Objective To evaluate the value of MRI in diagnosis of prostate diseases.Methods Clinical data and MRI findings of prostatic carcinoma(PC) in 43 cases and benign prostatic hyperplasia(BPH) in 33 cases confirmed pathologically were reviewed blindly by two radiologists and compared with that of pathology.The sensitivity,specificity,positive predictive value(PV+),negative predictive value(PV-) and accuracy of MR imaging were also calculated.Results The sensitivity,specificity,PV+,PV-and accuracy of MR imaging in diagnosing prostatic lesions were 90.7%,84.8%,88.6%,87.5% and 88.2% for PC,84.8%,90.7%,87.5%,88.6% and 88.2% for BPH,respectively.PC located in the peripheral zone were 67.4%(29/43 cases),in the central zone were 9.3%(4/43 cases),the prostates presented irregular enlargement with diffuse low signal intensity in 16.3%(7/43 cases),7.0%(3/43 cases) lesions did not found by MRI even after getting pathological results.The size of the mass ranged from 0.3~10.0 cm,mean 2.4 cm.All of 40 cases,the lesions showed low signal intensity without border and capsule.The affected structures around the lesions inculuded prostatic capsule(n=34),seminal vesicle(n=24),muscle(n=8),rectal(n=5),bladder(n=6) and ilium(n=1),lymph nodes metastasis(n=11),bone(n=13) and lung(n=2).The lesions of BPH located in the central zone were 87.9%(29/33 cases),showing enlargement of the central zone with inhomogeneous signal intensity,the other 4 cases in peripheral zone showed low signal intensity with border and 2 cases with capsule.Conclusion MRI has higher sensitivity,specificity,positive predictive value,negative predictive value,and accuracy in diagnosis of prostatic diseases.

Objectives To study the effects of anesthesia, head-up position and CO 2 pneumoperitoneum on cardiac autonomic nerve evaluated by heart rate variability (HRV) during laparoscopic cholecystectomy. Methods 20 patients undergoing elective laparoscopic cholecystectomy were anesthetized with balanced anesthesia. Pneumoperitoneum was introduced by inflation of CO 2. Intra-abdominal pressure was maintained at (11～13) mmHg. HRV was measured in supine and head-up tilt (15?～20?) positions while the patients were awake, in the stable state of anesthesia and CO 2 pneumoperitoneum at 10 minute and 20 minute respectively. Power spectral analysis of HRV was conducted on 256-beat R-R interval segments of interpolated heart rate by using the fast Fourier transformation. Total spectral power (TP), low frequency power (LF) and high frequency power (HF) were calculated by integrating the power spectra between (0～0 5) Hz, (0 03～0 15)Hz and ( 0 15～0 35)Hz. Results The change of positions did not significantly influence HRV. Decreases in LF, HF and TP were noted during the maintenance of anesthesia. The power of LF, the normalized unit of LF and LF/HF ratio increased during inflation period. LF/HF increased from 2 15?1 16 to 4 61?2 04 ( q =4 491, P

Plasma levels of homocysteine (Hcy),folic acid (FA) and Vitamin B12 (VB12) were measured in 120 patients of colon adenomatous polyps and 40 healthy subjects.Plasma Hcy levels in colon adenomatous polyps patients were significantly higher than those in controls[(14.24 ± 0.52) μmol/L vs.(10.93 ± 0.81) μmol/L,P =0.0014)],while plasma FA levels in polyps patients were lower than those in controls [(6.26 ± 0.27) μg/L vs.(10.74 ± 0.85) μg/L,P ＜ 0.0001].There was no difference in plasma VB12 levels between two groups(P =0.7100).The plasma Hcy levels in patients with multiple colon polyps were higher than those with single colon polyps (P =0.0092),while the plasma FA levels demonstrated contrary results (P =0.0047).With the pathological type progression,the plasma Hcy levels were gradually raised,and FA levels gradually decreased.Plasma levels of FA,Hcy and VB12 were not correlated with the location and distribution of polyps.These results suggest that plasma FA and Hcy levels may be related to disease progress in patients with colon adenomatous polyps.

Objective To observe the clinical contraeeption effects of GyneFix IN IUD,MCu IUD and TCu220C IUD.Methods From January 2005 to December 2006,comparative study was carried out by randomly applying 3 different types of IUDs(GyneFix IN,MCu and TCu220C IUD) for 300 healthy women.Follow-up survey was taken after 1,3,6,and 12 months.Results The pregnancy rates with IUD among 3 types of IUDs showed no significant difference(P>0.05).The expulsion rates of GyneFix IN IUD and MCu IUD were lower than that of TCu220C IUD(P<0.01).The removal rate of GyneFix IN IUD and MCu IUD were lower than that of TCu220C IUD(P<0.05).The 12 months cumulative continuation rates of GyneFix IN IUD and MCu IUD were higher than that of TCu220C IUD(P<0.01).Conclusions GyneFix IN IUD and MCu IUD can be recommended for clinical use based upon the advantages of lower pregnancy rate,lower removsl rate because of side-effect and higher cumulative continuation rate.Proper IUD should be selected depending on individuals,in order to increase the contraception effects and decrease the side-effects.

Objective:Study on a kind of meet the war wounded, public emergency safety, first aid and transportation of severely injured patients with safe, simple, and without lifting height of the liquid infusion apparatus. Methods:The negative pressure of transfusion bag from the eletrical air pump transfusion (blood) pipe extrusion, The transfusion apparatus weight, bubble, drop speed, sound, light alarm device parameters input to the control system by the sensor, according to the parameters set to safely complete transfusion or stop. Steps:Infusion apparatus mounted on the liquid and the transfusion pipe for infusion after stetting the number of drops of liquid infusion, the remaining parameters such as. Results:Infusion apparatus can be placed in any position, the peripheral infusion tube length range without the suspension liquid device and changing the existing infusion (blood) products and procedures, which create convenient, comfortable infusion conditions without position limitation The controllable range of the infusion speed is 50ml-1000ml/h,which can monitor the infusion and the air in the pipeline, liquid flow rate, the remaining amount, According to the set alarm timely and automatically stop the transfusion. Conclusion:To improve the safety of transfusion, save human resources. and it’s dual-use, small volume, easy to carry.

Objective To develop a method to produce leukoreduced platelet concentrates(LR-PCs) from pooled buffy coats in additive solution(a mixture of solutions for medical use).Methods LR-PCs were made from 6 pooled buffy coats(12 whole-blood units) and 220g additive solution,including 90% multiple electrolytes injection solution,8% ACD-A and 2% 50g/L NaHCO3 injection solution.After centrifugation,the PCs were leukoreduced with a filter and stored in a 600ml platelet storage bag.LR-PCs were prepared in a closed system.Results Routinely produced LR-PCs(n=30) contained(2.96?0.31)?1011 platelets with a volume of(270? 32)ml.The WBC and RBC count were(1.3?0.2)?106 and(5.8?1.1)?109 per unit,respectively.The CD62P expression was(22.5? 10.6)%.After 8-day storage,the in vitro quality of LR-PCs,including pH,hypotonic shock response(HSR) and CD62P expression were 7.14?0.04,(54.0?8.2)% and(45.7?13.8)%,respectively.Conclusion In terms of the in vitro quality of LR-PCs,the method of preparing LR-PCs from pooled buffy coats in mixing solutions is feasible.

Objective To compare the effect of spinal anesthesia by using 0.75% ropivacaine or 0.5% bupivacaine in a simulated state of rocking naval vessels, in order to choose an optimal anesthetic agent in a rocking naval vessels at sea. Methods Eighty patients undergoing elective surgery of abdomen or lower limb were randomly divided into 4 groups (n=20). Namely, horizontal level with 0.75% ropivacaine control group (R1), horizontal level with 0.5% bupivacaine control group (B1), simulated rocking with 0.75% ropivacaine group (R2), simulated rocking with 0.5% bupivacaine group (B2). The effect of anesthesia, the changes in hemodynamics and the incidence of relevant side-effects were determined and compared among the four groups. Results The anesthetic level (analgesic level) of group B2 was 2.7 segments higher than that in group B1, and the durations for fixed level was longer than group B1 (P

During radiotherapy, ionizing radiation can damage some structures of the heart, including pericardium, myocardium, cardiac valve, conducting system, and coronary artery. Radiation-induced cardiac injury can manifest as abnormalities in many aspects including myocardium enzymes, perfusion imaging, electrocardiogram, strain rate imaging.

Objective To explore MRI appearances of malignant mixed mesodermal tumors (MMMT) of the uterus. Methods All 9 patients with MMMT were proved by pathology. MRI characteristics of MMMTs in 9 patients were analyzed retrospectively.Results Of 9 MMMTs,6 were uterus body-based and 3 were cervical-based.Body-based MMMTs tended to be expansive or infiltrative growth with expanded uterus cavity. Cervical-based.MMMTs tended to be exophytic growth without myometrial infiltration. The tumors presented iso- or low signal on T1WI. The body-based MMMTs presented heterogeneously hyper-intense on T2WI ( n =5 ),hemorrhage ( n =1 ),cystic degeneration and necrosis (n =5) were seen within the tumors. Cervical-based MMMTs presented relative hyper-intense signal on T2WI with band or tree-like hypo-intense signal,without hemorrhage and necrosis. Body-based MMMTs were enhanced more obviously than cervical-based MMMTs.Conclusions The growth pattern,MRI signal and enhancement characteristics of cervix and uterus body MMMTs are different. MRI is helpful for the diagnosis of MMMT.

Objective To study the difference of Han male children and adolescent bone age of wrist-hand in Beijing and Guangzhou.Methods Bone age (BA) of left hand-wrist was assessed using X-ray by two radiologists based on CHN atlas method in 993 healthy children and adolescents (age range:1.0-19.0 years).The radiologists were blinded to the chronological age (CA) of those children.The interobserver variations were analyzed for evaluating the reliability of CHN Atlas method.The difference between CA and BA were separately assessed,and were analyzed by t test.Results Close correlation was found between BA and CA (r =0.969,0.957,P ＜ 0.01) in both two regions.The bone age was advanced at 1.0-3.9,and 7.0-15.9 years in Beijing boys,and at 1.0-2.9,6.0-7.9 years in Guangzhou bpys.There was significant difference at 1.0-1.9,9.0-14.9 years between Beijing and Guangzhou.Conclusions The bone age of Han male children adolescent in Beijing and Guangzhou area has the characteristic of acceleration.There is significance difference at some years between Beijing and Guangzhou,and the results can provide potential value for the further study of BA and clinical medicine.