目的 探討多層螺旋CT血管成像(MSCTA)技術對下肢閉塞性動脈硬化癥(ASD)的應用價值。 方法 對2007年1月-2009年12月收治的31例ASD患者進行檢查，將數據在ADW4.1工作站行容積再現(VR)、最大密度投影(MIP)、多平面重組(MPR)、曲面重組(CPR)等后處理技術并結合原始圖像進行綜合分析。 結果 血管重建圖像31例顯示良好，存在不同程度的阻塞，閉塞動脈周圍有代償側支血管。 結論 MSCTA可清楚地觀察下肢動脈的血管形態及管壁的鈣化斑塊，狹窄程度及閉塞情況。
ObjectiveTo investigate value of MSCT imaging on differentiating low grade pancreatic neuroendo-crine neoplasms (pNENs) from non-low grade pNENs. MethodThe clinical and CT data of 32 patients with pNENs,who were confirmed by pathological diagnosis from January 2014 to August 2015,were collected and analyzed retrospec-tively. ResultsThere were 15 patients with grade 1 in the low grade pNENs group,there were 11 patients with grade 2 and 6 patients with grade 3 in the non-low grade pNENs group.Compared with the low grade pNENs,the non-low grade pNENs had the larger diameter of the tumor (P=0.007),irregular tumor shape (P=0.006),obscure tumor margin (P=0.003),peripancreatic tissue or vascular invasion (P=0.036),lymphadenopathy (P=0.003),distant metastasis (P=0.019),lower absolute enhancement of tumor at the arterial (P=0.003) and the relative enhancement of tumor at the arterial (P=0.013). ConclusionThe analysis of MSCT features might help for differentiating low grade pNENs from non-low grade pNENs,so that more timely selection of appropriate treatment strategies would be made.