Objective To contrast the image qualities and the display percentage of vessel branches in cerebral angiography by two techniques, namely, Digital Subtraction CT Angiography (DSCTA) and Dual Energy Subtraction CT Angiography (DECTA). Methods 40 patients were divided averagely into Group A and Group B. All of them underwent head CTA exam, employing Somaton Definition Dual-Source CT of Siemens. The patients in Group A were under the mode of single tube and single energy by DSCTA, meanwhile the patients in Group B were under the mode of dual tube and dual energy by DECTA. Then the image quality of two groups and the display percentage of main vessels and branch were contrasted. Results 18 patients out of 20 in Group A succeeded in subtraction while 2 cases failed because of patients′ motion. The rate of success was 90%; 20 patients in Group B did subtraction successfully and the achievement ratio was 100%; there was no great difference on cerebral main vessels and branches which displayed in image between two groups. But the image quality of group A was superior to that of Group B. Conclusion As the development of dual-source CT′s hardware and software, DECTA Cerebral Angiography will be applied widely in clinic.

Objective To compare the efficacy of balloon dilation and YAG laser endouretertomy in treatment of secondary ureteric stricture . Methods 32 patients with secondary ureteral stricture were randomly divided into balloon dilatation group and holmium laser cut group, 16 cases in each, respectively. The two kinds of treatment efficacy was compared after two years postoperative follow-up. Results The clinical results of the two groups showed no statistical differences at the third, sixth and twelfth month follow-up (P > 0.05), and there were no statistical differences in the overall effective rates (P > 0.05). The clinical results of the two groups showed no statistical difference at the twenty-fourth month follow-up (P < 0.05), and the overall effective rates had statistical difference (P < 0.05). Conclusions Balloon dilation and YAG laser endouretertomy in treatment of secondary ureteral stricture have the same short-term clinical effects. But the middle-term efficacy of YAG laser endouretertomy is superior to that of balloon dilation.

Aged ; Hodgkin Disease ; pathology ; therapy ; Humans ; Lymphoma, Mantle-Cell ; Male ; Stomach Neoplasms ; secondary

Adult ; Female ; Humans ; Rheumatic Heart Disease ; therapy ; Treatment Failure

Objective To evaluate the clinical value of the oral contrast-enhanced three-dimensional spiral CT cholangiography to display better the intrahepatic and extrahepatic bile ducts. Methods Before spiral CT scanning, the preparation was similar to the conventional X-ray oral cholecystography. The collected parameters included 3-5 mm slice, 1 or 1.5 pitch, 120 kV, 220-250 mAs, and 1 mm reconstruction image. Volume rendering was used to construct the 3D bile duct images. Results In the 20 patients without serious biliary obstruction, oral three-dimensional CT cholangiography displayed the grade Ⅰ branch of hepatic ducts clearly and the displaying rate was 100%. The displaying of the grade Ⅱ branch of hepatic ducts was not good enough and the rate was 60%. The grade Ⅲ branch of hepatic ducts could not be displayed. Conclusion As the substitute and supplement of invasive ERCP, spiral CT 3D cholangiography is safe, simple, painless, and non-invasive. Furthermore, spiral CT 3D cholangiography can display the space structure of bile duct tree more clearly than ERCP. This technique is of great clinical value.

Objective To explore the diagnostic and prognostic significances of platelet parameters changes in Kawasaki disease(KD).Methods The platelet total(PLT),mean platelet volume(MPV),platelet distribution width(PDW)and plateletcrit(PCT)were measured in 23 cases of KD on acute febrile phase and early recovery phase.It was compared with 33 cases suffered from other febrile diseases during the same period and in similar ages.Each KD child should accept the cardiology ultrasonic examination.Results The level of PLT,PCT increased in KD patients.It was more significant in early recover period than in acute febrile period(P0.05).PLT negatively correlated with MPV,PDW(r=0.358,0.268 Pa0.05).Conclusions The changes of platelet parameter play a very important role in diagnosis of KD.But it still can not be certain that whether the changes can help us estimate the variety of the patients condition and prognosis of KD children.It requires further study.

Adult ; Aged ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Carcinoma, Small Cell ; metabolism ; pathology ; therapy ; Cardia ; Chemotherapy, Adjuvant ; Chromogranin A ; metabolism ; Female ; Follow-Up Studies ; Gastrectomy ; methods ; Humans ; Male ; Middle Aged ; Phosphopyruvate Hydratase ; metabolism ; Stomach Neoplasms ; metabolism ; pathology ; therapy ; Survival Rate

Objective To compare the clinical value of 2 oral contrast agents for magnetic resonance cholangiopancreatography(MRCP)and to investigate the safety,potency ratio of negative gastrointestinal contrast agents and to improve MRCP image quality.Methods Before MRCP,30 patients took oral ferric ammonium citrate(FAC)solution as group A and another 30 patients took Gd-DTPA dilution as group B.Then all patients underwent MRCP with T2-haste-fs-thick-slab sequence.Image assessment was done before and after oral taking of negative gastrointestinal contrast agents.Results After oral taking of negative gastrointestinal contrast agents,the interference of liquid in stomach and duodenum was suppressed and even effectively eliminated on MRCP.MRCP image quality was improved.Though the display of bile duct and pancreatic duct was of less image artifact,it reached the quality for diagnosis.No significant difference of MRCP image quality was found between those took FAC solution or Gd-DTPA solution.Conclusion FAC and Gd-DTPA both are effective negative gastrointestinal contrast agents.Gd-DTPA solution is of better function and higher quality-price ratio.

Objective To investigate the effects of tagged fluid and substraction in CT virtual colonoscopy (CTVC) on the conspicuity of polyps and to confirm the optimal attenuation value and the optimal viewing window. Methods Polyps measured 3-10 mm were created in fresh porcine colon in vitro and submerged in saline and mixed with positive contrast medium for the CT values of 200 HU, 400 Hu, 600 HU, and 800 HU. Polyps were measured before and after substraction and compared with those in the control group. The effects of different viewing windows and different attenuation values on the measurement and conspicuity of polyps were analyzed. Results The optimal attenuation value of tagged fluid was 800 HU and the optimal viewing window was colon (-150 HU, 1 500 HU) and bone (500 HU, 2 500 HU). Conclusion The combination of tagged fluid and CT substraction can improve the conspicuity of small polyps covered by colonic fluid.

Objective To study the diagnosis and treatment of portal vein complications after orthotopic liver transplantation. Methods The clinical data of 173 patients receiving orthotopic liver transplantation in our hospital from 2002 to 2005 were retrospectively analyzed. Results The incidence of portal vein complications was 3.5% (6 cases). The incidence of portal vein stenosis was 1.2% and that of portal vein thrombosis was 2. 3%. Three cases had previously been treated for portal hypertension and three cases had had a history of portal vein thrombosis before liver transplantation. All the complicated patients recovered and were discharged after successful treatment. There was no complication related mortality. Conclusions A history of previous treatment for portal hypertension, portal vein thrombosis is a risk factor predisposing the patients to portal vein complications after orthotopic liver transplantation. Color Doppler sonography is a sensitive and specific method for monitoring the portal vein complications following orthotopic liver transplantation. The angiography of portal vein is essential for diagnosis of the complications. Thrombolysis treatment is unsatisfactory for advanced stage portal vein thrombosis. Balloon dilation and stenting are both a safe and effective management modality for simple portal vein stenosis.