Objective To explore the clinic value of magnetic resonance cholangiopancreatography(MRCP)for the diagnosis of biliary pancreatitis(BP).Methods MRCP manifestation of 60 cases of BP proved by clinic records was analyzed retrospectively. Results Of all the 60 cases,41 were found pancreatitis combined with gall bladder stones or biliary cystitis,19 combined with stones in common biliary duct.Dilation of biliary duct was found in 23 cases,dilation of pancreatic duct in 9 cases,dilation of both in 5 cases.Conclusion MRCP can clearly display the signs of biliary pancreatitis,and have high clinic value for its diagnosis.

Objective To explore the value of imaging diagnosis on complications after kidney transplantation. Methods The radiologic appearances of 165 patients with postoperative complications were reviewed in a double blind method by two experienced radiologists. Results In the 158 patients with postoperative pulmonary infections, the main etiological causes according to their frequency were bacteria,fungus,virus,and so on. The postoperative pulmonary infections of the patients with renal transplantation were diagnosed as normal(28,17 7%),increased lung markings(44,27 8%) and pulmonary infection(84,53 2%) by chest X-rays and CT. The renal artery stenosis after kidney transplantation was diagnosed in 5 cases, and thrombosis of pancreas blood vessel after operation of simultaneous pancreas-kidney transplantation was diagnosed in 1 case by DSA. Conclusions Radiography and CT scan are very useful in the clinical diagnosis of postoperative pulmonary infections in the patients with renal transplantation,and radiography should be the first choice for the imaging diagnosis. DSA is one of the ideal and reliable measns to diagnose the postoperative vascular complications in kidney transplant recipients.

Objective To assess examinational methods of Multi-slice CT(MSCT)in diagnosis of palatine lesions. Methods 28 cases were performed MSCT examination with the conventional method,extending -tongue method,colliding-tongue method and pronouncing method. All images were reconstructed by means of multiplana reconstruction (MPR) and CT virtual endoscope (CTVE). Results Correct diagnosis were obtained through the complementarity of the methods. Conclusion Reasonable examination methods of MSCT is apt to display palatine lesions.

Objective To investigate the quality assurance(QA) and quality control(QC)of 16 slices helical CT angiography in the lower limb. Methods 42 cases clinically suspected as the arterial disease of lower limb undergoing MSCTA were analyzed retrospectively. All reconstructed images were reformed by means of MIP, VR, MPR and CTVE. Results 22 patients were diagnosed correctly by using MSCTA. Compared to DSA and/or surgical results. Sensitivity, specificity and accurate rate were all 100%. Conclusion It is important to strengthen the QA and QC of the 16 slices helical CT angiography in the lower limb.

Objective To investigate the quality assurance (QA) and quality control (QC)of intravenous injection in the radiology department. Methods The data from 1352 cases of intravenous injection in the radiology department were analyzed retrospectively. Results The bulge in region of the intravenous injection have been found in 28 cases, regional cyanochroia in 52 cases, allergic response in 25 cases, hypoglycemia response in 58 cases. Conclusion It is important to strengthen the QA and QC of intravenous injection in the radiology department.

Objective To explore the value of angiographic diagnosis and interventional therapy for Takayasu arteritis. Methods Thirty-eight patients with Takayasu Arteritis (TA)(11 men, 27 woman; aged 8-54; average age, 30.5?18) undergone angiography were analyzed retrospectively. The angiographic appearances in all of the patients were observed dynamically in a double blind method by two experienced radiologists together and formed a consensus interpretation. Results According to the classification of Lupi-Herrea, typeⅠwas found in 11 cases, typeⅡin 15, typeⅢin 7 and typeⅣin 5 by angiography. Among 38 patients the arterial involvement ineluded subclavian artery in 20 cases (52.6%), the abdominal aorta in 15 cases (39.5%), the renal artery in 14 cases (36.8%), thoracic aorta in 10 cases (26.3%), carotid artery in 9 cases (23.7%), iliac artery in 9 cases (23.7%), axillary artery in 7 cases (18.4%), superior mesenteric artery in 4 cases (10.5%), coronary artery in 3 cases (7.9%), pulmonary artery in 3 cases (7.9%), and so on. Percutaneous transluminal angioplasty was performed in 22 cases and the stent placement was managed in 12 cases successfully. Conclusions Angiography is one of the ideal and reliable methods for the diagnosis and guidance of the interventional treatment for TA, and the latter is a mini-invasive and effective way for TA.

Objective To study the method and efficacy of double chemoembolization of hepatic carcinoma by transcatheter arterial cheomembolization (TACE) and portal vein port catheter system (PCS). Methods PCS was implanted in portal vein in 17 cases of irresectable primary hepatocellular cancer (HCC) during operation. One month later, chemoembolization of portal vein via PCS was performed, meanwhile TACE was also done (hepatic arterial portable vein chemoembolization, HA PVCE). A total of 120 cases of HCC treated simply with TACE were served as the control. Results The technical success rate was 100% in both TACE and portal vein PCS. Hepatic arteriography showed rich or moderate blood supply of HCC in 134 cases and PCS portography showed tumor staining in 6 cases. In groups of HA PVCE and TACE, the positive alpha fetoprotein (AFP) level decreased in 80% and 71.6% cases; half a year survival rate was 85.7% and 74.4%, and one year survival rate was 71.4% and 52.4%, respectively. Conclusion Double chemoembolization by TACE and portal vein PCS is a safe procedure with high technique success rate and therapeutic efficacy for irresectable hepatic carcinoma.

Picture archiving and communication system ( PACS ) based on digital teaching platform of medical imaging consists of web teaching system and teaching resource library of medical imaging.The web teaching system includes four function modules of classroom management,work management,teaching management and test management.The teaching resource library includes script,pictures,and audio,video and animation materials of theoretical books,typical cases,examination techniques and medical imaging equipments.Utilized in theoretical and practical classes,the teaching characteristic of medical imaging is made prominent,and the subjective motility of the students is brought into play.

Objective To make a futher understanding of the CT features of primary carcinoma of vagina and to explore the clinical value of CT diagnosis of it.Methods Sixteen cases of primary cacinoma of vagina with clinical and CT data confirmed by pathology were analyzed retrospectively. The CT findings were observed in a double blind method by three experienced radiologists together and formed a consensus interpretation. Results The accurate rate of CT diagnosis for primary carcinoma of vagina was 81.3% in the 16 cases. There were 2 stage I, 6 stage II, 4 stage III and 4 stage IV lesions which were diagnosed by CT. The numbers of cases of the elevated type, ulcerative type and infiltrative type were 11, 3, and 2,respectively. The transcatherter internal pudendal arterial chemoembolization were successfully performed in 2 patients with vaginal carcinoma. Conclusion CT is not only a non-invasive method of detecting primary carcinoma of vagina,but also play an important role in differentiating the clinlcal phase and type of it. In more advanced stages of vaginal carcinoma, interventional therapy is chosen as the useful treatment to avoid exenterative surgery, preserve anatomy and function.

Objective To analyze CT features of retroperitoneal tumors or tumor-like lesion and to evaluate CT in localizating and qualitative diagnosis of diseases.Methods CT findings in 45 cases with pathologically-proved retroperitoneal tumor were retrospectively analyzed and compared with pathological results.Results There were 25 cases of benign tumors and 20 cases of malignant tumors.The CT features of benign tumors were homogeneous density,smooth peripheria with clear border,while mixed density,large and irregular in malignant tumors.The accuracy of localizating lesions was 89%,the accuracy of qualitative diagnosis was 78%,the accuracy of histologic evaluation was 49%.Conclusion CT imaging is valuable in diagnosing retroperitoneal tumors.CT can make accurate localization of tumors and identify the nature of tumors,but is limited in evaluating histologic types.