Document Detail

Risk of pulmonary embolism after negative MDCT pulmonary angiography findings.
MedLine Citation:
PMID:  14736689     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The purpose of our study was to determine the risk of pulmonary embolism in patients who have negative MDCT pulmonary angiography findings. SUBJECTS AND METHODS: In this prospective study, one hundred two consecutive patients with suspected pulmonary embolism underwent MDCT pulmonary angiography. Scans were reviewed jointly by two observers and findings recorded by consensus. Observers noted whether pulmonary embolism or other disease was present. No pulmonary embolism was seen in 85 patients (52 men and 33 women; age range, 20-94 years; mean age, 60 years) who were followed up for a mean of 9 months (range, 4-13 months) for evidence of subsequent pulmonary embolism. RESULTS: One patient had a diagnosis of pulmonary embolism made within 3 weeks of undergoing CT pulmonary angiography. MDCT pulmonary angiography showed additional potentially significant findings in 76% of patients; 47% of these findings were not suspected on chest radiography. CONCLUSION: The risk of pulmonary embolism at a mean of 9 months after negative MDCT pulmonary angiography findings is 1%. In our study of patients without pulmonary embolism, MDCT pulmonary angiography revealed other causes for individual patients' signs or symptoms in most cases.
E C Kavanagh; A O'Hare; G Hargaden; J G Murray
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Publication Detail:
Type:  Evaluation Studies; Journal Article    
Journal Detail:
Title:  AJR. American journal of roentgenology     Volume:  182     ISSN:  0361-803X     ISO Abbreviation:  AJR Am J Roentgenol     Publication Date:  2004 Feb 
Date Detail:
Created Date:  2004-01-22     Completed Date:  2004-03-11     Revised Date:  2008-02-15    
Medline Journal Info:
Nlm Unique ID:  7708173     Medline TA:  AJR Am J Roentgenol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  499-504     Citation Subset:  AIM; IM    
Department of Radiology, Mater Misericordiae Hospital, Eccles St, Dublin 7, Ireland.
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MeSH Terms
Aged, 80 and over
False Negative Reactions
Follow-Up Studies
Middle Aged
Predictive Value of Tests
Prospective Studies
Pulmonary Artery / radiography*
Pulmonary Embolism / radiography*
Risk Assessment
Tomography, X-Ray Computed* / methods
Ventilation-Perfusion Ratio

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