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Pulmonary thromboembolism: recent developments in diagnosis with CT and MR imaging
W B Gefter1, H Hatabu, G A Holland
1Department of Radiology, University of Pennsylvania Medical Center, Philadelphia 19104, USA.
Radiology
|December 1, 1995
Summary
Computed tomography (CT) and magnetic resonance (MR) imaging show promise for diagnosing pulmonary embolism (PE). Further trials are needed to confirm their routine clinical effectiveness and patient outcomes.
Area of Science:
- Radiology
- Medical Imaging
Background:
- Computed tomography (CT) and magnetic resonance (MR) imaging have advanced significantly.
- These imaging techniques are being re-evaluated for diagnosing pulmonary embolism (PE).
Purpose of the Study:
- To assess the diagnostic accuracy and clinical utility of CT and MR imaging for pulmonary embolism.
- To explore the potential of these modalities in diagnostic algorithms for suspected PE.
Main Methods:
- Review of technical advances in helical and electron beam CT and MR imaging.
- Evaluation of clot detection capabilities down to segmental pulmonary arteries.
Main Results:
- CT currently offers higher accuracy than MR imaging for clot detection.
- MR imaging may offer combined lung and deep venous thrombosis evaluation.
- Subsegmental emboli detection limitations may be clinically insignificant when combined with DVT evaluation.
Conclusions:
- CT and MR imaging show potential for cost-effective PE diagnosis within algorithms.
- Future evaluation should prioritize patient outcomes over sole clot detectability.
- Clinical trials are necessary to establish routine use of CT and MR imaging for acute PE diagnosis.