XRA

Analysis and application for XRA is an important research direction in the modern digital medical imaging research.

针对血管造影图像的分析和应用是现代医学数字图像研究的一个重要方向。

The first rule specifies that user xray will override the base permissions for read and write access, as long as he is a member of the group chatt.

第一个规则指定，只要用户xray是组chatt的成员，就允许他读和写，这会覆盖基本权限。

Conclusion MRA is accurate and reliable in evaluating vascular lesion in the body and can replace XRA in many cases.

结论MRA对体部血管病变诊断的符合率较高，在许多病例能代替XRA。

Methods 171 patients with suspected vascular lesions in the body were examined by MRA and compared with the results of X ray angiography ( XRA) or operation.

方法对171例可疑体部血管病变患者行MRA检查，并与X线血管造影（XRA）及手术结果比较。

XRA was performed in 18 patients, ultrasonography in 5 patients and DSA in 1 patient.

18例行顺行性深静脉造影术,5例行B超检查,1例行DSA检查.

The sixth rule denies write access to user xray if user xray is a member of groups chatt and spyi.

第六个规则指定，如果用户xray是chatt和spyi组的成员，就拒绝他写。