Aorto-Iliac And Peripheral Arterial Disease: Diagnostic Insights From Ct Angiography Findings

Original Article

Abstract

Objectives:to evaluate the potential of CT angiography in defining the severity of aorto-iliac and peripheral arterial disease and to quantify the percentage of correct findings in anticipating clinically relevant stenosis.

Study Design: A Cross sectional study

Place and Duration of the Study: General and vascular surgeon  DHQ Hospital Batkhela and duration of the study was six months from jan 2024 to june 2024

Methodology: 50 patients suspected of having aorto-iliac and peripheral arterial diseases retrospectively. The results of diagnostic evaluation were compared against standard digital subtraction angiography as a gold standard. The degree of stenosis, the type of plaque and presence and grade of collaterals were measured in this study. To each variable, a test of significance was made using p-value; measure of variance was assessed using standard deviation (SD). Furthermore patients who underwent previous vascular interventional treatment were also excluded from the study.

Results: Of 50 patients, 38 (76% of cases) were found to have clinically relevant stenosis (> 50%) by the use of CT angiography. There was a relative symmetry of the lesion:48 ‘Right’ (SD ±10); 49 ‘Left’. Collateral formation was confirmed in the present study in 22 patients (44%). CTA stenosis measurement yielded 90% sensitivity for diagnosis when compared with conventional angiography; p < 0.01. The sensitivity and specificity of CTA were 92% and 87% respectively.

Conclusions: CT angiography procedures are quick and safe and provide accurate sensitivity and specificity results in differentiating aorto-iliac and peripheral arterial diseases. Because it can show arterial lesions, and collateral vessels, it can assist in treatment planning and may decrease the need for interventional actions.

Keywords: Aorto-iliac PAOD, peripheral arterial disease, computer tomography angiography, stenosis