子宫肌瘤数字化三维动脉血管网的构建和意义

【摘要】 目的 探讨构建基于CTA数据的子宫肌瘤数字化三维动脉血管网的方法,并通过其观察肌瘤的血供来源和血供分布类型?方法 选取子宫肌瘤患者64例行双源CTA扫描,获取CT原始图像后利用Mimics10.01软件对子宫肌瘤动脉血管网进行数字化三维重建,并作分析。结果 (1)构建了64例患者的子宫肌瘤数字化三维动脉血管网,可清晰的显示盆腔大动脉。子宫动脉及肌瘤的主要供血血管和血供分布情况。(2)患者肌瘤的血供来源分别为子宫动脉(81.25%)。子宫动脉和单侧卵巢动脉(10.9%)、子宫动脉和双侧卵巢动脉(4.69%)及卵巢动脉(3.1%)。(3)子宫肌瘤血供的分布类型可分为4型:①Ⅰ型:一侧动脉供血为主型(一侧子宫动脉伴/不伴同侧卵巢动脉的供血量显著超过子宫肌瘤瘤体的1/2),占35.9%(23/64);②Ⅱ型:双侧动脉供血均衡型(双侧子宫动脉伴/不伴同侧卵巢动脉的供血量分别约为子宫肌瘤瘤体的1/2),占53.1%(34/64);③Ⅲ型:单纯一侧子宫动脉供血型,占7.8%(5/64);④Ⅳ型:卵巢动脉供血型,占3.1%(2/64)。结论 利用CTA和重建软件可以构建出数字化三维的子宫肌瘤动脉血管网,并可进行血供来源及分布的分析,为手术方案的制定和临床教学提供参考。

The Effect of Main Parameters of Solar-heat Water on Organic Rankine Cycle

Based on the organic Rankine cycle(ORC)for low temperature waste heat and the heat resource of solar-heat,the thermal system of ORC of solar-heat water and the effect of main parameters on the system were analyzed.The results show that the evaporation temperature is the most important parameter which affects the output net power.When the solar-heat water temperature and the condensing temperature are fixed,there is an optimum evaporation temperature which can make the system obtain the maximal output net power.With the increasing of the solar-heat water temperature and condensing temperature,the temperature of the optimum evaporation temperature increases.The output net power improves with the condensing temperature drops.Similarly,the temperature and mass flow of the solar-heat water increase;the output net power improves.