Evaluation of spiral computed tomography versus ventilation/perfusion scanning in patients clinically suspected of pulmonary embolism.
In Vivo
; 19(5): 873-8, 2005.
Article
en En
| MEDLINE
| ID: mdl-16097441
ABSTRACT
OBJECTIVE:
To prospectively evaluate the diagnostic accuracy of spiral computed tomography (CT) versus ventilation/perfusion (V/Q) scanning in the examination of patients clinically suspected of having pulmonary embolism (PE). PATIENTS ANDMETHODS:
Sixty-three patients, presenting to the emergency department and departments of radiology and nuclear medicine of a large hospital, highly suspected of having PE, underwent sequential imaging testing with V/Q scanning and contrast-enhanced spiral CT, in addition to other clinical and laboratory tests.RESULTS:
PE was diagnosed in 42 (66.7%) of the 63 patients. Thirty-nine of these 42 patients had positive findings in their CT scans, while 18 of the remaining 21 patients without PE had negative findings in their spiral CT [sensitivity, 92.9%, specificity, 85.7% Positive Predictive Value (PPV), 92.9%, Negative Predictive Value (NPV), 85.7%]. V/Q scans showed high-probability of PE in 24 of the 42 patients with PE and were negative in 9 of the remaining 21 patients without PE (sensitivity, 571%, specificity, 42.9%, PPV, 66.7%, NPV, 33.3%). There were statistically significant differences in specificity and sensitivity favoring spiral CT among men and women patients or patients > 50 years old. Fifty-four patients (85.7%) rated their satisfaction towards spiral CT as 'good' or 'very good', whereas the respective rate for V/Q scanning was only 14.3%.CONCLUSION:
Spiral CT has an excellent sensitivity, specificity, PPV and NPV for the diagnosis of PE and it could be used as the first-line imaging modality in patients suspected of PE.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Embolia Pulmonar
/
Tomografía Computarizada por Rayos X
/
Tomografía Computarizada Espiral
Tipo de estudio:
Diagnostic_studies
/
Prognostic_studies
Límite:
Adolescent
/
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
In Vivo
Asunto de la revista:
NEOPLASIAS
Año:
2005
Tipo del documento:
Article
País de afiliación:
Grecia