Objective To study the value in predicting the postoperative pulmonary function of the patient with quantitative MSCT.Methods 16-slice spiral CT scanning of lung was performed in 24 patients with pulmonary carcinoma before and after the operation during eupnea.Then the postoperative forced expiratory volume in one second(FEV1) and forced vital capacity(FVC)were calculated according to the preoperative lung capacity which was measured by quantitative MSCT,FEV1 and FVC which were measured by pulmonary functional test(PFT),then the results of FEV1 and FVC predicted by MSCT were compared with that two months later after operation.Results There was significant relativity in FEV1 and FVC between predicted by MSCT before operation and measured by PFT after operation ( P was 0.190 and 0.563 respectively).Conclusion Quantitative MSCT can predict the postoperative pulmonary function exactly,which provides dependable reference data for lung resection in the patients.with pulmonary carcinoma.

Objective To evaluate the applied value of MSCT lung volumes measurement in diagnosing chronic obstructive pulmonary disease(COPD).Methods 40 patients clinically diagnosed with COPD and 26 healthy volunteers as control group underwent MSCT chest CT scanning . The relevant indicators of lung volumes were measured and calculated in comparison with the indicators of clinical lung function . The accuracy and sensitivity of every indicator of lung volumes in forecasting and screening COPD by using ROC curve method were evaluated.Results There were significant differences between the control group and the COPD group in the full expiration volume(Vex),the full inspiration volume(Vin),Vex/Vin and the ratio of the change of lung volume(P

Objective To study the abnormal findings and metabolic alterations of the brain in chronic hepatic disease with MRI and 1H magnetic resonance spectroscopy (1H-MRS) for better understanding the clinical significance of pallidal hyperintensity and the role in the diagnosis and treatment of hepatic encephalopathy (HE) . Methods Brain MRI and 1H-MRS examination were performed in 50 patients with chronic hepatic disease and 20 healthy volunteers. The pallidus index (PI) was calculated and the height of resonance peaks of Glx was measured. The correlation between PI and Child/Pugh classification, and the association between blood ammonia and the spectroscopic alterations were studied. Pre-and post-therapeutic comparative study was also conducted in 5 cases with chronic HE. Results PI was gradually increased from healthy volunteers to patients with chronic hepatitis and liver cirrhosis (1.01?0.04, 1.06?0.09, and 1.18?0.09), and the differences in PI value among them were significant (F=22.294, P

Objective To evaluate the value of MRI in diagnosis of craniopharyngiomas. Methods MRI findings of 52 craniopharyngiomas were analyzed retrospectively and correlated with pathology.Results 37 cases of all 52 cases craniopharyngiomas were located on suprasellar. Craniopharyngioma fluid collections were found to be uniformly hyperintense on T 2-weighted images. However, on T 1-weighted images, the signal intensity of the fluid ranged from hypointense to hyperintense, reflecting the presence of pathological contents in these tumors. Conclusion MRI is an effective method in diagnosis craniopharyngioma due to its direct multiplanar capabilities and sensitive signal changes.

Objective To determine the content of Puerarin in Jiangzhijianfei Granules by high performance liquid chromatography.Methods The determination was conducted by HPLC using a Shim-pack-C18 column(5?m,150 mm?4.6 mm)and a mobile phase of methanol-0.1%Phosphoric acid water(25.3∶74.7).The flow rate was 0.9 mL/min and the detection wavelength was 250 nm.Results Good linear relationship between area and amount was noted for 0.114～0.570?g of Puerarin,with a correlation coefficient of 0.999 6.The average recovery of was 98.74%,RSD was 0.67%.Conclusion The established method is simple,accurate,sensitive and can be applied to the quality control of the preparation.

Objective To observe the growth characteristics and multi-time dynamic contrast-enhanced MR(DCE-MR)findings of rabbit VX2 liver tumor on MR imaging, and to provide a reliable basis for the values of MR in assessment of non-surgical treatment effect of rabbit VX2 liver tumor.Methods 10 rabbit VX2 liver tumor models were established by liver tissue embedding through laparotomy under direct vision and DCE-MRI scaning was performed at the 2nd,3rd,4th and 5th week after establishment.The tumor volume (V)and tumor growth rate (TGR)were calculated at different time points and the signal characteristics were analyzed on MR imaging;then all the rabbits were excuted and HE staining were performed to observe the cancer cells in different places with microscope.Results The TGR at the 3rd week after establishment (404.16%±114.64%)was significantly higher than that at the 4th week (223.49%±65.90%)(t=3.417,P<0.05).The tumors with well-boundary were rim-like enhanced significantly and the central parts were not enhanced on DCE-MR imaging,and the parts between the edge and centre of tumors were heterogeneously mild enhanced. The HE staining results showed that 6 cases of tumor were squamous cell carcinoma and the cells were distributed densely in the edge,the cancer cells and necrosis were distributed equally in the parts between the edge and centre of tumors and the centre of tumors were necrosis parts.Conclusion The rabbit VX2 liver tumor grows rapidly at the 3rd week after establishment, and its histological features can be better reflected by DCE-MRI.

Objective To analyze the computed tomography (CT)characteristics of splenic lymphangioma and the association be-tween CT findings and pathological results.Methods The CT characteristics and pathological findings of 9 patients with splenic lym-phangioma were retrospectively analyzed.Results There were 8 cavernous lymphangioma and 1 cystic lymphangioma.Of the 9 ca-ses,it revealed that the percentage of blood vessel elements ranging from 5% to 50% via microscope.CT found 2 cases were with single lymphangioma,3 with multiple lesions,exhibiting as round or round-like mass;4 cases were found with diffuse lymphangio-ma and different size of cystic masses distributed across spleen.Five of the 9 cases who were with single or multiple lymphangioma showed circular and thin line-like cyst wall,while the remaining 4 cases showed latticed cyst wall in CT characteristics.The content in the cysts were with uneven density in all the 9 cases with CT value ranging from 10 to 40 HU,3 of which combined with sand-like calcification.Enhancement scanning found two characteristics:(a)cyst wall and separation were mildly enhanced,especially in the delayed phase;(b)the content in the cyst presents anomalous small patchy and mild enhancement.The enhancement of the content in the cyst did not change as the increasing of blood vessel composition.Conclusion CT examination will help the diagnosis of splenic lymphangioma and is of significance in informing clinical treatment.

Objective To explore the value of MRI T2*quantification of visceral iron deposition in patients with β-thalassemia major. Methods A total of one hundred and two patients with β-thalassemia major were retrospectively analyzed. They underwent genetic testing and the cardiac and (or) abdominal MRI scanning. Among them, 47 patients underwent splenectomy operation, 95 patients underwent cardiac MRI scanning, 102 underwent abdominal MRI scanning for their livers, pancreases and kidneys, and 55 underwent splenic MRI scanning. The T2* values of the hearts, livers, pancreases and kidneys were measured, meanwhile the liver iron concentrations (LIC) were measured. The levels of serum ferritin (SF) patients were measured in 81 patients. The Spearman rank correlation was employed to analyze the relationship between SF, LIC, age and each organs T2* values. Independent sample t test (normal distribution) or the Mann- Whitney U test (non-normal distribution) were used to compare the hepatic, cardiac, renal and splenic T2* values differences between patients with splenectomy and those without. Results Serum ferritin were highly positively correlated with LIC, moderately correlatied with age, moderately negatively correlated with hepatic and pancreatic T2* values, with r values of 0.833, 0.537,-0.623 and -0.403, respectively (P<0.05). There was significantly negative correlation between hepatic T2*value and LIC (r=-0.925, P<0.01). There were moderately correlations between hepatic and splenic T2*values (r=0.634, P<0.01), hepatic and pancreatic T2*values (r=0.530, P<0.01). However, those T2*values of other organs had no correlation (P>0.05). The hepatic and pancreatic T2*values were reduced (P<0.05), the renal T2* value was increased (P<0.05) in the patients with splenectomy. The cardiac T2* value was not statistically different (P>0.05). Conclusions The patients with β-thalassemia major have prone to suffer from excessive iron deposition in the heart and abdominal organs. The technology of MRI quantification of T2*values could reflect the body iron overload.

Objective To study the correlation of the bone mineral density (BMD) and the body composition components of body mass index (BMI), FAT and LEAN in Chinese obesity. Methods There were 150 cases in obesity group diagnosed by BMI, including 75 males[ median age 46 years, mean weight (89. 64±8. 33) kg] and 75 females[ median age 45 years, mean weight (77.23±6. 85) kg]. There were 150 persons with normal BMI in the control group, including 75 males [ ( median age 47 years, mean weight (62. 34±5.72) kg] and 75 females [ median age 45 years, mean weight (50. 16±5.06) kg]. The body height and weight of 300 persons in two groups were measured respectively and, simultaneously calculated the BMI. These data and the body composition parameters measured by the dual energy X-ray absorptiometry (DEXA) in these two groups were compared and analyzed. The data obtained used two-sample t-test analysis, bi-variable correlation used Pearson linear correlation analysis and multi-variable correlation used multiple linear regression analysis. Results FAT of arms, legs, trunk and total body of male cases in obesity group was (2.90±0.57), (7.48±1.46), ( 15.67±3.05 ), ( 30.92±5.94 ) kg respectively, FAT% was ( 30.9±5.1 ) %, ( 30.6±5.8 ) %, ( 37. 3±4.7 ) %, ( 35.1±4.4 ) % respectively, it was significantly higher than that in control group [ FAT was ( 1.12±0. 64 ), (3.27±1.22), (6. 71±3. 29 ), ( 11.61± 5. 16) kg respectively,FAT% was( 15.4±4. 8)%, ( 16. 5±5.0)%, (21.8±5.8)%, ( 18.6±5. 3)% respectively] ,P <0. 01 ;LEAN of trunk and total body of male cases in obesity group was (27.65±4. 08), (57. 09±7.08 ) kg respectively ; BMD was ( 0. 99±0. 09 ), ( 1.22±0. 09 ) g/cm2 respectively, it was significantly higher than that in control group [ LEAN was ( 22. 89±1.68 ), (48.89 s 3.72 ) kg respectively, BMD was( 0. 89±0. 07 ), ( 1.15±0. 06 ) g/em2 respectively ], P < 0. 01 ; LEAN of arms and legs of male cases in obesity group was(6.22±0.92), (17.31±2.65) kg respectively; BMD was(0.92±0. 04), (1.31±0. 09)g/cm2 respectively,and there were no statistical significance compared with those in control group [ LEAN was ( 5.99±0. 72 ), ( 16. 83±1.67 ) kg respectively, BMD was ( 0. 90±0. 08 ), ( 1.29± 0.09) g/cm2 respectively]. FAT of arms, legs, trunk and total body of females in obesity group was (3.78±1.53), ( 12. 61±3.72), ( 17. 56±2. 59), (33.71±6. 96) kg respectively, FAT% was (33.8± 4.0)%,(40. 1±6.9)%,(43.9±4.9)%, (43.5±4.2)% respectively, LEAN was(7.28±0.94), ( 14. 40 ±2. 05 ), ( 20. 71±3.08 ), ( 43.43±5.69 ) kg respectively, BMD was ( 0. 86±0. 08 ), ( 1.27± 0. 12),(0.95±0. 14), (1.19±0.09)g/cm2 respectively, they were significantly higher than those in control group [ FAT was(2. 04±0. 79), (3.79±0. 94), (6. 89±2. 56), ( 14. 68±3.57) kg respectively, FAT% was (27. 2±4. 5 ) %, ( 29. 6±3.9 ) %, ( 31.0±3.8 ) %, ( 25.9±4. 9 ) % respectively, LEAN was (5. 25±0. 63), ( 10. 65±1.44), ( 16. 65±1.50), (33. 10±3.22) kg respectively, BMD was (0. 78± 0. 04), ( 1.11±0. 09), ( 0. 82±0. 07 ), ( 1.05±0. 07 ) g/cm2 respectively ], P < 0. 01. Conclusion The significantly increasing of fat tissue in all parts of body is a major cause of change of body composition components in obesity. FAT in the trunk increases more obviously than that in other parts of the body in both males and females. The change of distribution of FAT and LEAN can obviously influence BMD.

Objective To explore MRI features and diagnostic value of primary hepatocellular carcinoma(PHCC).Methods Onehundred and seventy-four patients which were diagnosed as PHCC by MRI were analyzed retrospectively,including signal intensity ofPHCC,pseudocapsules,the sign out of PHCC(such as the tumor thrombi in portal or hepatic vein,lymph nodule in abdomen),and therelationship between them and tumor patterns.The accurate and misdiagnostic rate of MRI in the cases of PHCC proved by pathology were analysed.Results The signal intensity of PHCC was mainly hypointense or slightly hypointense on T_1WI and slightly hyperintense on T_2WI.The accurate rate of MRI in diagnosis of PHCC was 91.42%.The appeared rate of unhomogeneous signal intense of PHCC on T_2WI,thetumor thrombi in portal or hepatic veins and the peudocapsules was of significance in statistics between different type of PHCC.Pseudocapsules were shown better on T_1WI than on T_2WI and fat suppression.Conclusion MRI signal intensity of PHCC is socharacteristic that it has improtant value in diagnosing PHCC.