Objective To explore feasibility of monitoring the extremital arterial blood supply and venous blood circulation in rabbits with replanted limb by Na~(99m)TcO_4 trace imaging(TTI). Methods TTI was performed on 6 normal control rabbits and 30 rabbits with replanted limb at 24～36h after replantation. The radioactivity uptake ratio of replanted limb/normal limb(T/NT) was analyzed. Imaging was classified into ?,Ⅰ,Ⅱand Ⅲ scales according to the accumulation amount of extremital radionuclide. Then an exploratory operation was performed on each rabbit. Results Rabbits with ?,Ⅰ,Ⅱand Ⅳ scales had 8,6,15(including 6 normal control rabbits),and 7 animals, respectively, and their T/NT were 0.178?0.072, 0.461?0.046, 0.816?0.074, 1.14?0.086(P1.05) may serve as a qualitative and semiquantitative diagnostic standard for venous blood circulation block. Conclusion TTI was feasible in monitoring the extremital arterial blood supply and venous blood circulation in patients with replanted limb(finger).

Objective To verify the correlation between rs17118 polymorphism of xyluloknase homolog (XYLB) gene and risk of ischemic stroke in a Chinese Han population.Methods A case-control study design was used.The case group was the patients with first-ever ischemic stroke and the control group was the healthy subjects from hospital physical examination.Taqman probe fluorescence quantitative polymerase chain reaction technique was used to detect the genotype distribution of rs17118 C/A polymorphisms.Results A total of 475 patients with ischemic stroke and 483 controls were enrolled in the study.The proportion of hypertension (67.9％ vs.22.2％;x2 =292.982,P ＜ 0.001) and diabetes (24.2％ vs.7.3％;x2 =25.864,P ＜ 0.001),as well as the levels of triacylglycerol (1.649 ± 1.126 mmol/L vs.1.157 ±1.480 mmol/L;t=3.592,P＜0.001),and low-density lipoprotein cholesterol (3.499 ± 1.163 mmol/L vs.3.105 ± 0.627 mmol/L;t =-6.227,P ＜ 0.001) in the case group were significantly higher than those in the control group,but the total cholesterol level was significantly lower than that in the control group (5.144 ± 1.296 mmol/L vs.5.491 ± 1.335 mmol/L;t =4.650,P ＜ 0.001).The AA genotyp e (11.4％ vs.7.5 ％;x2 =6.136,P =0.016) and A allele (32.3 ％ vs.26.4％;x2 =8.093,P =0.005) frequencies in the case group were significantly higher than those in the control group.Multivariatelogistic regression analysis showed that after adjusting for traditional risk factors,the risk of ischemic stroke in AA genotype carriers was 1.97 times of the CC genotype carriers (odds ratio 1.971,95％ confidence interval 1.040-3.736,P=0.038).Conclusions The rsl7118C/A polymorphism of XYLB gene may be associated with the risk of ischemic stroke in the Chinese Han population.

Objective To explore the value of hydronephrosis volume measured by 64 slice CT scan, evaluating renal function in patients with obstructive hydronephrosis.Methods The patients performed with both single photon emission computed tomography(SPECT) renal dynamic imaging and 64 slice CT scan in three days were chosen, 176 cases included finally.The images of renal dynamic imaging were divided into normal renal function group, mild renal impairment group, moderate renal impairment group and severe renal impairment group according to glomerular filtration rate (GFR) measured by SPECT.At the same time, CT three-dimensional reconstruction technique has been used to measure the volume of hydronephrosis, compare the differences of hydronephrosis volume among these groups, and future analyze the correlation of hydronephrosis volume with renal GFR value.Results The hydronephrosis volume of the four groups were respectively (31.47±3.81) cm3,(83.43±7.81) cm3,(208.53±15.47) cm3 and (577.31±61.32) cm3.There was statistical significance among these groups (P<0.01),except between normal renal function group and mild renal impairment group.The volume of hydronephrosis showed positive correlations with renal GFR (r=-0.614).Conclusion The volume of hydronephrosis measured by 64 slice CT has positive correlation with GFR measured by SPECT, which could reflect renal function to some extent.

Objective To evaluate the clinical value of ~(99m)Tc-MAA imaging in patients with lower extremital posttraumatosis and postoperation(LEPP).Methods 21 LEPP patients with clinical highly suspected acute pulmonary embolism(APE) underwent ~(99m)Tc-MAA veins imaging and pulmonary perfusion imaging(PPI).Vena caval filters were inserted and thrombolysis were given in patients with big area APE and/or iliofemoral vein thrombosis indicated by ~(99m)Tc-MAA imaging.Thrombolysis was given in patients with small area APE and/or subpopliteal vein thrombosis.PPI was reexamined after 2～4weeks` treatment.The lung segments with 100% lack of perfusion were marked 3,those with 25%～75% were marked 2,those with less than 25% were marked 1 and normal was marked 0.The therapeutic results were assessed using this marking system.Results There were 13 patients with big area APE,8 with small area APE,14 with iliofemoral vein thrombosis,and 7 with subpopliteal vein thrombosis.2 cases(9.5%) died before thromobolytic therapy.The marks were significant different before(10.2?3.8) and after(2.8?1.4) treatment(t=7.75,P

Objective To study the related factors in diabetic patients with lOwer extremital deep vein thrombosis(DVT) and the nursing strategy. Methods 58 diabetic cases underwent lower limbs 99mTc-MAA veins imaging and/or ultrasunography. The related laboratory data such as fasting plasma glucose(FPG),blood cholesterol, blood triglycerides and clinic informations such as age, disease courses, lower limbs symptoms (swelling, erooted veins and diabetic foot) and acute complication (diabetic ketoacidosis and hyperosmolar non ketotic diabetic coma) were collected simultaneously. The relationship of each factors with DVT incidence were analyzed. Results 28 patients (48.3%) complicated with lower limbs DVT. The DVT incidence was signifi-cantly different among patients with different age, disease courses, FPG, blood cholesterol, blood triglycerides, lower limbs symptoms and acute complication, respectively. No significant difference was seen in patients with different blood pressure, body weight index, diabetes type. Conclusions Various dangerous factors accumu-lating in DM such as old age, long disease courses, high FPG, high blood cholesterol and high blood triglyc-erides contribute to the high incidence of lower limbs DVT. Early intervention, comprehensive treatment and in-tensive nursing should be applied to reduce the incidence of DVT.

Objective To study the related risk factors of pulmonary embolism(PE) in diabetic patients.Methods 58 diabetic cases were underwent lower limbs 99mTc-MAA veins imaging(and/or ultrasonography) and pulmonary perfusion imaging.The related laboratory data [fasting blood glucose(FBG),blood cholesterol,blood long chain triglycerides(LCT)]and clinial informations [age,disease courses,chest symptoms(chest pain and short of breathe),lower limbs symptoms(swelling,crooted veins and diabetic foot) and acute complication(diabetic ketoacidosis and hyperosmolar non ketotic diabetic coma)]were collected simultaneously.SPSS was used for χ2-test and Logistic regression analysis.Results 28 patients(48.3%) were showed to be with lower limbs deep vein thrombosis (DVT) and by 99Tcm-MAA imaging,10 cases(17.2%) with PE.The PE ratio(32.1%) of the patients with DVT was more higher than no DVT(3.3%)(χ2 = 6.53,P＜0.05).Single factor analysis showed the PE ratios had significant difference to factors of chest symptoms,lower limbs symptoms and acute complication(all P＜0.05),respectively.There were no significant difference in other factors of age,disease courses,FBG,blood cholesterol,LCT,blood pressure,weight index,DM type(all P＞0.05),respectively.Multiplicity analysis indicated:the related risk factors of PE included chest symptoms(Score = 13.316,P＜0.01) and lower limbs symptoms(Score = 7.780,P＜0.01).There were no significant differences in other factors(all P＞0.05),respectively.Conclusion The serious DM with chest symptoms,lower limbs symptoms and/or DVT could be controlled as early as possible by all kinds of treatment.It would decrease the PE complication.

Objective To investigate the clinical value of the decfion of percentage of pulmonary perfusion defect score (PPDS％) in patients with pulmonary embolism (PE).Methods A retrospective study was carried out on PPDs％ data of patients(n =36) with clinical confirmed PE.The patients were divided into three levels:low (PPDS％ ＜30％),medial (30％ ≤PPDS％ ＜50％) and high (PPDS％ ≥50％) risk groups,according to the standard of PPDs％ diagnosis.the PPDS％ and the incidence rate of the clinical adverse events were compared in mild,moderate and severe risk PE.The therapeutic results were compared with the PPDS％ changes.Results The mild,moderate and severe risk patients with PE were 15 cases,13 cases and 8 cases respectively,according to the standard of PPDS％ diagnosis.16 cases,12 cases and 8 cases respectively,according to the standard of 2008 ESC APE diagnosis and treatment guidelines.The uniform rate was 94.4％ for two methods,the uniform rate was 100.0％ in which high risk of PE.The PPDS％ of PE was (46.2 ± 4.6) ％ before treatment.The data was significantly higher than that post treatment (31.6％ ± 1.8％) (t =17.38,P ＜ 0.01).The scores of low,medial and high risk patients were (25.9 ± 3.9) ％,(45.6 ± 4.3) ％ and (58.4 ± 4.9) ％ (t =6.18,P ＜ 0.01),respectively.The mild,moderate and severe risk PE according to the PPDS％ standard with clinical adverse events for were 1 cases (6.5％),3 cases (23.0％) and 5 cases (62.5 ％) respectively,with a significant difference (x2 =8.71,P ＜ 0.05).Conclusion PPDS％ could be used as an important reference index for risk stratification of diagnosis,evaluating therapeutic efficiency and predicting the prognosis in patients with PE.

Objective To study the relationship between the 18F-FDG PET/CT whole body imaging characteristics and pathologic features of small intestine primary malignant neoplasms.Methods A retrospective study was carried out on 18F-FDG PET/CT data of patients(n =44)with small intestine disease(25 malignant,19 benign).All results were proved by pathologiy,or diagnostic therapy and/or clinical follow-up.The intestinal wall thickness(IWT)and maxium standardized uptake value(SUVmax)were used to analyze the imaging features under different pathological conditions.Results(1)The incidence rate of local tumor formation for benign and malignant intestinal lesions was 31.6％ and 84.0％(x2 =10.40,P ＜ 0.01),respectively.The IWT was(0.75 ± 0.32)cm and(1.42 ± 0.20)cm(t =2.66,P ＜ 0.01),respectively.The S UVmax was(5.17 ± 3.04)and(9.65 ± 5.48)(t =2.88,P ＜ 0.01),respectively.The incidence rate of enlargement of mesenteric lymph nodes for benign and malignant intestinal lesions was 52.6％ and 72.0％(x2 =1.01,P ＞ 0.05),respectively.The SUVmax was(4.80 ± 1.91)and(7.00 ± 5.61)(t =1.11,P ＞ 0.05),respectively.(2)The metastasis incidence rate of other organs for intestinal malignant lesions was 44.0％.The most common metastasis organs were liver(28.0％),distant lymph nodes(20.0％)and bone (16.0％).The most pathological type of intestinal malignant lesions were malignant lymphoma(44.0％),adenocarcinoma(32.0％).The IWT was(1.41 ± 0.59)cm and(1.36 ± 0.62)cm(t =0.18,P ＞ 0.05),respectively.The SUVmax was(12.49 ± 7.00)and(7.93 ± 2.82)(t =7.55,P ＜ 0.01),respectively.The metastasis incidence rate was 9.1％ and 62.5 ％(x2 =3.89,P ＜ 0.05),respectively.(3)Taking the intestinal local tumor formation and SUVmax andnot less than 4.2 0 wall thickening,and / or metastasis as the main basis of the intestinal malignant lesions,the sensitivity,specificity and accuracy were 96.0％,94.7％ and 95.4％,respectively.The main pathological type of false positive for '8F-FDG PET/CT imaging was intestinal tuberculosis,and false negative was signet(f)ing cell carcinoma.Conclusion 18F-FDG PET/CT imaging has a higher clinical diagnosis value in differentiating small intestine primary malignant carcinoma from benign ones.The size and SUVmax of perifocus lymph nodes could not point out its malignant degree.The 18F-FDG uptake of the lesions is correlated with pathological type.The IWT is not correlated with pathological type.

Objective To investigate the clinical value of percentage of pulmonary perfusion defect score ( PPDs％ ) for risk stratification and prognosis evaluation in patients with acute pulmonary embolism (APE).Methods A retrospective study was carried out on PPDs％ data of patients( n =21 ) with confirmed APE from January 2001 to December 2008.The patients were divided into three levels,low( n =10),medial( n =7) and high risk groups( n =4),according to 2008 ESC APE diagnosis and treatment guidelines.The reference index in predicting risk stratification by PPDs％ was ascertained.34 patients with confirmed APE were divided into three levels ( mild,moderate and severe risk levels) according to the standard of PPDS％ diagnosis from January 2009 to June 2011.A prospective study on the incidence rate of the clinical adverse events was performed.Results The PPDs％ of low,medial and high risk levels according to 2008 ESC guidelines were (25.94 ± 3.95 ) ％,(45.63 ± 4.38 ) ％ and ( 58.42 ± 4.96 ) ％ respectively,with a significant difference ( t ≥4.755,P ＜ 0.01 ).The standard of PPDS％ diagnosis for risk stratification was confirmed in APE:low risk levels:PPDs％ ＜ 30％,moderate:30％ ≤ PPDs％ ＜50％,and high:PPDs％ ≥50％.The mild,moderate and severe risk patients with APE were 17cases,11cases and 6cases respectively,according to the standard of PPDs％ diagnosis,or 15cases,13cases and 6cases respectiveldy,according to the standard of 2008 ESC guidelines.The uniform rate was 94.11％ for two methods; the uniform rate was 100.00％ in which high risk of APE.The mild,moderate and severe risk patients with APE according to the standard of PPDs％ standard with clinical adverse events for were 1case (5.89％ ),3cases (27.27％ ) and 4cases (66.67％ ) respectively,with a significant difference ( x2 =9.23,P ＜0.01 ).Conclusions PPDs％ could be used as an important reference index for risk stratification of diagnosis,selecting therapeutic programs,evaluating therapeutic efficiency and predicting the prognosis in patients with APE.

Objective To evaluate the value of whole body 18F-FDG PET/CT in detecting small intestine adenocarcinoma (SIA).Methods A retrospective study of 18F-FDG PET/CT was performed on 29 cases (male 17,female 12) of SIA,21 cases of small intestine lymphoma (SIL) (male 15,female 6) and 10 cases of small intestine tuberculosis (SIT) (male 4,female 6).Visual and semi-quantitative methods (SUVmax) were used to summarize and analyse the 18F-FDG PET/CT resutls.One-way analysis of variance and x2 test were used to analyze the data.Results (1) 18F-FDG PET/CT for SIA showed a partially conglomerate pattern of hypermetabolic small bowel masses with nodular configurations.A typical SIL showed a partially annular abnormal growth with aggregated foci of radioactivity.SIT lesions were usually in form of stripes and/or nodules with high metabolic foci or lesions withskipped distribution.The SUVmax of SIA (8.44±3.82) was significantly lower than that of SIL (11.54±4.02; F=86.96,t=2.77,both P＜0.01),but not significantly different when compared with SIT (8.61±2.99; t=0.11,P＞0.05).(2) The incidence rates of peri-lesion lymph node enlargement in SIA,SIL and SIT were 72.41％ (21/29),85.71％ (18/21) and 70.00％ (7/10),respectively (x2 =1.50,P＞0.05).The SUVmax of peri-lesion lymph nodes in SIA (5.59±2.86) was significantly lower than that of SIL (11.10±5.72; F=56.56,t=3.85,both P＜0.01),but was not significantly different when compared with SIT (5.63± 3.36; t =0.30,P＞ 0.05).The detection rate of PET/CT on pefi-lesion lymph node enlargement of SIA was higher than CT (41.38％,12/29; x2 =5.69,P＜0.05).(3) The incidence rate of extra-intestinal metastases was 55.17％ (16/29) in SIA,and the most common metastatic sites were liver,bone and adrenal gland.The incidence rate of extra-intestinal lesions was 66.67％ (14/21) in SIL,most commonly presented as widespread multifocal nodal permeation.Extra abdominal tuberculous loci were found in 80.00％ (8/10) of SIT.The incidence rates of extra-intestinal involvement were not significantly different among SIA,SIL and SIT (x2=2.13,P＞0.05).(4) Among the 29 SIA cases,15 (51.72％) involved the ileum,8 (27.59％) jejunum,4 (13.79％) both jejunum and ileum,and 2 (6.90％) both jejunum and duodenum (x2 =18.16,P＜0.01).(5) Among the 29 SIA cases,primary SIA was found in 8 cases (27.59％),double primary in 7 cases (24.14％) and metastatic SIA in 14 eases (48.28％).(6) Based on the clinical data,pathological results and clinical follow-up,the diagnosis of SIA by 18F-FDG PET/CT had a sensitivity and specificity of 93.10％ (27/29) and 80.00％ (8/10),respectively.Conclusions 18F-FDG PET/CT is useful for the differential diagnosis of S1A and for supporting the diagnosis of single primary,multi-primary and metastatic SIA.