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Comparison Between Computed Tomography Angiography and Digital Subtraction Angiography in Critical Lower Limb Ischemia

Author(s):

Hesham E. A. Al-Rudaini, Han Ping* and Liang Huimin   Pages 1 - 8 ( 8 )

Abstract:


Background: CT Angiography (CTA) of aortoiliac and lower extremity arteries is a relatively recent admission of CT imaging that has changed after the introduction of multi-detector row scanners. Objective: to evaluate the diagnostic accuracy of Multidetector Computed Tomographic Angiography (MDCTA) in the assessment of arterial tree in patients with peripheral arterial occlusive disease (PAOD), as compared to Digital Subtraction Angiography (DSA). Methods: A single-center nonrandomized prospective study was conducted on 50 patients complaining of peripheral arterial disease (chronic stage) during February 2017 to October 2017. All patients were exposed to DSA and CTA prior to definitive treatment. the images were then analyzed using maximum intensity projection, volume-rendered, and curved multiplane reformation techniques. Results: All patients involved in this study were susceptible according to their clinical presentation. the statistical analysis exposed a highly significant difference between CT and DSA in the assessment of stenosis at the level of Femropopliteal segment (P<0.01), while for Infrapopliteal segment there was no statistically significant difference between CT and DSA having 8% versus 14% insignificant stenosis and 62% versus 47% significant stenosis in CT and DSA respectively. The overall accuracy of CT angiography in the femropopliteal segments as well was (95.20%) while in the infrapopliteal segment it was (94.5%) Conclusion: Multidetector CT angiography was found to be a reliable alternative mean for pathoanatomical description of the arterial lesions in critical lower limb ischemia and its subsequent management in comparison to digital subtraction angiography.

Keywords:

Multi-Detector Computer Tomography; Lower Extremity Arteries; Peripheral Arterial Disease; Digital Subtraction Angiography

Affiliation:

Department of Imaging and Nuclear Medicine,Union hospital, Tongji Medical Collage (HUST) 13 Hang Kong Road, Wuhan, 430030 P.R., Department of Imaging and Nuclear Medicine,Union hospital, Tongji Medical Collage (HUST) 13 Hang Kong Road, Wuhan, 430030 P.R., Department of Imaging and Nuclear Medicine,Union hospital, Tongji Medical Collage (HUST) 13 Hang Kong Road, Wuhan, 430030 P.R.



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