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Other navigational workstations devoted solely to surgical planning may be effective, but they are bulky and require dedicated areas in the hospital where they can be used. 2 Unfortunately, these systems are often expensive and not readily available to all institutions, especially those in low-to middle-income countries. 1 Neuronav-igational systems, such as Stealth (Medtronic) and Curve (Brainlab), are useful adjuncts that enable accurate (mean error < 1.5 mm) surgical planning as well as real-time in-traoperative orientation. As early as 1998, neurosurgeons developed the means of creating three-dimensional (3D) reconstructions based on imaging technologies to address this problem. Inexperience can result in inappropriate incisions, inadequate craniotomies, and difficult surgeries.
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P lanning how to conduct neurosurgery is a daunting task, especially for trainees and young neuro-surgeons. It helps the surgeon to plan a safe craniotomy and lesionectomy. This is a low-cost and easy technique that can be quickly learned and performed before every surgery. The use of a region of interest to show better the lesion under the cortical surface and in the three-dimensional reconstruction of the head was also helpful. We found this technique to be useful to help identify the gyri and cortical veins and use them to find the lesions. The reconstructions were compared to the intraoperative view. With the aid of some tools, it is possible to create a colored image of the lesion and also to calculate the distance between the areas of interest and some easily identifiable structure, making it easier to plan the site of the craniotomy identify the topography of the lesion.
Osirix lite how to adjust contrast of image software#
Using the free computer software Osirix, we have created a 3-dimensional reconstruction of the head and cerebral showing the gyri and superficial veins. This might be a challenge, especially in small subcortical lesions and when there is a distortion of the cortical anatomy. During the surgery for intrinsic brain lesions, it is important to plan the proper site of the craniotomy and to identify the relations with the gyri and superficial veins.