Objective To investigate the effect of microcatheter in chemoembolization of HCC. Methods Using 4-F ～ 5-F Yashiro/Kouno and 5-F Hook catheters as guiding catheter,3-F microcatheter was put into segmental hepatic artery or tumor feeding artery and chemoembolization was carried out. Results All 35 cases had 50 times chemoembolizations totally, of them, 16 cases with small HCC had segmental TAE and 19 cases with large but localized HCC had right/left hepatic artery or anterio/posterio brtaneh of right hepatic artery embolization,1 ～2 year survial rates were 100% ,87.5% and 52.6% ,42. 1% respectively after TAE. Liver function damage after TAE was slight and no complications occurred. Conclusion Improving embolization precision by using microcatheter is valuable in the cases with small HCC or large but localized HCC with tortuous hepatic artery,hepatic artery stenosis after injury and variations.

Objective: To investigate the effect of microcatheter in chemoembolization of HCC. Methods Using 4 - F - 5 - F Yashiro/Kouno and 5 - F Hook catheters as guiding catheter,3 - F microcatheter was put into segmental hepatic artery or tumor feeding artery and chemoembolization was carried out. Results All 35 cases had 50 times chemoembolizations totally, of them, 16 cases with small HCC had segmental TAE and 19 cases with large but localized HCC had right/left hepatic artery or anterio/posterio brtanch of right hepatic artery embolization, 1-2 year survial rates were 100%, 87. 5% and 52. 6%,42. l% respectively after TAE. Liver function damage after TAE was slight and no complications occurred. Conclusion Improving embolization precision by using microcatheter is valuable in the cases with small HCC or large but localized HCC with tortuous hepatic artery,hepatic artery stenosis after injury and variations.

ObjectiveTo assess revascularization and vessel anastomosis in digital replantations with DSA.MethodsTwelve cases of digital replantations underwent digital subtract angiography during 2 to 4 days after fingers reattachment. The vessel anastomosis,hemodynamics,stenosis and discontinuation were investigated.The unobstructed and smooth anastomosis was suggested as early stage survival of the reattached fingers,the spasm and stenosis of the reattached vessels were considered as mild vascular crisis,and the discontinuation of hemodynamics were indicated as severe vascular crisis.ResultsThe total 27 vessels were clearly displayed on DSA.Of these vessels,23 vessels were unobstructed and smooth,all digits were survived.Diagnosis coincidence of early stage survival was 100%(23/23). Two vessels were obstructed,which were testified having thrombus by operation research.The other 2 vessels were spasm,the digits were also survived ultimately by expectant treatment.All 4 abnormal vessel anatomosis were found by DSA.Conclusion DSA is important modality in assessing revascularization and blood circulation for digital replantations,guiding in dealing with the vascular crisis,and in predicting early stage survival of the reattached digits.

Two cases of hypoglossal canal dural arteriovenous fistulas (HCDAVF) were reported. The clinical manifestation, radiological features, treatment and prognosis were reviewed. Both cases presented chemosis and pulsatile tinnitus. 3D-time-of-flight (TOF) magnetic resonance angiography (MRA) demonstrated abnormal high signal in hypoglossal canal. Cerebral digital subtraction angiography (DSA) showed that these HCDAVFs were supplied by multiple intracranial and extracranial arteries, and fistulas were located in hypoglossal canal. Fistulas were blocked by coils and Onyx-18 through transvenous approach, and the angiography after the embolism showed complete occlusion of fistula. No adverse events after treatment and no recurrence during the follow up were observed.