Acute pulmonary embolism: ancillary findings at spiral CT.

Abstract:

PURPOSE:To determine the value of parenchymal findings at contrast material-enhanced spiral computed tomography (CT) in patients suspected to have pulmonary embolism (PE). MATERIALS AND METHODS:Eighty-eight patients suspected to have PE underwent contrast-enhanced spiral CT and ventilation-perfusion scintigraphy. Concordance between CT and scintigraphic results was used to diagnose or exclude PE. Pulmonary angiography was attempted in all patients with discordant CT and scintigraphic results or indeterminate scans. Parenchymal CT scans were assessed by two radiologists who were not aware of the diagnosis and who had access only to lung window images. RESULTS:Twenty-six patients had PE; 62 did not. Wedge-shaped pleural-based consolidation was seen in 16 patients with PE (62%) and 17 patients without PE (27%) (P < .05) (sensitivity, 62%; specificity, 73%). Linear bands were seen in 12 patients with PE (46%) and 13 patients without PE (21%) (P < .05) (sensitivity, 46%; specificity, 79%). There was no statistically significant difference in the frequency of non-wedge-shaped consolidation, areas of decreased attenuation, or atelectasis. Central and lower-lobe segmental pulmonary arteries that contained emboli were enlarged (P < .05). CONCLUSION:Parenchymal findings may suggest further investigations when results of spiral CT are inconclusive in diagnosis of PE.

journal_name

Radiology

journal_title

Radiology

authors

Coche EE,Müller NL,Kim KI,Wiggs BR,Mayo JR

doi

10.1148/radiology.207.3.9609900

subject

Has Abstract

pub_date

1998-06-01 00:00:00

pages

753-8

issue

3

eissn

0033-8419

issn

1527-1315

journal_volume

207

pub_type

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