Objective To evaluate stepping DSA technology in lower extremity artey disease. Methods 12 cases performed with stepping DSA in lower extremity artery were examined with TOSHIBA Infinixi digital subtraction angiography system, of which, 8 ones were also examined with conventional DSA. Results Stepping DSA technology could decrease the dosage of contrast agent and the examination.

Objective To determine the CT and MR findings of Madelung syndrome. MethodsFive cases of Madelung syndrome were collected in our hospital from February 2006 to June 2009, including 3 cases of typeⅠMadelung syndrome and 2 cases of typeⅡ Madelung syndrome. The 5 cases were all examined by CT, meanwhile 1 case by CT enhancement scanning and 2 cases by MR. The clinical characteristics and imaging manifestations were analyzed. Results CT and MR images in 3 patients of typeⅠMadelung syndrome displayed fat accumulation within the subcutaneous tissue of the upper trunk and deep layer tissue of neck. The diffuse masses were located around the neck, upper chest and shoulders, which were called horse collarandbuffalo humps. The other 2 cases of type Ⅱ Madelung syndrome displayed fat thickening within the subcutaneous tissue of the proximal extremities, anterior chest wall, showing special appearance of vigorous sailor. All the 5 patients showed fat deposit within the subcutaneous tissue of the anterior rectus abdominis, inguina and fat accumulation within the scrotum. CT showed proliferated fat at the subcutaneous tissue of the involved regions. The CT value of proliferated fat were between -30 and -70 HU. The proliferated fat tissue all could be displayed on MR T1WI,T2WI and T2WI fat suppression sequence, with typical hypointensity on T1WI and hyperintensity on T2WI, hypointensity on fat-suppression sequence and fibrous septation presenting among fat tissue. Conclusion Combination with the history of long-term alcohol abuse, the Madelung syndrome could be diagnosed by CT and MR, which had great value in the surgical planning for identifying the extent of disease.

Objective To evaluate the application of 3D DSA in diagnosis of intracranial aneurysm. Methods Conventional DSA and 3D DSA were performed in 15 cases with subarachnoid hemorrhage. Results Of 15 cases, by 3D DSA, 12 ones were diagnosed as intracranial aneurysm, and the remaining 3 ones were suspected, while 7 ones could be diagnosed by conventional DSA. Conclusion 3D DSA can improve the diagnosis of intracranial aneurysm.

Objective To discuss the emergency interventional therapy for ureter invasion by CACX, obstructive bilateral hydronephrosis and uremia complicated with hemorrhoea. Methods 5 cases with ureter invasion by CACX, obstructive bilateral hydronephrosis and uremia suffered from hemorrhoea during hemodialysis, who were performed with emergency interventional therapy. Results After therapy, hemostasis were realized in all cases, and all symptoms were alleviated, such as vaginal fluid and fall-swell in pelvis. The short-term total effective rate was 100% . Conclusion Interventional chemoembolization can be used in the treatment of CACX with acute hemorrhoea.

Objective To study the continuous drainage treatment by percutaneous puncture of Splenic Abscess (SA), which is due to double-embolization for treatment of liver cancer with hypersplenism. Methods 158 patients with liver cancer with hypersplenism were adopted as the subjects, of which, 7 ones were complicated with SA. Results The symptoms of the 7 ones were all alleviated, such as fever, abdominal pain, left interior pain. Conclusion Continuous drainage treatment by percutaneous puncture, combined with flushing abscess cavity by antibiotics solution, is very effective for SA due to double-embolization.

Objective To analyze the reasons of CT misdiagnosis of solid-pseudopapillary tumor of pancreas (SPTP), including wrong orientation, mislocation. Methods The literatures on SPTP were discussed. Results Lesions of SPTP could appear at any position of the pancreas. Conclusion The result is very significant for guiding treatment and judging prognosis.