Surg Neurol
-
Prophylactic treatment of unruptured small brain aneurysms is still controversial due to the low risk of rupture. Distinguishing which small aneurysms are at risk for rupture has become important for treatment. Previous studies have indicated a variety of hemodynamic properties that may influence aneurysm rupture. This study uses hemodynamic principles to evaluate these in the context of ruptured and unruptured small aneurysms in a single location. ⋯ A comparison of hemodynamic properties between ruptured and unruptured small ICA-Oph aneurysms found that some hemodynamic properties vary between small aneurysms although they are similar in size and share the same anatomical location. In particular, WSS may be a useful hemodynamic factor for studying small aneurysm rupture.
-
Characterization of WM alteration using MR imaging is important in the pre- and intraoperative assessment of brain tumors. This study characterizes the extent and severity of WM tract alterations near brain tumors using DTI in an effort to determine preoperative viability or resectability of the adjacent WM tracts. Fractional anisotropy is an important DTI-derived metric of MR imaging. ⋯ Quantitative analysis of DTI data may provide insight as to whether WM tracts are salvageable preoperatively.
-
The aim of this study was to investigate the ability of a SERM, RLX, to prevent vasospasm in a rabbit model of SAH. ⋯ These findings demonstrate that RLX has marked vasodilatatory effect in an experimental model of SAH in rabbits. This observation may have clinical implications suggesting that this SERM drug could be used as possible anti-vasospastic agent in patients without major adverse effects.
-
Access to lesions located in the atrium of the lateral ventricle without causing neurologic deficit can be challenging. Here, we demonstrate the supracerebellar transtentorial transcollateral sulcus (STTS) approach as an alternative route to the atrium of the lateral ventricle using anatomical dissections in cadavers. ⋯ The STTS approach may be an effective alternative approach to lesions located in the medioposterior aspect of the atrium of the lateral ventricle in selected cases. Further clinical studies to evaluate the safety and efficacy of this approach are needed.
-
Ultrasonic surgical aspirators have been used mainly for removing brain tumors. Because of their longitudinal and torsional tip, they are used for cutting the bone structures in spinal surgery installing a scalpel-type tip. The purpose of this report is to describe the effectiveness and surgical pitfalls of an ultrasonic bone curette in laminoplastic laminotomy and hemilaminotomy. ⋯ The scalpel-type ultrasonic bone curette is useful for cutting bone and effective for reconstruction of the laminae. Laminotomy with an ultrasonic bone curette is safe and minimally invasive. To prevent dural tear, we recommend drilling laminae to make the bone thin as the first step, followed by cutting the remaining laminae using a bone curette especially in cases with calcified or tense dura mater.