腹主动脉夹层动脉瘤最佳筛选方法为（） ["A、CT ","B、X线腹部平片 ","C、DSA ","D、MRI ","E、PET"]
除神经鞘瘤外，腹膜后其他少见良性肿瘤不包括（） ["A、副神经节瘤 ","B、血管瘤 ","C、淋巴管瘤 ","D、脂肪瘤 ","E、炎性假瘤"]
肾上腺腺瘤大多数为（） ["A、T1WI低信号，T2WI高信号 ","B、T1WI高信号，T2WI低信号 ","C、T1WI和T2WI均为高信号 ","D、T1WI和T2WI均为低信号 ","E、T1WI和T2WI均为中等信号"]
大多数出血性肾囊肿因检查时处于出血的亚急性期（出血后1~2周）而在（） ["A、T1WI上呈低信号，T2WI呈高信号 ","B、T1WI上呈高信号，T2WI呈低信号 ","C、T1WI和T2WI上均呈低信号 ","D、T1WI和T2WI上均呈高信号 ","E、T1WI和T2WI上均呈中等信号"]
MRCP显示的“双管征”最常发生于（） ["A、胰头癌 ","B、胰体癌 ","C、胰尾癌 ","D、弥漫性胰腺癌 ","E、胰腺炎"]
分析说明如何进行自然区划。
