Deep vein thrombosis

The term deep vein thrombosis (DVT) is practically a synonym for those that occur in the lower limbs. However, it can also be used for those that occur in the upper limbs and neck veins. Other types of venous thrombosis, such as intra-abdominal and intracranial, are discussed in specific sections.

Radiographic features

Ultrasound

The majority of deep venous thrombi occurs in the lower extremities and begin in the soleal veins of the calf. Doppler sonovenography study is the imaging modality of choice. Features include:

  • non-compressible venous segment
  • increased venous diameter: acute thrombus
  • decreased venous diameter: chronic thrombus
  • loss of phasic flow on Valsalva manoeuvre
  • absent colour flow: if completely occlusive
  • increased flow in superficial veins
  • lack of flow augmentation of calf squeeze

Complications

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Article Information

rID: 1204
Tags: vascular, refs
Synonyms or Alternate Spellings:
  • Deep vein thrombosis (DVT)
  • DVT
  • Deep venous thrombosis
  • Deep vein thromboses
  • DVT's

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    DVT Left Poplitea...
    Case 2: in left popliteal vein
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    Case 4: on left
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    Common femoral ve...
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    Case 9: subclavian and internal jugular
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