CT技术诊断下肢动脉硬化闭塞症的应用进展

CT血管成像技术(CTA)在下肢动脉硬化闭塞症诊断中的应用日益广泛。该技术相对其他方法来说具有无创、简便等明显优势。数字减影血管造影以往被认为是诊断动脉硬化性疾病的唯一可靠方法, 而目前CTA技术对这个老的“金标准”提出了挑战。多源CT的应用使全动脉树形结构的无创成像成为可能, 该技术的优化令动脉硬化性疾病的诊断更加精准。对比剂的应用和仪器参数的优化, 使CTA检查的照射剂量明显降低。今后, 随着CT技术的快速发展, CTA技术必将成为诊断下肢动脉闭塞疾病的理想方法。

Technology progress of computed tomography in the diagnosis for lower extremity arteriosclerosis obliterans

Computed tomography angiography(CTA)is an increasingly attractive imaging modality for assessing lower extremity arteriosclerosis obliterans. This technique has obvious advantage because it is a non-invasive and simple and convenient method than other ways. Previously, digital subtraction angiography was the only established reliable imaging technique to quantify atherosclerotic disease; however, CTA may now challenge this old " gold standard". Multidetector computed tomography enables imaging of the entire arterial tree non-invasively. Optimal technical considerations for performing Multidetector CTA are essential for accurate diagnosis of atherosclerotic diseases. The essential issue of radiation dose reduction during the processing of CTA is solved by the optimization of contrast agent and instrument parameter. CTA will certainly be a perfect technique for the diagnosis of lower extremity arteriosclerosis obliterans along with the rapid progress of Computed tomography.