Radiology

1. COLOUR DOPPLER ULTRASOUND IN
EVALUATION OF PERIPHERAL VASCULAR
DISEASE AND COMPARISON WITH CT
ANGIOGRAPHY
Dr VISHNU DUTT E
Name of the Guide: Dr. ANUSHA VARGHESE MD
HOD & SENIOR CONSULTANT

2. INTRODUCTION
Peripheral arterial disease is the narrowing or
occlusion of an artery or arteries of the limb.
Clinical assessment has limited role and
radiological imaging is necessary for
confirmation of diagnosis and appropriate
management. Colour Doppler ultrasound and CT
angiography are imaging techniques used to
evaluate blood flow in peripheral blood vessels.

3. AIM OF THE STUDY
To compare the diagnostic efficacy of
ultrasound and CT angiography in the
evaluation of peripheral vascular disease.

4. OBJECTIVES
• To compare the sensitivity, specificity, PPV and
the NPV of the Doppler ultrasound with CT
angiography in patients with peripheral arterial
disease by comparing their efficiency in detecting
1. Degree of stenosis (stenosis > 50% is taken as
significant)
2. Correlation of calcified segments on CDUS and CTA

5. MATERIALS AND METHODS
STUDY SETTING :
LOURDES HOSPITAL, PACHALAM, KOCHI , KERALA
STUDY POPULATION:
The study group includes 50 patients with unilateral or
bilateral lower limb ischemic disease - who have come
to the department of radiology for CT angiography.
STUDY DESIGN :
Prospective observational study
STUDY PERIOD:
FEB 2023 to FEB 2025
SAMPLE SIZE-50

6. FLOW CHART
Case of peripheral arterial disease
Colour doppler Ultrasound
CT Angiography
Comparison of Colour doppler Ultrasound with CT angiography
Finding the sensitivity, specificity, ppv, npv of Doppler ultrasound
with CT Angiography

7. THANK YOU