Colour flow doppler: An emerging alternative to conventional arteriography for arterial mapping in peripheral arterial occlusive disease|
Thakur RajeshwarSingh, Minhas SS, Dhiman DS, Abbey RK
Background: Arteriography has been considered the "Gold Standard" for the investigation of Peripheral arterial occlusive disease (PAOD). The development of Colour flow Doppler (CFD) has extended the scope of non-invasive assessment of chronic lower limb arterial disease.
Aims: To evaluate and correlate the findings of CFD with arteriography as the gold standard, in PAOD of the lower extremities.
Settings and Design: This prospective study was designed in the department of general surgery IGMC, HP. Patients were subjected to CFD scan followed by arteriography, to evaluate the aorto-iliac and femoro-popliteal vessels.
Materials and Methods: Thirty patients of PAOD formed the subjects and their affected lower limbs evaluated by CFD and arteriography, for localization and grading of lesion in the arteries, into normal/insignificant stenosis, significant stenosis and occlusion. The results were analyzed in a blind fashion in a total of 45 limbs comprising of 300 vascular segments.
Statistical Analysis: Results were analyzed by two way contingency tables and kappa statistics.
Results: CFD was able to identify 50 of the 59 (85%) lesions identified on arteriography. There was good statistical agreement and sensitivity of CFD ranged from, 80% to 100% and specificity from 93.9% to 100% in different arterial segments.
Conclusions: CFD has grown from an ancillary diagnostic aid, to a critical component in the non-invasive diagnostic workup for patients with PAOD of the lower extremity, with the potential of displacing arteriography as the primary diagnostic imaging modality.
Peripheral arterial occlusive disease, colour flow doppler, arteriography