Study on the optimal combination parameters for volume rendering technique with multislice spiral CT / 中国基层医药

ABSTRACT

Objective To evaluate the ability of two sets parameters of the volome rendering technich(VRT)with multislice spiral CT(MSCT)to display the normal inner ear.Methods Fifty-eight inner ears of twenty-nine healthy volunteers were scanned and reconstructed with VRT.The images of VRT were recombinated with two sets(A,B)of parameters.Results The semicirculares、cochlea,vestibule,fenestra cochleae and vestibuli of inner ear could be visualized clearly by VRT images with"A"group's parameters.The vestibuli was displayed unsharply by VRT images with"B" group's parameters.Conclusions The double-threshold segmentation matching with manuleditor of VRT was successfully used to separate the inner ear from the temporal bone.And the semicirculares,cochiea,vestibule,fenestra cochleae and vestibuli of inner ear could be displayed clearly by VRT images of"A"group's parameters(threshold256～765,935～1019,brightness42,opacity70).