Development of a Carotid Cavernous Aneurysm after Medical Treatment of a Prolactinoma: A Case Report.

This is the first report of a carotid aneurysm that developed from a cavernous carotid artery contiguous with a prolactinoma during medical treatment of the prolactinoma, which gradually grew larger while the tumor regressed. A 78-year-old woman presented with headache and neurological symptoms indicating the involvement of cranial nerves in the cavernous sinus. Gadolinium-enhanced T1-weighted magnetic resonance imaging on admission revealed an abnormal right cavernous sinus, with an approximately 17 mm mass extending into the right cavernous portion of the internal carotid artery, and was contiguous with the intracavernous carotid artery.

Risk Analysis of Unruptured Intracranial Aneurysms: Prospective 10-Year Cohort Study.

Background And Purpose: The natural history of unruptured intracranial aneurysms remains unclear, and management strategy is not well defined.

Methods: From January 2003 to December 2012, we enrolled patients with aneurysm in our institution. In total, 2252 patients with 2897 aneurysms were eligible for analysis, and 1960 eligible aneurysms were conservatively managed.

Robotic digital subtraction angiography systems within the hybrid operating room.

Background: Fully equipped high-end digital subtraction angiography (DSA) within the operating room (OR) environment has emerged as a new trend in the fields of neurosurgery and vascular surgery.

Objective: To describe initial clinical experience with a robotic DSA system in the hybrid OR.

Methods: A newly designed robotic DSA system (Artis zeego; Siemens AG, Forchheim, Germany) was installed in the hybrid OR.

Comparing accuracy of cerebral aneurysm size measurements from three routine investigations: computed tomography, magnetic resonance imaging, and digital subtraction angiography.

Modern imaging technologies, such as computed tomography (CT) angiography, magnetic resonance (MR) angiography, and digital subtraction (DS) angiography are widely used for pretreatment evaluation of cerebral aneurysms, but the relative accuracies of these modalities are unclear. This study compared the measurements of aneurysm neck and dome height and width on CT angiography, time-of-flight (TOF)-MR angiography, and DS angiography using a three-dimensional workstation. An elastic model of a side-wall aneurysm was connected to an artificial heart pulsatile circuit system.

A rabbit model for efficacy evaluation of endovascular coil materials.

Background: To investigate biomaterials seeking for their possible use for aneurysm treatment, in vivo screening tests using a number of potential materials are required. However, there is no established animal model that is suitable for such purpose. Some models require special preparation of tested materials for transcatheter delivery and others are inappropriate in view of their cost-effectiveness.

New thermoreversible liquid embolic agent for embolotherapy: technical report.

Introduction: To evaluate potential feasibility of new liquid embolic agent, thermoreversible gelation polymer (TGP), for embolotherapy.

Methods: TGP is a liquid polymer that was originally developed as a cell culture medium for tissue engineering. TGP becomes liquid at temperatures lower than the sol-gel transition temperature (TT) and becomes a gel at temperatures higher than the TT.

Unruptured intracranial aneurysms: incidence of rupture and risk factors.

Unlabelled: Backgrounds and Purpose- The authors evaluated the incidence of rupture of unruptured intracranial saccular aneurysm during observation.

Methods: Between January 2003 and December 2006, a total of 419 patients with 529 unruptured intracranial saccular aneurysms were observed without treatment. The mean follow-up duration was 905.

Dynact soft-tissue visualization using an angiographic C-arm system: initial clinical experience in the operating room.

Introduction: DynaCT is a clinical application protocol to create computed tomographic (CT)-like images allowing soft-tissue visualization acquired from an angiography system. A cone beam three-dimensional CT reconstruction is produced from the acquisition of two-dimensional projection images by rotating the c-arm with x-ray source and image receptor around the patient. The purpose of this study is to evaluate the clinical efficacy of DynaCT in the operating room.

Effective and safe conditions of low-frequency transcranial ultrasonic thrombolysis for acute ischemic stroke: neurologic and histologic evaluation in a rat middle cerebral artery stroke model.

Background And Purpose: Transcranial ultrasound (TUS) enhances thrombolysis and is expected to be useful for the treatment of ischemic stroke. However, neither its effectiveness in improving neurologic outcome nor its safety in living tissue has been fully established. We examined the efficacy and safety of low-frequency TUS under appropriate conditions of ultrasound for thrombolytic treatment in a rat middle cerebral artery stroke model.

Endovascular operating suite: future directions for treating neurovascular disease.

Object: The purpose of this study was to evaluate initial experiences in a surgical operating room (OR) with a multipurpose angiography unit, which offers integrated neurosurgical and radiological capabilities.

Methods: A specially designed biplane digital subtraction (DS) angiography system was installed in the neurosurgery OR. The new suite, which allows three-dimensional DS angiography with C-arm for computerized tomography and microsurgery capabilities, allows the neurosurgeon to perform a wide range of neurosurgical and endovascular procedures.

[Endovascular treatment of large petrous internal carotid artery aneurysm associated with chronic otitis media: case report].

Aneurysms of the petrous internal carotid artery are rare, and surgical treatment of the aneurysm in the petrous bone carries high risk with procedure. We report a case of large petrous internal carotid artery aneurysm associated with otitis media. A 58-year-old female was admitted to our institution with left hearing loss and facial palsy.