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Purpose To explore the value of direct CT venography (CTV) for the diagnosis of varicose veins of lower limb. Materials and methods Forty patients diagnosed as varicose veins of lower limbs were enrolled. 40 patients with 56 involved limbs underwent direct CTV examination, and their images were stratified and evaluated according to the severity and the scope of the disease. Main assessment:definition and scope of CT axial scans combined with volume rendering (VR) and maximum intensity projection for the display of the varicose veins; situation for the display of perforating veins, deep veins and iliac veins;diagnostic compliance between CTV and DSA. Results All of the 56 involved limbs underwent laser intra-cavity occlusion surgery, among them 7 cases with 11 limbs underwent venous angiography under DSA at the same time. In the evaluation of the VR, excellent proportion was 92.86%(52/56), moderate proportion was 7.14%(4/56). Among the deep veins, ratio of the imaging that was able to meet the diagnostic standard was 94.34%, 88.46%and 27.27%, respectively for calf vein, femoral vein and external iliac vein. The total demonstration rate of perforating veins was 98.21%(55/56). Diagnostic compliance between CTV and DSA was 100.00%. Conclusion Lower extremity direct CTV imaging is convenient and noninvasive for patients with varicose veins, with high compliance with DSA results, thus is significantly valuable for the guide of clinical treatment.
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OBJECTIVE@#To provide the clinical anatomic data of the lingual artery with 3D CT reconstruction.@*METHOD@#Ten healthy subjects were recruited. Spiral CT scan ranged from the sternoclavicular joint to the lower edge of the orbit and the data was subjected to three-dimensional reconstruction. The distance from the origin of the lingual artery to the bifurcation of the common carotid artery and tip of the greater horn of hyoid bone were measured respectively and the distance between the midline of the lingual artery and the midline of tongue were also measured.@*RESULT@#The horizontal distance between starting level of lingual artery to the level of the hyoid horn tip was (1.51 +/- 0.35) cm. The horizontal distance between the level of the lingual artery to the carotid bifurcation was (0.95 +/- 0.31) cm. The comparison of the distance from lingual artery 1 cm anterior or posterior to foramen cecum to midline of tongue showed (t = 45.27, P < 0.01) a statistically significant difference.@*CONCLUSION@#The lingual artery could be demonstrated clearly in 3D reconstruction. To ensure the operative safety, the depth of radiofrequency for OSAHS at the tongue base should be limited within 2 centimeters.
Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Young Adult , Arteries , Carotid Artery, Common , Carotid Artery, External , TongueABSTRACT
Objective To assess the clinial application of 3D reconstruction with MSCT for acetabular fractures.Methods Volume scanning was performed in 20 patients with acetabular fractures,all data sets were transferred to workstation.Reconstruction were done with more thinner slices.Results Acetabular frature 3D images went all the way with the results of surgery in 17 cases.Conclusion MSCT 3D images can compare beauty with gross specimen,which could be propitious to the subtype of acetabulum fracture and have an advantage in the application.