NetWare 4.11 edition of Novell being an example, this paper introduces the foundation, software installation and authority setting of Novell local area networkLAN from such aspects as basic request of server and workstation hardware, network topology, preparation of software installation for server, installation of Netware, exit from server console, fixing of workstation software and setting of user authority. And the Novell LAN adopts the layout standard of Ethernet network and working model of client-server, which has several advantages including low request for hardware, great capability in fault toleration, flexible configuration and strong reliability and stability.

Purpose:To analyze the CT appearances and diagnostic value of inflammatory pseudotumor of the liver(IPL)_O Materials and Methods: The CT findings of 19 patients with inflammatory pseudotumor of the liver proved by pathology were analyzed respectively.Results: 17 cases were solitary lesion and 2 cases had multiple lesions.19 lesions showed hypodense,2 lesions isodense on pre-contrast.On the contrast CT scan,showed no enhancement during arterial phase,but during portal venous phrase and delayed phase,strong enhancement at the edge and septa in the center or mural node,of the lesions were visible.Conclusion: CT diagnosis is possible in most cases of IPL by three phase dynamic scanning.

Purpose:Analysing the imaging performance of solitary plasmacytoma of spine,to raise the awareness and the diagnosis accuracy.Materials and Methods: Five cases of spinal solitary plasmacytoma confirmed by clinical pathology were retrospectively analysed,to sum up the imaging performance characteristics.Results: All lesions were single vertebra involved,3 cases in thoracic and 2 cases in lumbar,3 cases occurred vertebral compression fracture.X-ray and CT showed osteolytic destruction,expansive growth and soft tissue mass,MRI showed diversity of signals,and remarkable enhancement after contrast injection.Conclusions: X-ray presents lower diagnostic sensitivity,but contributes to exclude multiple myeloma.CT and MRI can depict the morphological features and extent of tumor regions definitely,CT shows better than MRI on the thickening trabecula and residual bone in the tumor,MRI can provide a lot of information for plasmacytoma,including the diagnosis,identification and staging,which is considered as the best imaging diagnostic methods of plasmacytoma.

Purpose:To explore the value of MSCT-3D in stomatology through comparing with COPT.Materials and Methods:Both MSCT 117 patients and COPT 117 patients in stomatology were selected at a particular period,COPT imaging was using computed post-processing,MSCT imaging was processed according to 3D information through work station,then to analyze the imaging results according to metal tooth、damaged tooth and broken tooth,later to compare the photograph 、the technique of computed post-processing、the photograph condition and exposure of MSCT and COPT.Results:Normal COPT patients were 9 cases ( 0.24% ),normal teeth were 3160 (84.4% ),unusual teeth were 551 (15.6%),normal MSCT-3D patients were llcases ( 0.29% ),normal teeth were 3138 (83.8% ),and unusual teeth were 606 (16.2% ).COPT belonged to COPT photograph,the emphasis was 2D,MSCT-3D belonged to spiral photograph,the emphasis was 3D,and MSCT imaging could be processed according to 3D reformation.The 3D effect of MSCT was batter than that of COPT.The radiation dosage was much higher than that of COPT.Conclusions: COPT could get 2D effects: MSCT-3D could improve 3D results on 2D basis,but the radiation dosage of MSCT is much higher than that of COPT in stomatology.

Purpose:To assess MRI and MRS features of intracranial hemangiopericytoma.Materials and Methods: The imaging data of MRI and MRS were analyzed retrospectively with seven cases of hemangiopericytoma.MR examinations were performed on seven cases,MRS on 4 cases.Results: The position of lesions were all located at the supratentorial area and extraaxial region.Six masses were lobulated in shape.Of seven cases,3 cases were isointense with cortical gray matter,3 iso- and hypointense,l hypointense with localized hyperintense resulted from hemorrhage on T1WI: 2 cases demonstrated isointense with cortical gray matter,4 iso- and hyperintense,1 complex hyperintense on T2WI.Five tumors had prominent internal or surficial serpentine signal voids.3 tumors showed homogeneous marked enhancement,4 heterogeneous enhancement.MRS of four tumors showed marked elevated Cho peak,Lip peak and diminished or disappeared NAA peak.Two cases were companied with marked elevated MI peak.Conclusion:The MR imaging findings of hemangiopericytoma has some characteristics,which can help differentiation from meningioma combined MRS.

Purpose:The efficacy of evaluation of changes of tumoral uptake of 3'-deoxy-3'-[~(18)F] fluorothymidine (FLT) was comparatively analyzed with that of ~(18)F-FDG at early stage after anticancer chemotherapy.Materials and Methods:Cells derived from human lung adenocarcinoma were incubated with cisplatin (CDDP),5-fluorouracil(5-FU),doxorubicin (Dox),for 1,4,24 and 72h.The doses(CD-DP: 67 μM; 5-FU 1,540 μM;MTX: 440 μM;) were determined corresponding to a estimated 10% - 95% proliferation inhibition.The cells were allowed to recover before FLT or FDG being added into the culture media for 60 min.Cell counts,viability,estimated by MTT method,were used to evaluate the cytotoxic effects of chemotherapy.Results: FLT uptake was increased significantly at 1 and 4 h after treatment with 5-FU( 145 ± 12%,150 ± 14%,P <0.01).decreased at 24 h and 72 h.In contrast,FLT accumulation was significantly reduced at cytostatic concentrations of CDDP at different time.The uptake of FDG did not change significantly at early time points after treatment,but decreased at 72 h.Conclusion: The tumor cell uptake of FLT revealed specific changes depending on the auti-cancer drug used at much earlier time than FDG after chemotherpay.

Purpose:To discuss the function of Gd-BOPTA on the deferment of manifestation of MRI,which bring influence to the immune mensuration of antigen PCNA,PTEN.Materials and Methods:Scanning with MRI on the 35 patients with pathologically verified HCC the image were analyzed concretely.Pathologic diagnose was made with Edmondson pathologic classification standard,and it was expressed with index of PCNA and PTEN of immune quantitative analysis.Results: HCC was negatively related to the index of PCNA,and most patients with high index were lightly or not deferred enhanced(13/16),Patients with low index were evidently enhanced ( 10/19).The degree of HCC deferred enhancing was positively related to the expression of PTEN.Most HCCs( 15/17) with negative PTEN were lightly or not deferred enhanced,while positive patients of PTEN were mostly enhanced obviously(11/18).Conclusion: Deferment of Gd-BOPTA can be used to basically estimate the tincture of tumor biology,therefore,the enhanced degree of which,the PCNA,PTEN,can offer great help in choosing the therapuetic method and estimating the outcome of the the therapy.

Purpoes: To discuss the MRI manifestation and classification of discoid lateral meniscus and improve the accuracy of MRI diagnosis for discoid meniscus.Materials and Methods: 70 cases of discoid meniscus verified by arthroscopy were divided into impuberal group(n=30) and adult group (n =40).Following three quantitative parameters were measured.The meniscal width and tibial plateau width on the coronal slice showing the inttercondyloid spine( a),the number of the spine showing butterfly change when the layer thickness was 4mm(b) and the maximum width showing butterfly change on the sagittal slice(c).The discoid meniscus were classified as slab type (n=33),wedge type(n = 19),hypertrophied - horn type(n= 18) according to their shape.Results:69 cases had torn in different extent,a>or =20% (P<0.01) in all of cases.No significant difference in the incidence of each type existed between two groups(P>0.05).Significant difference in the incidence of each type existed in c(P<0.05).Conclusions: a >or = 20% is the most reliable criterion to diagnose discoid meniscus.Using b as the criterion of discoid meniscus is easy to occur missed diagnosis,c in the wedge type is bigger than the one in the hypertrophied type.Age can impact the classification of discoid meniscus.

Purpose:To evaluate the role of multi - detector row CT(MDCT) using reconstruction techniques in the assessment of patients with obstructed diseases of biliary tract.Materials and Methods: 47 Patients with obstructed diseases of biliary tract confirmed clinically underwent MDCT and their reconstructed images of biliary tract including multi-planar reconstruction (MPR) images and curved planar reconstruction(CPR) images were compared with those of 50 patients without obstruction and dilatation of biliary tract.The display effect of biliary duct structure and biliary duct wall and the display ability of biliary tract by MPR and CPR images between the 2 groups were compared and analysed.The reconstruction images of biliary tract were analysed retrospectively to evaluate the location and possible causes of biliary obstruction.Results: The display effect of biliary duct structure and biliary duct wall in MPR and CPR images of the group with biliary obstruction is better than that of control group,and the display ability of biliary tract in CPR images of the group with biliary obstruction is also better than that of control group.The accuracy of localization and cause evaluation of obstruction by MPR and CPR images is 100% and 89.4% respectively.Conclusions: The MPR and CPR images of MDCT provide a good display of biliary duct structure,biliary duct wall and an accurate evaluation of obstruction localization.The reconstruction technique of MDCT such as MPR and CPR should be widely applied in the evaluation of biliary obstruction.

Purpose:To discuss the MRI features and differential diagnosis of hemangioblastomas in the central nervous system.Materials and Methods: The MRI features of 22 patients with hemangioblastomas confirmed histopathologically were analyzed retrospectively.Results: In this group there were 50 lesions in 22 patients.Multiple lesions were revealed in 5 cases.The lesions located in the cerebellar hemisphere and vermis ( n = 40),medulla oblongata and spinal cord ( n.= 9 ),cerebral hemisphere ( n = 1).Among the 50 lesions,12 appeared as a large cyst with mural nodule,36 as a solid mass,2 as a simple cyst.Of large cyst with mural nodule lesions,the content of the cyst was hy-pointense signal on T1WI,and hyperintense signal on T2WI.The mural nodules were slightly hypointense signal or isointense signal on Tl WI,and hyperintense signal on T2WI.The solid masses were isointense signal on Tl WI,slightly hyperintense signal and hyperintense signal on T2WI.On contrast enhanced scans,all mural nodules and solid tumors were showed marked homogeneous enhancement.On PWI the mural nodules and solid tumors were demonstrated marked hyperperfusion.Conclusion:Hemangioblastomas have distinctive manifestation,MRI enhanced scans and PWI play an important role in the diagnosis and differential diagnosis of hemangioblastomas.