Why standing leg-vein ultrasound matters
ENGLISH
Visible veins show only the surface. Reflux may begin in the thigh, behind the knee or elsewhere. Standing leg-vein ultrasound maps the source.
The test uses no radiation or injections. A probe moves over the leg while blood flow is observed.
- Locates the source of reflux
- Checks superficial and deep veins
- Guides laser, medical adhesive or other treatment
1.What does the test show?
- Whether blood flows in the wrong direction.
- The location, diameter and course of refluxing veins.
- Whether the deep veins are open.
- Residual or new reflux after previous treatment.
2.How should I prepare?
- Fasting is usually unnecessary.
- Wear clothing that allows the leg to be exposed.
- Bring your symptoms and treatment questions.
💡 Appearance alone versus ultrasound
| Comparison | Looking at the leg | Standing ultrasound |
|---|---|---|
| Information | Surface appearance | Blood direction and deeper source |
| Locate reflux | Not reliably | Yes |
| Treatment plan | May focus only on visible veins | Uses a venous map |
| Test experience | Visual inspection | No radiation or injection |
Note: Not every small vein needs a full study. The need depends on symptoms and treatment goals.
References
- Gloviczki P, et al. SVS/AVF/AVLS Guidelines Part I. J Vasc Surg Venous Lymphat Disord. 2023;11:231–261.e6. View source
This article is for health education only and does not replace individual medical assessment. Seek urgent care for acute symptoms.
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