Objective To investigate the applied value of multi-slice CT(MSCT) in diagnosis of hip trauma.Methods The volume scans according to conventional pelvic scan were performed in 26 cases with hip trauma by SIEMENS Sensation 4 MSCT,then the images in thin slice of low and high contrast were reconstructed.After that,all the source images were transfered into CT 3D work stations,images such as multiplanar reconstructions(MPR).Maximum intensity projection(MIP), surface shade display(SSD) and volume rendering technic(VRT) were obtained. All images were observed and analysed by two radiologists.Results All post process images that obtained from the MSCT showed 19 patients with acetabular fractures ,8 with femoral head fractures ,7 with hips dislocation and 5 with piece of fracture in the hip joint. MSCT 3-dimension imaging could produce clear and comprehensive images of hip fracture and dislocation or piece of fracture .The rate of displaying hip trauma with thin slice MPR and MIP was 100%.Conclusion The MSCT thin slice MPR imaging is the best noninvasive imaging method in showing the hip joint. It is of high value in diagnosis of hip trauma in clinical practice.

Objective To study image findings of nonossifying fibroma.Methods The pathological and image findings fo 22 cases of nonossifying fibromas proved by operation were analysed.There were 12 cases of male and 10 cases female,with age ranging from 10 to 35 years(mean age 17 years).X-ray plain films were obtained in all 22 cases,CT images in 7 cases,and MRI in 2 cases.Results The tumors were located in long bone in 19 cases,in which 14 cases were located in metaphyses,2 cases in diaphyses and 2 cases in bone end,and 4 cases in irregular bone,which was seen in clavicle,rib,illum and maxilla respectively.The tumor maximum diamneter ranged from 2 to 6.5 cm,with mean diameter of 3.2 cm,and the ratio of longitudinal to transverse diameter was 2.51.The tumors were round,oral or mild lobular in 17 cases.The tumors were showed sclerotic borders in 20 cases,and no sclerotic border in 2 cases(clavicle and rib).Septum was demonstrated in 19 cases.Bone expasion was showed in one case.Conclusion If a tumor is located in cortex or marrow of long or irregular bone which is showed a welldefined lytic lesion with sclerotic rim,the diagnosis of nonossifying fibroma will be considered.

Objective To investigate the diagnostic value of Multislice CT scanning in patients with acute thoracic trauma. Methods151 patients with chest wound admitted after Multislice CT scanning were reviewed and analyzed. ResultsThis group of 151 patients with chest wound after X-ray and CT inspection were as follows:lungs were damaged in 139 cases including 52 cases with traumatic wet lung,94 cases with lung rip,28 cases with lacerated wound and 7 cases with tracheal bronchial tube damage.Damages outside the lungs were found in 108 patients including 83 patients with trauma in pleural membrane(hemothorax 27 cases,pneumothorax 32 cases and blood pneumothorax 24 cases),mediastinum damage in 9 cases(vertical mediastinal pneumatosis 6 cases,hematocele 4 cases and traumatic disphragmatic hernia 2 cases),thoracic wall damage in 76 cases(rib bone fracture 59 cases,breast bone fracture 18 cases and costal cartilages damage 5 cases).Clavicle and scapula fracture in 31 cases. ConclusionMultislice CT scanning was principal method for the diagnosis of chest wound,it had the advantages of scanning range,quick scanning and characteristics of high sensitivity,and it would certainly play a vital role in first aid process in emergency medical treatment of wound.

Objective:To analyze the influencing factors, prevention and treatment strategy of short-term poor prognosis of continuous lumbar cistern external drainage after aneurysms subarachnoid hemorrhage (aSAH).Methods:Used retrospective research method, the clinical data of 300 patients with aSAH combined with continuous lumbar cistern external drainage treated in Sanya Central Hospital (Hainan Third People′s Hospital) from March 2019 to March 2021 were selected as the training set. In addition, the clinical data of 144 patients with aSAH with continuous lumbar cistern external drainage treated in Sanya Central Hospital (Hainan Third People′s Hospital) from March 2017 to May 2019 were selected as the verification set. According to the results of postoperative follow-up, the patients in the training set were divided into two groups: good prognosis group ( n=208) and poor prognosis group ( n=92). The demographic characteristics, past history, Hunt-Hess grade, modified Fisher grade, location of responsible aneurysm, postoperative complications, bone flap decompression and lumbar cistern drainage were compared between the two groups. The independent risk factors for prognosis of aSAH patients undergoing continuous lumbar cistern external drainage were screened by Cox proportional hazard regression model, and these factors were included and XGboost model was established. The prediction model was validated internally and externally in the training set and verification set: AUROC(C-index) was used to verify the model differentiation; GiViTI calibration band and Hosmer-Lemeshow test were used to verify the model calibration; DCA curve was used to verify the clinical validity of the model. Results:Hunt-Hess grade, modified Fisher grade, drainage duration, average daily drainage volume, shunt-dependent hydrocephalus, aneurysm rebleeding, cerebral vasospasm and delayed cerebral ischemia were independent risk factors for poor prognosis in patients with aSAH who underwent continuous lumbar cistern external drainage( P<0.05). The XGboost model was successfully established by incorporating the above independent risk factors, and the internal and external verification of the XGboost model was carried out in the training set and verification set, respectively, the area under the curve of receiver operating characteristic was 0.882(95% CI: 0.820-0.955) and 0.878(95% CI: 0.774-0.928) respectively, and the model differentiation was good; the 80%-90% confidence interval of the GiViTI calibration curve did not cross the 45° angle bisector ( P>0.05). In the Hosmer-Lemeshow goodness-of-fit test, the P value were 0.581 and 0.716, respectively. The threshold probability value in the DCA curve was 30.4%. The clinical net benefit rate of the training set and verification set were 31% and 34%, respectively, indicating that the prediction model was clinically effective. Conclusions:The independent risk factors for poor prognosis of aSAH patients undergoing continuous lumbar cistern drainage are Hunt-Hess grade, modified Fisher grade, cerebral vasospasm, delayed cerebral ischemia and shunt-dependent hydrocephalus. The XGboost model constructed in this study can effectively predict the prognosis of patients with aSAH undergoing continuous lumbar cistern drainage, and provide reference for the formulation of follow-up treatment plans.

Animals ; Carrier Proteins/metabolism* ; Histidine/metabolism* ; Humans ; Methylation ; Methyltransferases/metabolism* ; Neoplasm Proteins/metabolism* ; Neoplasms/metabolism* ; Protein Processing, Post-Translational