Thrombosis detection: fibrinogen counting and radionuclide venography

Area of Science:

• Diagnostic Imaging
• Nuclear Medicine
• Vascular Medicine

Background:

• Venous thromboembolic disease presents with non-specific clinical signs, necessitating reliable diagnostic methods.
• Contrast venography is a reference standard but is invasive.
• Less invasive imaging techniques are crucial for patient management and epidemiological studies.

Purpose of the Study:

• To evaluate the utility of radionuclide venography and pulmonary scintigraphy as less invasive diagnostic tools for venous thromboembolic disease.
• To assess the correlation of radionuclide venography with contrast venography.

Main Methods:

• I-125 labeled fibrinogen uptake (I-125 FUT) for epidemiological studies and treatment efficacy.
• Radionuclide venography combined with pulmonary scintigraphy for diagnosing venous thromboembolism.
• Comparison with contrast venography as the reference standard.

Main Results:

• I-125 FUT is suitable for epidemiological studies and suspected lower leg/calf venous thrombosis.
• Radionuclide venography with pulmonary scintigraphy aids in defining venous thromboembolism, especially when clinical signs are ambiguous or silent.
• Both radionuclide venography and I-125 FUT show good correlation with contrast venography.

Conclusions:

• Radionuclide venography, particularly when combined with pulmonary scintigraphy, is a valuable, less invasive alternative for diagnosing venous thromboembolism.
• These radionuclide techniques are suitable for routine clinical use and epidemiological research despite some limitations.