OBJECTIVE: To evaluate the applicative value of multimodal navigation combined with intraoperative magnetic resonance imaging system in the treatment of complex lesions of middle skull base. METHOD: Nineteen consecutive patients undergoing complex lesions resection using multimodal microscopic navigation combined with iMRI were included. Preoperative radiological images were imported into navigation planning system, based on which approach and microsurgical window were designed. Transcranial approach and extracranial approach(include trans-oral-nasal-sphenoidal approach and transsphenoidal approach) were performed in our series. After presumptively total resection were finished, intraoperative magnetic resonance (iMRI)were performed, followed by navigation images updating, and continuing resection if necessary. RESULT: iMRI scan were performed from 1 time to 2 times. In 5 cases with residual seen on iMRI scan, continued resection were carried on in 2 of them. There was no iMRI-associated complications. CONCLUSION Microscopic-based neuronavigation, in combination with intraoperative magnetic resonance, could provide objective basis for resection, and improve the safety level of tumor resection.
Adult ; Aged ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Microsurgery ; methods ; Middle Aged ; Neurosurgical Procedures ; Skull Base ; surgery

Objective To evaluate the reliability and accuracy of three-dimensional digital fusion anatomy in the preoperative evaluation and therapeutic strategy choice of intracranial tumors.Methods MRI scan,including regular MRI,MRA,MRV and DTI,were performed in 87 case.Then tumor themselves as well as tumor-associated structures were reconstructed and fused through iPlan 2.6 software.Based on the reconstructed images,therapeutic strategy were established,preoperative and intraoperative imags were compared.Results The digital reconstruction were successfully finished in all cases.Meanwhile,digital images,originally radiological images and actual images matched well.No approach-associated complication were met in our series.Among tumors in the convexity,the relationship of the reflux veins and the tumors were divided into three types:anterior(12 cases),posterior(19 cases) and overriding(3 cases).All of the relationships were seen in the preoperative fusion image,and the veins were all effectively protected during operation.The tumor-associated arteries could be pushed or wraped by the tumors,and the three-dimensional fusion image could provided their virtually aberrant pathway as well as their relationship with tumor.During microsurgical managment of tumors in the deep brain parenchyma,safe approach were found with the help of comprehensive understanding of the tumors and their adjacent structures.Conclusion Three-dimensional digital fusion anatomy can vividly and accurately display full rang of information about the tumor,and facilitate tumor treatment safely.

OBJECTIVETo study the polysaccharides contents and monosaccharide compositions in parent root, daughter root and rootlet of Aconitum carmichaeli.

METHODThe conversion coefficient of A. carmichaeli polysaccharide to glucose was obtained by refined polysaccharides, and then the contents of crude polysaccharides in parent root, daughter root and rootlet were determined by sulfuric-phenol spectrometry method; analysis of monosaccharide compositions in polysaccharides from A. carmichaeli was carried out by pre-column derivatization high performance liquid chromatography with 1-phenyl-3-methyl-5-pyrazolone (PMP).

RESULTThe contents of polysaccharides in parent root, daughter root and rootlet were 22.02%, 33.53% and 6.10%, respectively. Parent root, daughter root and rootlet mainly contained glucose, and in addition they contained a small amount of galacturonic acid, galactose and arabinose. Daughter root contained mannose yet, and rootlet still contained mannose, rhamnose and xylose.

CONCLUSIONThe method is simple, rapid, and accurate. The content of polysaccharide in rootlet is lowest, and monosaccharide compositions in rootlet are significantly different from parent root and daughter root.

Aconitum ; metabolism ; Magnetic Resonance Spectroscopy ; Plant Roots ; metabolism ; Polysaccharides ; metabolism ; Reproducibility of Results