ObjectiveTo investigate the application of 64\|row 128\|slice VCT in the inspection techniques and all kinds of post\|processing techniques of CTA in intracranial and cervical arteries to increase the two\|dimensional(2D)and three dimensional(3D)display rate of vessels and the detection rate of lesions.Methods(1)153 cases suspected intracranial and cervical arteries disease were collected,in which 60 patients scanned by small doses pre\|experiments(Test injection software)were divided into group A and group B with 30 patients in each group.Regular CTA(only contrast\|enhanced VCT scanning)were performed in group A.Digital subtraction CTA(non\|contrast and contrast\|enhanced VCT scanning)were performed in group B.The other 93 patients were performed with digital subtraction CTA scanning.(2)After scanning,the image post\|processing of multi\|planar reformatting(MPR),curve planner reconstruction(CPR),maximum intensity projection(MIP),volume rendering(VR),virtual endoscopy(VE)were used to evaluate the 3D imaging quality of vessels and discuss the value of post\|processing technology.Results(1)Intracranial and cervical arteries were all displayed in group A and Group B,but the images quality in Group B was better,the difference between Group A and B had statistical significance.(2)MPR could display images of axial,sagittal,coronal,arbitrary oblique and also could change the location and thickness of the reconstruction make it easy to observe some tiny blood vessels.VE could display the tear and range of dissection from internal vascular.CPR could clearly display the stenosis,occlusion,calcification and bifurcate position of vessels.MIP could reflect the true CT values of carotid artery and the internal lesions of vessels.VR technique could obtain true 3D images of intracranial and cervical arteries and display the shape,position and relationship of the vessels.ConclusionTest injection scanning software and digital subtraction CTA technology are simple and fast;Combined MPR,CPR,MIP,VR,and VE technology can obtain satisfactory images.Key Words:64\|rows 128\|slice VCT;Angiography;Conventional CTA;Digital Subtraction Angiography CTA;Imaging techniques
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