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[Gd-enhanced subtraction MR venography].

T Hoshi1, T Hachiya, T Kanauchi

  • 1Department of Radiology, Saitama Cardiovascular and Respiratory Center.

Nihon Igaku Hoshasen Gakkai Zasshi. Nippon Acta Radiologica
|November 24, 1999
PubMed
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Gadolinium-enhanced subtraction MR venography (Gd SMRV) clearly images calf veins, proving highly effective for diagnosing calf venous thrombosis. This non-invasive technique offers excellent visualization of deep and superficial veins, aiding in the assessment of venous diseases.

Area of Science:

  • Radiology
  • Vascular Imaging
  • Medical Diagnostics

Background:

  • Deep venous thrombosis (DVT) and varicose veins are common calf venous diseases.
  • Accurate diagnosis of calf venous thrombosis is crucial for effective treatment.
  • Conventional venography has limitations in visualizing calf venous structures.

Purpose of the Study:

  • To evaluate the efficacy of Gadolinium-enhanced subtraction MR venography (Gd SMRV) for imaging calf veins.
  • To assess the diagnostic performance of Gd SMRV in detecting calf venous thrombosis.
  • To compare Gd SMRV with conventional venography.

Main Methods:

  • Gd SMRV was performed on 15 normal legs, 33 with varicose veins, and 22 with suspected DVT.
  • Conventional venography was used as a comparison in 46 legs.

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  • Vein visualization rates and diagnostic accuracy for DVT were analyzed.

    • Main Results:

    • Gd SMRV demonstrated high visualization rates for deep, greater saphenous, and intramuscular veins in normal and varicose legs.
    • Varicose veins were visualized in 100% of cases.
    • Gd SMRV showed 100% sensitivity, 92% specificity, and 93% accuracy for calf venous thrombosis compared to conventional venography.
    • High-intensity thrombi were observed on precontrast images, aiding diagnosis.

    Conclusions:

    • Gd SMRV is a non-invasive and effective method for distinctly imaging calf veins.
    • Gd SMRV is highly useful for diagnosing calf venous diseases, particularly calf venous thrombosis.
    • The technique provides clear visualization and accurate diagnostic capabilities for venous pathology.