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Titolo:
Evaluation of the lower extremity veins in patients with suspected pulmonary embolism: A retrospective comparison of helical CT venography and sonography
Autore:
Duwe, KM; Shiau, M; Budorick, NE; Austin, JHM; Berkmen, YM;
Indirizzi:
Columbia Univ Coll Phys & Surg, New York Presbyterian Hosp, Dept Radiol, New York, NY 10032 USA Columbia Univ Coll Phys & Surg New York NY USA 10032w York, NY 10032 USA
Titolo Testata:
AMERICAN JOURNAL OF ROENTGENOLOGY
fascicolo: 6, volume: 175, anno: 2000,
pagine: 1525 - 1531
SICI:
0361-803X(200012)175:6<1525:EOTLEV>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEEP VENOUS THROMBOSIS; VENTILATION-PERFUSION SCINTIGRAPHY; SPIRAL CT; CONTRAST VENOGRAPHY; ANGIOGRAPHY; DIAGNOSIS; ULTRASOUND; US;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Duwe, KM Columbia Univ Coll Phys & Surg, New York Presbyterian Hosp, Dept Radiol, Milstein Hosp Bldg,2nd Fl,Ft Washington Ave, New York, NY 10032 USAColumbia Univ Coll Phys & Surg Milstein Hosp Bldg,2nd Fl,Ft Washington AveNew York NY USA 10032
Citazione:
K.M. Duwe et al., "Evaluation of the lower extremity veins in patients with suspected pulmonary embolism: A retrospective comparison of helical CT venography and sonography", AM J ROENTG, 175(6), 2000, pp. 1525-1531

Abstract

OBJECTIVE, In patients undergoing a combined CT angiographic and CT venographic protocol, the accuracy of helical CT venography for the detection of deep venous thrombosis was compared with that of lower extremity sonography. MATERIALS AND METHODS. Patients who had undergone a combined CT angiographic and CT venographic protocol and sonography of the lower extremities within 1 week were identified. The final reports were evaluated for the presence or absence of deep venous thrombosis. Statistical measures for the identification of deep venous thrombosis with helical CT venography were calculated. In each true-positive case, the location of the thrombus identified with both techniques was compared. All false-positive and false-negative caseswere reviewed to identify the reasons for the discrepancies. RESULTS. Seventy-four patients were included. There were eight patients (11%) with true-positive findings, 61 patients (82%) with true-negative findings, four patients (5%) with false-positive findings, and one patient (1%) with a false-negative finding. When comparing helical CT venography with sonography for the detection of lower extremity deep venous thrombosis, the sensitivity measured 89%; specificity, 94%; positive predictive value, 67%: negative predictive value, 98%; and accuracy, 93%. Of the eight true-positive cases, five had sites of thrombus that were in agreement on both CT venography and sonography. Of the five discordant cases, four were false-positives and one was a false-negative. Possible explanations for all discrepancies were identified. CONCLUSION. Compared with sonography, CT venography had a 93% accuracy in identifying deep venous thrombosis. However, the positive predictive value of only 67% for CT venography suggests that sonography should be used to confirm the presence of isolated deep venous thrombosis before anticoagulation is initiated. In addition, interpretation of CT venography should be performed with knowledge of certain pitfalls.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/01/20 alle ore 00:56:16