Objective To investigate the feasibility of virtual non-enhanced images in evaluating the spontaneous subarachnoid hemorrhage ( SAH) by dual-energy computed tomography angiography. 目的探讨虚拟平扫技术在头部扫描应用的可行性,及对评价自发性蛛网膜下腔出血的应用价值。
The scanning covered from the diaphragmatic dome to the umbilicus in the non-enhanced and arterial phase, while from the diaphragmatic dome to the public bone in the venous phase. 平扫及动脉期扫描范围为膈顶至脐平面,静脉期扫描范围为膈顶至整个骨盆。
Magnetic Resonance Imaging of Hepatic Lesions: Quantitative Study of Diffusion Weighted Imaging and Non-enhanced Imaging 肝脏病变的磁共振成像扩散成像及平扫图像定量分析的综合量化研究
Methods In total 61 patients with epigastric lesions were enrolled in the study and underwent enhanced dynamic MRI. Non-enhanced and dynamic enhanced scan were performed on all the patients, and conventional enhanced scan were done with T1WI/ SE sequence immediately after the dynamic scan was finished. 方法收集行MRI检查的上腹部病变患者61例,所有病例均做平扫及动态增强扫描,动态后即刻扫描T1WI/SE得到普通增强扫描图像。
Objective To evaluate the application values and accuracy between only non-enhancement and combination of non-enhanced and enhanced MRI in rectal cancer staging and detecting the depth of extramural tumor infiltration. 目的通过比较分析MR平扫与增强扫描在直肠癌分期及肿瘤外侵程度判断上的准确性,期望对单纯MR平扫与MR平扫加增强扫描在直肠癌的应用作出评价。
Multi-phase CT scans can show the timing characteristics of liver lesions, so it can provide more information about the disease to be more effective in helping radiologist in diagnosis than non-enhanced CT scans. 多期CT扫描数据可以显示肝脏病变的时序特征,能够显示病变随时间的变化情况,因此比一般的平扫CT数据能够提供更多关于病变的信息,能够更有效地帮助医生进行疾病的诊断。