Coexistence of a right vertebral artery originating from the right common carotid artery, an aberrant right subclavian artery and a left primitive proatlantal intersegmental artery: First case report.

There are no reports of the coexistence of a right vertebral artery (VA) originating from the right common carotid artery (CCA), an aberrant right subclavian artery (SCA) and a primitive proatlantal intersegmental artery (PPIA); thus, we report such a case. A 61-year-old female presented with subarachnoid hemorrhage. Computed tomography angiography (CTA) and digital subtraction angiography (DSA) revealed a ruptured right posterior communicating artery (PcomA) aneurysm.

Delayed venous hemorrhage after endovascular treatment for a petrous ridge dural arteriovenous fistula.

Endovascular treatment (EVT) is the first-line treatment for petrous ridge dural arteriovenous fistulas (DAVFs). However, EVT is associated with complications. Among these complications, delayed venous hemorrhage is fatal.

New embolization technique for intracranial vascular disease with the assistance of an Apollo microcatheter.

It is difficult to access small and remote intracranial vascular lesions when using routine coil-delivery microcatheters. A thin Apollo microcatheter can access these vascular lesions. The Apollo microcatheter is intended to reduce the risk of catheter entrapment during the deployment of Onyx due to the detachable tip; furthermore, the Apollo microcatheter with a 3 cm detachable tip has 2 markers.

Magnetic resonance venography study of venous structures of the transverse-sigmoid sinus region in the Han Chinese population: A cross-sectional study.

Objective: Venous structures of the transverse-sigmoid sinus region have been insufficiently studied by magnetic resonance venography, especially in the healthy Han Chinese population.

Methods: Magnetic resonance venography data were reconstructed. The relevant parameters were recorded.

Primitive proatlantal intersegmental artery associated with moyamoya disease: A case report.

Primitive proatlantal intersegmental artery (PPIA) is rare and can be divided into types I and II. PPIAs can be associated with some anatomical variations and vascular diseases. However, no case of PPIA combined with moyamoya disease (MMD) has been reported.

Visual Analysis of Multi-Outcome Causal Graphs.

We introduce a visual analysis method for multiple causal graphs with different outcome variables, namely, multi-outcome causal graphs. Multi-outcome causal graphs are important in healthcare for understanding multimorbidity and comorbidity. To support the visual analysis, we collaborated with medical experts to devise two comparative visualization techniques at different stages of the analysis process.

Embolization of an epidural arteriovenous fistula of the sacral nerve root with a neural tube defect: A case report.

Introduction And Importance: Rarely, epidural arteriovenous fistula (AVF) of the sacral neural root may be associated with neural tube defects.

Case Presentation: A 46-year-old man presented with progressive weakness and numbness in both lower extremities. On physical examination, both lower extremities only had Grade III muscle strength.

Current state of endovascular treatment of anterior cerebral artery aneurysms.

The locations of anterior cerebral artery (ACA) aneurysms vary, and various aneurysms can occur along the course of the ACA. Ruptured and some unruptured ACA aneurysms may require aggressive treatment to avoid bleeding or rebleeding. Although open surgery is an effective treatment for ACA aneurysms, endovascular treatment (EVT) is becoming an alternative treatment in select cases.

Treatment of medullary aneurysm in the collateral circulation with a flow diverter: A case report.

Introduction And Importance: Spinal aneurysms rarely occur in the collateral circulation of the vertebral artery (VA). These aneurysms are difficult to treat. A flow diverter (FD) can be a therapeutic option.

Embolization of an arteriovenous malformation using the "pressure cooker" technique in the AICA via a marathon microcatheter: A case report.

Introduction And Importance: Embolization of an arteriovenous malformation (AVM) via the anterior inferior cerebellar artery (AICA) is difficult. The "pressure cooker" technique in the AICA via a marathon microcatheter can be effective.

Case Study: A 43-year-old man with a cerebellar hematoma involving the brainstem.

Endovascular treatment for brain arteriovenous malformations via the anterior choroidal artery for casting Onyx-18.

Few studies have investigated the safety of endovascular treatment (EVT) for brain arteriovenous malformations (BAVMs) via the anterior choroidal artery (AchA); therefore, this topic is worth studying further. This was a retrospective study of 18 consecutive patients with BAVMs that were treated via the AchA with Onyx casting. Clinical and angiographic data were collected from the patients and analyzed.

QTc prolongation after aneurysmal subarachnoid hemorrhage might be associated with worse neurologic outcome in patients receiving microsurgical clipping or embolization of the intracranial aneurysms: a retrospective observational study.

Purpose: QT interval prolongation is one of the most common electrocardiographic (ECG) abnormalities in patients with aneurysmal subarachnoid hemorrhage (aSAH). Whether corrected QT interval (QTc) prolongation is associated with perioperative cardiac events and dismal neurological outcome in mid to long-term follow-up in patients after aSAH is insufficiently studied and remains controversial.

Methods: We retrospectively studied the adult (≥ 18 years) patients admitted to our institution between Jan 2018 and Dec 2020 for aSAH who underwent intracranial aneurysm clipping or embolization.

Effect of moyamoya disease on the basilar artery and adjacent arteries on CTA.

Background: Computed tomographic angiography (CTA) is rarely used to explore the effect of moyamoya disease (MMD) on the basilar artery (BA) and its adjacent arteries.

Methods: Participants were divided into a control group and an MMD group. The relevant parameters were measured.

Coiling an aneurysm in the twig-like MCA via a Marathon microcatheter: A case report.

Introduction And Importance: The twig-like middle cerebral artery (MCA) is rare and has a plexiform network of small vessels that replaces the MCA trunk, with a prevalence ranging from 0.11 %-1.17 %.

Endovascular treatment for V3 segment direct vertebral-venous fistulas: A report of two cases and a literature review.

Introduction And Importance: Direct vertebrovertebral fistulas (VVFs) involving the V3 segment of the vertebral artery (VA) are rare. Endovascular treatment (EVT) can be used to obliterate these VVFs.

Case Presentation: Case 1 was a 30-year-old male with limb weakness.

Endovascular treatment of intracranial internal carotid artery bifurcation region aneurysms.

Intracranial internal carotid artery (ICA) bifurcation region aneurysms are uncommon. When treatment is necessary for ICA, endovascular treatment (EVT) can be a useful option. Due to the complexity of these aneurysms and the variability of EVT techniques, EVT for ICA bifurcation aneurysms is challenging.

Current research status and future of endovascular treatment for basilar artery aneurysms.

Aneurysms occurring along the basilar artery (BA) account for <1% of all intracranial aneurysms. Endovascular treatment (EVT) in particular is recommended for large unruptured BA aneurysms and ruptured BA aneurysms. Given that EVT techniques vary, a detailed review of EVT for BA aneurysms is necessary.

Coiling ruptured aneurysms arising from the posterior genu of the cavernous internal carotid artery: A report of two cases.

Introduction And Importance: Exceptionally, aneurysms from the posterior genu of the cavernous internal carotid artery (ICA) can rupture, resulting in subarachnoid hemorrhage (SAH). We reported such a case and provided another case with an unruptured aneurysm as a control to confirm the rarity of the ruptured aneurysm from the posterior genu of the cavernous ICA.

Case Presentation: Case 1: This was a 46-year-old female with SAH.

The effect of the occipital sinus on the torcular Herophili and neighboring structures.

Objective: The occipital sinus (OS) has many variations. It is unknown whether OS can change the angioarchitecture of torcular Herophili. Therefore, we performed magnetic resonance venography (MRV) in a cohort of Han Chinese individuals to determine whether OS can change the angioarchitecture of torcular Herophili.

Endovascular treatment for sphenoidal region dural arteriovenous fistula.

Sphenoidal region dural arteriovenous fistulas (DAVFs) are rare. Endovascular treatment (EVT) is an effective treatment approach. However, understanding and performing EVT for sphenoidal region DAVFs are difficult and challenging.

Morphometric CT angiographic study of the SSS and its adjacent structures: A comparative analysis between elderly and nonelderly individuals of a Han Chinese population.

Objective: The superior sagittal sinus (SSS) is an important structure, but few studies have analyzed it using computed tomography angiography (CTA).

Methods: This study was performed to examine the angiographic anatomy of the SSS and its adjacent structures using CTA in Han Chinese participants. According to age, participants were divided into elderly and nonelderly groups.

Embolization of cerebellar pial arteriovenous fistula presented with congestive edema of the brainstem and cervical cord.

Cerebellar pial arteriovenous fistula (PAVF) in adults presenting with congestive edema of the brainstem and cervical cord has rarely been reported. Here, we report such a case. A 59-year-old man presented with progressive weakness and numbness of the limbs and hiccups for 6 months.

Endovascular treatment of middle cerebral artery aneurysms: current status and future prospects.

Middle cerebral artery (MCA) aneurysms are complex and widely distributed throughout the course of the MCA. Various types of aneurysms can occur in the MCA. Ruptured as well as unruptured MCA aneurysms may require treatment to avoid bleeding or rebleeding.