World Neurosurg
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The aim of this study was to evaluate the safety and efficacy of the microscopic minimally invasive keyhole technique for surgical resection of thoracic spinal meningiomas. ⋯ Based on our results, the microscopic minimally invasive keyhole technique can be used safely and effectively for resection of thoracic spinal meningiomas.
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Infectious intracranial aneurysms are rare but encountered when associated with rupture or detected on screening of high-risk patients. The time course of the development of these aneurysms is unknown. Ultimately, the data published on mycotic aneurysms are in the form of case series, retrospective studies, with one recent systematic review, all of which have difficulty defining specifics regarding aneurysmal formation in these patients. We present a case that may help define the time frame of mycotic aneurysm growth. ⋯ The time course of infectious intracranial aneurysm development is not known and difficult to define. This case illustrates an example of the development of a new infectious intracranial aneurysm and subsequent rupture over the course of 5 days, showing that these types of aneurysms and subsequent neurologic sequelae can happen acutely.
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In thoracolumbar spinal instrumentation surgery, pedicle screw fixation is widely used, whereas screw loosening occurs only occasionally over time. It is common to evaluate screw loosening by the radiographic lucent zone around screws, which can neither evaluate loosening quantitatively nor detect slight screw loosening. In the present technical note, we describe a novel assessment technique of screw loosening by generating 3-dimensional screw images from computed tomography data and superposing them in time series. ⋯ This technique enables the quantitative evaluation of screw loosening and loosening between screws and rods. In conjunction with conventional methods of assessing radiographic lucent zone, we are able to obtain more accurate information regarding screw loosening after spinal instrumentation surgery.
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Successful resection of arteriovenous malformation (AVM) depends on preoperative assessment of the detailed morphology of the AVM. Simultaneous detailed three-dimensional visualization of the feeding arteries, draining veins, and surrounding structures is needed. The aim of this study was to evaluate the usefulness of high-resolution three-dimensional multifusion medical imaging (HR-3DMMI) for preoperative planning of AVM resection. ⋯ HR-3DMMI technique demonstrated the precise locations of feeding arteries, draining veins, and surrounding important tissues, such as corticospinal tract and arcuate fiber, preoperatively and estimated the appropriate route for resection of the AVM. HR-3DMMI is expected to be a very useful support tool for surgery of AVM.