论文部分内容阅读
摘要目的评价CT灌注得到的血管参数,即血流量、平均通过时间(MTT)、容量转移常数(Ktrans)、渗透性表面积乘积(PS)、细胞外血管外间隙容积以及血管容积等,是否与结直肠肿瘤中代表血管生成的免疫组化标志物存在联系。材料与方法该前瞻性研究获得了地区伦理委员会以及研究与发展委员会的批准。29例病人均签署知情同意书(男14例,女15例;年龄55~94岁,平均70岁)。以分期为目的的术前CT检查中加入CT灌注扫描程序。CT灌注参数分别由2名放射学
Abstract Objective To evaluate whether the parameters of blood vessels obtained by CT perfusion, such as blood flow, mean transit time (MTT), volume transfer constant (Ktrans), permeability surface area product (PS), extravascular extravascular space volume and vascular volume, There is a link between immunohistochemical markers that represent angiogenesis in rectal tumors. Materials and Methods This forward-looking study was approved by the Regional Ethics Committee and the Research and Development Board. All 29 patients signed informed consent (14 males and 15 females, aged 55-94 years, average 70 years old). To staging for the purpose of preoperative CT examination by adding CT perfusion scanning program. CT perfusion parameters were 2 radiology