Existence of rays with different decay rate between radiotherapy CT bed and radiotherapy bed, this paper discusses the rate induced and identified two kinds of simple solution.
Equipment Failure ; Radiotherapy ; instrumentation ; Tomography, X-Ray Computed ; instrumentation

Aged ; Humans ; Leukemia, Myeloid, Acute ; diagnosis ; therapy

Acupuncture Points ; Acupuncture Therapy ; instrumentation ; methods ; Humans ; Needles ; Pelvic Bones ; anatomy & histology

ObjectiveTo compare the effect of amiodaron and propafenone on the cardioversion of paroxysmal auricular fibrillation (PAF). Methods58 PAF (≤48 h) cases were radomly divide into two groups: 30 cases who accepted amiodaron 150 mg intravenous injection, and 0.6～1.0 mg/min intravenous drip afterwards in amiodaron group, other 28 cases who accepted propafenone 1.4～2.0 mg/kg vein injection, and 0.28 mg/min intravenous drip afterwards in propafenone group.If propafenone was not effective, the cases in propafenone group were given amidoaron. ResultsThe successful reversion rate was 86.7% (26/30) in amidoaron group while 57.1% (16/28) in propafenone group(P<0.05). The mean time of recovering was (101±95) min (6～508 min) in amidoaron group, while (172±148) min (11～608 min) in propafenone group(P<0.05). ConclusionIt is more rapid and effective of amidoaron on the cardioversion of paroxysmal auricular fibrillation than propafenone is.

Objective To assess characteristics of coronary artery lesions and risk factors of coronary heart disease (CHD) in young people with coronary arteriography.Methods 192 patients with CHD diagnosed by coronary arteriography were divided into the young group (91 cases, 25—40 years old) and senile group (101 cases, 41—84 years old). Characteristics of coronary artery lesions and risk factors of CHD of two groups were analyzed, and risk factors were especially tested with logistic regression.Results Coronary artery lesions in the young group were characterized in most patients by singles vessel lesion (64%), while by multi vessels lesion (71%) in the senile group. Multiple logistic regression analysis showed that risk factors such as male, smoking, hyperlipemia, family history and increassed C-reactive protein (CRP) were highly related with CHD(P<0.01).Conclusion Single vessel lesion is a feature of young patients with CHD, and independent and related risk factors of CHD in the young group are male, smoking, hyperlipemia, CHD family history and CRP.

Objective To evaluate the safety of myomectomy by extrusion in cesarean section , in comparison with routine cesarean delivery. Methods From January 2008 to December 2010, a total of 128 operations of myomectomy by extrusion in cesarean section were performed (Myoma Group), while another group of 128 cases undergoing caesarean section , which respectively followed every cases of the Myoma Group but had no hysteromyoma , was selected as the control group .The amount and rate of postpartum hemorrhage , the level of postpartum fever , and postoperative hospital stay between the two groups were compared , respectively. Results In the two groups:the amount of postpartum hemorrhage was (233.6 ±58.9) ml vs.(228.5 ±90.9) ml (t=0.530, P=0.597); the rate of postpartum hemorrhage was 0% (0/128) vs.0.8% (1/128) (P=1.000); the decrease of haemoglobin was (6.17 ±2.83) g/L vs.(6.89 ±3.09) g/L (t=-1.944, P=0.053); the decrease of hematocrit was 2.22%± 0.98%vs.2.27%±1.02% (t=-0.400, P=0.690); the rate of postpartum fever was 2.3% (3/128) vs.5.5% (7/128) (χ2 =1.665, P=0.197);the length of postoperative hospital stay was (4.2 ±0.8) d vs.(4.1 ±1.2) d (t=0.706, P=0.481). There were no significant differences between the two groups in the abovementioned parameters . Conclusions The myomectomy by extrusion in cesarean section does not increase the level of postpartum hemorrhage and the rate of postpartum infections .It is a simple, minimally invasive , safe and feasible surgical method , being worthy of clinical application .

Objective To observe the clinical efficacy of small-dose ranitidine hydrochloride and diphenoxy- late compositae in the combined treatment of diarrhea-predominant irritable bowel syndrome(D-IBS).Methods A prospective,randomized controlled clinical trial was designed.150 D-IBS patients according to RomeⅡcriteria were randomly divided into combined treatment group and control group.The combined treatment group(74 patients)re- ceived ranitidine hydrochloride,0.15g,each evening and diphenoxylate compositae,1 piece,each evening.The control group(76 patients)received diphenoxylate compositae,1 piece,rid.This study consisted of a 2-week baseline period, a 3-week treatment period,followed by a 2-week follow-up period.The main efficacy variable was assessed by per- ception of overall symptom during the previous weeks.Secondary efficacy variables included severity of diarrhea,ab- dominal pain and distention and other symptoms.Results After treatment of 3 weeks,the efficacy of the combined treatment group was better than that of the control group(x~2=5.10,P

[Objective]A new limited contact femoral supracondylar interlocking intramedullary nail(LCFSIIN) was made,which was part of a new custom-made hemi-knee joint,to improve the results of childrens' limb salvage.[Method]A new LCFSIIN was performed and the stress of bolts,intramedullary nails and bone were analyzed by finite dement analysis(FEA) while the bolts were implanted in different angulafions-0?,15?,30?,45?and 60?.[Result]The results of FEA show that the stress of bolts,bone and nails with 15? insertion angles of bolt was the tiniest and well distributed.Stress of bone with 0? insertion angles was more obvious than that with 15?,30?and 45?.The more the angles,the stress of proximal bolt became more obvious and the stress of distal bolt decreasing.[Conclusion]This new LCFSIIN can reduce destruction of biological environment of bone and is easy in use in limb salvage surgery of allograft.

Background and purpose:Gene therapy is a novel approach for the treatment of the patients with breast cancer. One of the effective ways is to direct transgenic expression to specific tissues or tumors with the use of tissue-specific-promoters (TSP). hTERT (human telomerase reverse transcriptase) is highly expressed in many types of cancers including breast cancer. Thus, we hypothesized that the hTERT promoter targeting with gene therapy vectors could be exploited for breast cancer. In this study, we amplified hTERT gene promoter and cloned it into the reporter vector pEGFP and pGL3-Basic. Afterwards, the specific transcription of hTERT promoter in MCF7 cells was evaluated. Methods:hTERT gene minimal promoter was PCR amplified and cloned into the reporter plasmid pEGFP-1 and pGL3-Basic.The constructs pEGFP/TERT and pGL3/TERT were transfected into MCF7 breast cancer cells and HBL100 human epithelial cells, respectively.The expression of EGFP and luciferase were investigated, respectively..Results:pEGFP/TERT and pGL3 /TERT bearing hTERT gene promoter were constructed. The specific expression of EGFP was detected in MCF7 cells while little expression of EGFP was seen in HBL100 cells.In accordance with EGFP, luciferase driven by hTERT also showed specific and high activity in MCF7 cell (RLU/U: 33784), which is 15 times higher than in HBL100 (RLU/U: 2400).Conclusions:The high transcriptional activity of hTERT gene promoter in MCF7 cell indicates its potential utility as a novel candidate for transcriptional targeting of breast cancer.