Objective To study the effect of scan position consistency on computer tomography-magnetic resonance (CT-MR) images automatic registration in patients with nasopharyngeal carcinoma.Methods Fifteen patients with nasopharyngeal carcinoma were enrolled in this study and scanned with the same position to acquire CT images and MR-1 images. Then they were reacanned with different position for MR-2 images. Image registration of CT-MR-1 and CT-MR-2 was finished using mutual information method.The registration errors were evaluated by measuring the distances between marks. Results The error of au-tomatic CT-MR registration with consistent scan position was 1.32 nun, comparing with the minimum of 2.00 ram and the maximum of 3.83 mm with different positions. Conclusion Keeping consistent scan position can improve the accuracy of image registration.

Objective To evaluate the sensitivity and specificity of histopathologie analysis vs cytomegalovirus (CMV) detection for the diagnosis of CMV-infected hepatitis post liver transplantation. Methods Twenty-five biopsies with CMV infection and twenty-five without CMV infection were collected. Histopathologic observation, immunohistochemical staining and virus detection were performed on both groups to evaluate the sensitivity and specificity of these examinations for the diagnosis of CMV-infected hepatitis. Results The detection rate of microabscess, aggregation of monocyte and rnacrophage, and cytomegalic change in CMV infection group was higher than that in the group without CMV infection (P<0.05), but there was no significant difference in intranuclear inclusion and eosinophilic body between the two groups (P>0.05). The sensitivity and specificity of IHC and PCR for CMV detection were 20% and 100%, 72% and 84%, respectively. Conclosions CMV detection with PCR combined with histological observation is the most effective diagnostic scheme for CMV disease of liver.

Objective　To study the effect of portal vein blocking on the permeability of the intestinal mucosa in pigs. Methods　Healthy Rongchang pigs were divided into 3 groups: ① sham operation group(SO), ② portal vein clamping for 45 min group (PVC-45'), ③ portal vein clamping for 60 min group (PVC-60'). Urine lactulose/mannitol(L/M) ratio was measured after portal vein blocking. Results　The L/M ratio was increased significantly (P<0.05) in PVC-45' and 60' groups than in SO group, with that of PVC-60' higher than that of PVC-45' group, but not significantly. Conclusion　The increase of intestinal mucosal permeability after portal vein blocking is an early and important index for the damage of the intestinal mucosa barrier.

Objective To assess the effects of orthotopic liver transplantation (OLT) on the quality of life (QoL) of the patients with end stage liver disease. Methods QoL of OLT recipients was assessed by the GLQI index of the digestive system disease. A total of 43 recipients with benign end stage liver disease without operational complications, who were clearly conscious and had no difficulty in comprehending the investigation table because of their relative good education above the middle school, had been investigated during May 2000 to December 2002. The detecting data were divided into three parts including before OLT, at discharge, and 3 months after discharge. Results At the stage of discharge, QoL of OLT recipients was improved as compared with that before OLT. The physical function, psychological status, symptom of the recipients had been significantly improved than as compared with those before OLT ( P 0.05). And at the stage of 3 months after discharge, QoL of the recipients was improved significantly than that in the hospital ( P

Objective To describe the clinical characteristics,and to analyze the AGXT gene mutation in three siblings with primary hyperoxaluria type I (PHI).Methods AGXT gene mutation was analyzed by direct sequencing analysis in this family,and the minor allele status was also tested.One hundred unrelated healthy subjects were also analyzed as controls.Results Three mutations in AGXT were identified in each of three patients including two novel heterozygous missense mutations and one previously reported variant.One mutation was a methionine to leucine substitution at position 49 (p.M49L,c.145A ＞ C) in exon 1,one was an asparagine to isoleucine transition at codon 72 (p.N72I,c.215A ＞ T) in exon 2,and another was a heterozygous nonsense mutation at codon 333 (p.R333*).Both p.M49L and p.R333* occured in cis configuration with the minor allele IVS1 +74 bp.Conclusions Two novel mutations are identified probably in association with PHI,however their pathogenicity and potential molecular mechanisms should be explored by further investigations.This is the first investigation on mutant gene analysis of PHI in China.

Solitary brain metastasis in non-small cell lung cancer (NSCLC) patients was previously considered as Stage IV. Gen-erally, only chemotherapy or radiotherapy rather than surgery was considered the treatment for these patients;hence, achieving the de-sired effect was difficult. In recent years, the treatment benefit for these patients significantly increased. Several patients were even pro-vided the chance of being cured through standardized and individualized treatment by a multiple disciplinary team (MDT). This article introduces two solitary brain metastasis patients with NSCLC who were treated by MDT in Tianjin Medical University Cancer Institute and Hospital. This article aims to explore a complete set of diagnostic and treatment practices for the benefit of more patients.

Objective:To observe the effect of dexmedetomidine on sleep and anxiety in cancer patients who received chemothera-py. Methods: Sixty cancer patients suffering from sleep disorders or anxiety symptoms and receiving chemotherapy between March and June 2014 were randomly divided into treatment and control groups. The patients in the treatment group were treated with intrave-nous drip of 1.0μg/kg dexmedetomidine for more than 30 min, once a day for three days. The patients in the control group were given the same dose and drip time of normal saline. Athens Insomnia Scale (AIS) was used to assess the sleep quality of patients before and the 1st, 2nd, and 3rd days after the administration of dexmedetomidine. Self-Rating Anxiety Scale (SAS) was employed to assess anxi-ety before and the 3rd day after the administration of dexmedetomidine. Results:Compared with the control group and status before ad-ministration of dexmedetomidine, the AIS scores were significantly lower in the 1st, 2nd, and 3rd days after administration (P<0.01), and the SAS scores were also significantly lower in the 3rd day after administration (P<0.01). Conclusion:Dexmedetomidine may im-prove sleep quality and alleviate anxiety symptoms in cancer patients undergoing chemotherapy.

Surgical resection is considered to be the most effective therapy for hilar cholangiocarcinoma.Inadequate excision range is the main reason for recurrence after surgery.Extended radical resection provides better long-term survival,however,it may also increase the risk of liver failure because of the extensive hepatic resection.In present study,we showed a new operation which could excise enough length of bile ducts and avoid large volume hepatic tissue resection.The excision extension includes:segment Ⅰ,Ⅳb and partial Ⅳ,left,right and furcation of hepatic duct,extrahepatic ducts,skeletonization of hilar vessels,and dissection of at least second station lymph nodes.As the tissue resected resembles a dumbbell,this surgical technique is named dumbbell type radical resection.The operative indications include:(1) hilar cholangiocarcinoma,Bithmuth Ⅱ and Bithmuth Ⅲ with tumor limited in left or right hepatic ducts ; (2) Without portal invasion; (3) Without third station lymph node metastasis; (4) Without liver or distant organ metastasis.Twenty-three patients had undergone this operation sucessfully.Most patients have high total bilirubin levels (more than 300 μmol/L) and have not received percutaneous transhepatic cholangial drainage or biliary drainage.The average operation time was 355 minutes,and average volume of blood loss during operation was 350 ml.The total survival rate was 65.2％.One-year tumour free survival rate was 95.7％ (22/23),and three-year tumor free survival rate was 7/15.The results indicated that dumbbell type radical resection was feasible for hilar cholangiocarcinoam of Bismuth Ⅱ and Bismuth Ⅲ with tumor limited in left or right hepatic ducts.

Objective To discuss the problems of using high pressure injector in the 16-detector-row CT. Methods Reviewed and analyzed the courses of using high pressure injector in the 16-detector-row CT for 799 patients. Results 774 patients obtained successful infusion,contrast medium hydrops were occurred in 20 patients,2 patients were infusion failure and 3 patients were redid for misoperation. Conclusion Master the details of operating high pressure injector can alleviate the pain of patients,and then obtain the satisfactory effect.

Objective To discuss the value of 16-slice spiral CT urography in clinical diagnosis.Methods To compare the images between CR excretory urography,CT and MPR,which are the results of 26 cases who were examined by both CR and 16-slice spiral CT urography.Results From the comparison,it is found that the spiral CT urography images are better than that of the CR excertory urography,and at the same time,the relationship between the parenchyma of the renal,renal pelvis,ureter,bladder and the urinary organs and adjacent structures can be demonstrated clearly.Conclusion The scanning time of the spiral CT is shorter.The machine can not only reconstruct powerfully but also work out better images,and the result is better than CR excretory urography which can not detect some details in its images.Therefore CR excretory urogaphy can be replaced by 16-slice spiral CT urography regardless of its cost.