颅内动脉瘤的MRI和MRA诊断

随着现代医学成像技术的发展,计算机体层成像(CT)、磁共振成像(MRI)、磁共振血管造影术(MRA)、数字减影血管造影术(DSA)以及其他方法的广泛应用,越来越多的颅内动脉瘤得到了诊断。在上述的成像方法中,MRI是一种非侵入性的诊断方法,它能够显示出动脉瘤的细节以及动脉瘤与脑的位置关系,并且MRI技术已经成为对有可疑动脉瘤的病人进行评估的一线成像技术。另外,MRA技术由于能够显示脑部的动静脉,因此,同样也可以显示颅内动脉瘤。目前,MRI技术和MRA技术在颅内动脉瘤的诊断、颅内动脉瘤治疗后观察和颅内动脉瘤炎诊断等方面得到了广泛的应用。本文总结2009-2011年国内外相关领域文献资料,对MRI技术和MRA技术在颅内动脉瘤诊断中的优点及不足作一综述。

Diagnosis of Intracranial Aneurysm by MRI and MRA

With the development of modern medical imaging technology, computer tomog- raphy （CT）, magnetic resonance imaging （MRI）, magnetic resonance angiography （MRA）, digital subtraction angiography （DSA） and other ways widely used, more and more intracranial aneurysms were diagnosed. In the imaging methods described above. MRI is a noninvasive diagnostic method for intracranial aneurysm which shows in detail the aneurysm and its relationship to the brain, and it has become first-line imaging techniques in assessment of the patient with suspected intracranial aneurysm. MRA can show the arteries and veins of the brain as well as the aneurysm. Nowadays, MR1 and MRA are extensively used in the diagnosis of intracranial aneurysms, intracranial aneurysms after treatment and intracranial aneurysms inflammation. By summing up the 2009-2011 literaure in related fields at home and abroad, this review describes the advantages of MRI and MRIA for diagnosis and describes diagnostic pitfalls.