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CT venography in suspected pulmonary thromboembolism
Douglas S Katz1, Peter A Loud, Adam N Hurewitz
1Department of Radiology, Winthrop-University Hospital, 259 First Street, Mineola, NY 11501, USA. dsk2928@pol.net
Seminars in Ultrasound, CT, and MR
|March 24, 2004
Summary
Combined CT venography and pulmonary angiography (CTVPA) offers a single, accurate imaging solution for diagnosing deep venous thrombosis (DVT) and pulmonary embolism (PE). This efficient method aids in patient management by visualizing deep veins and assessing venous thromboembolism extent.
Area of Science:
- Radiology
- Vascular Imaging
- Diagnostic Medicine
Background:
- Pulmonary embolism (PE) and deep venous thrombosis (DVT) are interconnected conditions often presenting diagnostic challenges.
- Clinical diagnosis of venous thromboembolism (VTE) can be difficult, necessitating advanced imaging techniques.
Purpose of the Study:
- To evaluate the utility of combined CT venography and pulmonary angiography (CTVPA) as a comprehensive diagnostic tool for VTE.
- To assess CTVPA's accuracy and efficiency compared to traditional methods for detecting DVT and PE.
Main Methods:
- CTVPA integrates multidetector CT pulmonary angiography (CTPA) with CT venography (CTV) of the abdomen, pelvis, and lower extremities in one examination.
- The technique avoids additional venipuncture and i.v. contrast, with minimal increase in scanning time.
Main Results:
- CTVPA provides rapid and accurate examination of deep veins, identifying the presence, absence, and extent of DVT.
- Studies indicate high accuracy for CTV when compared with venous ultrasound for DVT detection.
- CTVPA serves as a valuable baseline and aids in guiding patient management for VTE.
Conclusions:
- CTVPA is an effective "one-stop shop" for diagnosing VTE, combining PE and DVT assessment.
- While highly accurate, potential pitfalls in image interpretation and optimization of scanning protocols require consideration.