Mehwish Tahir, Sadaf Iqbal, Maimoona Gulshan

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Aim: Role of Doppler ultrasound in comparison with MDCT angiography in the assessment of lower limb Peripheral arterial disease.

Methodology: This study was conducted in Radiology department of Shalamar Hospital Lahore. A total of 42 patients (31 males and 11 females) diagnosed with PAD by using both Doppler ultrasound and MDCTA were included. The data collected was entered, tabulated and statistically analyzed on IBM-SPSS 25.0 version.

Results: A total of 336 arterial segments were assessed on both modalities. Duplex ultrasound detected 278 (83%) positive patent segments, 124(37%) segments showing atherosclerosis and 63(19%) segments with stenosis/thrombus, in comparison to MDCTA which was able to detect 221 (66%) patent vessels,153(46%) segments showing atherosclerosis and 114 (34%) segments showing thrombus/ stenosis. The results showed that the MDCTA was able to detect 15% more arterial segments with stenosis/ thrombus and 9% more segments with atherosclerotic plaques as compared to Doppler.

Conclusion: Doppler ultrasound is the modality of choice in detecting grade 0 and 1 PAD while. MDCTA is more accurate in assessing patients with grade 2 and 3 PAD who need surgical intervention.

Key Words: PAD, Duplex ultrasound, Multidetector CT Angiography

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