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Objective:To evaluate the value of CT angiography (CTA) for vertebral artery (VA) injury in the transverse foramen region of cervical vertebra.Methods:The clinical and CTA imaging data of 56 patients with cervical spine trauma in People's Hospital of Yuxi City from January 2016 to December 2019 were retrospectively analyzed. To observe the VA were or not injuried and their degrees, and the relationship between fracture in transverse foramen region and injured of the VA by applying post processing techniques such as volume reconstruction (VR), image fusion, curved planar reconstruction (CPR), multi-planar reconstruction (MPR), vascular analysis and so on.Results:There were 35 cases in the positive group of transverse perforation stenosis among the 56 patients, and 21 cases in the negative group. There were 19 cases injuried the VA in the positive group of stenosis, but just 5 cases′VA were injuried in the negative group of stenosis, with statistically significant differences ( P<0.05). The risk of VA injuried caused by different degrees of transverse perforation stenosis in the positive stenosis group was statistically significant ( P<0.05). The VA damaged distribution were: 3 cases in V1 segment, 16 cases in V2 segment, 5 cases in V3 segment. The degree of luminal stenosis were: 9 cases of mild stenosi, 7 cases of moderate stenosis, 5 cases of severe stenosis, and 3 cases of luminal occlusion. Conclusions:The CTA of VA can clearly show its anatomical route, degree of injury, range and its adjacent relationship with the fracture end of the transverse foramina of cervical vertebra, which can provide evidences of objective and reliable imaging for spinal surgeons to assess their conditions and select the treatment plans.
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Objective To analyze the CT imaging features of pulmonary sclerosing haemangioma(PSH),so as to improve the level of the diagnosis of this disease.Methods Retrospectively analyzed the Multi-slice spiral computed tomography(MSCT) imaging data of 13 cases of PSH with who confirmed by surgical pathology,all cases were performed CT with non-enhanced scaning and enhanced.Results 13 patients' average age was 42 years old,including 10 female,accounted for 76.92％ (10/13).All the nodules or masses of the 13 cases were single,long diameter was 0.6-5.0cm,all tumors presented as round or oval shaped,clear boundary.1 case with calcifications in 13 cases,2 cases with air meniscus sign,and 2 cases with halo sign around.Contrast-enhanced:10 cases were enhanced homogeneously,3 cases were enhanced heterogeneously and with vessel marginating sign,1 case of lymph node was enlargement in mediastinal.Conclusion PSH mainly more shows at middle-aged women,it has relative characteristic of CT imaging within non-enhanced scaning and enhanced.Therefore,a comprehensive analysis of these CT features can help to improve the accuracy of diagnosis.
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Objective To explore the CT imaging features of solid pseudo- papillary tumor of pancreas (SPTP) and the diagnostic value of dual-enhanced scanning in SPTP. Methods CT imaging data of 38 cases with SPTP confirmed by surgical pathology were retrospectively analyzed, among whom there were 20 cases who had underwent dual-phases enhanced scanning and 18 cases who had underwent three-phases enhanced, the CT imaging features of the tumors,enhancement degree and the enhancement peak phase of tumors′solid composition were observed. Results All the tumors were single.Tumor located in the head of pancreas in 14 cases, in the neck in 4 cases,in the body in 8 cases, in the tail in 7 cases, in the body-tail of border in 4 cases,and 1 case in the head-neck of border.The size of tumors was 2.4+7.8 cm;tumor of 12 cases was solid mainly,of 24 cases was solid and cystic,and of 2 cases was cystic mainly. Enhancement was uneven. The solid composition showed mild-to-moderate reinforcement, and the enhanced peak stage was in portal vein phase or delay phase.Conclusions There are some characteristics in CT imaging findings of SPTP, CT imaging combined with clinical characteristics can make an accurate diagnosis before operation. The diagnosis accuracy of SPTP with MSCT through dual- phases enhancement scaning and the three- phases enhancement shows no difference,and the former scaning technology can reduce the received effective radiation dose of patients and improve the efficiency of examining.It is worth of promoting.
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Objective To explore the suitable delayed time of MSCT mesenteric venography and to probe the value of different post-processing methods.Methods 49 patients with abdominal pain (group A)underwent MSCT mesenteric venography with a delayed time of 15-20 s after the arterial phase,and the CT showed the mesenteric vein(MV)was normal.Meanwhile,other 49 ones with abdominal pain (group B)underwent conventional biphasic CT with a delay-time of 35 s after arterial phase.The CT value and diameter of superior mesenteric vein between two groups were compared,and the grading,scoring and display of mesenteric vein with different post-processingmethods were assessed.Results The diameters of SMV were (10.52±2.19)mm in group A and (9.88±2.60)mm in group B,exhibiting no statistically significant difference (P >0.05);Meanwhile the average attenuations of SMV were (1 96.55±40.59)HU in group A and (1 64.32± 28.35)HU in group B,exhibiting a statistically significant difference (P<0.05).In addition,the display ability and scoring of mesenteric vein and its branches on volume rendering (VR)in group A were better than those in group B (P <0.05).VR was better in display of the vascular space distribution than maximum intensity projection (MIP)and sliding thin slab maximum intensity projection (STS-MIP),the STS-MIP was better in display of tiny blood vessels than VR and MIP,and the curved planner reformation (CPR)was superior in display of vascular lumen and the relationship with adjacent structures.Conclusion The image quality of mesenteric vein with the delayed time of 1 5-20 s after arterial phase is superior to that with delayed time of 35 s,and different advantages of the post-processing methods are showed in display of MV.