0.05).84.58%(28/33)of the expanding bone destruction were resulted from benign and 84.62%(33/39) of the aggressive bone destruction were resulted from malignant.The form of bone destruction of maxillary sinus in the benign and the malignant was different(? 2=34.61,?

[Objective]To discuss the diagnosis,treatments and the outcome of anterior spinal artery syndrome induced by cervical disc herniation.[Methods]Eighteen patients(male 13,female 5,average age 35.6 years old) were diagnozed to experience cervical disc herniation by MRI scans.All the patients presented with severe motor paralysis with loss of sensation to pain and temperature but sparing of proprioceptive sensation,which was just like the clinical features of anterior spinal artery syndrome.The average preoperative JOA score was 7.6 points,ranged from 4 to 10.Anterior cervical decompression with fusion was performed on 17 patients within 15 days.Spinal canal occupation was found in 1 case.Posterior approach treatment was not effective and anterior approach decompression was performed 1 year later.[Results]All these patients were followed up for an average of 15 months(12 to 24 months).Seventeen patients had a good outcome.The postoperative JOA score ranged from 7 to 15 points(13.4 in average) and the mean JOA recovery ratio was 61.7%.All the patients recovered with no complication.[Conclusion]A herniated cervical disc can compress the spinal anterior artery and involve with anterior spinal artery syndrome.It can be final diagnozed with clinical features and MRI scans.The outcome is satisfactory when an early and complete anterior decompression with fusion is performed.

Objective To explore the value of spectral curve in the differential diagnosis of benign and malignant tumor of the musculoskeletal system.Methods 100 patients with mass of the musculoskeletal system which were found by MRI underwent Dis-covery HD750 Gemstone CT scan ,and the images acquired were processed.Areas with homogenous density which did not contain necrosis,cyst,hemorrhage and calcification were chosen as region of interest(ROI).The optimal Kev on single energy images was selected,then the Kev-CT curve was automatically generated.All 100 patients proved by histological examination were divided into four groups,38 cases were as group A with benign tumor,10 cases as group B with borderline tumor,49 cases as group C with ma-lignant tumor and 3 cases of lipoma(that were analyzed separately since its curve was arc shaped).Average slope rate of every group was calculated according to the formula:K=(HU40keV-HU80keV)/40.Kruskal Wallis test was applied for statistical analysis,P value of less than 0.05 was considered statistical significant.Results The spectral curve of group C was sharply falling type with a mean slope rate of 1.64±1.00,that of group A was gradually falling type with a mean slope rate of 0.75±0.30,and that of group B was 1.34±0.45.The difference of slope rate between group A and C and between A and B were of statistical significance(P<0.05).The spectral curve of 3 lipomas showed arc shaped rising type with a mean slope rate of-2.00.Conclusion Spectral curve is useful in the differential diagnosis of benign and malignant tumor of the musculoskeletal system.Arc shaped curve is a specific sign for tumors containing abundant fat.

Objective To collect the URL of Chinese and English periodicals and medical seraching engines,sum up the methods and procedures of getting radiolgical literature from the Internet.Methods To search URL with a computer connected to the Internet,by software of Internet Explorer and searching engines known.Results The URL of 21 English and 11 Chinese radiological perodicals,14 searching engines,4 medical databases were obtained,which can be used to find the abstract and full text of the articles we want from the internet.Conclusion To obtain radiological literature from the internet can be easy,convenient,rapid and economical.

Objective To study the value of 3D-CT reconstruction in the diagnosis of surface involved lesions of bone for its nature and location,comparing with plain film and 2D-CT.Methods Surface-involved lesions of bone revealed by plain-film were performed spiral CT examination.Multi-planar reconstruction(MPR)and surface shading display(SSD)were performed among 20 cases which had pathologic results.The diagnosing correct rate of nature and location in all the techniques were compared.Results The correct rate of nature diagnosing of plain film,2D-CT,MPR and SSD was 75%,80%,65%,60% respectively;correct rate of location diagnosing was 90%,75%,85%,95% respectively.The highest nature diagnostic correct rate was found in 2D-CT.The highest location diagnostic correct rate was found in SSD.Conclusion Spiral CT stereoscopic reconstruction is of great value in the location diagnosing of surface-involved bone lesion.

Objective To study the method and ability of multi-slice CT isotropic scan and post-processing in displaying the anatomy of cervical vertebrae.Methods The normal cervical spines in 53 cases were scanned with isotropic parameters using 16-slice-helical CT.All the images were post-processed with the methods of MPR,MIP,SSD and VRT and each other were compared between them,then the best one was selected to compare with axial CT images and plain films.The abilities in displaying inter-vertebrae disc,spinal canal longtitude,vertebrae body,vertebral arch,zygapophyseal joint and inter-vertebrae foramen were compared among the 3D reconstruction,direct CT scan and X-ray plain film including post-anterior,lateral,left-anterior oblique and right-anterior position project.Results The quality of isotropic post-processing images had no remarkable differences with that of direct CT scan in showing inter-vertebrae disc,but it was better than X-ray plain film and conventional CT scan mode in showing other structures.Conclusion The multi-slice helical isotropic CT scan and post-processing images are of great value in the study of cervical spine.

Objective To investigate clinical value of transurethral bipolar plasma cutting and transurethral resection for benign prostatic hyperplasia,to provide a reference for clinical treatment.Methods 100 cases with benign prostatic hyperplasia were selected,according to surgical treatment,they were divided into control group and observation group.50 patients in the control group received TURP surgical treatment,50 patients in the observation group were given TUPKP surgical treatment.The patients were followed up for 3 months,the indwelling catheter time, weight and other clinical indicators of glandular tissue were compared,serum sodium and hemoglobin levels were observed,the quality of life index,international Prostate Symptom Score,complications and other indicators were compared. Results In the observation group,operative time was (60.54 ±8.37)min,blood loss was (108.43 ±21.27)mL, hospital stay was (7.09 ±2.25)d,which were shorter than those of the control group (70.24 ±12.22)min,(188.76 ± 21.36)mL,(8.63 ±2.76)d,the differences were statistically significant (t =5.441,P =0.012;t =8.326,P =0.001;t =6.216,P =0.006).In the observation group after three months,maximum flow rate was (18.95 ±4.11)mL/s, residual urine volume was (28.74 ±4.55)mL,IPSS was (5.12 ±1.27)points,QOL was (1.43 ±0.24)scores, which were better than those of the control group (14.24 ±3.77)mL/s,(20.85 ±5.11)mL,IPSS(6.95 ±1.44)points, QOL(2.03 ±0.32)points,the differences were statistically significant (t =8.763,P =0.000;t =7.616,P =0.003;t =5.472,P =0.011;t =8.044,P =0.002).The incidence rate of complication in the observation group was 10.00%, which was significantly lower than 22.00% in the control group,the difference was statistically significant (χ2 =5.437,P =0.012).Conclusion TUPKP treatment for benign prostatic hyperplasia has significant clinical effect, which can effectively improve the clinical symptoms and quality of life with good safety,it is worthy of clinical application.

ObjectiveTo explore the radiological features of hypophosphatasia.MethodsFive cases of hypophosphatasia were definitely diagnosed,which included 3 males and 2 females aged from 5 months to 23 years.The laboratory assays were analyzed,radiological appearances of bone were determined and differential diagnoses were made.ResultsThe alkaline phosphatase in blood serum of five patients decreased,which were 8,20,13,21,and 18 U/L respectively.Phosphoethanolamine increased in blood serum of the five patients,which were 16.5,13.5,21.6,18.7,and 28.9 μmol/L respectively.Phosphoethanolamine also increased in urine,which were 2350,9120,3520,5280,and 1820 μmol/L respectively.Calcium in blood serum increased,which were 4.2,5.6,4.9,6.1,and 3.5 mmol/L respectively.X-ray images displayed that the density of bone decreased in 5 cases,the metaphyses exhibited widening and cupping in 4 cases,the provisional calcification zone of the metaphysis became thinning or disappearing in 4 cases,long bone bended in 4 cases and pathologically fractured in 1 case.Conclusion Hypophosphatasia can be indicated by its relatively special radiological appearance,and it can be diagnosed and differentiated from rickets,osteomalacia and osteogenesis imperfect by the laboratory examination combined with its clinical presentation.

Purpose　The aim is to study the pharmacokinetic of iv thymopeptide in rabbit.Method　Thymopeptide concentration of rabbit plasma was determined by HPLC and pharmacokinetic parameters were computerized with 3P87 program.Results and Conclusions　The pharmacokinetic parameters of iv thymopeptide in rabbit were:Cmax=(30.06±9.27)μg/ml,t1/2(β)=(29.24±23.78)min, Ke=(0.032 3±0.013 8)min-1 and AUC 0→∞=(205.63±46.48)μg*min/ml.

Objective To discuss the diagnostic value of parasagittal reconstruction CT for the lumbar intervertebral foraminal stenosis.Methods From Jan.2003 to Apr.2004,15 suspected cases with lumbar intervertebral foraminal stenosis based on the routine clinical and radiologic examinations were diagnosed by means of the CT parasagittal reconstruction and operated on .Results All showed L_(4~5) or L_5~S_1 foraminal stenosis,2 cases far lateral disc protruded,8 cases the vertebral endplate posteriolateral spurs extruded into foramina,1 spondylolisthesis pseudoarthrosis pressed,4 cases had the narrow intervertebral space along with the flavum ligament hypertrophy and facet superioanterio subluxation. 7 cases showed horizontal stenosis and 8 cases showed vertical stenosis.6 cases wereⅡ?,9 cases were Ⅲ?. Conclusion The parasagittal reconstruction CT for the lumbar foraminal stenosis can compensate for the drawbacks of the routine axial CT, show more clearly and vividly and guide the operations more accurately.