Surgical Strategies Of Interhemispheric Approaches

Object. To provide thorough surgical strategies for the deep lesions by interhemispheric approaches and improve the operative outcomes of deep lesions. Methods. (1) Microsurgical anatomy of interhemispheric approaches and corresponding structures were made to adult cadaveric brains; (2)Heavily T2 weighted reversed magnetic resonance images (T2RMRI) were studied and compared about the presentation of the nerves and blood vessels in the interhemispheric fissure. (3)To analyze retrospectively clinical outcomes of deep cerebral lesions. Results and Conclusions. (1)It was very important for planning interhemispheric approaches to understand the distribution and patterns of collateral circulation of bridging veins and the organization of deep cerebral veins by DSA before surgery; (2)There were different patterns of collateral circulation of bridging veins by different lesions; (3) More information could be provided for planning interhemispheric approaches by T2RMRI. (4)The PC point was an important surgical landmark in planning the surgical strategy for treating infracallosal distal anterior cerebral artery aneurysms. (5) Familiarity with the anatomy relative to interhemispheric approaches and thorough preoperative and intraoperative surgical strategies were beneficial to improving the operative outcomes of deep lesions by interhemispheric approaches.