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Related Experiment Videos

Pulmonary circulation

G Bongartz1, M Boos, K Scheffler

  • 1Department of Diagnostic Radiology, University Hospitals/Kantonsspital, Petersgraben 4, CH-4031 Basel, Switzerland.

European Radiology
|June 24, 1998
PubMed
Summary
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Pulmonary thromboembolism diagnosis is improving with advanced imaging. While computed tomography (CT) is useful, magnetic resonance imaging (MRI) shows potential for superior pulmonary vascular evaluation.

Area of Science:

  • Radiology
  • Cardiovascular Imaging
  • Pulmonary Medicine

Background:

  • Pulmonary thromboembolism (PTE) diagnosis relies on ventilation-perfusion scintigraphy, often combined with leg deep venous thrombosis assessment.
  • Current methods lack reliability for many patients, necessitating invasive conventional angiography for definitive diagnosis in equivocal cases.

Purpose of the Study:

  • To evaluate non-invasive imaging techniques, specifically computed tomography (CT) and magnetic resonance imaging (MRI), as alternatives for diagnosing pulmonary vasculature conditions.
  • To compare the efficacy and limitations of CT and MRI in detecting and excluding pulmonary thromboembolism.

Main Methods:

  • Review of helical CT and CT angiography (CTA) techniques for PTE detection.
  • Assessment of contrast-enhanced magnetic resonance angiography (MRA) and breath-hold techniques for delineating lung vascularization.

Related Experiment Videos

  • Comparison of imaging characteristics, including peripheral vessel visualization and artifact potential.

    • Main Results:

    • Helical CT and CTA are clinically available and generally sufficient for PTE detection/exclusion, though peripheral disease and artifacts can be challenging.
    • Contrast-enhanced MRA can delineate entire lung vascularization and detect thromboemboli.
    • MRI offers potential advantages in visualizing vascular periphery and providing comprehensive 3D reconstruction compared to CT.

    Conclusions:

    • Non-invasive imaging like CT and MRI offers promising alternatives to traditional diagnostic work-ups for pulmonary vasculature evaluation.
    • MRI demonstrates potential superiority over CT for pulmonary vascular disease diagnosis due to enhanced peripheral delineation and 3D reconstruction capabilities.
    • Further clinical experience is needed, but MRI may become a preferred non-invasive method for pulmonary thromboembolism assessment.