The Diagnostic Value Of Multi-slice Spiral CTA And MRA In The Takayasus Arteritis

PURPOSE: To evaluate the imaging features of Multi-slice spiral CTA and MRA in the Takayasus arteritis, improve the diagnosis and the value of CTA and MRA in the Takayasus arteritis.METHOD AND MATERIALS: Twenty-eight patients with Takayasu artertis were retrospectively analyzed.CT angiography (23)and imaging recontruction including multi- planar reformat(MPR), maximum intensity projection(MIP), volume rendering(VR) were performed by Siemens 64 MSCT and MRA (5) including 3D maximum intensity projection(MIP) by Siemens 1.5T.RESULTS: MSCT angiography and MRA transverse and reconsructed images clearly depicted the carotid vascular luminal abnormalities, such as stenosis,occlusion,dilation, aneurysm formation, wall thickening a in the aorta and major branches. The artery wall was significantly thicker(5.31±0.89mm), CTA (13 cases)features of wall-thickening appeared as a ring low density and enhancement, MRA (3 cases)features of wall-thickening appeared as "multi-ring sign", the inner layer enhanced and blood vessels outside blurred clear in 16 patients with active disease; mild wall thickening(2.36±0.75mm)with uniform circular high density and no enhancement, part of the calcified wall in CTA (9 cases), MRI (2 cases) showed wall thicken homogeneous high signal ring thickening, no enhancement, boundary definition, peripheral low signal, the wall surrounding state of clear.CONCLUSION: Multi-slice spiral computed tomographic angiography and magnetic resonance angiography can provide valuable information not only regarding intraluminal pathologies but also concerning the thickening of the vessel wall in the Takayasus arteritis,it is useful for early diagnosis and the detection of Takaysus arteritis.