Moringlane J R, Bartylla K, Hagen T, Waziri A
Department of Neurosurgery, Saarland University, Homburg/Saar, Germany.
Minim Invasive Neurosurg. 1997 Sep;40(3):83-6. doi: 10.1055/s-2008-1053422.
To assess the feasibility and value of spiral CT angiography of the brain vessels for the planning of neurosurgical stereotactic interventions.
Fourty-two patients harboring cerebral lesions underwent spiral CT angiography prior to stereotactic biopsy. Thin spiral CT slices with a collimator slice thickness of 1 mm and a pitch of 1 were used. Multiplanar reconstructions and maximum intensity projections (MIP) were obtained as well as 3-D tissue definition.
There was a sufficient visualization of vessels and of their relationship to the lesion. Tumor neovascularization was clearly demonstrated. Arteries could be shown separately. Stereotactic coordinates of targets were chosen at a safe distance from the vessels and the simulation of tarjectories using the cine loop was made possible. In three cases the presence of a pathological vascularization warned against a stereotactic biopsy.
Spiral CT angiography seems to yield enough topographical information for the accurate planning of stereotactic surgery for brain lesions. CT angiography with the helical technique is rapid and less invasive than digital subtraction angiography.
评估脑血管螺旋CT血管造影术在神经外科立体定向手术规划中的可行性和价值。
42例脑病变患者在立体定向活检前接受螺旋CT血管造影。使用准直器切片厚度为1mm、螺距为1的薄层螺旋CT切片。获得多平面重建和最大密度投影（MIP）以及三维组织定义。
血管及其与病变的关系显示充分。肿瘤新生血管清晰可见。动脉可单独显示。靶点的立体定向坐标选择在距血管安全距离处，并且可以使用电影环模拟轨迹。3例中病理性血管形成的存在提示不宜进行立体定向活检。
螺旋CT血管造影似乎能提供足够的地形学信息，用于准确规划脑病变的立体定向手术。螺旋技术的CT血管造影快速，且比数字减影血管造影侵入性小。
