Long-term follow-up of an overexposure radiation incident in a cohort treated with linear accelerator-based stereotactic radiosurgery for intracranial arteriovenous malformations.

Objective: Dosimetric radiosurgery incidents are rare and probably insufficiently reported in scientific publications. After a long follow-up (FU), the authors studied the outcomes of patients treated with overexposure radiation for arteriovenous malformation (AVM) administered via stereotactic radiosurgery (SRS) at their department.

Methods: Between May 2006 and June 2007, 22 patients were treated for AVM with SRS.

Women in neurointervention, a gender gap? Results of a prospective online survey.

Background And Purpose: Women's representation in medicine has increased over time yet the proportion of women practicing neurointervention remains low. We conducted an anonymous online survey through which we could explore the gender gap in neurointervention, identify potential issues, difficulties, or obstacles women might face, and evaluate if men encounter similar issues.

Methods: An online questionnaire was designed in SurveyMonkey®.

Absence of susceptibility vessel sign is associated with aspiration-resistant fibrin/platelet-rich thrombi.

Background: The composition of the thrombus influences its retrievability by mechanical thrombectomy.

Purpose: Our study aimed to report on thrombi resistant to aspiration, regarding susceptibility vessel sign and histologic composition.

Methods: This observational study was based on a prospective database of acute anterior circulation ischemic strokes treated by mechanical thrombectomy.

External Validation of the ELAPSS Score for Prediction of Unruptured Intracranial Aneurysm Growth Risk.

Background And Purpose: Prediction of intracranial aneurysm growth risk can assist physicians in planning of follow-up imaging of conservatively managed unruptured intracranial aneurysms. We therefore aimed to externally validate the ELAPSS (Earlier subarachnoid hemorrhage, aneurysm Location, Age, Population, aneurysm Size and Shape) score for prediction of the risk of unruptured intracranial aneurysm growth.

Methods: From 11 international cohorts of patients ≥18 years with ≥1 unruptured intracranial aneurysm and ≥6 months of radiological follow-up, we collected data on the predictors of the ELAPSS score, and calculated 3- and 5-year absolute growth risks according to the score.

Predictive Value of Susceptibility Vessel Sign for Arterial Recanalization and Clinical Improvement in Ischemic Stroke.

Background and Purpose- Our goal was to evaluate whether the presence of a low signal intensity known as susceptibility vessel sign (SVS) on T2*-gradient echo imaging sequence was predictive of arterial recanalization and the early clinical improvement after mechanical thrombectomy. Methods- This observational study was based on a prospective database of acute ischemic strokes treated by mechanical thrombectomy. Inclusion criteria were patients with acute anterior ischemic stroke, diagnosed by magnetic resonance imaging, including a T2*-gradient echo imaging sequence, and treated by mechanical thrombectomy.

Concordance in Aneurysm Size at Time of Rupture in Familial Intracranial Aneurysms.

Background and Purpose- Intracranial aneurysm (IA) size and location are important determinants of aneurysm rupture risk. In familial IAs there is concordance of location; however, if such concordance exists for size is unknown. We analyzed the concordance of aneurysm size at time of rupture in familial IAs.

Arterial embolization with Onyx of head and neck paragangliomas.

Object: To report the morbidity and long term results in the treatment of paragangliomas by transarterial embolization with ethylene vinyl alcohol (Onyx), either as preoperative or palliative treatment.

Methods: Between September 2005 and 2012, 18 jugulotympanic, 7 vagal, and 4 carotid body paragangliomas (CBPs) underwent Onyx embolization, accordingly to our head and neck multidisciplinary team's decision. CBPs were embolized preoperatively.

Remnants and recurrences after the use of the WEB intrasaccular device in large-neck bifurcation aneurysms.

Background: Flow disruption with the WEB technique has been developed to treat large-neck bifurcation aneurysms.

Objective: To report our anatomic angiographic results at first (3-6 months) and second (18 ± 3 months) angiographic follow-up in a series of 15 patients.

Methods: Fifteen patients (15 aneurysms) were consecutively treated in our center by 2 operators for a large-neck bifurcation aneurysm between March 2012 and February 2014.

Cerebral hemodynamic changes induced by a lumbar puncture in good-grade subarachnoid hemorrhage.

Background: Patients with good-grade subarachnoid hemorrhage (SAH) are those without initial neurological deficit. However, they can die or present severe deficit due to secondary insult leading to brain ischemia. After SAH, in a known context of energy crisis, vasospasm, hydrocephalus and intracranial hypertension contribute to unfavorable outcome.

Spinal epidural arteriovenous fistulas associated with progressive myelopathy. Report of four cases.

The authors report the cases of four patients who presented with progressive myelopathy (one patient had been asymptomatic for 25 years) due to spinal epidural arteriovenous fistulas (AVFs). Clinical symptoms and magnetic resonance imaging findings were similar to those of dural AVFs. In contrast to dural AVFs, angiography showed that the lesions were fed by multiple vessels and drained in one case in multiple veins.