[Imaging of peripheral arteriovenous malformations using color-coded Doppler sonography]

Area of Science:

• Vascular Imaging
• Diagnostic Ultrasound
• Radiology

Background:

• Arteriovenous malformations (AVMs) are complex vascular anomalies requiring accurate diagnostic imaging.
• Conventional angiography is the gold standard but is invasive.
• Non-invasive ultrasound techniques are being explored for AVM evaluation.

Purpose of the Study:

• To evaluate the efficacy of color-coded Doppler sonography and duplex Doppler sonography in diagnosing arteriovenous shunts.
• To assess the ability of these ultrasound modalities to identify feeding vessels in patients with AVMs.
• To compare the diagnostic capabilities of Doppler sonography with angiography.

Main Methods:

• Retrospective analysis of 15 patients with suspected arteriovenous malformations.
• Utilized color-coded Doppler sonography and duplex Doppler sonography for imaging.
• Correlated sonographic findings with angiography in 10 cases.
• Histological confirmation for one soft tissue tumor diagnosis.

Main Results:

• Doppler sonography correctly identified arteriovenous shunts in all 15 patients.
• Angiographic correlation confirmed findings in 10 cases.
• Duplex Doppler sonography had limitations in precisely identifying feeding vessels.
• Color-coded Doppler sonography accurately identified feeding vessels in only 2 patients.
• Sonography successfully diagnosed a soft tissue tumor (malignant synovialoma) in one patient.

Conclusions:

• Color-coded Doppler sonography is a valuable adjunct to angiography for diagnosing arteriovenous malformations.
• It reliably detects arteriovenous shunts.
• However, it does not replace angiography for comprehensive evaluation, particularly for feeding vessel identification.