We used microscopy to conduct qualitative and quantitative analysis of four surgical approaches commonly used in the surgery of the ambient cistern: infratentorial supracerebellar (SC), occipital interhemispheric (OI), subtemporal (ST) and transchoroideal (TC). Additionally, we performed a parahypocamppal gyrus resection (STh) in ST context.
Each approach was performed in three cadaveric heads (six sides). After the microscopic anatomical dissection, the parahyppocampal gyrus was resected through a ST approach. The qualitative analysis was based on anatomical observation and the quantitative analysis was based on the linear exposure of vascular structures and the area of exposure of the ambient cistern region.
The ST approach provided good exposure of the inferior portion of the cistern and of proximal segments of the PCA. After the resection of the parahippocampal gyrus, the area of exposure improved in all components especially the superior area. TC approach provided the best exposure of the superior area when compared to the other approaches. The postero-lateral approaches (SC/OI) to the ambient cistern region provided similar exposure of anatomical structures. There was significant difference (p<0.05) in linear exposure of the PCA when comparing the ST/TC, and ST/SC approaches.
This study has demonstrated that surgical approaches expose dissimilarly the different regions of the ambient cistern and approach selection should be based upon the specific need of anatomical exposure.
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 23 February 2016.
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