Article (Scientific journals)
Incidence and distribution of lower extremity deep venous thrombosis at indirect computed tomography venography in patients suspected of pulmonary embolism.
NCHIMI LONGANG, Alain; GHAYE, Benoît; NOUKOUA TCHUISSE, Charlemagne et al.
2007In Thrombosis and Haemostasis, 97 (4), p. 566-72
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Keywords :
Adult; Aged; Aged, 80 and over; Angiography/methods; Female; Humans; Incidence; Lower Extremity/blood supply; Male; Middle Aged; Odds Ratio; Phlebography/methods; Practice Guidelines as Topic; Predictive Value of Tests; Pulmonary Artery/radiography; Pulmonary Embolism/diagnosis/epidemiology/etiology/radiography; Retrospective Studies; Risk Assessment; Thromboembolism/diagnosis/epidemiology/radiography; Tomography, X-Ray Computed/methods; Veins/pathology; Venous Thrombosis/complications/diagnosis/epidemiology/radiography
Abstract :
[en] Indirect computed tomography (CT) venography reportedly provides high accuracy for detection of venous thrombosis in patients suspected of pulmonary embolism (PE). Nevertheless, the extent of the scanning range for lower limb and abdominal veins remains to be determined. It was the objective of this study to investigate the distribution of venous thrombosis in order to identify the most appropriate extent of scanning range when using CT venography. We reviewed 1,408 combined CT pulmonary angiographies (CTPA) and indirect CT venographies of the lower limbs, performed in patients suspected of PE. Percentage of venous thromboembolism (VTE), which includes PE and/or venous thrombosis was calculated. Location and the upper end of clots were recorded in 37 venous segments per patient from calf to diaphragm. PE, venous thrombosis and VTE, were found respectively in 272 (19.3%), 259 (18.4%) and 329 (23.4%) patients. Addition of CT venography to CTPA increased depiction of VTE in 17.3%. The upper end of venous thrombosis was located below the knee in 48%, between knee and inguinal ligament in 36% of the patients, and above the inguinal ligament in 15%. Ninety-six patients had thrombosis in a single vein, of which none occurred above the iliac crests in a patient without PE at CTPA. In conclusion, when added to CTPA, optimal scanning of CT venography should extent from calves to the iliac crests in patients suspected of VTE.
Disciplines :
Radiology, nuclear medicine & imaging
Author, co-author :
NCHIMI LONGANG, Alain ;  Centre Hospitalier Universitaire de Liège - CHU > Radiodiagnostic
GHAYE, Benoît 
NOUKOUA TCHUISSE, Charlemagne 
Dondelinger, Robert 
Language :
English
Title :
Incidence and distribution of lower extremity deep venous thrombosis at indirect computed tomography venography in patients suspected of pulmonary embolism.
Publication date :
2007
Journal title :
Thrombosis and Haemostasis
ISSN :
0340-6245
eISSN :
2567-689X
Publisher :
Schattauer, Germany
Volume :
97
Issue :
4
Pages :
566-72
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 June 2013

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