosed by 3-T magnetic resonance imaging and magnetic resonance angiography. A 75-year-old woman visited our hospital because of headaches. Magnetic resonance imaging incidentally showed fenestration around the P1-P2 segment of the right posterior cerebral artery...
June 2024: Radiology Case Reports
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