Articles: neuronavigation.
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Acta neurochirurgica · Mar 2013
Application of low-field intraoperative magnetic resonance imaging in transsphenoidal surgery for pituitary adenomas: technical points to improve the visibility of the tumor resection margin.
Intraoperative magnetic resonance imaging (iMRI) is proven to be advantageous in transsphenoidal surgery (TSS) for pituitary adenomas. We evaluated the efficacy of low-field iMRI. Also, we described several techniques to enhance the visibility of the tumor resection margin. ⋯ iMRI maximizes the extent of resection and minimizes the possibility of unexpected tumor remnants in TSS for pituitary adenomas. It is essential to reduce imaging artifacts and enhance the visibility of the tumor resection margin during the use of low-field iMRI.
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We report our initial experience of real-time intraoperative C-arm computed tomography (C-arm CT: DynaCT)-guided navigation surgery for pituitary tumors. ⋯ The proposed technique of intraoperative visualization in the hybrid operating room can be easy to perform and may be a useful adjunct to conventional transsphenoidal surgery for an improved resection rate and less cavernous sinus and internal carotid artery injury.
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Radiation exposure represents significant risk to both operating room health care workers and their patients. The commonplace surgical implantation of spinal instrumentation often relies on fluoroscopy for guidance and verification. Advances in computerized tomography (CT)-based intraoperative navigation have improved accuracy of screw placement. The objective of this article is to quantify the radiation exposure from fluoroscopic and CT-based intraoperative navigation and to provide guidance in mitigating the exposure to patient and operating room (OR) staff. ⋯ Use of intraoperative CT-based navigation systems results in lower radiation dose to the surgeon compared with fluoroscopic-based methods. There is an increase in the radiation to the patient. In addition, it is necessary to consider and eliminate other perioperative sources of radiation, such as a postoperative CT scan, which are made redundant by this technology.