摘要
目的评价三维动态增强MRA(3D CE-MRA)诊断下肢动脉硬化闭塞症(ASO)的准确性及应用价值。方法通过3D CEMRA和DSA两种不同的影像学检查方法对ASO成像结果进行对比研究。结果与DSA相比较,3D CE-MRA评价ASO的符合率为90.5%;诊断下肢动脉病变的灵敏度为98.17%,特异度95.05%,准确率96.67%,阳性预测值95.54%,阴性预测值97.96%。结论对比研究结果表明:DSA仍是目前ASO诊断的"金标准",但其具有创伤性、风险较大且费用高,不适宜作为下肢狭窄的首选诊断方法。3D CE-MRA对全下肢血管病变显示有独特优势,具有无创、无辐射的特点,可作为ASO的主要检测手段。
Objective Evaluated 3D dynamic contrast-enhanced magnetic resonance angiography (3D CE-MRA) diagnosis accuracy and application of arteriosclerotic obliterans (ASO) of the lower limbs. Methods Adopted by the 3D CE-MRA and DSA, the two different image diagnosis methods,the image results of ASO were compa-ratively studied. Results Compared with the results of DSA. Lower limb artery stenosis valuation of 3D CE-MR coincide rate was 90.5%. For lower limb artery lesions diagnostic, the sensitivity, specificity, accuracy, positive pre-dictive value, and negtive predictive value of 3D CE-MRA were 98.17%, 95.05%, 96.67%, 95.54%, and 97.96%,respectively. Conclusion The compared results show that:DSA lower limb artery stenosis diagnosis was"gold standard", but it was invasive, risk and cost. Not suitable for a Lower limb artery stenosis diagnostic first choice method. The 3D CE-MRA has unique advantages on exploring vascular lesions in lower limbs. It was also noninvasive, no radiation and simple that will become the main testing methods for ASO.
出处
《中国CT和MRI杂志》
2015年第2期103-106,共4页
Chinese Journal of CT and MRI