[Assessment of blood flow by Doppler method]

Area of Science:

• Vascular Ultrasound
• Doppler Echocardiography
• Medical Imaging

Background:

• Doppler principle-based methods are crucial for vascular assessment.
• Doppler sound and color-duplex sonography offer distinct capabilities in evaluating blood flow.
• Accurate diagnosis of vascular diseases impacts patient outcomes.

Purpose of the Study:

• To review the applications of Doppler sound and color-duplex sonography in vascular assessment.
• To highlight the diagnostic strengths and limitations of these Doppler techniques.
• To compare their efficacy in evaluating lower limb, carotid, and deep vein pathologies.

Main Methods:

• Utilized Doppler sound for ankle pressure measurements to assess lower limb arterial disease.
• Employed color-duplex sonography to identify internal carotid artery lesions and deep vein thrombosis.
• Compared the diagnostic accuracy of Doppler techniques for various vascular conditions.

Main Results:

• Doppler sound effectively assesses lower limb severity via ankle pressure.
• Color-duplex sonography detects total occlusion, stenosis, embolism, and thrombosis with high precision.
• Color-duplex sonography accurately visualizes deep vein thrombus formation in femoral, popliteal, and infrapopliteal veins.
• Internal carotid lesions causing stroke and transient ischemic attack can be delineated.
• Ruptured aneurysms present a diagnostic challenge for color-duplex sonography.

Conclusions:

• Doppler sound and color-duplex sonography are essential tools for vascular blood flow assessment.
• Color-duplex sonography offers superior resolution for identifying stenosis, thrombosis, and embolism.
• While effective for many vascular conditions, limitations exist, such as in ruptured aneurysm diagnosis.