One Year Study of Comparison of Diagnostic Accuracies of Colour flow Doppler with Contrast Enhanced Magnetic Resonance Angiography (M R Angiography) and with intraoperative Findings in 30 Patients with Obstructive Arterial Disease of Lower Limbs Presenting at KLE Hospital,Belgaum

Abstract

Background - MR angiography has been considered the “GOLD STANDARD” for the investigation of obstructive arterial disease of lower limbs.The development of Colour Flow Doppler has extended the scope of non-invasive assessment of lower limb arterial disease. Aim - To prospectively compare the diagnostic accuracy of Doppler with MR angiography and with intraoperative findings in detecting hemodynamically significant lesions in patients with obstructive arterial disease of lower limbs Settings and design - This comparative study was designed in the department of general surgery , J.N.Medical college , Belgaum.,Patients were subjected to Doppler and MRA to evaluate the aorto-iliac and femoro-popliteal vessels. Materials and methods - 30 patients of obstructive arterial disease of lower limbs formed the subjects and their affected lower limbs evaluated with Doppler and MRA and findings compared with intraoperative findings Statistical analysis - Sensitivity and specificity calculated and chi-square test used for calculation of P value . A P value of < 0.05 is considered statistically significant Results - There was good statistical agreement and sensitivity and specificity of Doppler ranged from 70-90% and 100% in different arterial segments. Sensitivity and specificity of MRA ranged from 90-95% and 100% in different arterial segments. Conclusion - Colour doppler has grown from an ancillary diagnostic aid to a critical component in non-invasive diagnostic workup for patients with obstructive arterial disease of lower limbs , with the potential of displacing MRA as the initial investigation of choice.