Intermediate
Technical
IVT
duplex ultrasound
Non-invasive imaging combining B-mode ultrasound with Doppler flow assessment.
Full Definition
A diagnostic imaging technique combining real-time B-mode ultrasound visualization with pulsed Doppler flow measurement to evaluate vascular anatomy and hemodynamics. In vascular surgery, duplex ultrasound is the primary surveillance tool for graft patency, stenosis detection, and aneurysm monitoring. Reports must include specific velocity measurements, waveform characteristics, and standardized criteria for stenosis grading.
Usage
Usage note: Often abbreviated as 'duplex' in clinical documentation.
In Context
- "Duplex ultrasound revealed peak systolic velocity of 350 cm/s suggesting significant stenosis." — Diagnostic report
- "Annual duplex ultrasound surveillance is recommended following carotid endarterectomy." — Follow-up protocol
Also known as
duplex scanning
vascular ultrasound
Don't confuse with
Doppler ultrasound
B-mode ultrasound